http://www.workingwithwater.net/ Copyright Elsevier Ltd Intuitiv Ltd (www.intuitiv.net) Thu, 09 Sep 2010 16:52:06 GMT http://www.workingwithwater.net/ http://www.workingwithwater.net/_common/img/template/wwwater/site-logo.gif http://www.workingwithwater.net/view/12235/measuring-liquid-in-half-filled-pipes/ A wastewater treatment plant needed to measure the volume of liquid in partially filled pipes. Inaccurate flow measurements in a particularly troublesome section of piping forced the plant to run on manual mode. The installation of electromagnetic flowmeters provided accurate, continuous measuring over the entire pipe cross-section and enabled the switch to automatic mode. Mon, 06 Sep 2010 11:23:00 GMT http://www.workingwithwater.net/view/12235/measuring-liquid-in-half-filled-pipes/ http://www.workingwithwater.net/view/11702/wastewater-odour-control-in-an-open-aeration-basin-/ A District created to promote public health decided to scrub off-gas odours from its Vallejo wastewater treatment plant. The two open aeration basins were targeted as part of the odour control upgrade. A retractable geomembrane cover was selected for the basins, which combines a gas-tight barrier with low life cost benefits. Thu, 12 Aug 2010 13:55:00 GMT http://www.workingwithwater.net/view/11702/wastewater-odour-control-in-an-open-aeration-basin-/ http://www.workingwithwater.net/view/11676/swro-pretreatment-markets-and-experience-/ In the fourth of a series of articles, Graeme Pearce looks at the issues involved in the selection of pre-treatment in seawater reverse osmosis desalination applications. Wed, 11 Aug 2010 16:25:00 GMT http://www.workingwithwater.net/view/11676/swro-pretreatment-markets-and-experience-/ http://www.workingwithwater.net/view/11672/pharmaceuticals-ensuring-a-supply-of-pyrogenfree-water-/ In the pharmaceutical industry it is essential to eliminate pyrogens from the manufacturing process, and in particular from the water production plants they require. Claudio Maini and Luca Zonarelli of Veolia Water Solutions & Technologies explain the background and the development of new systems to minimise the risks. Wed, 11 Aug 2010 15:56:00 GMT http://www.workingwithwater.net/view/11672/pharmaceuticals-ensuring-a-supply-of-pyrogenfree-water-/ http://www.workingwithwater.net/view/11557/green-water-delivery-for-winter-olympics/ The organisers of this year's Winter Olympic Games demanded as much from its water infrastructure as did its competitors. A reliable, environmentally friendly water solution was required, which would remain viable long after the games had ended. This goal was achieved with the installation of a range of energy and space saving solutions. Fri, 06 Aug 2010 11:16:00 GMT http://www.workingwithwater.net/view/11557/green-water-delivery-for-winter-olympics/ http://www.workingwithwater.net/view/11147/wastewater-recycling-screener-boosts-wastewater-recycling-capacity/ A linen supply company has increased its wastewater recycling capacity by 67 per cent with a low cost screener retrofit. Thu, 22 Jul 2010 11:41:00 GMT http://www.workingwithwater.net/view/11147/wastewater-recycling-screener-boosts-wastewater-recycling-capacity/ http://www.workingwithwater.net/view/11065/powering-industry-with-recycled-water/ After six years of well below average rainfall, South East Queensland was in the grip of the worst drought in the state’s recorded history. A rapidly expanding population placed an unprecedented demand on the dwindling water supplies. In response, the Western Corridor Recycled Water Project began diversifying the region’s water sources by providing a new source of pure water to power stations. Mon, 19 Jul 2010 14:00:00 GMT http://www.workingwithwater.net/view/11065/powering-industry-with-recycled-water/ http://www.workingwithwater.net/view/10853/securing-sustainable-water-resources-with-offcreek-storage-/ The Clarence Valley Coffs Harbour Regional Water Supply project in Northern New South Wales, Australia, was developed to provide a sustainable, secure water resource beyond the year 2046. The $99.35 million Shannon Creek Storage component featured innovations in planning, design and construction to address environmental and engineering issues, which enabled the project to be delivered on time and within budget. Fri, 09 Jul 2010 13:00:00 GMT http://www.workingwithwater.net/view/10853/securing-sustainable-water-resources-with-offcreek-storage-/ http://www.workingwithwater.net/view/10722/modernising-irrigation-delivery-in-australia/ Efficient management of water is critical for the future of irrigated agriculture as climate change and ongoing drought reduces the amount of available water. Goulburn-Murray Water and its alliance, FutureFlow, have built the world’s largest automated channel control network, replacing a 100-year-old method of irrigation delivery. Mon, 05 Jul 2010 10:10:00 GMT http://www.workingwithwater.net/view/10722/modernising-irrigation-delivery-in-australia/ http://www.workingwithwater.net/view/10483/precoat-filtration-diatomaceous-earth-improves-filtration-at-desalination-plant/ Precoat filtration using a bulk handling system for diatomaceous earth has been introduced at a desalination plant in the USA as part of an improved pre-treatment process prior to reverse osmosis. Wed, 23 Jun 2010 16:40:00 GMT http://www.workingwithwater.net/view/10483/precoat-filtration-diatomaceous-earth-improves-filtration-at-desalination-plant/ http://www.workingwithwater.net/view/10321/reducing-water-in-an-activated-sludge-tank/ A small wastewater treatment plant in Switzerland needed an economical solution to tackle the initial stages of the process. The company found the answer in space-saving FHP pumps, utilizing a total of five at the plant. Since installation, the pumps have run continuously and without fault, only requiring scheduled maintenance. Wed, 16 Jun 2010 16:31:00 GMT http://www.workingwithwater.net/view/10321/reducing-water-in-an-activated-sludge-tank/ http://www.workingwithwater.net/view/10319/peristaltic-solution-keeps-plant-efficient/ A US city required a pump capable of accurately dosing 15% sodium hypochlorite for their new wastewater treatment plant. Pumping this anti-bacterial chemical can cause vapour lock in some systems, but choosing a peristaltic pump helped ensure efficiency and provided a hygienic and leak-free solution. Wed, 16 Jun 2010 16:00:00 GMT http://www.workingwithwater.net/view/10319/peristaltic-solution-keeps-plant-efficient/ http://www.workingwithwater.net/view/10248/portable-tech-for-offshore-locations/ In this article, Anthony Bennett investigates the application of small scale desalination technologies for remote commercial, industrial, military, naval, marine and offshore applications. He examines the thermal and membrane technologies available and the sizes of equipment employed from portable systems to larger containerized or skid/frame mounted plant. Tue, 15 Jun 2010 14:46:00 GMT http://www.workingwithwater.net/view/10248/portable-tech-for-offshore-locations/ http://www.workingwithwater.net/view/10247/potable-water-from-sustainable-energies/ In an attempt to meet the demands of the high energy process, the ProDes project is promoting the use of renewable energy in desalination. Through research, and a focused set of activities, the project aims to educate professionals on the barriers to achieving RE-desalination, and how they can be overcome. Tue, 15 Jun 2010 14:28:00 GMT http://www.workingwithwater.net/view/10247/potable-water-from-sustainable-energies/ http://www.workingwithwater.net/view/10246/reducing-footprint-with-isobaric-erds/ A growing demand for optimal efficiency in desalination means the use of energy recovery devices has become common practice. Not only is this economical, it reduces the carbon footprint in the face of ever increasing plant size. Jeremy Martin from Energy Recovery Inc explains how these benefits are achieved. Tue, 15 Jun 2010 14:00:00 GMT http://www.workingwithwater.net/view/10246/reducing-footprint-with-isobaric-erds/ http://www.workingwithwater.net/view/10245/construction-with-reinforced-plastic/ The increasing use of processing chemicals highlights the importance of chemical and corrosion resistance within the structure of the desalination plant. Addressing this one feature could prolong plant life. Kristel van Haaren, from DSM Composite Resins explains the advantages of replacing existing materials with composites such as glassfibre reinforced plastic. Tue, 15 Jun 2010 13:51:00 GMT http://www.workingwithwater.net/view/10245/construction-with-reinforced-plastic/ http://www.workingwithwater.net/view/10244/potable-water-using-thin-film-composite-/ Developers were required to provide a Chilean mine with its own drinking water supply, due to the constraints of the desert area. The successful pilot of a seawater membrane system led to a permanent solution which provides drinking water for the mining camp and process water for the filter units. Tue, 15 Jun 2010 13:16:00 GMT http://www.workingwithwater.net/view/10244/potable-water-using-thin-film-composite-/ http://www.workingwithwater.net/view/10240/water-access-in-remote-locations/ Flexibility is key when supplying the power to help access the water supply in a variety of different duties, from an African desert to organic farming in the UK. Grundfos' solar power systems were able to help the clients in each case extract the water they needed to make their businesses succeed. Tue, 15 Jun 2010 11:27:00 GMT http://www.workingwithwater.net/view/10240/water-access-in-remote-locations/ http://www.workingwithwater.net/view/10073/removing-arsenic-from-drinking-water/ The effects of consuming arsenic in drinking water range from suppression of the immune system to an increased risk of cancer. Legislation is being created and enforced to combat contamination. Frederick W Vance and Stephen Wrigley from Dow Water & Process Solutions discuss the latest treatments for arsenic removal. Wed, 09 Jun 2010 13:35:00 GMT http://www.workingwithwater.net/view/10073/removing-arsenic-from-drinking-water/ http://www.workingwithwater.net/view/9817/quarry-monitoring-and-eprmcerts-regulations-/ Developments in legislation have provoked companies to rethink their approach to environmental monitoring. In response, CEMEX has contracted RS Hydro to provide a long term, comprehensive solution through the installation of flow monitoring equipment at its UK sites. This article describes the challenges and benefits of the new legislation, while proving its goals to be achievable. Fri, 28 May 2010 14:41:00 GMT http://www.workingwithwater.net/view/9817/quarry-monitoring-and-eprmcerts-regulations-/ http://www.workingwithwater.net/view/9616/onsite-wastewater-recycling-at-an-australian-gold-mine/ An gold mining operation required a wastewater treatment system to enable water recycling on-site. The environmental initiative called for a solution which would achieve optimum performance while requiring little maintenance. The introduction of a Fixed Activated Sludge Treatment proved a successful addition. Thu, 20 May 2010 15:27:00 GMT http://www.workingwithwater.net/view/9616/onsite-wastewater-recycling-at-an-australian-gold-mine/ http://www.workingwithwater.net/view/9141/gibraltar-provides-a-wastewater-challenge/ The use of seawater for all of Gibraltar’s flushing needs is both economical and problematic. The Waterport pumping facility required a system which could cope with salt water corrosion and the heavy rag and solids in the wastewater. A solution was found which provides reliable service and brings significant cost-savings. Fri, 30 Apr 2010 11:00:00 GMT http://www.workingwithwater.net/view/9141/gibraltar-provides-a-wastewater-challenge/ http://www.workingwithwater.net/view/9093/evolving-urban-water-resource-management/ Population growth and improving standards of living, coupled with dramatically increased urbanization, are placing increased pressures on available water resources, necessitating new approaches to urban water management. Wed, 28 Apr 2010 16:00:00 GMT http://www.workingwithwater.net/view/9093/evolving-urban-water-resource-management/ http://www.workingwithwater.net/view/8652/swro-pretreatment-cost-and-sustainability-/ In the third of a series of articles, Graeme Pearce looks at the issues involved in the selection of pre-treatment in seawater reverse osmosis desalination applications. Fri, 09 Apr 2010 14:00:00 GMT http://www.workingwithwater.net/view/8652/swro-pretreatment-cost-and-sustainability-/ http://www.workingwithwater.net/view/8591/wastewater-treatment-enhanced-biological-treatment-of-storm-flows-/ Storm flows during wet weather can cause major problems in wastewater plants. A team put together by Veolia Water Solutions and Technologies describe how the BioACTIFLO process can provide biological treatment with high-rate clarification in such circumstances. Thu, 08 Apr 2010 00:13:00 GMT http://www.workingwithwater.net/view/8591/wastewater-treatment-enhanced-biological-treatment-of-storm-flows-/ http://www.workingwithwater.net/view/8566/biofouling-tep-a-major-challenge-for-water-filtration-/ Biofouling is a major and very expensive problem for the water industry. Biofilm resulting from the growth of microorganisms on reverse osmosis and ultrafiltration membranes is a serious issue in desalination and water treatment plants, requiring a variety of pretreatment strategies to minimise the problem. Tom Berman of the Kinneret Limnological Laboratory describes the latest thinking on the subject. Wed, 07 Apr 2010 14:31:00 GMT http://www.workingwithwater.net/view/8566/biofouling-tep-a-major-challenge-for-water-filtration-/ http://www.workingwithwater.net/view/8564/drinking-water-new-disinfecting-medium-boosts-water-treatment-/ A novel biocidal method for disinfecting drinking water has been developed by HaloSource Incorporated. Jeff Williams and Michael Bridges describe the development, effectiveness and applications for HaloPure Br. Wed, 07 Apr 2010 13:55:00 GMT http://www.workingwithwater.net/view/8564/drinking-water-new-disinfecting-medium-boosts-water-treatment-/ http://www.workingwithwater.net/view/7779/drinking-water-turnkey-project-brings-piped-treated-drinking-water/ More than 300,000 people in a remote district of Sri Lanka are today enjoying quality drinking water for the first time due to a turnkey project undertaken by Outotec for Sri Lanka's National Water Supply and Drainage Board. Wed, 03 Mar 2010 14:58:00 GMT http://www.workingwithwater.net/view/7779/drinking-water-turnkey-project-brings-piped-treated-drinking-water/ http://www.workingwithwater.net/view/7598/oil-and-gas-water-treatment-in-oil-and-gas-production-does-it-matter-/ Water is not normally associated in many people's minds with the production of oil and gas from underground reservoirs. Consequently, with no energy potential or sales value, is its separation, treatment and disposal important? David Robinson discusses issues surrounding the handling of water in the production of oil and gas. Wed, 24 Feb 2010 15:48:00 GMT http://www.workingwithwater.net/view/7598/oil-and-gas-water-treatment-in-oil-and-gas-production-does-it-matter-/ http://www.workingwithwater.net/view/7432/uv-treatment-a-mobile-water-solution-for-native-american-tribes/ US-based UV disinfection specialist Aquionics met with an unusual request when it was asked to help design a mobile UV disinfection system with in-house engineering staff for a Native American tribal reservation in rural Montana, USA. Thu, 18 Feb 2010 14:59:00 GMT http://www.workingwithwater.net/view/7432/uv-treatment-a-mobile-water-solution-for-native-american-tribes/ http://www.workingwithwater.net/view/7425/water-pumps-cope-with-festival-demands/ More than 60,000 visitors attended this years Pinkpop Festival drawn by headline acts including Bruce Springstein, Depeche Mode and Franz Ferdinand. The three day annual rock event, held in the city of Landgraaf in the Netherlands, places huge demands on the temporary infrastructure built to support the clean water demands of the revellers. Thu, 18 Feb 2010 13:52:00 GMT http://www.workingwithwater.net/view/7425/water-pumps-cope-with-festival-demands/ http://www.workingwithwater.net/view/7264/nitrate-removal-multizone-ion-exchange-with-less-waste/ An IChemE-award winning ion exchange system which removes nitrate from groundwater with minimum use for chemicals, reduced power consumption and waste volumes has been installed by ACWA Services at a number of UK water treatment works. Fri, 12 Feb 2010 11:43:00 GMT http://www.workingwithwater.net/view/7264/nitrate-removal-multizone-ion-exchange-with-less-waste/ http://www.workingwithwater.net/view/7260/wastewater-treatment-eliminating-offensive-odours-from-wastewater/ A novel underground solution to locating the Besos Wastewater Treatment plant in Barcelona, Spain required additional measures to deal with offensive odours. Fri, 12 Feb 2010 10:00:00 GMT http://www.workingwithwater.net/view/7260/wastewater-treatment-eliminating-offensive-odours-from-wastewater/ http://www.workingwithwater.net/view/7248/process-water-treatment-ultrasonic-system-delivers-benefits-for-resin-plant/ A Netherlands-based chemicals manufacturer has installed a water treatment system combining ultrasonic microbiological control and corrosion inhibitors, and has reaped environmental and economic benefits. Thu, 11 Feb 2010 16:29:00 GMT http://www.workingwithwater.net/view/7248/process-water-treatment-ultrasonic-system-delivers-benefits-for-resin-plant/ http://www.workingwithwater.net/view/7246/water-treatment-reverse-osmosis-softens-water-in-wisconsin/ A city in the USA needed to replace its aging water softening technology. After considering the options, a new reverse osmosis system was selected. Thu, 11 Feb 2010 16:00:00 GMT http://www.workingwithwater.net/view/7246/water-treatment-reverse-osmosis-softens-water-in-wisconsin/ http://www.workingwithwater.net/view/7080/historic-city-saved-from-flooding-threat-/ Recent floods in Prague have required the implementation of control measures to protect the historic city from contamination from flooding and the threat of raw sewage escaping from surcharged stormwater sewers. The pumps used to control the flooding needed the combination of superior performance and low-life cost benefits and low fuel consumption. Fri, 05 Feb 2010 16:28:00 GMT http://www.workingwithwater.net/view/7080/historic-city-saved-from-flooding-threat-/ http://www.workingwithwater.net/view/7074/stadium-overhaul-is-pitch-perfect-/ Three of Ireland’s largest stadiums have recently been overhauled and Tsurumi Pumps was chosen for pitch dewatering and sewage handling. The systems includes a sophisticated and environmental-friendly irrigation system. Further, a high-tech approach provides far more accurate control and more eÿcient use of the pumps. Fri, 05 Feb 2010 15:57:00 GMT http://www.workingwithwater.net/view/7074/stadium-overhaul-is-pitch-perfect-/ http://www.workingwithwater.net/view/7070/energy-reuse-at-a-swedish-water-plant-/ When a Swedish wastewater treatment plant invested in new decanter centrifuges, Emotron variable speed drives were chosen. This was one of the first times that manufacturer Noxon had used Emotron VFX in its solution, with the energy generated by the braking motor being re-used by the driving motor. Fri, 05 Feb 2010 15:47:00 GMT http://www.workingwithwater.net/view/7070/energy-reuse-at-a-swedish-water-plant-/ http://www.workingwithwater.net/view/6053/water-quality-testing-in-the-scientific-study-of-mexican-cave-fish/ Using a Troll 9500 water quality sonde and Rugged Reader from RS Hydro, a team of scientists from around the globe studied the effect of the aquatic environment on Mexican cave fish Fri, 18 Dec 2009 14:13:00 GMT http://www.workingwithwater.net/view/6053/water-quality-testing-in-the-scientific-study-of-mexican-cave-fish/ http://www.workingwithwater.net/view/5475/telemetry-breakthrough-assists-aberystwyth-university-study/ Peat bogs are unique ecosystems often completely undisturbed by human influences, and are by their very nature often remote and inaccessible. The impact of re-opened paleo channels on the Tregaron Peat Bog region in Wales is currently being monitored and assessed by scientists from Aberystwyth University. The remote location has made long term monitoring via spot sampling costly and inefficient and RS Hydro were approached to provide a solution. Tue, 24 Nov 2009 00:00:00 GMT http://www.workingwithwater.net/view/5475/telemetry-breakthrough-assists-aberystwyth-university-study/ http://www.workingwithwater.net/view/5373/analysis-of-composite-nonmetallic-enclosures-for-use-by-waterwastewater-electrical-engineers/ Many perceived roadblocks to the use of non-metallic electrical enclosures for water and wastewater applications result from the lack of knowledge as to effective uses of non-metallic materials and/or the comparative performance benefits of non-metallic enclosures versus metallic alternatives. Often, the perception is that composite non-metallics are inferior to metallic materials. In reality, the opposite is frequently true and the intent of this paper is to detail the reasons why. Thu, 19 Nov 2009 00:00:00 GMT http://www.workingwithwater.net/view/5373/analysis-of-composite-nonmetallic-enclosures-for-use-by-waterwastewater-electrical-engineers/ http://www.workingwithwater.net/view/5292/legislation-and-market-forces-regulators-and-wastewater-reuse-/ Wastewater reuse is becoming increasingly important in many parts of the world. Anthony Bennett describes the role of regulators in this area and highlights how advances in filtration technology are driving the market. Tue, 17 Nov 2009 00:00:00 GMT http://www.workingwithwater.net/view/5292/legislation-and-market-forces-regulators-and-wastewater-reuse-/ http://www.workingwithwater.net/view/5163/environmental-monitoring-multielemental-analysis-of-environmental-samples/ Fast and accurate analysis of environmental samples is a must in order to restrict pollution. In this technical article, a team from Thermo Fisher examine a solution for sample analysis that aims to give fast and accurate multi-elemental analysis of samples. Wed, 11 Nov 2009 00:00:00 GMT http://www.workingwithwater.net/view/5163/environmental-monitoring-multielemental-analysis-of-environmental-samples/ http://www.workingwithwater.net/view/5105/climate-change-the-water-cycle-and-ac-drives-/ Climate change, increasing demands on water due to global urbanization and the legal obligations under the EUs Water Framework Directive are making the water sector an attractive place for technologies that can help reduce costs and contribute to reducing the effects of climate change. Here Heikki J. Kervinen of ABB discusses the influential role AC drives can play in meeting these challenges. Mon, 09 Nov 2009 00:00:00 GMT http://www.workingwithwater.net/view/5105/climate-change-the-water-cycle-and-ac-drives-/ http://www.workingwithwater.net/view/4464/matching-process-and-valve-systems/ Martin Hunt of Festo describes how companies can benefit from using the correct choice of valve technology. For one company, adopting the recommendation to change to pneumatic pinch valves instead of butterfly valves provided significant long-term cost savings and performance benefits. Fri, 09 Oct 2009 00:00:00 GMT http://www.workingwithwater.net/view/4464/matching-process-and-valve-systems/ http://www.workingwithwater.net/view/4466/investing-in-future-industry-efficiency/ Energy costs are soaring and water supplies are depleting. Instead of paying for the disposal of process water, companies could be reusing it and reaping the benefits. By installing additional filter technology, companies have the potential to see a return on their money within six months. Fri, 09 Oct 2009 00:00:00 GMT http://www.workingwithwater.net/view/4466/investing-in-future-industry-efficiency/ http://www.workingwithwater.net/view/4467/land-restoration-of-a-mining-community/ On the hills above Merthyr Tydfil, Miller Argent is undertaking a highly ambitious land reclamation scheme which also involves the extraction of coal by surface mining methods. The 'Ffos-y-fran Land Reclamation Scheme', is the third and final phase and is expected to run for approximately 17 years. The reclamation works will include the removal of all associated iron ore and coal workings that present a danger to humans, livestock and wild animals. Fri, 09 Oct 2009 00:00:00 GMT http://www.workingwithwater.net/view/4467/land-restoration-of-a-mining-community/ http://www.workingwithwater.net/view/4468/industrial-impact-on-estuarine-habitats/ The development of the coastal environment is taken for granted in most of the developed world. In this article, we examine how managers can protect the fragile environment by looking at emission controls, and include an overview of current strategic management approaches which seek to combine water quality controls with wider marine environment protection goals. Fri, 09 Oct 2009 00:00:00 GMT http://www.workingwithwater.net/view/4468/industrial-impact-on-estuarine-habitats/ http://www.workingwithwater.net/view/4438/membrane-technology-quality-water-in-unique-locations/ Improvements in RO membrane elements have provided a threefold increase in the amount of treated water per element while reducing energy costs in desalination and water purification projects around the world. Currently, desalination plants with Dow Water & Process Solutions technology enable more than 218 million gallons of freshwater to be produced every day. Thu, 08 Oct 2009 00:00:00 GMT http://www.workingwithwater.net/view/4438/membrane-technology-quality-water-in-unique-locations/ http://www.workingwithwater.net/view/4179/rapid-gravity-filters-in-desalination-pretreatment/ Mark Hadley, senior process engineer at Severn Trent Services, looks at how rapid gravity filters have developed to meet the demands for efficient solids removal at the pre-treatment stage of desalination plants. Fri, 25 Sep 2009 00:00:00 GMT http://www.workingwithwater.net/view/4179/rapid-gravity-filters-in-desalination-pretreatment/ http://www.workingwithwater.net/view/3982/tackling-drought-in-an-arid-climate/ Australia is one of the driest inhabited continents in the world, its rainfall is variable, droughts are common and water resources in many areas are scarce. Norrie Hunter reviews the problems, progress and solutions of the country’s seven year, $31 billion investment portfolio to improve its water and waste water services. Wed, 16 Sep 2009 00:00:00 GMT http://www.workingwithwater.net/view/3982/tackling-drought-in-an-arid-climate/ http://www.workingwithwater.net/view/3943/membrane-technology-recovery-of-waste-and-water-with-membranes-/ Efficient recovery of water and waste is something that membrane technology excels at. In this short article, we take a look at some new uses of membranes developed by a Dutch firm that specialises in innovative recovery applications. Fri, 11 Sep 2009 00:00:00 GMT http://www.workingwithwater.net/view/3943/membrane-technology-recovery-of-waste-and-water-with-membranes-/ http://www.workingwithwater.net/view/3436/maxflo-rice-hull-ash-as-an-efficient-filtration-aid-/ This article, from a team at Agrilectric, looks at the filtration properties of rice hull ash, including several examples of its successful use as a filter medium with water and wastewater. Fri, 21 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3436/maxflo-rice-hull-ash-as-an-efficient-filtration-aid-/ http://www.workingwithwater.net/view/3230/water-purification-ultrafiltration-for-portable-water-purification/ The US Army have deployed a new generation of water purification technology during their military operations: an ultrafiltration pretreatment for portable water purification unit. In this article, we take a look at the technology and how it works. Thu, 20 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3230/water-purification-ultrafiltration-for-portable-water-purification/ http://www.workingwithwater.net/view/3229/urban-desalination-using-thickening-technologies/ Ian Dunn explains the importance of using thickening technologies – especially lime - during the desalination process. Using several examples from Australia, he examines the importance of this technology for urban desalination provision. Sat, 15 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3229/urban-desalination-using-thickening-technologies/ http://www.workingwithwater.net/view/3225/geographic-focus-middle-east-providing-water-and-water-infrastructure-to-the-desert-/ Water, the scarcest natural resource in the Middle East, has always been a touchy subject in the region. ‘Water policy’ within and between nations has long determined each one’s approach to satisfying local and regional water demands. As water demands escalate at alarming rates, access to adequate supplies to meet ever growing populations, new business developments and the essential food production industry have and will continue to shape foreign policy within the region. Now, environmental considerations are having a deep impact on how countries develop their entire water and wastewater infrastructures. Norrie Hunter takes a look at recent developments and future plans for the area. Thu, 13 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3225/geographic-focus-middle-east-providing-water-and-water-infrastructure-to-the-desert-/ http://www.workingwithwater.net/view/3226/geographic-focus-middle-east-overview-of-water-related-infrastructure-projects-/ Thomas Tschanz of the McIlvaine Company takes a look at the major types of water infrastructure projects in the Middle East, and considers the importance of water to this area. Thu, 13 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3226/geographic-focus-middle-east-overview-of-water-related-infrastructure-projects-/ http://www.workingwithwater.net/view/3227/environmental-regulation-improving-river-water-quality-/ Dr Mike Coffey looks at how river water quality can be assessed objectively and considers how successful environmental regulations related to river and associated water streams have been in the UK, especially when dealing with difficult residual pollution problems. Thu, 13 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3227/environmental-regulation-improving-river-water-quality-/ http://www.workingwithwater.net/view/3231/conference-review-european-desalination-society-conference/ In May 2009 the spa town of Baden Baden, Germany, played host to the European Desalination Society’s Conference and Exhibition on Desalination for the Environment - Clean Water and Energy. Discussions focussed on the problems that many countries face in providing water for their populations, industries and agriculture. Bryan Orchard reports. Thu, 13 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3231/conference-review-european-desalination-society-conference/ http://www.workingwithwater.net/view/3029/weftec-2009-show-preview/ Working with Water spoke to some of the exhibitors who will be attending the US water event, about their new products and what they hope to gain from the water quality exhibition and conference. Tue, 04 Aug 2009 00:00:00 GMT http://www.workingwithwater.net/view/3029/weftec-2009-show-preview/ http://www.workingwithwater.net/view/2842/pump-control-system-offers-energy-savings-and-reduced-emissions/ Retroflo’s RPC_2000 pump control system can not only give energy and opeartional savings to the water industry, but also represents a breakthrough in the drive to reduce emissions. Wed, 29 Jul 2009 00:00:00 GMT http://www.workingwithwater.net/view/2842/pump-control-system-offers-energy-savings-and-reduced-emissions/ http://www.workingwithwater.net/view/2685/supplying-to-the-desalination-industry/ Veolia Water Solutions relates what desalination companies require from the pump industry. Thu, 23 Jul 2009 00:00:00 GMT http://www.workingwithwater.net/view/2685/supplying-to-the-desalination-industry/ http://www.workingwithwater.net/view/2308/managing-the-coastal-environment-coasts-estuaries-and-industrial-impact/ The development of the coastal environment is taken for granted in most of the developed world. In this article, we examine how managers can protect the fragile environment by looking at emission controls, and include an overview of current strategic management approaches which seek to combine water quality controls with wider marine environment protection goals. Wed, 24 Jun 2009 00:00:00 GMT http://www.workingwithwater.net/view/2308/managing-the-coastal-environment-coasts-estuaries-and-industrial-impact/ http://www.workingwithwater.net/view/1763/the-working-with-water-interview-david-waggonner-rebuilding-new-orleans/ Working with Water spoke with David Waggonner, principal at Waggonner & Ball Architects, about the importance of integrating water into the city structure of New Orleans. Leading the rebuild of the water damaged city is a challenge – not only must lessons be learned from existing and temporary infrastructure and political failures, but successful processes elsewhere in the world must be integrated with the uniqueness of New Orleans. Tue, 12 May 2009 00:00:00 GMT http://www.workingwithwater.net/view/1763/the-working-with-water-interview-david-waggonner-rebuilding-new-orleans/ http://www.workingwithwater.net/view/1443/usa-focus-california-water-infrastructure/ Norrie Hunter reports on how California is dealing with the problems of water shortage and seismic threats to the water infrastructure, by adopting measures to encourage a cultural shift in how west coast Americans regard and use their valuable water resources. Thu, 23 Apr 2009 00:00:00 GMT http://www.workingwithwater.net/view/1443/usa-focus-california-water-infrastructure/ http://www.workingwithwater.net/view/1453/opinion-british-water-a-common-ground-for-uk-standards/ A viewpoint from Mike Norton, chairman of the British Water package sewage treatment plant focus group. As the UK-based association and the Environment Agency begin to work together, common ground can be found, especially regarding standards. Thu, 23 Apr 2009 00:00:00 GMT http://www.workingwithwater.net/view/1453/opinion-british-water-a-common-ground-for-uk-standards/ http://www.workingwithwater.net/view/1445/managing-infrastructure-choosing-materials-for-large-diameter-mains/ Christophe Salles of Borealis AG takes us through the decision making process behind selecting the right material for large diameter water distribution mains, considering life cycle costing and installation costs. Fri, 17 Apr 2009 00:00:00 GMT http://www.workingwithwater.net/view/1445/managing-infrastructure-choosing-materials-for-large-diameter-mains/ http://www.workingwithwater.net/view/963/managing-infrastructure-deep-tunnel-breakthrough-for-sewer-project/ Nearly a mile long and 40 metres below ground, a key section of Belfast’s deepest tunnel was completed earlier this year, boosting Northern Ireland Water’s efforts to tackle river pollution and reduce flooding. Fri, 27 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/963/managing-infrastructure-deep-tunnel-breakthrough-for-sewer-project/ http://www.workingwithwater.net/view/965/filtration-technology-using-filters-to-meet-suspended-solids-consents/ The challenges of changing regulations and standards can mean difficult situations for water companies. As new discharge limits and controls come into force, traditional treatments can become redundant. Severn Trent Services explain how they have been using filtration technology to meet the challenges. Fri, 27 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/965/filtration-technology-using-filters-to-meet-suspended-solids-consents/ http://www.workingwithwater.net/view/966/managing-wastewater-using-membrane-bioreactors-for-water-supply/ In the quest for efficient and economical water use and land footprint in water production, membrane bioreactors (MBR) have been leading the way. In this article, we look at how the membranes in an MBR work, and some recent developments in this sector of the water industry. Fri, 27 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/966/managing-wastewater-using-membrane-bioreactors-for-water-supply/ http://www.workingwithwater.net/view/971/water-technology-using-valves-to-provide-water-for-drinking/ The subject of butterfly valve technology and its suitability for desalination plants raises a number of issues in respect of providing adequate protection against corrosion. Bryan Orchard visited the KSB Amri Water Valve Division Competence Centre in France to learn more about their technologies. Fri, 27 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/971/water-technology-using-valves-to-provide-water-for-drinking/ http://www.workingwithwater.net/view/974/reducing-environmental-impact-treating-odour-emissions/ There is an increasing requirement for sustainable treatment options to deal with the various types of emissions to the environment, including the bad smells occasionally generated by wastewater treatment processes. This article takes a look at a technology that can reduce and eradicate odour emissions. Fri, 27 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/974/reducing-environmental-impact-treating-odour-emissions/ http://www.workingwithwater.net/view/923/optimising-water-extraction-advances-in-land-use-management-techniques-/ The most important resource of all – water – is often difficult or expensive to extract, or not sited near to where it is needed. Anthony Bennett takes a looks at some techniques to assist the management of water and its extraction in the United Kingdom. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/923/optimising-water-extraction-advances-in-land-use-management-techniques-/ http://www.workingwithwater.net/view/925/environmental-concerns-maximising-water-recovery/ Environmental and water quality issues are high priorities for mineral processing projects, whether they are based in the deserts of Australia and Africa, or the frozen lands of Europe and North America. Highly accurate testing and engineering solutions were required when dealing with the environmentally sensitive Pogo gold mine in Alaska, upstream from the Yukon River. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/925/environmental-concerns-maximising-water-recovery/ http://www.workingwithwater.net/view/926/hydroelectric-power-harnessing-the-yangtze/ Hydro generators from Alstom are turning waterpower into electrical energy in the largest hydropower project ever built, the Three Gorges in China. In this article, we take a look at how the sheer size of the undertaking called for different engineering solutions. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/926/hydroelectric-power-harnessing-the-yangtze/ http://www.workingwithwater.net/view/930/industrial-wastewater-high-pressure-pump-solution-for-filter-cleaning-/ There is no doubt that efficient filtration is essential when dealing with industrial wastewater issues. In this article, Cat Pumps explain why the successful creation of a filter cake is the result of an effective filter cloth, and how regular washing can assist with ensuring this happens. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/930/industrial-wastewater-high-pressure-pump-solution-for-filter-cleaning-/ http://www.workingwithwater.net/view/932/mbr-technology-water-treatment-for-rural-areas/ Membrane Bioreactors (MBR) with submerged membrane modules are being adopted in many areas of the globe as the next generation of biological water treatment technology. We take a look at some of KMS’s recent projects. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/932/mbr-technology-water-treatment-for-rural-areas/ http://www.workingwithwater.net/view/933/wastewater-management-wastewater-plant-responds-to-population-growth-/ The town of Gillingham, England has responded to growing population and increased treatment standards by installing four of Nordic Water’s Dynasand moving sand bed filters. The installation in its present configuration is designed to meet anticipated needs till 2013 – but with additional media and designed capacity for a potential fifth unit, it is expected to meet Gillingham’s needs until the year 2020. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/933/wastewater-management-wastewater-plant-responds-to-population-growth-/ http://www.workingwithwater.net/view/934/water-management-learning-from-singapores-water-success-/ Singapore has increasingly been looked upon by the international community as a role model for water management. The city-state, which has no natural aquifers or groundwater, has made tremendous progress from facing challenges in water supply to setting the standards in sustainable water management. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/934/water-management-learning-from-singapores-water-success-/ http://www.workingwithwater.net/view/936/water-treatment-managing-the-problems-of-water/ In 2007, three companies collaboratated on a new water treatment plant for Bartlesville City, Oklahoma, USA. However, unexpected environmental influences and operational malfunctions caused problems for the project, testing the people of Bartlesville’s patience and their commitment to the water treatment plant. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/936/water-treatment-managing-the-problems-of-water/ http://www.workingwithwater.net/view/940/improving-infrastructure-supplying-clearer-fresher-water/ Scottish Water has embarked on a number of major infrastructure improvement programmes for its five million plus customers, but none as dynamic and important as the supply of fresh drinking water to Scotland’s largest city. Norrie Hunter reports on this massive, highly sensitive construction programme on the outskirts of Glasgow that marks a milestone in Scottish Water’s 10 year, £2.4 billion investment plan for Scotland. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/940/improving-infrastructure-supplying-clearer-fresher-water/ http://www.workingwithwater.net/view/948/reducing-environmental-impact-bioremediation-solutions-for-water-pollution/ Water pollution – especially as a result of oil production and storage – is an unfortunate fact of life. Finding a solution is not as obvious, especially if it has to fit around an existing infrastructure. We take a look at a development by BPC, which looks at bioremediation as a solution. Thu, 26 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/948/reducing-environmental-impact-bioremediation-solutions-for-water-pollution/ http://www.workingwithwater.net/view/870/recovering-water-in-beverage-and-food-production-/ As we are all aware, water is becoming a scarce and expensive commodity. The beverage and food industries, looking to increase the recycling of their process water to keep costs low, are turning towards membrane bioreactors for water treatment. Alfa Laval's Detlef Ahrens explains how it works. Wed, 25 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/870/recovering-water-in-beverage-and-food-production-/ http://www.workingwithwater.net/view/877/the-working-with-water-interview-ian-barbour-dow-water-solutions/ Working with Water spoke with Ian Barbour, General Manager of Dow Water Solutions, about the important issues of water provision and quality in the world today – from the cost of providing clean water in India, to desalination in Australia. Wed, 25 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/877/the-working-with-water-interview-ian-barbour-dow-water-solutions/ http://www.workingwithwater.net/view/878/using-filters-to-meet-suspended-solids-consents/ The challenges of changing regulations and standards can mean difficult situations for water companies. As new discharge limits and controls come into force, traditional treatments can become redundant. Severn Trent Services explain how they have been using filtration technology to meet the challenges. Wed, 25 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/878/using-filters-to-meet-suspended-solids-consents/ http://www.workingwithwater.net/view/879/preventing-contaminated-storm-water/ A wastewater treatment plant in Spain was looking to install a range of equipment to prevent contaminated water being washed into nearby rivers during heavy rainfall. The plant decided to install a series of stormscreens and pumps from Mono NOV in order to tackle this serious environmental issue and ensure the river was kept clean, regardless of the weather. Wed, 25 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/879/preventing-contaminated-storm-water/ http://www.workingwithwater.net/view/880/using-clay-pipes-for-sewage-and-land-drainage-/ The demands on ducting and land drainage equipment vary by geographical location and industry needs. In this case study, we take a look at UK-based Naylor Drainage that expanded its product range in order to offer a solution for a sewage transfer system. Wed, 25 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/880/using-clay-pipes-for-sewage-and-land-drainage-/ http://www.workingwithwater.net/view/718/wastewater-treatment-energyefficiency-the-future-of-wastewater-/ The Harnaschpolder wastewater treatment plant, based in the Netherlands and run by Veolia, is a great example of a modern filtration system with a look to the future. Filtration+Separation visited the plant to find out how it operates. Wed, 18 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/718/wastewater-treatment-energyefficiency-the-future-of-wastewater-/ http://www.workingwithwater.net/view/387/3d-pipe-design-constructing-aquariums-with-computer-design/ In the past, designing piping was a laborious and haphazard job. Three-dimensional computer design has revolutionized the whole construction process - and certainly made the process a great deal easier for the designers of a complex water piping system for a new shark exhibit in a 90 year old Chicago museum. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/387/3d-pipe-design-constructing-aquariums-with-computer-design/ http://www.workingwithwater.net/view/388/wastewater-treatment-an-alternative-approach-to-dosing/ Cost and consent levels have made it all the more important to control phosphate levels in wastewater. Partech describes an alternative to the traditional methods of iron salt dosing which can improve dosing accuracy and efficiency. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/388/wastewater-treatment-an-alternative-approach-to-dosing/ http://www.workingwithwater.net/view/396/successful-environmental-monitoring-/ Reducing the environmental impact of water management and infrastructure projects is becoming an essential part of the business. In this article, Dr Mike Coffey looks at the role environmental monitoring can play and how to design an effective program. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/396/successful-environmental-monitoring-/ http://www.workingwithwater.net/view/402/using-large-diameter-ro-elements/ In wastewater plants, the 8-inch diameter x 40-inch long RO element has been the standard in RO systems for many years, but is clearly not the optimum for today’s large systems. Peter Moss, Robert Skelton and Michael Tylla of Koch Membrane Systems examine the issues related to the use of large elements, and show how these challenges have been addressed. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/402/using-large-diameter-ro-elements/ http://www.workingwithwater.net/view/404/phospate-removal-making-a-splash-with-binders/ Swimmers were put off by an excess of blue green algae at a popular lake in Germany. Application of a phosphate binder produced a remarkable reduction in phosporus, decreasing the presence of algae and making the lake habitable again for humans and animals alike. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/404/phospate-removal-making-a-splash-with-binders/ http://www.workingwithwater.net/view/412/managing-long-term-sustainable-water-use-/ How does the hydrological cycle – in all its varying scales – work? What are the threats to water budgets and water quality? In this article, we take a look at the impact of human use and how we can interact with the water cycle in a long term and sustainable way. Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/412/managing-long-term-sustainable-water-use-/ http://www.workingwithwater.net/view/414/learning-to-live-with-drought/ The Australian town of Goulburn’s timely water initiative presents a model for the future as cities learn to live with drought and other water challenges. Was an ultraviolet disinfection scheme for irrigation part of the answer? Wed, 04 Mar 2009 00:00:00 GMT http://www.workingwithwater.net/view/414/learning-to-live-with-drought/ http://www.workingwithwater.net/view/2064/conventional-and-membrane-filtration-selecting-a-swro-pretreatment-system-/ Seawater pre-treatment is an integral part of every seawater reverse osmosis (SWRO) desalination plant, used to remove particulates, debris, micro-organisms, suspended solids and silt from the source seawater. But with conventional and membrane filtration to choose from, which is right for you? Nicolay Voutchkov compares the two options. Mon, 09 Feb 2009 00:00:00 GMT http://www.workingwithwater.net/view/2064/conventional-and-membrane-filtration-selecting-a-swro-pretreatment-system-/ http://www.workingwithwater.net/view/2063/desalination-planning-green-seawater-desalination-in-carlsbad-/ Nikolay Voutchkov takes us through one of California’s most advanced desalination projects – the Carlsbad seawater desalination plant – and explains the associated climate action plan in order to keep the plant as carbon neutral as possible. Sat, 04 Oct 2008 00:00:00 GMT http://www.workingwithwater.net/view/2063/desalination-planning-green-seawater-desalination-in-carlsbad-/