Recovery, Water Reuse, Namibia
Papers deadline stretched for IWA reuse conference
The International Water Association (IWA) has extended the deadline for submission of outline papers for the 9th IWA International Conference on Water Reclamation & Reuse.
Pretreatment adaptation for Namibian SWRO plant
A 400 m³/d seawater reverse-osmosis desalination plant in Walvis Bay, Namibia, is to be upgraded under a contract announced at the end of September by Aqua Services & Engineering (ASE).
WABAG completes Namibia reclamation plant
Austria-based water engineering group, WABAG, has completed a water reclamation plant in Namibia's capital Windhoek.
Field results in Namibia and Brazil from new solar desalination system
Aimed at rural and coastal zones, a new thermal desalination system with heat recovery has been developed and tested in different countries. The system has a desalination tower with multiple stages and a set of solar thermal collectors. This article presents the field results of two systems tested in Brazil, and the numerical results of a design installation for Namibia. For Namibia, six systems are planned with capacity of 400-500 L/d. In Brazil, two systems with a 35-40 L/d capacity were tested. This article first appeared in the February/March 2011 issue of Desalination & Water Reuse magazine.
Namibia nears deal on Areva desalination plant
The Namibian government has claimed to be close to completing its acquisition of a N$ 3 billion (US$ 220 million) desalination plant owned by French engineering giant, Areva. Negotiations over the deal started in 2014. Local newspapers have reported that both parties were expected to conclude their offers by the end of this month.
Mine wants state desalination plant despite OK for own project
Namibian mining company, Rössing Uranium, has restated its preference for procuring water from national water utility, Namwater, despite having completed a feasibility study of its planned desalination plant north of Swakopmund.
Rio Tinto mine mulls building Namibian desalination plant
Rio Tinto's Rossing Uranium mine in Namibia is planning an environmental impact study for its proposed water desalination plant.
Areva insists Namibian desalination plant is for sale
Areva Resources has denied recent reports that it plans to give, free of charge, its desalination plant at Wlotzkabaken in Namibia to the south-west African country's government. The Paris-based infrastructure company insisted it intended to sell the N$ 3 billion (US$ 250 million) desalination plant to Namibia.
Areva set to hand over desalination plant to Namibia
French nuclear group, Areva, is poised to hand over a desalination plant to the Namibian government, for an undisclosed sum according to the south west African country's chamber of mines.
Namibian mines get mixed messages
Namibian uranium mines have received mixed news on the prospects for an end to their struggle to secure cheaper and secure water supplies through new desalination facilities.
Namibia moves to buy Areva desalination plant
Namibia has moved on its declared intention to offer to buy Areva's 20 million m³/d water desalination plant in the country.
Namibian government poised to table offer for Areva desalination plant
Namibia's government is poised to table an offer to buy Areva's seawater desalination plant at Trekkopje and to use the 20 million m³-a-year facility to supply the country's semi-arid Erongo region.
Namibian uranium mine ponders desalination project
Namibian uranium mining firm Rössing Uranium is investigating the economic viability of designing, constructing and operating a new desalination plant to supply its operation in the economically important Erongo Region where water is scarce.
Mining slump threatens Nambia's desalination
Investments in desalination and electricity generation in Namibia could be in jeopardy following a dramatic slowdown in mining output in 2008, according to a new report published on 5 May 2009 by the International Monetary Fund.
Singapore setting for Desalitech pilot plant
A 200 m³/d pilot reverse-osmosis (RO) water treatment unit is to be set up in Singapore by Desalitech Ltd under a contract from a client who has yet to be named.
Osmoflo wins industrial water-reuse project
Australia's Osmoflo has won a tender to design, build, operate and maintain a Aus$ 5 million (US$ 5.3 million) water-recycling plant and reticulation system at the Nyrstar Port Pirie smelter north of Adelaide in South Australia.
China's Tri-Tech acquires Wisconsin desalination provider
Desalination and wastewater treatment provider J&Y International Inc, based in Wisconsin, USA, was acquired by subsidiaries of Tri-Tech Holding Inc of China on 9 June 2011.
Arizona wants DPR/seawater desalination plan to start now
An immediate start on work to prepare for direct potable water reuse and seawater desalination is proposed by the Arizona Department of Water Resources (ADWR) in a report recently published by the US state's government.
Escondido moves towards indirect potable reuse
The City of Escondido in southern California, USA, could be about to follow neighbour San Diego in setting up an indirect potable water-reuse (IPR) scheme as part of a wastewater facility upgrade costing about US$ 200 million.
GE signs Saudi Arabian wastewater-reuse MOU
GE has signed a memorandum of understanding (MOU) on wastewater reuse with Miahona, a subsidiary of the Arabian Company for Water & Power Development Ltd.
B&V puts forward four water-reuse recommendations
Four key recommendations have been put forward by Dan McCarthy, president and CEO of Black & Veatch's global water business, for overcoming global barriers to reuse of water as part of an integrated water industry portfolio.
Innovations in IDA Congress technical program
Round-table sessions and touch-screen availability of poster presentations will be used for the first time in the International Desalination Association's World Congress in Dubai on 7-12 November 2009, IDA announced on 19 October 2009.
US govt to invest US$ 135 million in water reuse
The US Department of the Interior announced on 15 April 2009 the investment of US$1 billion under the American Recovery and Reinvestment Act of 2009 (ARRA) in America's water infrastructure to create jobs and get the economy moving again. Of this, US$ 135 million is available for grants for water reuse and recycling projects.
Water-reuse funding may be used to counter drought
The US Secretary of the Interior Ken Salazar on 26 February 2009 called on the Bureau of Reclamation to explore ways in which funds recently appropriated to Reclamation under the American Recovery & Reinvestment Act for water reuse and other water projects might be used to help stretch California's water supplies in the coming months.
US water and wastewater may get US$ 11.8 billion boost
Water reuse measures totalling US$ 126 million to be undertaken by the Bureau of Reclamation are one of a number of measures included in the US$ 825 billion economic recovery legislation proposed by the House of Representatives Appropriations Committee on 15 January 2009, which is also likely to benefit upcoming desalination projects.
ALADYR affiliates to International Desalination Association
The Asociación Latinoamericana de Desalación y Reuse del Agua (ALADYR) has become the newest affiliate organization to join the International Desalination Association (IDA), bringing to 15 the number of regional and association IDA affiliates around the world.
CaribDA to hold water reuse workshop in April
The Caribbean Desalination Association is to hold a Water Reuse Workshop in April 2013.
Tata power plant installs cooling water reuse
India's largest power company, Tata Power, has installed a reverse osmosis plant at its Power House #6 power station in Jamshedpur to recover and reuse blow-down water from cooling towers.
Asia-Pacific water-recycling conference calls for papers
The Australian Water Association (AWA), an affiliate of the International Desalination Association has collaborated with the Water Services Association of Australia and WateReuse Australia to present the Asia Pacific Water Recycling Conference 2013.
IDA announces May 2013 oil and gas conference
The International Desalination Association (IDA) is to organize its first technical conference focused on water treatment strategies for the oil & gas industry.
San Diego approval leads large SoCal water reuse surge
The board of the San Diego County Water Authority on 22 May 2014 approved support for the City of San Diego's proposed large-scale water recycling project, Pure Water San Diego, which the water authority has identified as the region's most likely next source of local supply.
Escondido hires consultants for potable water reuse
The City of Escondido in southern California approved on 27 June 2012 spending of US$ 1.14 million to hire a team led by Black & Veatch and including Brown & Caldwell for services towards its Indirect Potable Reuse Program.
Desalination / reuse part of large EIB loan to Spain
Desalination plants, water-reuse schemes and connections from them to water networks will be among schemes funded by a € 350 million loan from the European Investment Bank (EIB) to the Spanish government agency Acuamed.
World Bank publishes report on Arab water reuse
Total water reuse in the Arab world is estimated at 2,170 million m³ per year, according to a report just published by the World Bank summarising the findings of the Expert Consultation Meeting on Wastewater Management in the Arab World, convened in Dubai in May 2011.
US$ 6.25 million equity investment for Desalitech
Reverse-osmosis (RO) innovator Desalitech Inc has secured an equity investment of U$$ 6.25 million led by Liberation Capital LLC, which will be used for business expansion and working capital.
MBR/RO at heart of PepsiCo reuse plant in Chile
A membrane bioreactor (MBR), reverse osmosis (RO) and ultraviolet (UV) disinfection are all part of a wastewater treatment and reuse plant upgrade being completed by Siemens Industry Automation Division for PepsiCo in Chile.
Study starts on salinity reclamation of W Australian river
Mitigation measures such as desalination and diversion could be proposed for the Collie river basin in Western Australia as a result of an independent review of possible strategies for salinity recovery, which has just been started by consultants KPMG and Worley Parsons.
Trekkopje SWRO opened at Namibian uranium mine
The 55,000 m /d Trekkopje seawater desalination plant in Nambia was opened on 16 April 2010 in the presence of Namibia's minister of agriculture, water and forestry, John Mutorwa, and former president, Same Nujom. Designed and constructed by Keyplan, a South African specialist water treatment subsidiary of the Aveng Group, the Trekkopje seawater reverse-osmosis plant, in the heart of the Namib desert, turns Atlantic seawater into high quality potable water for use at the Trekkopje uranium mine operated by Areva Resources Namibia. The plant is currently being commissioned and has already produced high quality water. This followed a detailed environmental impact assessment, taking into account specific aspects of the coastline and potential carbon footprint of the operation. This article was originally published in the May/June 2010 issue of Desalination & Water Reuse magazine.
X-Flow commissions Chinese produced-water projects
Three water-reuse projects for oilfields in China that use Pentair X-Flow ultrafiltration (UF) membrane technology have been commissioned recently.
Decentralised RO desalination plants serve Indonesian rural areas
Danish pump/reverse-osmosis company Danfoss launched its small-scale desalination unit, the Watercube 2, in 2009. The mini-plant was built round Danfoss pumping and energy‑recovery technology. The company then spun off this technology into a new company AqSep, which removed the attractive packaging and relaunched the machine as the WM9000E. The new model has a very functional design, was made for very easy maintenance and yet is compact and lightweight. This article describes how the WM9000E has now found favour in Indonesia due to its lower cost in remote areas compared with piped systems. This article first appeared in the May/June 2012 issue of Desalination & Water Reuse magazine.
Singapore ratchets up developments in water reuse
PUB aims to complete its 12,500 m3/d demonstration-scale plant for MBR systems for water reuse in mid-2017.
IDA issues call for Tianjin World Congress papers
The International Desalination Association (IDA) has issued a call for papers for its World Congress 2013 - Desalination: A Promise for the Future which will take place in China.
The Long Read: Where's the innovation in brine treatment?
As water scarcity bites and the drive to recycle water grows, the focus on recovering clean water and other resources from brine is sharpening. The challenge is particularly pertinent for industrial operators.
Mitsui acquires minority stake in Water Standard
Houston-based Water Standard Management (US) Inc, which focuses on water treatment for enhanced oil recovery (EOR), announced on 30 May 2012 that Japan's Mitsui & Co Ltd has acquired a minority interest in the company.
Aquatech wins ZLD job in Turkmenistan
Aquatech has been awarded a contract to design and supply a zero‑liquid discharge ZLD wastewater-reuse system in a gas‑field development project in Turkmenistan.
The Long Read: Do we have the technology for potable water reuse?
Water reuse for drinking purposes is racing up the agenda in the US and elsewhere. Work to draw up new rules for potable reuse is advancing in states including California and Arizona, as well as in Canada and the European Union. Technologies are being piloted, and plants permitted.
ACWA Emirates delivers MBR reuse plant for Saudi Aramco
ACWA Emirates has completed a water reuse plant at Shaybah Oilfield, Saudi Arabia, for crude and natural gas exporter Saudi Aramco.
Egypt's first ZLD plant is up and running
The first zero liquid discharge (ZLD) plant in Egypt, part of a water treatment facility designed and supplied by Aquatech, has been commissioned.
Desalitech recognised for topping water recovery rate records
Desalitech has won the IDA Industry Technology and Innovation Leader in Water Reuse and Conservation Award of Distinction, thanks in part to its work at Padre Dam Advanced Water Reclamation plant in Southern California.
Another oil-sands evaporation contract for GE in Alberta
GE has won its fifth contract in the Alberta oil sands of Canada for use of its evaporation technologies for recycling the blowdown from once-through steam generators (OSTGs).
Papers invited for 2013 AWWA/AMTA event
With the 2012 AWWA/AMTA Membrane Technology Conference under way this week in Phoenix, Arizona, a call for papers has been issued for next year's event in Texas.
Pilot vapour-recompression plant tackles oil and gas water
A pilot project to treat produced water from oil and gas operations in southern Saskatchewan, Canada, has been initiated by Purestream Technology of Salt Lake City, USA, using its advanced vapour recompression (AVARA) system.
CCD starts a new generation for reverse osmosis desalination
D&WR published an article in our August/September 2010 issue announcing Desalitech Ltd's Closed Circuit Desalination. Since that time, the company has acquired the services of Rick Stover (ex Energy Recovery Inc and Oasys Water). Here, he outlines the development of CCD technology since our previous article. This article first appeared in the November/December 2011 issue of Desalination & Water Reuse magazine.
Chinese steel manufacturer chooses KMS UF membranes
Koch Membrane Systems Inc (KMS) announced on 12 December 2011 that it had been selected to supply ultrafiltration (UF) membranes for a large-scale wastewater recycling system for Yingkou Medium Plate Co Ltd in Yingkou City, Liaoning Province, China.
ERI chief looking to a bigger future
Energy Recovery Inc (ERI), manufacturers of energy-recovery equipment for desalination plants, announced the appointment of Tom Rooney to succeed GG Pique as CEO back in February 2011. D&WR caught up with Rooney at the International Desalination Association's World Congress in Perth and asked him how he saw the company's present situation and its future. This article first appeared in the November/December 2011 issue of Desalination & Water Reuse magazine.
Cadagua selects PX devices for Al Zawrah desalination
PX energy-recovery devices have been selected for the 45,000 m³/d Al Zawrah seawater reverse-osmosis (SWRO) desalination plant in Ajman, UAE, by the consortium led by Spanish company Cadagua.
ERI chief calls for less plant downtime
The new CEO of Energy Recovery Inc (ERI), Tom Rooney, in an interview with Desalination & Water Reuse (D&WR) at the International Desalination Association's World Congress in Perth, Australia, on 7 September 2011, revealed that the company was now focusing on the issue of plant utilization.
Desalitech's Rick Stover: "The world's experts on desal and reuse are coming to Miami"
Desalitech executive vice president Rick Stover says that delegates can expect stimulating open forum discussions, papers and research at the IDA Energy and Environment Conference in Miami, USA, December 2016
New XPR technology expands ERD market potential
Frequent starting and stopping for PX energy-recovery devices (ERDs) at a pair of power stations in Denmark, led to troubles with the pressure-exchangers, with one eventually being removed entirely from one train. In March this year, the remaining train was successfully retrofitted with an XPR ERD, which to date is working flawlessly. The author looks at the history of ERDs and the introduction of the XPR device which might open lower energy-cost markets to isobaric energy-recovery. This article first appeared in the August/September 2011 issue of Desalination & Water Reuse magazine.
Water Standard's revised strategy paying off
In 2008, Water Standard announced itself as a provider of ship-based desalination and water treatment services, primarily for municipalities and industry. But two agreements announced at the end of June 2011 demonstrate how much the company has reshaped its strategy since those early days. The first signing was for a global frame agreement with Shell to develop technology and innovative water-based approaches in support of Shell's enhanced oil recovery (EOR) projects worldwide. The second was for the company to collaborate with Samsung Heavy Industries of Korea to on the design and development of vessels to deliver water treatment solutions to the offshore oil and gas sector. D&WR editor Robin Wiseman asked Water Standard's CEO how these latest developments fit the company's strategy. This article first appeared in the August/September 2011 issue of Desalination & Water Reuse magazine.
Ozwater '12 abstracts required before 1 September
The Australian Water Association (AWA) has issued a call for papers for Ozwater '12 to be held on 8-10 May 2012 in Sydney.
Gradiant spins out subsidiary Gradiant Energy Services
Boston based industrial water solutions specialist Gradiant has formed a new subsidiary, oilfield services company Gradiant Energy Services (GES).
ACWA wins two membrane-based projects in Saudi
Two separate contracts for membrane-based water and wastewater projects in Saudi Arabia have been awarded to ACWA Emirates LLC of Dubai.
Water industry investment fund secures $300 million institutional backing
Resonance Industrial Water Infrastructure, an investment fund focusing on water projects, has raised $300 million from institutional investors in the UK, US and the Nordics.
Pentair to buy CPT division from Norit
Pentair Inc is to acquire the Netherlands-based Clean Process Technologies (CPT) division of Norit Holding BV in the second quarter of this year for € 503 million (US$ 705 million), plus net debt at closing.
Vacuum-driven MD breakthrough promised by memsys
Vacuum-driven membrane distillation (MD) delivers high flux and true multi-effect distillation with very good energy recovery. The process runs at low temperature levels and is fully modular. This article describes the background of the development of the memsys company, membrane distillation, its specific advantages and potential applications, current and planned demonstration plants, and MD s future role in desalination. This article first appeared in the February/March 2011 issue of Desalination & Water Reuse magazine.
Finance agreed for Camarillo regional desalter studies
Two water districts and two - possibly three - cities in southern California have agree to finance studies for a regional brackish-water desalination plant to be located near Camarillo.
Desalitech teams with TEC to target municipalities
Reverse osmosis (RO) specialist, Desalitech, has tied up with Treatment Equipment Company (TEC) to provide sales support for municipal water treatment projects.
GE expands HERO licensing agreement
GE Power & Water announced on 1 February 2011 that it has completed a new expanded licensing agreement to allow it to continue offering High Efficiency Reverse Osmosis (HERO) systems to help more of its industrial customers increase their water usage efficiency and reuse capacity.
Fluid dynamics secret to pressure-booster record
At the EuroMed conference in Tel Aviv, Israel, in October 2010, those on the FEDCO booth at the exhibition were all wearing big smiles. The reason was the performance achieved by the company s turbocharger energy-recovery device (ERD) for the Jeddah III seawater reverse-osmosis desalination project. A condition of the contract was that the ERD transfer efficiency exceeded 80%, something which had never before been achieved. Not only did the FEDCO machine hit the target, but the company predicts it can go even higher. This article first appeared in the November/December 2010 issue of Desalination & Water Reuse magazine.
New thinking required to overcome potential water-reuse barriers
From October 2009 through June 2010, Black & Veatch conducted a series of six high-level roundtable discussions around the globe that brought together about 75 industry thought leaders to review the barriers to water reuse and to explore the solutions and processes needed for overcoming them. Overall, participants in the six roundtable discussions agreed that adequate future water supply hinges on intelligent recovery and reuse. But advancing the option of water reuse will require new ways of thinking and new paradigms. This article first appeared in the November/December 2010 issue of Desalination & Water Reuse magazine.
Seawater Reverse Osmosis Desalination: Innovative Intake Designs
The search for additional reductions in the cost of seawater reverse-osmosis (SWRO) desalination needs new leads now energy recovery has gone about as far as it can go. The authors believe this can be done by improving raw-water quality using innovative intake designs. The use of "filtration" type intakes can have a significant effect on reducing the life-cycle cost of a SWRO plant. This article first appeared in the November/December 2010 issue of Desalination & Water Reuse magazine.
Federal funds for Melbourne reuse project
Federal government funding totaling Aus$ 11.4 million (US$ 11.2 million) will enable City West Water in Melbourne, Australia, to roll out an aquifer and storage recovery scheme as part of its West Werribee Dual Supply project.
The big push
UK-based researchers have developed a reverse osmosis desalination system that they say promises to meet the challenges in providing freshwater to the millions worldwide who lack access to it. The research leader explains how his team has addressed the dilemma of cutting energy demand while upping recovery. This article first appeared in the December 2015 issue of Desalination & Water Reuse magazine.
Nine water purification projects bag US$ 1.49 million in funding
The US Bureau of Reclamation has selected nine projects to receive US$ 1.49 million under its Desalination and Water Purification Research programme.
IDA finalises Huntington Beach desalination energy conference topics
The International Desalination Association (IDA) has finalised the speakers and topics for its new-style conference Desalination: An Energy Solution, which is being held on 2-3 November 2010 in Huntington Beach, California, the city likely to host the USA's next large desalination plant after Carlsbad.
New appointments for D&WR Editorial Board members
Two members of the Editorial Board of Desalination & Water Reuse have taken up new appointments.
Desalination and water reuse in updated San Antonio plan
The city of San Antonio in Texas, USA, has identified desalination and water reuse as major components of its updated water management plan, launched on 4 November 2009.
Doosan picks up prize for zero liquid system
Doosan Hydro Technology was among the winners of the 2015 David W York Water Reuse Project of Year Award for its part in the city of Palm Coast's zero liquid discharge (ZLD) plant at Citation Boulevard, Florida.
Australia's CSIRO demonstrations indirect stormwater reuse
Scientists at Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO) have bottled recycled stormwater as pure drinking water titled "Recharge", CSIRO announced on 17 September 2009.
CDM and Miahona in Saudi water partnership
US consultant CDM and Miahona (Our Water), a subsidiary of ACWA Power Development, have announced a new partnership to execute water projects in Saudi Arabia. The partnership will manage engineering and consulting for water sector projects, including providing studies, designs, construction management, operations, and management consulting services.
Treatment of process effluent water for reuse in food production
Effluent water reuse in the food industry raises inevitable questions about the risk and reliability of wastewater treatment and recovery processes in meeting the required standards. The author looks at how two food processing facilities adopted process water recovery and reuse shows how the benefits can be a maximized and how the challenges live among the detail. This article first appeared in the November/ December 2014 issue of Desalination & Water Reuse magazine.
Biwater finishes first half of Changi performance tests
The first half of the Sembcorp Changi NEWater Plant (SCNP) in Singapore completed performance tests on 14 July, contractor Biwater AEWT told D&WR. No date has been set for plant commissioning, says Biwater.
Desalination and reuse in California/New Mexico get funding
US Secretary of the Interior Ken Salazar announced on 1 July 2009 27 water reclamation and reuse projects in California and New Mexico identified by the Bureau of Reclamation to share in a total of US$ 134.3 million under the American Recovery & Reinvestment Act of 2009.
Victoria urged to set new reuse and desalination goals
A committee set up by the Victoria state government in Australia has recommended that enforceable water recyling and reuse targets at Melbourne's sewage treatment plants should be raised to 50% by 2012 and 70% by 2015.
Veolia buys rights to ZDD desalination technology
Veolia Water Solutions & Technologies has acquired worldwide rights to commercialize a new patented zero discharge desalination (ZDD) technology developed at the University of South Carolina by ZDD Inc.
Foxconn invests $30 million in ZLD to reduce intake from Lake Michigan, US
Taiwanese technology firm Foxconn is investing $30 million in a zero liquid discharge (ZLD) water reuse system at Wisconn Valley Science and Technology Park, Wisconsin, US.
Russian heavy oil recovery enhanced by water reuse
OPERATED BY Russia's second largest oil producer, a heavy oil field in northwest Russia has been increasing the volume of crude processing with technology that supports enhanced recovery rates and reduced environmental impact. In 2008, they took the first steps to develop a less water-intensive way of processing produced water by conducting a feasibility study comparing different water reuse strategies. By replacing traditional treatment methods with thermal evaporator technology for produced water, this will be the first entity in Russia to use recycled water from enhanced oil recovery in the treatment of heavy oil produced water. This article first appeared in the issue of Desalination & Water Reuse magazine.
Obama government allocates US$ 126 million for water recycling
The new US government led by President Obama is to provide US$ 126 million for water recycling projects, alongside US$ 6 billion for state potable water programmes and many other water funding resources.
Veolia Water Tech to deliver RO reuse plant for gold mine
Veolia Water Technologies has won a contract to design and supply a reverse osmosis (RO) plant enabling process water reuse at Fosterville Gold Mine in Victoria, Australia.
WateReuse has white paper for Obama and US Congress
The WateReuse Association prepared a white paper in December for the US Congress and President-elect Obama's transition team on Providing Safe, Secure and Sustainable Solutions for America's Water Needs.
Doing away with RO energy-recovery devices
Energy-recovery devices have been a crucial element in the reduction of the cost of desalination during the past decade, bringing the technology within reach of conventional water resources costs in certain circumstances. Typical energy consumption for seawater reverse osmosis (SWRO) is now around 2.5 kWh/m . Desalitech's Closed Circuit Desalination, which does away with an energy-recovery device, reports energy consumption for SWRO of 1.65-1.87 kWh/m . This article was first published in the August/September 2010 issue of Desalination & Water Reuse magazine.
Depth Exposed Membrane for Water Extraction (DEMWAX™)
DXV Water Technologies has designed a novel membrane system that uses natural pressure, a very low recovery rate and gravity flow of feedwater past the membrane surface, resulting in an elegant, efficient system. Since the invention of the reverse-osmosis (RO) membrane researchers have tried to harness natural water-pressure, but past attempts mimic onshore processes with their configuration, recovery and flux. This low-flux low-recovery process will require more membrane than traditional systems; however, the elimination of intakes, outfalls, pre-treatment, pressure vessels and piping, energy recovery devices and coastal land will result in a water cost that is below many traditional sources. In addition to substantial energy savings, environmental and economic benefits that the DEMWAX system offers include: Mitigation of 'Brine' Disposal - the extremely low-recovery operation results in 'brine' at approximately 2-3% more concentrated than the surrounding ocean. Mitigation of Impingement and Entrainment - the intake velocity is several orders of magnitude less than typical intakes, virtually eliminating impingement and entrainment. Scalability - the system can be readily expan ded with the addition of cartridges and pumps. This article was published in the May/June 2009 issue of Desalination & Water Reuse.
Combining Forward Osmosis with Reverse Osmosis
A combination of forward osmosis with reverse osmosis could facilitate the treatment of some high fouling wastewaters. The system uses brine to draw water from the wastewater without high pressure or turbulence. Key element is the membrane's ability to allow rapid passage of water without much internal concentration polarization. The diluted draw solution can then be desalinated by reverse osmosis. The Two-Way Osmosis or TWO system may also be usable in very remote areas, where seawater ponds can be built for evaporative recovery of salt. Catalyx is designing a pilot system (patent pending) to desalinate seawater without external electric power. This article was published in the May/June 2009 issue of Desalination & Water Reuse.
Korea puts $170m into desalination SWRO and water reuse
The Republic of Korea has recently funded a six-year US$ 170 million research initiative in seawater desalination. Over 500 researchers from 16 universities will contribute to the work of the 50-member core team. Government leaders funded the research initiative in part due to the success of South Korean multinational firms in the desalination export sector. However, the South Korean desalination initiative has a humanitarian goal as well, since much of the world's population faces a future of uncertain access to clean water. SeaHERO (Seawater Engineering & Architecture of High Efficiency RO) was launched by the South Korean government in August 2007. The program is coordinated by In S Kim, executive director of the Center for Seawater Desalination Plant located at Gung Ju Institute of Science & Technology. The six-year program has the goal of providing innovation in reverse-osmosis membranes, energy recovery and reducing the cost of engineering, procurement, construction, operation and maintenance. This article appeared in D&WR magazine's August/September 2008 issue.
AMTA unveils annual gongs for membrane experts
The American Membrane Technology Association (AMTA) has conferred its annual roster of awards for membrane specialists, include its Lifetime Service Award, Hall of Fame Awards, and Operator of the Year Award.
PUB 'to develop and commercialise' new technology with RfPs worth $23million
Singapore's national water agency PUB has issued requests for proposals (RfPs) in three fields of water technology research, with a budget totalling SGD 30 million ($23 million).
Piedmont Pacific's Jim Medanich dies at 75
One of the best loved characters of the desalination world passed away on 9 November 2013 - James Medanich, founder and president of Piedmont Pacific Corporation.
Desalitech to supply wastewater reuse system to steel mill
Desalitech is to supply an advanced wastewater recovery system to Mid American Steel and Wire, a leading supplier in the US wire and rod industry.
IDA Conference Report
Banff gathering charts oil & gas territory