Desalination, Reverse Osmosis, Wastewater Treatment, Reverse Osmosis, Hollow Fiber, Pacific, greenhouse gas, China, Renewable Energy


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Hydranautics to collaborate with Singapore's Memstar

Membrane manufacturer Nitto Denko/Hydranautics has agreed business collaboration with Memstar Technology Ltd, the Singapore-based manufacturer of high-performance hollow-fiber membranes.


Pacific Institute reports on desalination energy use

The Pacific Institute has published the next instalment of its series on Key Issues For Seawater Desalination in California, this time looking at energy requirements and associated greenhouse gas emissions for desalinated water.

Siemens wins OC membrane system contract

A hollow-fiber membrane pretreatment system is to be supplied to Orange County's Groundwater Replenishment (GWR) system expansion under a US$ 14 million contract won by Siemens in California, USA.

China's 2020 desalination plans could cause emissions surge

China's 2020 ambition to produce drinking water at 3 million m³day from desalination threatens to increase carbon emissions through increased use of largely coal-fired power generation according to the World Resources Institute (WRI). The institute said the energy penalty could be offset by some 75% by greater use of water reuse.

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.

Chinese desalination import ratio to fall, says report

Localisation of desalination products and systems in China is targeted to rise from 60% to 90% by 2020, according to market researchers Frost & Sullivan.

Dr Krishnamurthy Rao

IDA announces death of InDA founder

The International Desalination Association (IDA) has reported the death of India's "water man" and founder of the Indian Desalination Association (InDA) Dr CH Krishnamurthy Rao.

Dow to build RO membrane plant in Huzhou, China

A world-class manufacturing facility for Dow FilmTec™ reverse osmosis (RO) elements for desalination and water reuse is to be built in Huzhou, China, the Dow Chemical Co announced on 7 June 2012.

United Envirotech to acquire Singapore membrane-maker

Singapore's United Envirotech Ltd (UEL) is to acquire its own membrane manufacturing capability by spending S$ 293.4 million (US$ 231 million) on a 100% stake in Memstar Pte Ltd, a wholly owned subsidiary of Memstar Technology Ltd, also of Singapore, plus certain assets.

NanoH2O announces seawater membrane factory in China

Advanced desalination membrane-maker NanoH2O is to build a fully integrated manufacturing plant in Liyang, China, a city in the Yangtze River Delta, 250 km west of Shanghai.

Masdar city, Masdar Institute, Laborelec, and Degrémont to collaborate in renewable-powered desalination project

Abu Dhabi university, Masdar Institute of Science and Technology, has unveiled recently its research collaboration with three leading energy and clean technology corporations in a research project supporting the development of a full-scale, completely solar-powered, seawater reverse osmosis (SWRO) desalination plant in the United Arab Emirates (UAE).

Degremont chooses Dow for green reverse osmosis pilot

Suez Envionnement water treatment subsidiary, Degremont Technologies, has selected Dow Water and Process Solutions to supply ultrafiltration and reverse osmosis membranes for a pilot desalination project in Abu Dhabi, in partnership with renewable energy company Masdar.

New South Wales premier switches on Sydney desalination plant

Sydney's seawater reverse-osmosis desalination plant was switched on by New South Wales premier Kristina Keneally on 28 January 2008, providing water to meet up to 15% of Sydney's water needs.

Dow and Haier agree new domestic RO membrane supply

A new collaboration agreement has been finalised between Dow Water & Process Solutions (DW&PS) and Chinese global domestic products provider Haier for continued use of Dow membranes.

Olympics facilities manager appointed as Tri-Tech VP

Former Siemens engineer, Weidong Bi, who managed membrane-bioreactor and reverse-osmosis plants for the Olympic Games in China, is one of three senior executive appointments announced by Tri-Tech Holding Inc on 3 June 2010.

CDA/EDS seeking Qingdao desalination abstracts by 15 March

Abstracts for the 2011 Qingdao International Desalination Conference in China (20-23 June 2011) must received by 15 March 2011 with final papers by 10 May 2011.

Santa Cruz desalination EIR comment deadline in July

The draft environmental impact report (EIR) for the 2.5 MGD (9,500 m³/d) seawater desalination plant for the greater Santa Cruz area in California, USA, which was released on 13 May 2013, will be available for public comment until 15 July 2013.

Oasys furthers advance in China

US-based forward osmosis specialist, Oasys Water, has unveiled its latest advance in its bid to expand in China with its partner in the region, Beijing Woteer.

More desalination and reuse potential in Western Australia

Western Australia's Water Corporation is considering up to three seawater reverse-osmosis desalination plants along the southern coast of its area, known as Lower Great Southern, as part of a potential portfolio of water resources for the next 30 years.

Australia and NZ ferry RO units to Tuvalu

Australia and New Zealand are leading an urgent response to the drought currently afflicting the South Pacific islands of Tuvalu and Tokelau by transporting reverse-osmosis (RO) units to provide a water supply.

Avshalom Felber, formerly Israel Ports and Railway Authority CFO, and deputy director of budgets at Israel's Ministry of Finance, has steered IDE for 14 years

Interview: IDE Technologies CEO Avshalom Felber

Above all, IDE is a solutions provider. So says chief executive Avshalom Felber, the former financial whizz turned water industry leader, as he outlines the company's unique mix of thermal and reverse osmosis (RO) technologies, operational expertise, and contractual nous.

Australian wave-energy desalination pilot to get funding

Australia's Carnegie Wave Energy announced on 28 February 2013 that it had received a government grant of Aus$ 1.27 million (US$ 1.30 million) to support a wave-powered seawater desalination demonstration project.

Masdar steps up ties with China

Abu Dhabi's Masdar Institute of Science and Technology is stepping up its research collaborations, knowledge exchange and industrial partnerships, with China.

Global green group seeks to carve carbon emissions out of desalination

The Global Clean Water Desalination Alliance - H₂0 minus CO₂ initiative, launched at the current climate talks in Paris, has called on its 17-nation membership to use clean energy to power new desalination plants. The call was part of the alliance's aim to tackle the water-energy nexus and climate change.

Sinochem setting up seawater desalination industrial base

Sinochem Corp held a ground-breaking ceremony for a seawater desalination industrial base in Hangzhou, China, on 22 March 2011, coinciding with World Water Day

Qingdao desalination plant starts commercial operation

Spanish company Abengoa has begun commercial operations at the 100,000 m³/d desalination plant in Qingdao in Shandong province, the second largest commercial port in northern China.

Toray announces two Chinese SWRO membrane orders

Toray Industries Inc has received orders to supply reverse osmosis (RO) membranes to seawater desalination plants in Qingdao (Shandong) and Caofeidian (Tangshan, Hebei) in China.

Toray expands California membrane manufacturing site

Desalination membrane manufacturer Toray Membrane USA Inc has bought a third building located adjacent to its existing two-building manufacturing facility in Poway, California, USA.

Befesa chooses ERI again for Qingdao seawater desalination

The 100,000 m³/d Qingdao seawater desalination plant in China is to become the seventh Befesa- built reverse-osmosis plant to use PX isobaric energy-recovery devices from Energy Recovery Inc (ERI).

Norit to supply UF pretreatment for Qingdao desalination

Norit X-Flow has signed an agreement with Befesa to supply the UF pretreatment technology for the Qingdao Desalination Project in Shandong province, China.

The Aqualyng Recuperator energy-recovery device.

Aqualyng begins first phase of Chinese SWRO plant

Norwegian desalination company Aqualyng on 15 March 2010 began the construction phase of the 50,000 m³/d seawater reverse-osmosis plant to serve the water needs of the Caofeidian Industrial Zone 220km east of Beijing in China.

Severn-Trent wins Chilean mining desalination contract

US water and wastewater treatment company Severn Trent Services has been awarded a contract to provide a seawater desalination plant that will serve the potable and process water needs of the Minera Esperanza copper and gold mine in Antofagasta, Chile.

Wave energy for Perth southern desalination plant?

Australian wave-energy developer Carnegie Wave Energy Ltd (CWE) announced on 5 July 2012 that it had been advised by West Australia's Water Corporation that it wished to move forward on discussions for up to 2MW of renewable energy supply for the Southern Seawater Desalination Plant on an exclusive basis.

Befesa closes Quindao desalination finance

Spanish contractor Befesa announced on 23 July 2009 that its subsidiary Befesa Water has closed financing for the design, construction and operation over 25 years of a 100,000 m³/d seawater desalination plant in Qingdao, China.

LACSD signs up Desalitech for chloride‑removal test

Desalination system developer Desalitech is to support a pilot project with the Los Angeles County Sanitation Districts (LACSD) to upgrade two Santa Clarita Valley wastewater treatment plants in order to meet state‑mandated chloride limits, the company announced on 2 October 2013.

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.

Seprotech to acquire Canadian consulting group

Canadian membrane water treatment and reuse provider Seprotech Systems Incorporated has reached agreement to acquire 100% of WESA Group Inc, a professional services company with eight North American offices and one in El Salvador.

EDS unveils course on desalination and renewable energy

The European Desalination Society (EDA) has announced a four‑day intensive course on Wind and Solar Photovoltaic (PV) Powered Desalination Systems (Reverse Osmosis and Electrodialysis Reversal) to be held in the Canary Islands.

Fifth project enters the Masdar trial

An ongoing energy efficiency trial, in Abu Dhabi, of four new desalination plant designs is to get a fifth participant.

Xylem supplies wastewater denitrification systems in China

Water technology company, Xylem, has supplied denitrification systems to three wastewater treatment plants in eastern China as part of a national strategy to improve wastewater treatment by 90% over five years.

memsys and Horizon combine to reduce ZLD costs

A pilot trial is due to start in May 2014 of a method to reduce the costs of zero liquid discharge (ZLD) technology at a coal to chemical (CTX) project in northern China.

Sembcorp to build Chinese chemical wastewater plant

Sembcorp announced on 19 December 2013 that it would be developing a new industrial wastewater treatment plant in the Caofeidian Chemical Industrial Park in Hebei province, China.

Desalitech RO wastewater use 'will pay back in 6 months'

Desalitech, developer of the closed-circuit desalination (CCD) system, is to supply a zero liquid discharge (ZLD) advanced wastewater treatment system for a pesticide plant in Gujarat, India.

Chinese visitors for West Basin water-reuse plant

California's West Basin Municipal Water district announced on 26 April 2013 that earlier in the month it had received a visit from a group of public and private administrators from China interested to learn about water recycling facilities and the management experiences of US enterprises in wastewater treatment.

Chinese membrane wastewater firm gets big investment

Global investor KKR has entered into an agreement with United Envirotech Limited (UEL), a water treatment and recycling company in China, for a US$ 40 million common equity investment. KKR subscribed US$ 113.8 million convertible bonds issued by UEL in October 2011 to support the company's business expansion.

Sembcorp reuse closes Chinese port-zone's water loop

Singapore company Sembcorp today opens its first industrial water reclamation plant in China on 13 December 2011.

United Envirotech buys Xinmin wastewater concession

Membrane treatment specialist United Envirotech Ltd (UEL) announced on 3 October 2011 that the group has exercised a call option to acquire the entire equity interest of Tongji Environmental (China) Pte Ltd, the holding company for Aton Environmental (Shenyang) Co Ltd, for RMB 34.03 million (US$ 5.34 million).

STS wins Tianjin denitrification contract

Pennsylvania-based Severn Trent Services has received a contract to provide its Tetra® Denite® denitrification system for the Zhang Gui Zhuang Wastewater Treatment Plant (WWTP) in Tianjin, China.

MBR plant at heart of United Environtech contract in China

A 50,000 m³/d membrane-based wastewater treatment plant is to be built in Jiangsu Province, China, by United Envirotech of Singapore under a contract worth RMB 220 million (US$ 34.5 million).

Koch MBR system chosen by Chinese city

A membrane bioreactor (MBR) using membranes supplied by Koch Membrane Systems (KMS) has been chosen for a wastewater treatment plant operated by Zhangjiagang JinGang Sewage Treatment, a state-owned entity which looks after all municipal plants for the Chinese city of Zhangjiagang.

Chinese industrial wastewater job won by United Envirotech

Singapore-based United Envirotech Ltd, a membrane-based water and wastewater treatment company, announced on 8 February 2011 that it had signed a transfer-operate-transfer agreement with the management committee of the Nanpu Economic Development Zone in China to provide a 80,000 m³/d wastewater treatment plant and a 40,000 m³/d wastewater recycling plant.

Parkson breaks new ground with Saudi MBR plant

A 2,000 m³/d wastewater-reuse plant based on membrane bioreactor (MBR) technology has just been commissioned in Rabigh, Saudi Arabia, by Florida-based Parkson.

Siemens MBR contracted for Chinese industry park

An underground membrane bioreactor (MBR) system worth several million US dollars is to be provided by Siemens (Tianjin) Water Technology Engineering Co Ltd to Shenzhen Zhongying Precious Metal Co Ltd.

Azerbaijan will have largest UF plant for surface water

Work is due to be completed later this year on the world's largest ultrafiltration (UF) treatment plant for surface water which is to be built in Baku, Azerbaijan, by Dow Water & Process Solutions and HidroLotus LLC, a joint venture between the Azeri Hidro Group and the Turkish Lotus Group.

Oman funds renewable desalination research

Oman has approved funding for research into harnessing renewable energy sources for water desalination in the sultanate.

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.

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.

Singapore utility awards desalt deal to Chinese-led group

Singapore's national water agency, PUB, has selected the BESIN-UEN consortium - led by China's Beijing Enterprises Water Group (BEWG) - as the preferred bidder to construct the second reverse osmosis (RO) plant sited at Changi under a public/private partnership.

Toray sets up Chinese manufacturing joint venture

An agreement was reached in late November 2008 between Toray Industries Inc and China Blue Star & BS group to establish a new joint company for water treatment in Beijing.

Multi-technology GE upgrade for Russian refinery treatment

Membrane bioreactor (MBR), electrodialysis reversal (EDR) and reverse osmosis (RO) technology will all feature in a major upgrade for the wastewater treatment at one of Russia's biggest oil refineries.

Oasys forward osmosis concentrates in China

Massachusetts-based Oasys Water has claimed its recent contract to supply a forward osmosis brine concentrator to a fossil-fuelled power plant in China to be a world first.

H2O Innovation lands San Jose WTP ultrafiltration contract

A 30 MGD (113,562 m³/d) hollow-fiber ultrafiltration (UF) membrane water treatment system in California is one of three new contracts totaling Can$ 8.8 million (US$ 8.1 million) announced on 21 May 2014 by H2O Innovation.

Solar power installed soon for Nauru desalination plant

Singapore's Hitachi-Aquatech has awarded a contract to two New Zealand companies for a 131 kWp solar system to power a desalination plant for the Pacific island of Nauru.

Masdar green desalination competition kicks off

All four participants in the competition to develop sustainable means to meet the United Arab Emirates' potable water demand have begun operating small-scale experimental desalination plants at a pilot facility set up by the competition organizer, Masdar, in Abu Dhabi.

H2O Innovation lands three water/wastewater contracts

H2O Innovation Inc announced on 14 January 2014 recent contracts totalling Can$ 6.5 million (UA$ 5.93 million) in Western Canada's energy sector.

Chinese licensee joins Dow residential Filmtec program

Haier Group of China, a leading multinational home appliances and consumer electronics company, has become the latest official licensee to partner with Dow Water & Process Solutions in its newly launched Filmtec™ reverse osmosis (RO) ingredient branding program.

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.

San Diego gives green light to potable reuse plan

San Diego's city council has given the green light to the construction of a 415Ml/d facility for direct potable reuse of wastewater costing up to US$ 3.5 billion. The reverse osmosis recycling scheme is expected to meet as much as a third of San Diego's daily drinking water requirement by 2035 making it the second largest potable reuse plant in the US.

AMTA/WEF workshop set for Seattle in May

The American Membrane Technology Association (AMTA) has announced that it will be holding a Technology Transfer Workshop in Seattle, Oregon, in May in cooperation with the Water Environment Federation (WEF).

Oil/gas sector MBR leads new H2O Innovation jobs

Supply of a membrane bioreactor (MBR) wastewater treatment and reuse system to an industrial user in the oil and gas industry in Alberta, Canada, was announced by H2 O Innovation Inc on 8 March 2012.

Toray UF membranes online in North Dakota

An ultrafiltration UF system in North Dakota, USA, has become the first large municipal drinking-water system in the US to use Toray HFS-2020 UF membrane modules.

Ceramic filters bought for Saudi RO pretreatment

German start-up company ItN Nanovation AG, which makes nanofiltration ceramic products for the water industry, announced on 15 March 2011 an order in Saudi Arabia for its CFM Systems® nanoceramic-based filtration system for water purification.

Commission warns Australia about gas-production wastewater

Handling the wastewater resulting from coal-seam gas (CSG) production in Australia is likely to require a precautionary approach that will demand innovation from water managers and planners, and significantly greater coordination with existing project approval processes, the National Water Commission warned in December 2010.

Judge rejects lawsuit against water authority over Carlsbad emissions

US water conservation group, San Diego Coastkeeper, this week failed in its bid to sue the San Diego County Water Authority for alleged environmental negligence in its water supply projects. Coastkeeper claimed the authority made inadequate provision for the environmental impact of its water supply schemes including the giant Carlsbad project currently nearing completion.

Carlsbad desalination greenhouse-gas plan reaffirmed by CARB

The California Air Resources Board (CARB) has reiterated its support for the energy minimization and greenhouse-gas reduction plan proposed by Poseidon Resources for the Carlsbad desalination project.

The groundbreaking ceremony in Beijing

Toray sets up membrane JV in Beijing

A groundbreaking ceremony for a large membrane production facility was held in the industrial development area of Shunyi Airport, Beijing, China, on 24 August 2009.

MD desalination pilot successfully used with waste heat

Results from an Australian trial to demonstrate the potential for a membrane distillation (MD) process to use waste heat from heavy industry to desalinate saline effluent have shown the system can produce high-quality water at temperatures as low as 30°C without an increase in greenhouse-gas emissions.

Doosan Hydro wins Al Jubail membrane treatment contract

Florida-based Doosan Hydro Technology has been awarded a US$ 10 million contract by Daelim Industrial Co Ltd for the industrial wastewater treatment and reuse package on the Saudi Elastomers Project (SEP) located in Al-Jubail, Saudi Arabia.

Community-level solar RO plant (250 L/h capacity)

India's BARC develops small solar RO and UF units

Domestic and community-level reverse-osmosis (RO) desalination units have been developed for producing safe drinking water by Saly T Panicker at the Desalination Division of India's Bhabha Atomic Research Centre.

Bermuda-based group acquires 50% of Aqualyng China

Beijing Enterprises Water Group Limited (BEWGL) announced on 9 April 2010 that it had acquired a 50% equity interest in Aqualyng China Limited. Norway-based Aqualyng Holding AS, which has many years of experience in design, construction and installation of seawater desalination facilities, holds the other 50%.

Desalination quartet booked for Masdar pilot plants in UAE

Three major contractors in the global desalination business - Abengoa, Degrémont and Sidem/Veolia - together with forward-osmosis developer Trevi Systems, were awarded contracts on 5 May 2014 by Abu Dhabi's Masdar, to each start the construction of a 1,500 m³/d desalination plant as part of Masdar's pilot project announced in 2013.

Water Corporation cooperates on wave-energy desalination

Western Australia's Water Corporation has signed a cooperation agreement to support the wave-powered seawater desalination pilot project proposed by Carnegie Wave Energy Ltd.

El Paso to explore solar power for desalination plant

The City of El Paso Public Service Board voted on 10 February 2010 to explore the possibility of using solar power at the Kay Bailey Hutchison desalination plant in Texas, USA.

Quindao desalination event gets IDA support

The International Desalination Association (IDA) has announced its support for the 2012 Qingdao International Desalination Conference, jointly organized by China Desalination Association (CDA) and other groups, and supported by Asia-Pacific Desalination Association and related countries.

Australian SWRO firm signs MoU for Saudi pilot

Australian desalination start-up Water Resources Group (WRG) announced on 4 December 2012 that its subsidiary Water Resources International (WRI) had signed a memorandum of understanding with Knowledge Industry Company (KIC) of Saudi Arabia.

Saudis launch national solar desalination initiative

The King Abdulaziz City for Science and Technology announced on 24 January 2010 the launch of the National Initiative for Solar Water Desalination (NISWD) under the patronage of the King Abdullah bin Abdulaziz Al Saud.

Texas state funding wind-powered desalination pilots

The Texas Department of Rural Affairs (TDRA) is offering US$ 1.5 million to smaller local governments in the US state for brackish-water desalination demonstration projects using wind energy. Deadline for applications for the 2010 Desalination Fund is 29 January 2010.

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.

Patricia Burke, IDA secretary general

Tianjin selected for 2013 IDA World Desalination Congress

Tianjin, China, is to be the venue for the 2013 World Congress on Desalination & Water Reuse to be held by the International Desalination Association (IDA).

MIAC confirmed as IDA affiliate in China

The Membrane Industry Association of China (MIAC) is the latest affiliate to join the International Desalination Association (IDA).

Solar still v RO comparison for S Australia desalination

A full solar distillation plant was compared with reverse osmosis (RO) for a small groundwater desalination project in South Australia and RO was chosen as the preferred option.

Produced water will be pumped 45 miles and across a height of 700 metres to a new reservoir in Copiapó, near the Tierra Amarillo mountains, where mining companies operate. The system comprises five pumping stations, one at the intake, one at the treatment plant, two on the piping route, and one at the reservoir.

Chile project envisions multiple mining clients for solar-powered SWRO

Energias y Aguas del Pacifico (ENAPAC), a proposed solar-powered seawater desalination plant and water transport project aims to support expansion of mining operations in Chile's Atacama region.

'We know that there is a pipeline of projects that is good to follow in Latin America.' Silvio Oliva, Fisia Italimpianti managing director

Q&A: Fisia's Silvio Oliva on why the Italian firm is expanding into Latin America

Fisia Italimpianti managing director Silvio Oliva says that the combination of demand for water treatment and desalination in Latin America makes the region a interesting prospect for investment.

Bidding for largest solar desalination plant opens soon

Tenders for the world's largest solar-powered seawater desalination plant in Ras Al Khaimah, UAE, will be invited next month by utility company Utico Middle East.

Typical plant configuration based on Synwater 500 system

Bahrain MoU signed for wind-powered desalination technology

Wind-powered desalination technology is to be promoted in Bahrain under a memorandum of understanding (MoU) signed on 31 January 2011 between Jade Consultancy of Bahrain and Synlift Systems GmbH of Germany.

Masdar picks four firms to test new desalination techniques

Abu Dhabi clean energy company, Masdar, has selected four international water technology firms to test techniques that could reduce the energy intensity of desalination and lead to a large renewably powered water purification station.

IDA publishes program for Gulf desalination and environment seminar

The International Desalination Association has published details of program sessions and topics for its seminar on Desalination and the Gulf: The Relationship between the Environment and Meeting the Region's Water Needs, which will take place in Bahrain on 6-7 December 2010.

Abengoa takes stake in Beijing-based GreenTech

Spanish desalination and energy contractor Abengoa has acquired 25% of the Beijing-based water company GreenTech.

IDE wins Chinese follow-on order for four MED desalination plants

Four additional multi-effect distillation (MED) desalination units, each with a production capacity of 25,000 m³/day of distilled water, are to be supplied for Tianjin SDIC, China's new electricity- generation megaplant, by IDE Technologies of Israel.

The RO hall at the Thames Gateway desalination plant east of London.

Four-stage RO for London desalination plant

The UK's 150,000 m³/d Thames Gateway brackish-water reverse-osmosis (RO) desalination plant, which was opened by Queen Elizabeth's husband, the Duke of Edinburgh, on 2 June 2010, has a four-stage RO process.


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