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Membrane Technology
Californian plant aims to eliminate demand for imported water
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iwater Inc, which focuses on providing clean water and treating wastewater, has been awarded a contract to design, supply and supervise the installation and commissioning of both ultrafiltration (UF) and reverse osmosis (RO) systems for the Groundwater Reliability Improvement Program (GRIP) advanced water treatment facility that is being constructed in Pico Rivera, Southern California, USA. The facility – rated at 56 million litres (4.8 million gallons) per day – will support the Water Replenishment District of Southern California in its aim to be 100% independent from imported water. Work on the site is scheduled to be completed by July 2018. ‘Biwater is on track to supply state-of-theart UF and RO systems by late 2017 for the new GRIP advanced water treatment plant. The membrane systems are two of the three key process technologies essential to the indirect potable reuse solution,’ commented Jorg Menningmann, president of Biwater’s membrane treatment and desalination sector. ‘Biwater’s membrane technologies will help replenish groundwater supplies to ensure local aquifers are sustainable and continue to be a vital and growing contributor to the region’s water demands.’ The source water for the new GRIP facility is tertiary effluent from two wastewater treatment plants. The ten-train UF process will remove particulate and organisms prior to the RO membranes, thereby contributing to stable RO operation and performance. To enhance overall system recovery rates, backwash waste from the primary UF system will be processed by a subsequent secondary recovery UF system. Overall recovery for the UF system will be 99.7%. Thereafter, the UF filtrate will be treated by four primary RO trains (two stage) followed by four concentrator RO trains (single stage), running at a product recovery rate of 92.7%. The RO membranes will remove/reduce ionised salts and dissolved organics such as metals, nitrates and total organic content. The combined RO product then will be sent through a chemical oxidation/ultraviolet reactor advanced oxidation process, which will break down low molecular weight compounds that are contaminants of emerging concern (CECs). The system operations will be optimised before start-up with data gathered from pilot
plant operations that will run concurrently with the initial design phases of the project. These data will be instrumental in tuning chemical feed rates and membrane cleaning frequency and techniques, says Biwater. As the raw water source is unique and variable (with two different sources) the pilot plant data will be invaluable and enable the company to begin initial operations under optimum conditions. Biwater’s ultimate goal for the pilot plant is to fine tune the operations to reduce energy and chemical consumption, and extend the useful service life of the membranes. Contacts: Biwater Inc, 190 E. Arrow Highway, Unit F, San Dimas, CA 91773, USA. Tel: +1 909 5994129 Biwater Holdings Ltd, Biwater House, Station Approach, Dorking, Surrey RH4 1TZ, UK. Tel: +44 1306 740740, www.biwater.com
Oasys enhances its ClearFlo technology platform
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asys Water Inc, a US desalination systems and water treatment company that specialises in forward osmosis (FO), has enhanced its ClearFlo technology platform. The company has recently released ClearFlo MBCx which, it says, combines advancements in membrane performance, system architecture and controls for an exponential improvement in capabilities and performance. According to Oasys, ClearFlo MBCx is the result of more than two years of research and development in membrane and system design. It says that together these provide a significant expansion in the range of applications and improvement in performance that its technology provides. The platform dramatically extends the capabilities of the firm’s flagship FO-based system by increasing system flux by more than 100%, whilst integrating controls that provide far greater system flexibility and performance to aggressively drive down system life-cycle costs. The MBCx makes high recovery brine concentration and zero liquid discharge (ZLD) viable for new applications – such as extending the production of fresh water from sea-water desalination plants where intake expansion is not feasible or where environmental pressure on brine discharge is growing, says the company. In Oasys’ current applications the MBCx greatly expands economic value to customers. For example, in the oil and gas industry where the total cost to treat produced water applications
January 2017
NEWS/IN BRIEF can be now reduced to below $2 per barrel – which is competitive with transportation and injection well disposal in most cases – the MBCx expands opportunities in this market just as this sector begins a long awaited recovery. ‘Oasys has changed the water treatment game yet again,’ commented the firm’s CEO Jim Matheson. ‘The MBCx represents the largest leap forward for Oasys’ award-winning technology in our eight-year history. It is the result of an intense and comprehensive two-year R & D effort taking on board what we have learned from our early commercial system operations and dedicated pilot efforts. This latest wave of innovation has enabled us to break the back of many of the previous limits facing membranes for industrial wastewater applications – both for FO and RO based systems.’ ‘It is enabling Oasys to expand from providing the world’s leading FO membrane brine concentration systems to supporting its customers and partners with the best membranebased technology and products to treat a wider spectrum of the world’s most difficult waters.’ In addition to extending the performance envelope for high salinity brine concentration, Oasys has adapted the MBCx to handle high recovery, water reuse for wastewater streams in the brackish water range of 5000–25 000 mg/l of total dissolved solids. MBCx systems optimised for brackish streams provide recovery of 90% or greater from sources such as cooling tower blowdown, food and beverage production wastewater, electronics wastewater and other sources which, until now, have been limited to treatment with high-pressure reverse osmosis, at recovery levels of 70% or less. The MBCx dramatically reduces wastewater volumes for discharge to evaporation ponds, publicly operated treatment works, or for final treatment in ZLD scenarios. Oasys is planning to deliver MBCx systems to its partners and customers in early 2017, following completion of an active pilot testing programme across a variety of wastewater types and applications. Contact: Oasys Water Inc, 21 Drydock Avenue, 7th Floor, Boston, MA 02210, USA. Tel: +1 617 963 0438, www.oasyswater.com
LiqTech and Hunan Yonker Water set up joint venture in China
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anish cleantech company LiqTech International A/s, which develops
January 2017
silicon carbide (SiC) membranes, and environmental protection firm Hunan Yonker Water Co Ltd have signed an agreement to set up a joint venture in China. LiqTech says that this agreement, which represents the second joint venture it has signed for the Chinese market place, covers filtration systems based on its SiC membrane technology used in water and wastewater treatment by industrial municipal facilities. In addition, Hunan Yonker Investment has agreed to purchase 4 000 000 shares of LiqTech common stock at $1.00 per share. The closing of this purchase is subject to receipt of all government approvals in the USA and China, which are expected to be received by late February 2017. Zheng Jun Liu, Chairman, Yonker, remarked: ‘Yonker has spent the last 18 years becoming a leading environmental company in China. Our presence in water treatment in China is very strong and we believe that LiqTech has developed a silicon carbide membrane and water treatment systems that will have great opportunity in China. We are convinced that our joint venture will have significant potential as many of our customers need better water treatment.’ China is focused on the environment and investment in clean water will increase significantly in the coming years. Aldo Petersen, Chairman, LiqTech, added: ‘Our joint venture with Yonker is the next step of our strategy for our development of business in China. We have been in discussions with a number of water treatment companies and investors in the country. Yonker has established a strong presence in the water treatment market and we believe the joint venture represents the best opportunity for LiqTech’s success in China. We share the same vision and business strategy as Yonker.’ In August 2016 LiqTech signed an agreement with Chinese company Kailong High Technology to establish a joint venture for the production and sale of SiC-based diesel particulate filters (see Membrane Technology September 2016, page 5). Contacts: LiqTech International A/s, Industriparken 22C, DK-2750 Ballerup, Denmark. Tel: +45 4498 6000, www.liqtech.com Hunan Yongker Water Co Ltd, 18th Floor, Hualing Mansion, No. 111 Furong Middle Road Second Section, Changsha, Hunan 410005, China. Tel +86 731 844 29770, www.yonkergroup.cn/en
In Brief Citic Envirotech announces incorporation of new subsidiary in Singapore Citic Envirotech Ltd has announced that its has incorporated a new subsidiary, Memstar Holding Pte Ltd, in Singapore, pursuant to a joint-venture agreement with Dr Lin Yucheng, Dr Ge Hailin and Aquarius Membrane Llc. The company says the purpose of this joint venture is to enter into, amongst other things, the business of manufacturing and selling reverse osmosis and nanofiltration membranes, with the aim of accelerating sales of membrane products, including microfiltration and ultrafiltration membranes currently manufactured by wholly owned subsidiary Memstar Pte Ltd. AquaVenture acquires Aguas de Bayovar US-based Water purification AquaVenture Holdings Ltd’s Seven Seas Water business has acquired all the outstanding shares of Aguas de Bayovar Sac (ADB) and all the rights and obligations under a design and construction contract for a desalination plant and related infrastructure located in Peru. The aggregate purchase price for the acquisition was approximately $46 million in cash. ADB supplies both sea water and desalinated process water – purified using sea-water reverse osmosis – to Compañía Minera Miski Mayo Srl, which uses the water to operate its Bayovar phosphate mine that is located in North Western Peru, approximately 966 km (600 miles) north of Lima. Seven Seas Water plans to improve the operating efficiency of the desalination plant, which is expected to lower costs and improve reliability. Aquaporin Asia receives Frost & Sullivan award Singapore’s Aquaporin Asia Pte Ltd was recently awarded the 2016 Frost & Sullivan Asia Pacific Best Practices Award for Water Technology Entrepreneurial Company of the year. ‘Receiving recognition from Frost & Sullivan for a second year running showcases the unique value generated from playing a part in Singapore’s vibrant Hydro Hub,’ commented Mark Perry, Vice President, Business & Sales Asia, Aquaporin Asia. Hyflux Asset Management divests 50% stake in Galaxy Newspring Singapore’s Hyflux Ltd’s board of directors has announced that its indirect whollyowned subsidiary Hyflux Asset Management Pte Ltd (HAM) is to divest 195 296 428 of its ordinary shares in the share capital of Galaxy NewSpring Pte Ltd – representing 50% of the total issued and paid-up share capital of Galaxy – to Yunnan Water (Hong Kong) Co Ltd.
Membrane Technology
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