Water. desalination + reuse

SHOWCASE November-December 2014 | Desalination & Water Reuse | 31 | OsmOflO repOrts test win with brine reductiOn Australian desalination company Osmoflo has reported success with pilot tests of its concentrate reduction technology for reverse osmosis (RO) plants, The firm said its Brine Squeezer technology increased recovery from 80% to 95% in mine wastewater recovery. The pilot in a northern Australian mine treated brackish water with total dissolved solids (TDS) at 5,000 mg/l "significantly reducing" the volume of brine needing disposal the company reported. Osmoflo said the relatively high unit costs of the Brine Squeezer were offset by "massive" savings in concentrate disposal infrastructure such as evaporation lagoons or thermal systems. It said the target market was inland desalination plants where concentrate disposal has always been a challenge - particularly for large plants. The device is a RO system that can be added to almost any conventional RO system using the existing RO reject as feed water. The Brine Squeezer operates at or above the scaling threshold of sparingly soluble salts, and concentrates feedwater to a TDS of 100,000 - 120,000 mg/l. It recirculates concentrate in the high-pressure circuit to increase cross-flow and lower flux. A thermally degradable coating is applied to the membranes in situ to prevent irreversible fouling. The membranes are cleaned every one to four days by a special high-temperature cleaning process and the coating replaced. Osmoflo has three pilot units, and the company is currently looking for pilot opportunities and strategic partners in various regions and markets. ZerO liquid discharge plant fires up US water reclamation company, STW Resources Holding, has started operation of a Salttech zero liquid discharge water reclamation system demonstration in Fort Stockton, Texas. In the licensing agreement between the companies, Netherlands-based Salttech has provided its dynamic vapour recovery unit for demonstrations throughout the US. The demonstration includes a mobile unit capable of processing and reclaiming variations of contaminated water chemistries ranging from reject from Fort Stockton's reverse osmosis plant with a total dissolved solids (TDS) effluent at 11,800 mg/l and water from a local salt water disposal well 700 Emlen Way, Telford, PA 18969 Phone: +1 215-723-8155 Fax: +1 215-723-2197 E-mail: info@mp-gps.com www.mp-gps.com Ideal for desalination & water reuse plants The World's First Non-Metallic All-FRP Vertical Turbine Pump The patent pending Fybroc ® Series 8500 is the first and only pump of its kind PRIMARY ADVANTAGES • NO corrosion • NO harmful leaching of minerals FEATURES • Four pump sizes • Capacities to 2000 GPM (454 m 3 /hr) • Heads to 70 feet (21 m) per stage • Working pressures to 150 psig (1035 kPA) TYPICAL APPLICATIONS • Seawater intake • Brackish water reverse osmosis (RO) • Brine • Recirculation and transfer 1-2 pg Turbine Pump Ad 2013_Layout 1 3/24/14 2:42 PM Page 1 site that has oil and gas produced and flowback water with TDS at greater than 134,000 mg/l. Saltech claims its technology will have a major impact on desalination of seawater in almost doubling the recovery of fresh water to more than 95% with no discharge and no consumables requiring disposal. STW's business plan calls for the deployment and build-out of multiple sites for oil and gas customers and provision of water reclamation services for a per barrel fee. STW has commitments for the installation of Salttech systems to provide water-processing services. And STW is working with industrial, state, and municipal customers to apply the Salttech technology. ►

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