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DESALINATION CASE STUDIES

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DESALINATION PRODUCTS

HERO™ (High Efficiency Reverse Osmosis) Technology

HERO™ (High Efficiency Reverse Osmosis) Technology

Aquatech offers HERO™, the highly innovative and patented technology delivers unmatched value for the treatment in a variety of industrial water and wastewater applications. Using HERO™ directly translates into improved plant performance and reduced overall costs.
Mobile Reverse Osmosis (RO)

Mobile Reverse Osmosis (RO)

The Mobile Reverse Osmosis unit from Evoqua Water Technologies is a self-contained system that employs pretreatment and reverse osmosis (RO) capability in a single trailer. The system is capable of producing 200 gpm of low conductivity product water under a variety of raw water conditions.

ACTIFLO®

ACTIFLO®

Actiflo™ is a compact process that operates with microsand (Actisand™) as a seed for floc formation. Actisand™ provides surface area that enhances flocculation and also acts as a ballast or weight to aid a rapid settlement

WATER<I>TRAK</i>&trade; Reverse Osmosis

WATERTRAK™ Reverse Osmosis

Reverse Osmosis uses a semi-permeable spiral wound element to remove up to 99% of dissolved solids and bacteria from the feed water source
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DESALINATION APPLICATION NOTES

Chinese Chemical Plant Optimizes Water Treatment By Replacing Double Pass RO With A Single Pass RO And Liqui-Cel® Contactor System

Electrodeionization (EDI) is widely used in many industrial water treatment systems throughout the world. In order to maximize the operating stability and life expectancy of an EDI system they were often designed with double pass RO using caustic injection pretreatment. By Membrana

Application Note: Desalination Plants: YSI Instruments Monitor Flow & Water Quality At Multiple Stages

Desalination is the process of removing salt from sea water or brackish river or groundwater to make potable water. By YSI
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DESALINATION WHITE PAPERS

  • White Paper: Understanding Differences Of Boiler Feedwater Pretreatment Equipment
    White Paper: Understanding Differences Of Boiler Feedwater Pretreatment Equipment

    As a water treatment professional, there are several reasons for understanding the various types of boiler pretreatment equipment. It is helpful to grasp all selection criteria for the type of pretreatment. These factors are used for deciding what new equipment to install or why the existing equipment is appropriate or not appropriate. By Dave Christophersen, Veolia Water Solutions & Technologies

White Paper: Enhancement To Popular Pre-treatment Filtration System Improves Desalination Efficiency

Due to widespread global water shortages, population growth, urban and suburban sprawl, and more, the world is struggling to maintain access to a pure, potable supply of water for both municipal and industrial applications. By Severn Trent Services

White Paper: Impact Of HTA Dosing On Vent Stream Acidity Of An Acid Dosed MSF Plant

As a part of the HTA dosing trial, a vent and distillate sampling system was designed to monitor acidity due to carbon dioxide in the MSF plant. This paper will discuss the results of the HTA dosing trial with respect to the effect on venting and corrosion.
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DESALINATION SUPPLIERS

  • Amiad Water Systems
    Amiad Water Systems Amiad Water Systems has more than 40 years experience as an industry-leading supplier of automatic self-cleaning filters, valves and accessories.
  • Aquatech International Corporation
    Aquatech International Corporation Established in 1981, Aquatech International Corporation is a global leader in water purification technology for industrial and infrastructure markets with a focus on desalination, water reuse, and zero liquid discharge.
  • Filtronics, Inc.
    Filtronics, Inc. Filtronics has manufactured water and waste water treatment systems for industrial and municipal applications since 1974
  • PEPCON Systems
    PEPCON Systems PEPCON Systems (PEPCON) designs, manufactures and services equipment that utilizes a proven electrochemical process to safely and economically treat water and control odor in a variety of applications. These systems are marketed under the names ChlorMaster® and OdorMaster® and are available worldwide.
  • QUA Group
    QUA Group

    QUA® headquartered in USA, is a developer and manufacturer of leading-edge advanced membrane products used in the water, wastewater, and water reuse markets. Sold exclusively through a global network of qualified OEM's, QUA's product offering includes their innovative Fractional Electrodeionization (FEDI®) stack, which has superior hardness tolerance compared to the other electro-deionization products on the market and their NSF Certified Q-SEP® Ultrafiltration (UF) membranes.

  • Severn Trent Services
    Severn Trent Services

    Severn Trent Services is a leading supplier of water and wastewater treatment solutions. We provide our clients with some of the industry’s brightest minds, advanced technologies, and quality products to provide you with truly efficient, cost-effective solutions to your water and wastewater challenges

  • Evoqua Water Technologies
    Evoqua Water Technologies

    Evoqua Water Technologies, formerly Siemens Water Technologies, is a leader in water and wastewater treatment products, systems and services for industrial and municipal customers. We offer a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options.

  • Veolia Water Solutions & Technologies
    Veolia Water Solutions & Technologies

    Veolia Water Solutions & Technologies offers comprehensive water and wastewater solutions for industrial and municipal customers. With unique technologies and process expertise, Veolia specializes in engineering, design, and project management, construction and execution.

  • Leopold -- A Xylem Brand
    Leopold -- A Xylem Brand

    Leopold - A Xylem Brand has long been a worldwide leader a in the water and wastewater treatment industry supplying both filtration and clarification systems. Since its establishment in 1924, Leopold has pioneered and acquired a number of innovative technologies aimed at improving the quality of water while reducing costs.

DESALINATION VIDEOS

Mobile Combination Reverse Osmosis Treatment Service

Mobile Combination Reverse Osmosis Treatment Service

Generally used for short-term or emergency water needs, mobile water treatment services from Evoqua Water Technologies provide a convenient source of water to match customer site and raw water conditions.

Video: MEMCOR Submerged Membrane System Starts Up At Orange County Water District

Video: MEMCOR Submerged Membrane System Starts Up At Orange County Water District

The Orange County Water District (OCWD) of Fountain Valley, California needed to increase its potable water supplies to meet the future water demands of this fast-growing area.
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ABOUT DESALINATION

 

Desalination is the process of removing salt and other minerals from saline water. In regions of the world where water is scarce, such as Saudi Arabia, desalination is seen as a viable alternative to more traditional potable water treatment. Desalination has also been used to produce a reliable water supply in tourist destinations such as Aruba. Desalination has also been gaining traction in areas of rapid population growth such as Singapore and Beijing.

Traditionally, desalination plants have been expensive in comparison to traditional drinking water plants due to the upfront financing costs, treated water transportation costs and ongoing energy and concentrate disposal costs. However, as technical innovation brings the energy cost of desalination down and populations continue to migrate to warm, arid climates such as Phoenix, AZ, desalination is starting to catch on as a viable alternative.

All desalination processes involve three liquid streams. The first stream is the saline feed water which is also called brackish water or seawater. The second stream is the low-salinity product or finished, treated water. The third stream is the byproduct of the desalination process, the very saline concentrate brine or reject water.

The primary desalination process being used commercially for drinking water treatment is reverse osmosis, where a semi-permeable membrane is used to separate the salt and other minerals from the pure water. A reverse osmosis desalination system consists of four major processes. During the pretreatment phase, the incoming brackish or seawater is pretreated to adjust its pH, remove suspended solids, and control scaling to avoid fouling the membranes.

During the second phase, pumps raise the pressure of the pretreated feed water to create the correct pressure differential between the pressurized feed water and the product water to move the permeate through the membrane. The pressurization phase is followed by the separation phase, creating a freshwater product stream and a concentrated brine reject stream. Two of the most popular reverse osmosis membranes used during this phase are the spiral wound and hollow fine fiber membranes.

The final phase of the desalination process is the stabilization phase that often requires a pH adjustment and degasification before being transferred into the drinking water distribution system.