DESALINATION CASE STUDIES AND WHITE PAPERS

Overcoming Difficult Conditions, Salty Groundwater And Changes In Feedwater Quality

Kibbutz Reim had to convert salty groundwater into a high quality irriga­tion resource in this desert-like region. High recovery was essential to this customer, both because of the limited amount of groundwater available and the challenge of brine disposal from their inland location.

Case Study: Aquatech Supplies One Of Most India's Largest Tertiary Treated Sewage Recycle Plants
The water supply body in Mumbai having increased water charges to almost a dollar per cubic meter of water in year 1998-99, and the huge water quantities demanded for processing of fertilizers, RCF required a solution wherein it could effectively recycle the sewage water to be made available by the Municipal body. By Aquatech International Corporation
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DESALINATION PRODUCTS

Integrated Solutions and Projects

Integrated Solutions and Projects

Veolia Water Technologies provides innovative solutions and technologies, technical expertise and project management services for water and wastewater treatment systems. Our work scopes range from treatment evaluations to full-scale system design and turnkey installation. Our integrated solutions are offered through a variety of flexible project delivery options including Engineer and Procure (EP), Design Build (DB), and Design Build Operate contracts.

MECTAN® Induced Vortex Grit Chamber

MECTAN® Induced Vortex Grit Chamber

Grit is a source of problems in wastewater treatment facilities, which causes wear and tear on mechanical equipment, decreases the effective treatment volume in basins, causes pipe blockages and generally increases operating costs.
Grundfos Booster Module Systems

Grundfos Booster Module Systems

The BMS range is a new range of booster modules for reverse osmosis and ultra-filtration applications that improve efficiency with a directly coupled pump powered by a permanent magnet motor and VFD.

Microfiltration Performance That Maintains Wine Quality

Microfiltration Performance That Maintains Wine Quality

Liqui-Flux - Modules are available in a wide variety of sizes and materials to meet various needs in beverage clarification.

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
Arkal Super Galaxy Self-Cleaning Disc Filter

Arkal Super Galaxy Self-Cleaning Disc Filter

The Arkal Super Galaxy is a high-flow rate, self-cleaning, automatic disc filter. It is practical for water and wastewater treatment plants, central water systems for irrigation, large cooling tower power plants, ballast water, and saltwater, as it handles desalination. In addition, it controls algae and reduces hydraulic filtration degrees to less than 20 microns. Its vertical and horizontal installation options accommodate all space issues.

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DESALINATION PODCASTS

The Future Of Water: Reuse, Energy-Efficient Technologies On The Horizon

The Future Of Water: Reuse, Energy-Efficient Technologies On The Horizon

The U.S. should be paying attention to innovation happening in the water space worldwide, says Ryan Spanton of WesTech, in an interview with Water Online Radio.

Energy-Saving Desalination Technology

Energy-Saving Desalination Technology

As water resources dwindle, more and more focus turns to desalination technologies. In this interview with Water Online Radio, Harland Pond and Thomas Morrison of Grundfos talk about the company’s commitment to innovation and their quest to solve the world’s water problems.

Closed Circuit Desalination Simplifies Reverse Osmosis To Drive Down Energy Costs

Closed Circuit Desalination Simplifies Reverse Osmosis To Drive Down Energy Costs

As industry, agriculture and residential consumers compete for available freshwater sources, desalination continues to evolve as a viable process for increasing the available water pool. Industrial water is perhaps most critical as it accounts for as much as sixty percent of the freshwater being withdrawn in the United States today. Rising wastewater disposal costs, sustainability initiatives, and higher water efficiency standards are all fueling interest from industry in onsite brackish water reuse. However, municipal interest in water-stressed areas of the world is also on the rise.

Low-Cost Desalination — The Promise Of Forward Osmosis

Low-Cost Desalination — The Promise Of Forward Osmosis

Utilizing low-pressure, low-energy membrane technology, Oasys Water is setting out to change the way people think about desalination. Lisa Marchewka, VP of strategy and marketing for Oasys, explains how forward osmosis is more energy- and cost-efficient than competing technologies.

The World Of Desalination, Opened

The World Of Desalination, Opened

Avshalom Felber, president and CEO of IDE Technologies, talks to Water Online Radio about the advancement of desalination technologies worldwide, the applications for both municipal and industrial markets, and how to overcome the obstacles to widespread adoption.

Solving Water Scarcity

Solving Water Scarcity

Rob Renner, executive director of the Water Research Foundation, describes how utilities are taking a holistic approach to managing their communities’ water supply including water reuse, desalination, brackish desalination and other sources of water supply

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DESALINATION VIDEOS

Smartrack Microfiltration and Ultrafiltration Water Treatment System: Video

Smartrack Microfiltration and Ultrafiltration Water Treatment System: Video

Degremont's Smartrack Microfiltration and Ultrafiltration Water Treatment System is a universal rack with interchangeable MF/UF membranes. It's capable of handling the 4 principal module supplier brands found on the market -- ASAHI, DOW, GE, TORAY -- and inter-piping to allow switching the filtrate/concentrate exits.

High Efficiency Water Treatment in Industrial Reverse Osmosis

High Efficiency Water Treatment in Industrial Reverse Osmosis

Industry accounts for nearly 60 percent of fresh water withdrawals in the developed world, putting tremendous stress on water resources which will only increase with growth.

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DESALINATION SUPPLIERS

  • Amiad Water Systems
    Amiad Water Systems Leading supplier of automatic, self-cleaning filters, valves and accessories for municipal and industrial applications|Cost effective pre-filtration solution for membrane protection including surface water applications for RO, UV, UF and effluent water|Provide filtration degrees from 3 - 3500 microns and service any flow rate needed
  • Aquatech International Corporation
    Aquatech International Corporation For over 2 decades, Aquatech has provided industry worldwide with proven water and wastewater treatment systems|We strive to enable our customers to maximize efficiency by concentrating on their core businesses while we provide the leadership and expertise necessary in water treatment|Our mission is to utilize innovation and performance excellence to drive toward the ultimate goal--a lower overall life cycle cost of treatment
  • 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 Technologies
    Veolia Water Technologies

    Veolia Water 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 Universal Type S and SL Underdrain|Leopold IMS Cap|Leopold DAF - Dissolved Air Flotation|Leopold Clari-Trac (CT2) Submerged Sludge Collector|Leopold Clari-Vac Floating Sludge Collector|Leopold Engineered Filter Media Products|Leopold Instruments And Controls| Leopold Ultrafiltration Membrane Systems

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.