DESALINATION CASE STUDIES AND WHITE PAPERS

Long-Term Performance And Boron Rejection Of LG SWRO Membranes In Malta Desalination Plants
Long-Term Performance And Boron Rejection Of LG SWRO Membranes In Malta Desalination Plants

Malta is an archipelago of three islands situated in the Mediterranean Sea, around fifty miles south of Sicily. There are no rivers of any significance on the islands, and the sparse annual rainfall is only about 500 mm. In order to bridge the gap between supply and demand, Malta has long ago started desalination of seawater. The technologies were initially based on evaporation. In 1981 the Government decided to invest in RO desalination capacity.

Overcoming Difficult Conditions, Salty Groundwater And Changes In Feedwater Quality
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.

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DESALINATION PRODUCTS

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.

<B>Packaged Water Treatment Products</B> Packaged Water Treatment Products
Based upon all of the necessary components such as filtration, demineralization, reverse osmosis, and electrodeionization systems, WATERTRAK™ delivers the most cost-effective and timely solution for your pure water treatment needs today
Reverse Osmosis Reverse Osmosis
Reverse osmosis, electrodeionization, nanofiltration, and ultrafiltration are several of the membrane systems that Aquatech International Corporation offers.
Pentair X-Flow Pentair X-Flow

The Pentair X-Flow UF membrane system provides a simple solution producing water that meets the highest standards for turbidity and micro biology

EM-Pure™ Membrane Systems EM-Pure™ Membrane Systems

As a preferred GE partner, we offer the full line of GE Membrane Systems, products and services which include complete systems, membrane elements, controls, filters, high-pressure pumps and maintenance plans. The GE brand is synonymous with quality, engineering and craftsmanship! With Filtronics, you will get quick delivery, fast installation, responsiveness to your concerns, ease of use and extreme reliability.

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.

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DESALINATION PODCASTS

How Far Can RDI Desalination Go? How Far Can RDI Desalination Go?

Radial deionization is a desalination technique that utilizes two oppositely charged supercapacitors to attract ions out of a water stream. Atlantis Technologies utilizes the process in its line of RDI Desalination Systems and sees the opportunity to capitalize on its innovative capabilities.

A Better Understanding Of Desalination A Better Understanding Of Desalination

As an expert on utility resiliency for a changing climate, John Batten, Global Water & Cities Director for ARCADIS, discusses the prospects of desalination for bolstering U.S. water supplies.

Radial Deionization—A 'Game Changer' For Water Recovery Radial Deionization—A 'Game Changer' For Water Recovery

Atlantis Technologies has developed a new desalination device, and it might just be a game changer.

What Is Closed Circuit Desalination? What Is Closed Circuit Desalination?

Closed circuit desalination (CCD) is the trade name for a new change in the reverse osmosis (RO) process, explains Rick Stover, Executive Vice President of Desalitech, in an interview with Water Online Radio.

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.

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DESALINATION VIDEOS

Resourcing the World Resourcing the World

The world has to rethink its relationship with resources and come up with new social and economic growth models that are more efficient, better balanced and more sustainable.
 

Drought Forum Webinar: The Growing Demand For Re-Used And Brackish Water Drought Forum Webinar: The Growing Demand For Re-Used And Brackish Water

The Western Governors' Drought Forum webinar “Once Marginal, Now Crucial: The Growing Demand for Re-used, Produced, and Brackish Water” explores the technological and regulatory obstacles to utilizing re-used, produced, and brackish water.

RWL Water & Emefcy Announce Merger To Form Fluence Corporation, Ltd. RWL Water & Emefcy Announce Merger To Form Fluence Corporation, Ltd.

Founded in 2017, under the consolidation of global water industry leaders Emefcy and RWL Water, Fluence was established with a vision to become the key global provider in decentralized water and wastewater solutions.

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DESALINATION SUPPLIERS

  • Amiad Water Systems
    Amiad Water Systems

    Amiad Water Systems is a world leader in water filtration equipment and treatment solutions.

    For over 50 years Amiad has been committed to developing a comprehensive line of robust water filtration equipment and integrated treatment packages for water applications in the industrial, municipal (potable and wastewater), oil and gas, commercial HVAC, ballast water, agriculture, irrigation, and aquaculture markets. Our filters are in use in over 70 countries around the world. Every Amiad system is built for efficiency, effectiveness and reliability and is backed by our commitment to excellence and dedication to customer service.

  • 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 LLC
    QUA Group LLC

    QUA® is a leading-edge developer and manufacturer of advanced membrane products, which includes fractional electrodeionization (FEDI) and hollow fiber ultrafiltration module (Q-SEP). These are engineered with innovative technologies, which are used to treat challenging waters. QUA is leveraging its deep roots in R&D, the expertise of staff that is highly experienced in water treatment technologies, and its significant financial resources to become a global technology leader in the development of products for water and wastewater treatment applications.

  • De Nora
    De Nora

    De Nora Water Technologies 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.