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reject water Applications

  • Using evaporation to dewater Reverse Osmosis reject waste streams

    Reverse Osmosis (RO) technology has been used for years in various industries to separate dissolved solids from water by forcing the water through a semi-permeable membrane. RO is also commonly used to purify drinking water and desalinate seawater to yield potable water. The water and other molecules with lower molecular weight (specific weight of molecules allowed to pass through is dependent on the selected membrane) pass through the micropores in the membrane, yielding a purified water stream called the permeate. Larger molecules are retained by the membrane as well as a portion of the water that does not pass through the membrane. This concentrated stream is called the concentrate or RO reject.

    By ENCON Evaporators based in Hooksett, NEW HAMPSHIRE (USA).

  • Electrodeionization

    The Fractional Electrodeionization (FEDI) process is an advancement of conventional EDI. The patented dual voltage process allows for a higher flexibility and tolerance to inlet water conditions, thus lowering the risk of scaling, and improving the plant& design economics and reliability. By incorporating a two-stage separation process with different voltages the FEDI process is able to: Achieve a higher hardness tolerance by having distinctly different concentrate chambers with separate reject streams and thus reducing the potential of hardness scaling. Optimize power consumption by using higher electrical current only where required. Ensure the best water quality, continuously consistently by removing a major part of the deionization load in the hardness removal zone, while residual ionic impurities are effectively removed in the silica removal zone;, which stays in a polishing mode.

    By QUA Group LLC based in Canonsburg, PENNSYLVANIA (USA).

  • FEDI - Electrodeionization

    The Fractional Electrodeionization (FEDI) process is an advancement of conventional EDI. The patented dual voltage process allows for a higher flexibility and tolerance to inlet water conditions, thus lowering the risk of scaling, and improving the plant’s design economics and reliability. By incorporating a two-stage separation process with different voltages the FEDI® process is able to: Achieve a higher hardness tolerance by having distinctly different concentrate chambers with separate reject streams and thus reducing the potential of hardness scaling. Optimize power consumption by using higher electrical current only where required. Ensure the best water quality, continuously & consistently by removing a major part of the deionization load in the ‘hardness removal zone’, while residual ionic impurities are effectively removed in the ‘silica removal zone’, which stays in a polishing mode.

    By QUA Group LLC based in Canonsburg, PENNSYLVANIA (USA).

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    Ultraviolet disinfection systems for the de-chlorination industry

    The purpose of de-chlorination is the removal of free chlorine and combined chlorine compounds from potable water, as supplied by municipal water supplies. Chlorine will oxidize the surface of thin film composite polyamide membranes, causing the membrane to lose its ability to repel or reject salts. As a result, the membranes used in Reverse Osmosis (RO) or Electro-deionisation (EDI) systems will exhibit shorter lifetimes when exposed to chlorine in the water they are treating and membrane manufacturers will usually specify an upper limit to ensure a suitable life of the membrane. As a result, it is usual to use a method of dechlorination upstream of the RO or EDI system.

    By atg UV Technology based in Wigan, UNITED KINGDOM.

  • Wilsa ElectroWaveTM Conditioning - Non-chemical water conditioning, break emulsions, enhance recovery

    Hudson Industries (a licensed partner) is now offering the patented Wilsa ElectroWaveTM Conditioner (EWC) for non-chemical water conditioning that provides enhanced oil recovery up to 99.999% with the power to break difficult emulsions. The Wilsa Effect is targeted at polar fluids, such as water. The Wilsa EWC directly targets the surface and interfacial tension of water molecules which breaks emulsions and forces the water to reject foreign matter such as oil and suspended solids. Furthermore viscosity is greatly reduced which allows the now coalesced oil to exit the water column with less friction, thus Stokes Law is fundamentally enhanced and retention time is greatly reduced. Combine the Wilsa EWC with your existing separation equipment or pair it with Hudson Coalescing Separator for maximum oil recovery/ removal. Contact us today for more information about Hudson Separators and Wilsa ElectroWaveTM Conditioning.

    By Hudson Industries based in Vienna, OHIO (USA).

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    Ultraviolet disinfection systems for the horticulture industry

    With a number of units specially designed and developed for hydroponics and agriculture, atg UV’s treatment systems eliminate all types of water borne micro-organisms. atg UV Technology’s leading Ultraviolet treatment systems are used in a number of key areas to vastly reduce the risk of product rejection, crop failure and the spread of disease. With a number of “emerging” pathogens now displaying increased resistance to traditional methods of disinfection, Ultraviolet treatment is now the preferred and accepted method of disinfection over traditional chemical methods.

    By atg UV Technology based in Wigan, UNITED KINGDOM.

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