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water supply hydraulic Applications

  • Headworks Odor and Corrosion Control Using Hydrogen Peroxide

    Hydrogen Peroxide typically controls odors and corrosion at treatment plant headworks by direct oxidation of hydrogen sulfide (H2S) within the wastewater. In the direct oxidation mode, H2O2 is applied to the wastewater 5-30 minutes prior to the point where the odors are being released, generally as the wastewater line enters the plant boundary. The efficiency of hydrogen peroxide treatment depends upon the available reaction time, the level of iron in the wastewater (reaction catalyst), wastewater pH and temperature, and the initial and target levels of H2S odor. Under optimal conditions, effective dose ratios are 1.2 - 1.5 parts H2O2 per part dissolved sulfide, and can be reliably estimated through beaker tests. H2O2 + H2S → S0 + 2H2O Frequently, control of odors through the primary clarifiers is wanted. In such case, the mechanism of control is both direct oxidation of H2S (as it rises from the solids blanket), and prevention of odor generation (by supplying dissolved oxygen). Control is typically achieved with a booster dose of 1-2 mg/L H2O2 added to the clarifier influent. Higher doses or alternate modes of addition may be required in cases where: 1) hydraulic retention times are > 2-3 hours; 2) solids blanket depths are > 1-2 feet; 3) soluble BOD levels are > 200-300 mg/L; or 4) waste activated sludge is co-settled with the primary solids. 2H2O2 → O2 + 2H2O

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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    Aeration and mixing technologies for oil and gas wastewater treatment

    As more hydraulic fracturing wells come into operation, the stress on surface water and groundwater supply increases. The expanding volume of wastewater created needs to be captured, disposed of, or recycled in an environmentally sustainable manner so the EPA continues to increase regulations.  We will work with you to create a comprehensive solution to treat your wastewater, meet increasingly strict governmental regulations, and support long term water life cycle management.

    By Aeration Industries International (AII) based in Chaska, MINNESOTA (USA).

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    Ultraviolet Disinfection for Oil & Gas Applications

    The process of disinfecting water with UV light is a proven technology for drinking and process water in many industries, however the high standards required by the offshore industry commanded the disinfection systems to be engineered way beyond the normal specification of many manufacturers` As the market leader for offshore UV systems, atg UV technology UV systems are used in a number of key areas in the offshore industry:- atg UV has provided UV systems to treat drinking water, waste water, hydraulic stimulation fluids (well injection and unconventional gas fracking) and SRB reduction for pipeline hydrotesting and corrosian protection. These systems are often supplied as skid mounted duty/standby packages, or containerised solutions and are designed to individual client specifications. Clients include: Shell, BP, Total, Statoil, AKER, British Gas, Veolia, Halliburton, Baker Hughes, BJ Services, ODE, Ormandy, SLP and Petrobrass.

    By atg UV Technology based in Wigan, UNITED KINGDOM.

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