biosolids Applications

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Enhanced Biosolids and Bio Sludge Dewatering with Wilsa EWC

by Hudson Industries     based in Vienna, OHIO (USA)

IMPROVED BIOSOLIDS/ BIO SLUDGE DEWATERING WITH WILSA® CONDITIONING The WILSA ElectroWave™ effect can be used to condition polar fluids to alter their physical properties, improving several chemical and physical processes. - Reducing surface tension to improve the ability of water to repel solids - break physical / chemical emulsions - Increasing the contact angle of water - improve coalescing of solid particulate toaccelerate phase separation - Lowering the viscosity of water - reduce friction of flocculated solids dropping through less viscous water - Lower viscosity, reduced surface tension and increased contact angle of water - improve aeration of wastewater Installation of WILSA® ElectroWave Conditioner upstream of a belt press at a wastewater treatment plant resulted in polymer usage dropping by >50% while achieving much dryer solids.

Hydrogen sulfide removal in sludge management

by Carus Corporation     based in Peru, ILLINOIS (USA)

In the treatment of sanitary sewage, bio-solids are separated from the liquid. These bio-solids are concentrated and dewatered using filter presses, centrifuges, or other devices. Hydrogen sulfide and mercaptans are released during the dewatering operation.  Carus permanganates react quickly and produce immediate results for hydrogen sulfide removal in order to provide a safe, odor free environment and minimize corrosion due to sulfides.

High-calcium lime slurry for water & wastewater treatment industry

by Sudbury Lime Ltd.     based in Copper Cliff,, ONTARIO (CANADA)

Our NSF certifications allows our product to be used for both the treatment of drinking water as well as the operation of sewage treatment and bio-solid management.

Wastewater treatment solution for the municipal industries

by Schwing Bioset, Inc.     based in Somerset, WISCONSIN (USA)

Visit any large wastewater treatment plant in the United States or Canada and chances are Schwing Bioset equipment, whether piston pumps or sliding frames, is handling the dewatered biosolids. As with our biosolids handling equipment, our selection of Class `A` processes afford Municipalities best-in-class options when it comes to reliability, safety, ease of operation, consistent results, and affordability.

Filamentous Bulking Control with Hydrogen Peroxide

by USP Technologies     based in Atlanta, GEORGIA (US) (USA)

Basis of Control with Hydrogen Peroxide Hydrogen peroxide may be used to correct a serious filamentous bulking situation or, preferably, to prevent one from occurring until adjustments can be made to remove the cause. When applied to the return activated sludge, hydrogen peroxide supplies dissolved oxygen which helps restore the microbial activity necessary for effective operation, while selectively oxidizing the filaments which retard settling. The effective dose of hydrogen peroxide is a function of time and concentration, and varies from plant to plant. To correct a serious bulking problem, immediate results may be obtained by adding 100 - 200 mg/L H2O2 to the biosolids recycle line. Once control of bulking is obtained, the dose may be reduced to 25 - 50 mg/L H2O2 to prevent re-occurrence. Practical Considerations Filamentous bulking of municipal activated sludge is not a normal occurrence, and suggests more fundamental problems may be at work (e.g., low dissolved oxygen, high sulfide input, heavy organic loading, nutrient imbalance, improper sludge age, or rapid changes in influent characteristics). Consequently, the use of chemicals such as hydrogen peroxide to control bulking should be pursued in concurrently with more fundamental corrective measures.

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