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municipal wastewater recycling Applications

  • Automated solutions for the municipal sludge recycling using dredges

    LWT`s dredging systems can be used for municipal sludge recycling applications. Sludge is mixed with compost and used in nurseries, sod farms, and agricultural applications.

    By Liquid Waste Technology LLC - Mud Cat based in New Richmond, WISCONSIN (USA).

  • Membrane Filtration for Wastewater Treatment

    The essential challenges of today are to ensure cost effective treatment and recycling processes for water and wastewater. Membrane technology solves this task by being an innovative and trendsetting technology. Today membranes are successfully used for the treatment of municipal and industrial wastewater as well as for the production of drinking and process water from surface water. Membrane technology and membrane bioreactors (MBR) are especially important in arid zones for the recovery of clean water for reuse from wastewater. This enables the sustainable management of water resources ensuring availability and effective utilization.

    By MICRODYN-NADIR based in Wiesbaden, GERMANY.

  • Application for RO plants

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  • Filamentous Bulking Control with Hydrogen Peroxide

    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.

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

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