Characterization and Modeling of Activated Sludge for Tannery Wastewater

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Abstract:

A comprehensive experimental evaluation of tannery wastewater was performed as a basis for the modeling of the activated-sludge process. Characterization studies involved, aside from conventional parameters, a detailed chemical oxygen demand (COD) fractionation for the identification of biodegradable and inert COD components. Respirometric analysis was carried out to assess significant rate constants associated with the stoichiometry and kinetics of activated sludge. Specific emphasis was placed on the evaluation of the hydrolysis mechanism for slowly biodegradable COD, apparently the rate-limiting step for organic carbon removal. Parallel experiments were run both on plain and chemically settled samples to investigate the effect of chemical settling on biological treatability. The fate and variation of primary process components affecting effluent quality with the sludge age were evaluated by means of model simulations using recent multicomponent modeling tools and generated experimental data.
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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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