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Ozonization of Anaerobic Sludge Dewatering Centrate for Ammonia Removal

by K. Ramalingam, City Univ of New York, New York, United States,
V. Diyamandoglu, (M.ASCE), City Univ of New York, New York, United States,
J. Fillos, City Univ of New York, New York, United States,



Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment

Abstract:

Semi-batch ozonation experiments were carried out on settled anaerobic sludge dewatering centrate. The observed rate of ammonia decay at pH ranging between 7.5 and 8.5 was much slower than the rates observed in clean water solutions. NO₃-N formed was always below 10 percent of the NH₃-N lost and did not follow stoichiometric conversion. Apparent and true color decay was significant. Carbonate alkalinity species distribution and solution pH were not significantly affected at the experimental conditions investigated.

Subject Headings: Water treatment | Sludge | Dewatering | Ammonia | Ozonization | Chemical treatment | Anaerobic processes

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