Accession Number : ADP006831

Title :   Removal of Nitrogen and Refractory organic Compounds in Municipal Landfill Leachate by Sequencing Batch Reactor Activated Sludge Processes,

Corporate Author : TOKYO UNIV OF AGRICULTURE AND TECHNOLOGY (JAPAN)

Personal Author(s) : Hosomi, M. ; Matsusige, K. ; Inamori, Y. ; Sudo, R.

Report Date : APR 1992

Pagination or Media Count : 18

Abstract : Laboratory-scale experiments on aerobic/anaerobic operations of the sequencing batch reactor (SBR) activated sludge processes, in which methanol was added as a hydrogen donor, were conducted to remove nitrogen and refractory organic compounds in municipal landfill leachate. The NH 4-N concentrations in leachate from landfill ranged from 100 to 200 mg/l. A high concentration of nonbiodegradable organic compound (100 to 150 mg/l as chemical oxygen demand (COD)) was observed in the leachate. Ninety-five percent or more nitrogen removal was achieved in the operation with an optimum length of aerobic and anoxic/anaerobic period for the nitrification-denitrification process. Fifty percent or more removal of refractory organic compounds was achieved by the SBR activated sludge process with the addition of ozonation pretreatment.

Descriptors :   *ACTIVATED SLUDGE PROCESS, *AEROBIC PROCESSES, *ANAEROBIC PROCESSES, CHEMICALS, HYDROGEN, LANDFILLS, METHANOLS, NITRIFICATION, NITROGEN, ORGANIC COMPOUNDS, OXYGEN, OZONATION, REMOVAL, SCALE, SLUDGE, CHEMICAL ANALYSIS, REFRACTORY MATERIALS.

Subject Categories : Organic Chemistry
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE