文献类型：会议论文

英文题名：Performance of triple ditch: effects of duration and periodic operation programs

作者：Ma, L.M.[1]; Wang, H.W.[1]; Liu, Y.[1]; Jing, Z.G.[2]

机构：[1]E China Univ Sci & Technol, Resource & Environm Coll, Res Inst Environm Engn, Shanghai 200237, Peoples R China;[2]Shanghai Petrochem Complex, Wastewater Treatment Plant, Shanghai 200540, Peoples R China

会议论文集：2nd IWA International Conference on Sequencing Batch Reactor Technology

会议日期：JUL 10-12, 2000

会议地点：NARBONNE, FRANCE

语种：英文

外文关键词：activated sludge; ditch; model; program; wastewater

摘要：The periodic variation of operation states in triple ditch (BIO-DENITRO process) was investigated in a pilot-scale and a full-scale triple ditch treating raw wastewater containing 70% petrochemical wastewater and 30% domestic wastewater. Mathematical models describing the periodic variation of activated sludge concentrations in each ditch were proposed based on theoretical analysis and were verified in the pilot-scale and full-scale triple ditches respectively. The existence of optimal cycle time and time arrangement of periodic operation programs were demonstrated and discussed according to the mathematical models and the experimental results of the pilot-scale triple ditch operated in four different stages. Four rulers determining the duration and operation programs are suggested.