摘要
开展城市下水排放标准的研究对加速城市建设,促进城市下水系统的科学管理,更好地发挥城市下水系统的环境效益、经济效益和社会效益有着重要意义。
By simulated tests of activated sludge process with toxicant cadmium (Cd) in the laboratory, the results showed that to a certain concentration of Cd, biological treatment of waste water was gradually depressed as its concentrations increased. Cd residue in effluent incereased as its concentretion in influent gor high, and decreased as sustained time of sludge increased. Cd concentration in mixed liquid hadnot a tangible impact on sludge in second sedimentation tank. Based on the results, the author offered a proposal for reviewing the discharge standard of maximum permissible concentration of Cd in Shanghai sewerage system
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1989年第2期33-37,共5页
Environmental Science
