中文摘要：

低温对城市污水的生物处理有较大影响。比较认为，CASS工艺、膜生物反应器是较适合低温污水生物处理的工艺。利用低温微生物强化、通过预处理改善进水的水质、提供泥水充分混合的条件是可采用的提高处理效果的措施。

英文摘要：

The biological treatment of urban wastewater was not effective at low temperature. CASS process and MBR with utility of cold - adapted microorganism as enhancement can work better. Pre - treating the raw water, improving the mixture condition of the sludge and the wastewater were also the selective methods.