城市污水处理技术发展回顾与展望

THE REVIEWING AND EXPECTATION OF THE DEVELOPMENT ON URBAN SEWAGE DISPOSE TECHNIQUE

随着水环境问题的提出,城市污水处理已经历了百年的发展历史.在回顾城市污水处理发展历史的基础上,从水质目标变化和2类城市污水处理基本方法——活性污泥法与生物膜法不断革新的历程的角度,分析了城市污水处理技术的发展过程,介绍了各种革新工艺的优缺点以及近年来出现的几种城市污水处理新技术.最后,展望了21世纪城市污水处理技术的发展趋势.

Along with the program of the water environmental pollute being raised,the urban sewage dispose technology has gone through 100 years of development.Based on the history of development urban sewage dispose technique,the thesis introduces the two main methods of urban sewage dispose:active-sewage and biologic-velum,the development procedure as well as development direction in view of water quality target and the applying of two main methods of urban sewage dispose——activated sludge system and biofilms system.Aiming at the disadvantage of traditional urban sewage dispose methods,the thesis introduces several new techniques.Finally,the development of urban sewage dispose technique in 21st century is forecasted.