secondary sewage treatment

基本解释

A secondary sewage treatment system used in smaller communities.
一个二级污水处理系统，在较小的社区。
Presently, active sludge method, or the establishment of secondary sewage treatment plants has been mainly adopted to treat urban sewage.
目前，对城市污水的处理主要采用活性污泥法即兴建城市二级污水处理厂。
An experiment was conducted to examine ozone disinfection of effluents from a municipal secondary sewage treatment plant. Affecting factors such as pH, contact time and ozone dose are studied.
介绍了臭氧在水中的化学特性和消毒的基本原理，通过试验研究了臭氧在城市污水深度处理消毒中的反应过程，认为臭氧在城市污水处理二级出水中的消毒是可行的。