secondary sewage treatment

基本解释

A secondary sewage treatment system used in smaller communities.
一個二級汙水処理系統，在較小的社區。
Presently, active sludge method, or the establishment of secondary sewage treatment plants has been mainly adopted to treat urban sewage.
目前，對城市汙水的処理主要採用活性汙泥法即興建城市二級汙水処理廠。
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.
介紹了臭氧在水中的化學特性和消毒的基本原理，通過試騐研究了臭氧在城市汙水深度処理消毒中的反應過程，認爲臭氧在城市汙水処理二級出水中的消毒是可行的。