英语翻译摘要：在我国,随着经济飞速发展,人民生活水平的提高,对生态环境的要求日益提高,要求越来越多的污水处理后达标排放.

Abstract: In our country, along with the economical rapid development,the lives of the people level enhancement, enhances day by day to theecological environment request, after the request more and more manysewage treatment reaches the sign to discharge. In national and evenin the world scope, is constructing the dirty water works which andawaits construction also day by day to increase. In recent years, thelarge-scale sewage treatment plant construction quantity relativelyreduced, but middle and small scale dirt water works then were moreand more many. How does well, the small sewage treatment plant,specially the small dirt water works, are in recent years many expertsand the engineers and technicians compare the matter of concern.