有效微生物应用于活性污泥系统中，分别进行了EM复壮、EM投加及EM絮凝性能的研究。研究表明:用糖蜜、蜂蜜及高浓度污水均能有效的复壮EM在活性污泥系统中投加EM液，可以提高系统的处理效率EM复活液具有一定的生物絮凝性能。

Researches of EM rejuvenation, EM addition as well as flocculation characteristics of EM are conducted in the activated sludge system.Results obtained show that (1)Effective EM rejuvenation is successful through the use of honey, molasses as well as high concentrated organic wastewater respectively;(2)EM addition to activated sludge system can improve the treatment efficiency of the system;(3)Rejuvenated EM solution exhibits biological flocculation characteristic.