原生动物在活性污泥中的作用

原生动物在活性污泥中的作用原生动物在活性污泥中的作用3陈声贵许木启33(中国科学院动物研究所,北京100080)杨向平甘一萍翟家骥刘伟岩邵永怡(北京城市排水公司,北京100022)RoleofProtozoainActivated-Sludge.ChenShenggui,XuMuqi(InstituteofZoology,ChineseAcademyofSciences,Bei2jing100080),YangXiangping,GanYiping,ZhaiJiaji,LiuWeiyan,ShaoYongyi(BeijingMunicipalDrainageCorpora2tion,Beijing100022).ChineseJournalofEcology,2002,21(3):47～51.Protozoainactivatedsludgecanimprovethesewagetreatment,reducethemassofsludgeandindicatethequalityofefflu2ent.Thefollowingeffectsarereviewed:①extretionofgrowthfactorsandextracellularpolymers;②preyingonbacteria.Preyingchangesthestructureofbacteriacommunity,stimulatesthegrowthofbacteriainflocsandbenefitsthesedimentoftheactivatedsludge.Protozoagrazingonfecalbacteriaandinthesuspendedliquorisessentialfortheproductionofgoodqualityeffluent.Keywords:protozoa,activatedsludge,grazing,wastewatertreatment.关键词:原生动物,活性污泥,捕食,污水处理中图分类号:Q958.1文献标识码:A文章编号:1000-4890(2002)02-0047-053国家自然科学基金项目(No.30170159)、国家自然科学基金项目(No.39970138)、国家自然科学基金重点项目(No.39730070)和中国科学院院长