一种生物膜载体用于城市污水处理的试验研究  

STUDY OF A BIOFILM CARRIER USED FOR MUNICIPAL WASTEWATER

作　　者：余锦玉[1] 张丽[1] 李和平 何小峰 周明达[1] 陈荣 

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]长沙市排水公司,湖南长沙410008 [3]上虞水处理发展有限责任公司,浙江上虞312300 [4]杭州沁欣环保科技有限公司,浙江杭州310053

出　　处：《水处理技术》2009年第11期96-98,103,共4页Technology of Water Treatment

摘　　要：对一种新型生物膜载体用于城市污水处理进行了试验研究。试验条件下,生物膜法挂膜过程一般需7～15d,生物膜厚在0.5～1.0mm左右,颜色呈淡黄色或淡褐色,膜内微生物主要有原生动物和后生动物,个数多,活性高。溶解氧、水力停留时间是主要的控制参数,当原水COD为100～200mg·L-1时,最优控制条件为DO质量浓度为3～4mg·L-1、HRT为14h。处理后出水COD、BOD5、SS的去除率分别达到75%、80%、85%以上。采用这种载体处理城市污水挂膜速度快、污泥量少、适应性好。The period ofbiomass cultivation was 7 - 15 d ,and the thickness ofbiofilm grew on the surface of the crushed stone globular aggregates was about 0.5 - 1.0 mm with light brown color. A large amount of microbes included prozoa and metazoa were detected by microscope; The dissolved oxygen（DO）and hydraulic detention time （HRT） are main running parameters for this experiment; COD removed rate was more than 75% ,and BOD5 removed rate was more than 80%, SS removed rate was more than 85% and the qualities of effluent water reached the standard of wastewater when DO was 3-4 mg·L^-1 and HRT was controlled at 14 h,respectively; The period ofbiomass cultivation was short, there were no excess sludge discharge during running and the applicability of membrane was powerful with the method of bio-membrane carrier used for municipal wastewater.

关 键 词：污水处理 生物膜 载体 

分 类 号：X703.1[环境科学与工程—环境工程]