复合式厌氧反应器预处理低温城市合流制污水中试  

Pilot-scale Test of Anaerobic Hybrid Reactor for Pretreatment of Low-temperature Combined Municipal Sewage

作　　者：杨健[1] 居志华[1] 吴敏[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《中国给水排水》2007年第5期58-61,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2003AA601020)

摘　　要：采用有效容积为18．55m^3的复合式厌氧反应器（AHR）处理低温、低浓度城市合流制污水，中试结果表明，在水温为9．5～12℃、水力停留时间为3．9h的条件下，对SS和COD的去除率分别达到了84．5％和36．13％；经处理后溶解性COD占总COD的比例由进水的49．69％提高到出水的73．08％，可生化性得到了明显改善；在COD／SO4^2-值为1．60即SO4^2-充足的情况下，硫酸盐还原菌（SRB）较产甲烷菌（MPB）占优势，对SO4^2-的去除率高达73．26％。可见，采用AHR预处理低温城市合流制污水是可行的。Anaerobic hybrid reactor （AHR） with an effective volume of 18.55 m^3 was used to treat low-strength and low-temperature combined municipal sewage. The pilot-scale experiment results show that the removal rates of SS and COD attain 84.5% and 36.13% respectively when the hydraulic retention time（HRT） is 3.9 hours and the temperature is between 9.5 ℃ and 12 ℃. The proportion of SCOD in total COD increases from 49.69% in the influent to 73.08% in the effluent, and the biodegradability is improved. When the ratio of COD/SO4^2- is 1.60 which means that SO4^2- is abundant, sulfatereducing bacteria （SRB） are more predominant than rate of SO4^2- attains 73.26%. Therefore, it can be low-temperature combined municipal sewage. methane-producing bacteria （MPB） and the removal concluded that AHR is suitable for pretreatment of low-temperature combined municipal sewage.

关 键 词：复合式厌氧反应器 城市合流制污水 低温 

分 类 号：X703[环境科学与工程—环境工程]