一体化装置处理低浓度农村生活污水的中试研究  

Pilot Study on Integrated Reactor for Treatment of Low-concentration Rural Domestic Sewage

作　　者：贾晓竞[1] 毕东苏[2] 周雪飞[1] 张亚雷[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]上海应用技术学院化学与环境工程学院,上海200235

出　　处：《中国给水排水》2011年第19期6-9,共4页China Water & Wastewater

基　　金："十一五"科技支撑计划项目(2009BAC57B01);国际科技合作项目(2010DFA92050)

摘　　要：采用自主设计的综合了厌氧生物滤池与好氧接触氧化工艺特征的一体化装置进行处理低浓度农村生活污水的中试研究,考察了水力停留时间(HRT)和溶解氧(DO)对其净化效果的影响,以及装置的抗冲击负荷性能。综合考虑脱氮除磷效果以及能耗,确定该一体化装置的最佳运行工况为:HRT=7.5 h,DO=3 mg/L,在此条件下对COD、NH_4^+-N、TN和TP的去除率分别为69.39%、84.01%、71.01%、20.90%,相应的出水浓度均可满足《城镇污水处理厂污染物排放标准》(GB 18918—2002)的二级标准。该装置抗冲击负荷能力强、操作简便,在运行过程中基本无剩余污泥产生,且处理成本仅有0.22元/m^3,因此在农村生活污水的分散式处理领域具有很好的应用前景。The pilot study on the integrated reactor combining anaerobic biofiher and aerobic con- tact oxidation process for treatment of low-concentration rural domestic sewage was performed. Influences of hydraulic retention time （HRT） , dissolved oxygen （DO） on the treatment efficiency as well as the anti-shock loading performance of the reactor were investigated. Taking the removal effect of nitrogen and phosphorus and energy consumption into account, the optimal operation conditions are determined as follows ： HRT is 7.5 h, and DO is 3 mg/L. Under these conditions, the removal rates of COD, NH4^＋ - N, TN, TP are 69.39% , 84.01% , 71.01% and 20.90% respectively. The effluent quality meets the second class criteria specified in Discharge Standard of Pollutants Jbr Municipal Wastewater Treatment Plant （GB 18918 -2002）. The integrated reactor has good application prospect in decentralized treatment of rural domestic sewage due to its strong anti-shock loading capacity, less excess sludge production and operation cost of 0. 22 yuan/m^3.

关 键 词：农村生活污水 分散处理 一体化装置 脱氮除磷 

分 类 号：X703[环境科学与工程—环境工程]