一体化装置在农村污水中的运行效果研究  

Study on Operation Effect of Integrated Reactor in Rural Sewage

作　　者：白王军[1,2] 倪军 BAI Wang-jun;NI Jun(Hohai University, Nanjing, Jiangsu 210098, China;Hohai University Design Institute CO., Ltd., Nanjing, Jiangsu 210098, China)

机构地区：[1]河海大学,江苏南京210098 [2]河海大学设计研究院有限公司,江苏南京210098

出　　处：《污染防治技术》2019年第6期20-24,共5页Pollution Control Technology

摘　　要：依据中国农村生活污水处理的技术要求及农村生活污水水质、水量特点,提出了一种新型的一体化装置。该装置在工艺上采用活性污泥法与厌氧/缺氧相结合,并运用一体化的设计理念,集好氧、缺氧、厌氧、沉淀于同一反应池。通过试验模拟农村低浓度的生活污水的运行,研究了运行效果的最佳条件。结果表明,当在适宜温度时,其最佳运行参数为运行周期=30 min、溶解氧DO=1 mg·L^-1、泥龄SRT=20 d时,对COD、NH3-N、TN、TP的去除率分别为73.3%、80%、52%、88.6%,出水的COD、NH3-N、TN、TP分别为40 mg·L^-1、4.0 mg·L^-1、12 mg·L^-1、0.4 mg·L^-1,其出水指标均优于《城镇污水处理厂污染物排放标准》(GB 18918-2002)的一级标准A标准。According to the technical requirements of rural sewage treatment in China and the characteristics of water quality and quantity of rural sewage,a new type of integrated reactor by intermittent aeration is proposed.The reactor adopts activated sludge process combined with anaerobic/anoxic,and uses the integrated design concept to set the aerobic,anoxic,anaerobic and sedimentation conditions in the same reaction pool.The best condition of running effect was studied by simulating the operation in rural low concentration sewage.The results showed that when the temperature is suitable,the optimal operation parameters of this process are:cycle time was 30 min,dissolved oxygen was 1 mg/L,sludge retention time was 20 d,and the removal rates of COD,NH3-N,TN,TP were 73.3%,80%,52%,88.6%respectively,the COD,NH3-N,TN,TP of the effluent from this process are 40 mg·L^-1,4.0 mg·L^-1,12 mg·L^-1,0.4 mg·L^-1,respectively and it can reach the first class of A standard of the“Integrated Wastewater Discharge Standards”(GB 18918-2002).

关 键 词：农村低浓度生活污水 一体化装置 低溶解氧 

分 类 号：X703[环境科学与工程—环境工程]