采用EGSB-MBR组合系统处理生活污水  

Study on Domestic Wastewater Treatment by EGSB-MBR Combined System

作　　者：杨云军[1] 马莉[1] 李秀芬[1] 华兆哲[1] 陈坚[1] 张国平 王洪春 

机构地区：[1]江南大学工业生物技术教育部重点实验室 [2]江苏省环境工程技术研究中心,江苏宜兴214205

出　　处：《无锡轻工大学学报（食品与生物技术）》2005年第1期29-33,共5页Journal of Wuxi University of Light Industry

基　　金：科技部国际科技合作重点计划项目(编号: 2002DF000006);江苏省环境工程技术研究中心项目(JSERC0205)资助课题.

摘　　要：采用有效容积为150 L的膨胀颗粒污泥床(EGSB)反应器和 400 L的一体式膜生物反应器(MBR)新型组合系统处理生活污水,首先通过模拟废水实验确定反应器的水力停留时间(HRT),在此基础上进行组合系统处理生活污水的中试研究,考察EGSB MBR组合系统处理生活污水的技术可行性. 结果表明,在温度 30 ℃、EGSB 水力停留时间为 0 8 h、混合液悬浮固体量(MLSS)在28 5 g/L,MBR的HRT为 2 h、MLSS 为 10 g/L、DO为 2 mg/L时,系统运行稳定,COD和NH3—N去除率分别为95%以上和90%以上,色度去除率大于 90%,悬浮固体(SS)和浊度几乎可以完全去除,出水水质优于城市污水再生利用———城市杂用水水质标准,同时组合系统污泥产量低,可大大减少污泥处理处置费用,是一项高效、节能的新型城市污水资源化技术.A new type of combined system, with a working volume 150 L of expanded granular sludge bed (EGSB) reactor and 400 L of submerged membrane bioreactor (MBR), was used to treat domestic wastewater. The HRT of two reactors was firstly determined by treating simulant wastewater. The pilot-scaled study on the domestic wastewater treatment with EGSB-MBR combined system was then carried out to validate the feasibility of the new technology. The results showed that the total removal rates of COD and NH_3—N surpassed to 95 % and 90% respectively under the following conditions: the temperature of 30 ℃, HRT of 0.75 h, MLSS of 28.5 g/L in EGSB, HRT of 2 h, MLSS of 10 g/L and DO of 2 mg/L in MBR. The removal rate of chroma exceeded 90%. SS and turbidity were almost completely removed in EGSB-MBR system. The effluent was of excellent quality and reached the national standard for urban recycling water. The sludge production rate in the combined system was very low, so the sludge treatment cost would be greatly reduced. The EGSB-MBR combined system is a new type of technology, with which the domestic wastewater can be treated with high efficiency and low cost.

关 键 词：EGSB反应器 膜生物反应器 生活污水 

分 类 号：X703.1[环境科学与工程—环境工程]