A/O-MBR处理城市污水中试研究  

STUDY ON PILOT-SCALE A/O-MBR FOR MUNICIPAL WASTEWATER TREATMENT

作　　者：潘懿[1] 吴志超[1] 田陆梅[1] 王志伟[1] 

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海200092

出　　处：《水处理技术》2009年第1期100-103,共4页Technology of Water Treatment

摘　　要：将平板膜-生物反应器与A/O工艺相结合,在前期小试的基础上构建了A/O-MBR脱氮中试系统,考察系统稳定性和污水处理效果。结果表明,在MBR段污泥浓度18～21g·L-1、HRT4.4～4.8h、回流比300%的条件下,对COD、NH3-N、TN的平均去除率较高,分别为95.9%、98.2%、76.1%;同时研究发现MBR段DO浓度对系统TN的去除率有较大的影响,在DO浓度为0.4～0.5mg·L-1时系统TN的平均去除率较DO浓度为1.2mg·L-1以上时提高了12%。A pilot-scale of nitrogen removal system was constructed based on the combined theory of flat-sheet membrane bioreactor （MBR） and A/O process, and the conclusions of previous lab-scale experiments. The system stability and treatment efficiency of domestic wastewater were also explored in this paper. The results showed that： during the operation period, the average removal efficiency of COD, NH3-N and Total Nitrogen （TN） were 95.9% ,98.2% ,76.1%, respectively, under the condition of 18-21 g·L^-1 of MLSS in MBR, 4.4-4.8 h of HRT and 300% of return ratio. Meanwhile, the significant impact of dissolved oxygen （DO） in MBR on the TN removal efficiency was found in the experiment. The TN removal efficiency with 0.4-0.5 mg·L^-1 of DO in MBR was 12%, which is higher than that under the condition of 1.2 mg·L^-1 and up of DO.

关 键 词：A/O 膜-生物反应器 城市污水 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]