摘要
清华大学环境节能楼负压源分离排水系统中褐水的COD在2 000 mg/L左右,N、P的含量比常规生活污水的高出20倍以上,采用常规工艺处理时难以获得很好的去除效果。采用厌氧/缺氧/好氧MBR组合工艺进行处理,结果表明,系统对COD的平均去除率为93.09%,对TN的平均去除率为94.85%,对NH3-N的去除率>98.23%,在进水C/N=4.30的条件下出水TN可降至13.8 mg/L。投加KA l(SO4)2进行化学除磷试验,当pH值约为6、A l/TP(物质的量之比)为2、反应时间为5.5 h时对TP的去除效果最好,出水TP为0.9 mg/L。膜滤出水SS为1 mg/L,系统的脱色率为90%。
In the vacuum source-separated drainage system of environmental and energy efficient building in Tsinghua University, COD of brown water is about 2000mg/L, and the total nitrogen （TN） and phosphorus （TP） concentrations of the brown water are 20 times higher than those of traditional domestic sewage. The conventional treatment processes can not achieve higher removal efficiency, so the combined anaerobic/anoxic/aerobic membrane bioreactor was used to treat the brown water. The average removal rates of COD, TN and NH3 - N are 93.09% , 94.85% and 98.23% respectively. When the influent C/N is 4.30, the effluent TN can be decreased to 13.8 mg/L. In the experiment of removing phosphorus by KAI（SO4）2, when pH is 6, Al/TP molar ratio is 2, and reaction time is 5.5h, the effluent TP is decreased to 0.9 mg/L. In addition, SS in MBR filtrate is 1 mg/L, and the color removal rate is 90%.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第17期20-22,27,共4页
China Water & Wastewater
基金
国家科技支撑计划项目(2007BAK12B11)
关键词
源分离排水系统
褐水
厌氧/缺氧/好氧膜生物反应器
source-separated drainage system
brown water
anaerobic/anoxic/aerobic membrane bioreactorr
