浸没式膜-生物反应器污泥组分对膜污染的影响  

Study on the impact of sludge components on membrane fouling in a sub-merged membrane bioreactor

作　　者：吴志超[1] 尹星[1] 王志伟[1] 王新华[1] 夏明芳[2] 陆继来[2] 张利民[2] 

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 [2]江苏省环境科学研究院江苏省环境工程重点实验室,南京210036

出　　处：《环境工程学报》2009年第1期93-97,共5页Chinese Journal of Environmental Engineering

摘　　要：研究基于中试规模的浸没式膜-生物反应器长期运行的基础上,通过改变操作条件和工艺参数系统考察污泥组分对膜污染的影响。试验结果表明,泥龄10 d时,混合液悬浮固体、胶体物质和溶解性物质对膜污染阻力的贡献分别为24.1%、36.1%和39.8%;泥龄20 d时,混合液悬浮固体、胶体物质和溶解性物质对膜污染阻力的贡献分别为43.9%、32%和24.1%;泥龄40 d时,混合液悬浮固体、胶体物质和溶解性物质对膜污染阻力的贡献分别为50.6%、27.3%和22.1%。随着泥龄的增加,胶体物质和溶解性物质所形成的阻力之和在总阻力中所占的比例逐渐下降,但仍为膜污染的重要因素。The impacts of sludge components on membrane fouling were studied by changing the operational conditions and parameters of a pilot-scale submerged membrane-bioreactor, which had been successfully operated for more than one year. The results showed that the contributions of suspended solid, colloids and solutes to the membrane fouling were 24.1%, 36.1%, 39.8% at SRT of 10 days, and 43.9%, 32%, 24.1% at SRT of 20 days, 50.6% , 27.3% and 22. 1% at SRT of 40 days, respectively. It was also found that the proportion of fouling resistance formed by colloids and solutes, which played an important role in membrane fouling, decreased with the increase in SRT.

关 键 词：浸没式膜-生物反应器 污泥组分 膜污染 

分 类 号：X703.1[环境科学与工程—环境工程]