气升循环动态膜生物反应器-人工湿地复合系统处理生活污水的研究
首发时间:2008-09-22
摘要:利用陶瓷膜生物反应器单元和垂直流人工湿地单元组成一个复合系统来处理生活 污水。研究了系统和各单元对COD,NH4+-N,以及浊度的去除效果,系统对它们的总去除率分别为90.3%,96.2%和93.3%;5h即可在陶瓷膜表面形成自生动态膜,一定程度上稳定了出水的浊度。研究了膜易污染情况下膜通量的衰减,用清水1h,5h和0.1%NaOH溶液5h反冲洗膜,使膜通量由原来的45.1%,36.5%和20.1%分别恢复到了56.2%,67.3%和84.4%。
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Studies on the integrated system of Air-left circulating dynamic membrane bioreactor-Constructed wetland for the treatment of domestic wastewater.
Abstract:The ceramic membrane bioreator unit was combined with the vertical constructed wetland as a inregrated system to cope with domestic wastewater.The average removal efficiency of COD, NH4+-N,and Turbidity from the system and every single unit were studied, 90.3%,96.2%and93.3% respectly ,were the total average removal rate that made by the system;Self-forming dynamic membrane formed on the surface of the ceramic membrane only 5h after it’s first being used ,which maintained the turbidity of effluent to some extent.The attenuation of membrane flux when membrane easily contaminated were also discussed, and membrane flux were made from 45.1%,36.5%and20.1% to56.2%,67.3%and84.4% alternatively by different means and durations of cleaning,which were 1h with clean water,5h with clean water,and 5h with 0.1%NaOH。
Keywords: Air-left circulation dynamic membrane bioreactor constructed wetland membrane contamination
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No.2421531909912220****
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