| 缺氧MBR-MMR处理海水养殖废水性能及膜污染特性 |
| 摘要点击 1168 全文点击 496 投稿时间：2019-10-10 修订日期：2019-12-18 |
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| 中文关键词 缺氧污泥 微藻 膜生物反应器 海水养殖废水 膜污染 |
| 英文关键词 anoxic sludge microalgae membrane bioreactor mariculture wastewater membrane fouling |
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| 中文摘要 |
| 采用普通小球藻（C.vulgaris）作为实验藻种，搭建缺氧MBR-微藻膜反应器（缺氧MBR-MMR）耦合系统处理海水养殖废水，前置缺氧MBR用于有机物、NO3--N和NO2--N的降解，释放的NH4+-N进入MMR用于微藻生长而得到去除，考察协同处理效能和微藻采收情况，探究膜污染行为.反应系统共运行91 d，对NO3--N和NH4+-N的去除率分别达到90.0%和88.0%以上，对PO43--P和TOC的平均去除率分别为49.4%和84.7%.普通小球藻在进行连续采收的情况下，能以平均浓度为9×107个·mL-1的生物量稳定运行，实现了较好的去除效能和资源化利用.通过红外光谱和三维荧光光谱分析，MMR内造成膜污染的主要物质是色氨酸类蛋白质和腐殖酸类物质，与缺氧MBR内膜组件相比污染较轻. |
| 英文摘要 |
| An anoxic membrane bioreactor-microalgae membrane reactor coupling system (anoxic MBR-MMR) was used to deal with mariculture wastewater. Pre-anoxic MBR was used for the degradation of organic matter, NO3--N and NO2--N, and the released NH4+-N entered MMR for microalgae growth and was removed. Meanwhile, the treatment efficiency and the microalgae recovery were studied, and the membrane fouling behavior was investigated. After running for 91 days, the removal rates of the system toward NO3--N and NH4+-N were stable at above 90.0% and 88.0%, respectively. Furthermore, the average removal rates of PO43--P and TOC were 49.4% and 84.7%, respectively. Under the condition that the microalgae were harvested continuously, the biomass can be stably operated at an average concentration of 9×107 cells·mL-1 and good removal efficiency and resource utilization could be achieved. Through infrared spectrum and three-dimensional fluorescence spectrum analysis, the main substances causing membrane fouling in MMR were tryptophan proteins and humic acids. The membrane fouling in MMR was lighter than that in anoxic MBR. |
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