| 引用本文: | 高大文,安瑞,陶彧,付源,任南琪.有机负荷对缺氧-好氧MBR系统的影响[J].哈尔滨工业大学学报,2010,42(6):886.DOI:10.11918/j.issn.0367-6234.2010.06.011 |
| GAO Da-wen,AN Rui,TAO Yu,FU Yuan,REN Nan-qi.Impact of organic loading on anoxic tank-aerobic MBR system[J].Journal of Harbin Institute of Technology,2010,42(6):886.DOI:10.11918/j.issn.0367-6234.2010.06.011 |
|
| 摘要: |
| 为了考察缺氧-好氧MBR系统深度处理生活污水的效能,以实际生活污水为处理对象,研究不同有机负荷(分别为315.8、407.5、507.7g·m-3·d-1,以COD计)对缺氧-好氧MBR系统去除有机污染物和脱氮能力的影响,并借助聚合酶链反应-变性梯度凝胶电泳(PCR-DGGE)和16SrDNA等分子生物学方法研究系统内微生物种群结构的变化.研究结果表明,有机负荷的提高使整个系统对COD的去除率从65.9%提高到85.95%,总氮去除率从18.5%提高到69.5%;但是有机负荷对氨氮去除的影响不大.缺氧-好氧MBR系统在实现低有机碳源下总氮的去除和污泥减量化方面具有一定优势.此外,进水有机负荷对系统内微生物种群结构有较大影响,在中等有机负荷(400g·m-3·d-1)下MBR的Shannon指数达到最大值(0.95),此时脱氮菌成为优势菌种,系统运行稳定且效能最高. |
| 关键词: MBR 有机负荷 脱氮 污泥减量化 微生物种群结构 |
| DOI：10.11918/j.issn.0367-6234.2010.06.011 |
| 分类号:X703 |
| 基金项目:高等学校全国优秀博士学位论文作者专项基金(200544);黑龙江省杰出青年基金(JC200909);国家自然科学基金重点项目(50638020) |
|
| Impact of organic loading on anoxic tank-aerobic MBR system |
|
GAO Da-wen1, AN Rui1,2, TAO Yu1, FU Yuan1, REN Nan-qi1
|
|
1.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China;2.Shenzhen Water (Group) Co. ,Ltd,Shenzhen 518000
|
| Abstract: |
| To investigate the wastewater treatment efficiency of an anoxic tank-aerobic MBR system,COD,ammonia and total nitrogen (TN) removal rate were measured at different organic loadings (OL) of raw sewage (in COD,315. 8,407. 5 and 507. 7 g·m-3·d-1). PCR-DGGE and 16S rDNA were used to detect microbial community structures in the system. Results show that increasing OL can enhance the removal rate of COD from 65. 9% to 85. 95% and that of TN from 18. 5% to 69. 5% ,but it has little impact on ammonia removal. The system has advantages on both low-organic-carbon-dependant TN removal and excess sludge control. Changes of OL obviously influence system’s microbial community structures. The system is robust and highly efficient under moderate OL conditions,with the highest Shannon diversity index (0. 95) of all the OL conditions. |
| Key words: MBR organic loading nitrogen removal excess sludge control microbial community structure |
