ABR-MABR耦合工艺处理畜禽养殖废水的同步启动

发布时间：2018-01-06 15:18

本文关键词：ABR-MABR耦合工艺处理畜禽养殖废水的同步启动?　出处：《环境科学研究》2017年02期 　论文类型：期刊论文

【摘要】：为评价采用ABR-MABR(厌氧折流板反应器-膜曝气生物膜反应器)耦合工艺处理畜禽养殖废水的可行性,采用模拟畜禽养殖废水,通过在ABR的厌氧格室接种厌氧颗粒污泥和MABR的好氧格室接种活性污泥,逐步升高进水负荷进行反应器的同步启动,并通过PCR-DGGE技术研究了反应器中微生物群落结构.结果表明:48 d后反应器OLR(有机负荷,以CODCr计)达到5.0kg/(m3·d),此时,耦合反应器对CODCr、NH4+-N的去除率分别可达89%、60%,反应器成功启动;成功启动之后反应器中厌氧颗粒污泥的浓度在14.0~35.0 g/L之间,直径由1.18~1.58 mm增至1.62~2.37 mm.ABR-MABR中的污泥主要由杆状菌和少量丝状菌、球状菌以及胞外聚合物组成;反应器中微生物群落结构丰富,厌氧格室中存在优势的具有产氢、产甲烷功能菌群或反硝化功能的菌群,曝气格室中存在硝化细菌〔uncultured Nitrospira sp.、uncultured Nitrospira sp.(Nitrospirae)〕与反硝化细菌(Thauera sp.),同时也发现了与厌氧消化产甲烷相关的菌群.研究显示,采用接种厌氧颗粒污泥与逐步升高进水负荷的方式可以快速实现ABR-MABR的同步启动.
[Abstract]:In order to evaluate the feasibility of treating livestock and poultry wastewater by ABR-MABR (anaerobic baffle-membrane aeration biofilm reactor) coupling process, simulated livestock and poultry wastewater was used. By inoculating the anaerobic granular sludge in the anaerobic compartment of ABR and the activated sludge in the aerobic compartment of MABR, the reactor was started simultaneously by increasing the influent load step by step. The microbial community structure in the reactor was studied by PCR-DGGE technique. In terms of CODCr, the removal rate of CODCrn NH _ 4-N in the coupled reactor was up to 8.90 kg 路m ~ 3 路d ~ (-1), respectively, and the reactor was successfully started. After successful start-up, the concentration of anaerobic granular sludge in the reactor was between 14.0g / L and 35.0 g / L. The sludge in diameter from 1.18 ~ 1.58 mm to 1.62 ~ 2.37 mm.ABR-MABR was mainly composed of rod bacteria, a small amount of filamentous bacteria, globular bacteria and extracellular polymers. The structure of microbial community in the reactor is rich, and there is a dominant microbial community with the function of hydrogen production, methanogenesis or denitrification in the anaerobic compartment. Nitrified Nitrospira sp. was found in aeration compartment. Uncultured Nitrospira sp. Nitrospiraean) and denitrifying bacteria Thauera sp.). At the same time, the microflora related to anaerobic digestion and methane production was also found. The results showed that the simultaneous start-up of ABR-MABR could be achieved quickly by inoculating anaerobic granular sludge and increasing the influent load step by step.
【作者单位】：北京林业大学环境科学与工程学院北京市污染水体源控制技术重点实验室;
【基金】：国家水体污染控制与治理科技重大专项(2013ZX07202-010,2012ZX07105-002-03)
【分类号】：X713
【正文快照】： 畜禽养殖业是关系到我国国计民生的重要产业,但其所带来的环境污染问题也日益突出.研究[1-4]表明,畜禽养殖污染已成为继工业污染、生活污染之后的第三大污染源.根据全国污染普查动态数据,畜禽养殖业污染已经成为我国农业面源污染之首,2010年我国畜禽养殖业所排放的CODCr、TN和

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