ABR处理模拟畜禽养殖废水中有机物的快速启动与运行优化研究

发布时间：2018-05-15 16:26

  本文选题：厌氧折流板反应器 + 模拟畜禽养殖废水　； 参考：《环境工程学报》2017年07期

【摘要】：研究了厌氧折流板反应器(ABR)处理模拟畜禽养殖废水的快速启动过程与运行条件的优化。通过接种厌氧颗粒污泥、固定停留时间、逐步升高进水负荷的方式进行快速启动;64 d后,ABR的有机负荷(OLR)达到5.7 kg COD·(m3·d)~(-1),COD去除率为98%,表明快速启动成功。ABR各格室中成熟颗粒污泥的浓度在7.14~26.17 g·L~(-1)之间,中位直径从开始启动时的0.89 mm增长到1.18~1.58 mm,平均增长速度为7.28×10-3mm·d~(-1)。通过16Sr DNA、PCR-DGGE技术对ABR的成熟颗粒污泥的微生物群落进行分析,发现了序列最相似的产酸菌包括:Raoultella ornithinolytica、Uncultured Clostridiales bacterium、Staphylococcus sp.、Propionibacterium sp.、Uncultured Acidobacteria bacterium、Brevibacterium casei等,产氢菌Uncultured Clostridium sp.等,以及产甲烷菌Uncultured Firmicutes bacterium等,且这些微生物从ABR第1格室到第5格室呈现种类和丰度依次递减的趋势,不同格室中微生物群落发生了演替。在水力停留时间(HRT)24 h,运行温度(32±1)℃时ABR处理模拟畜禽养殖废水的效果较好。
[Abstract]:The rapid start-up process and operation conditions of anaerobic baffle reactor (ABR) for the treatment of simulated livestock and poultry wastewater were studied. By inoculating anaerobic granular sludge, fixed residence time, After 64 days of rapid start-up, the organic load of ABR reached 5.7 kg COD / m ~ 3 / d ~ (-1) and the COD removal rate was 98, which indicated that the concentration of mature granular sludge in each compartment of rapid start-up was 7.14 ~ 26.17 g / L ~ (-1), and the COD removal rate of ABR was 5.7kg / m ~ (3) / m ~ (-1), which indicated that the concentration of matured granular sludge in each compartment was 7.14 ~ 26.17 g / L ~ (-1). The median diameter increased from 0.89 mm at the beginning of start-up to 1.18 卤1.58 mm, with an average growth rate of 7.28 脳 10-3mm DX ~ (-1). The microbial community of mature granular sludge of ABR was analyzed by 16Sr DNA-PCR-DGGE technique. It was found that the most similar acid-producing bacteria of ABR were: 1: Raoultella ornithinolytica. unculturated Clostridiales sp. Uncultivated Acidobacteria bacterium Brevibacterium casei, and Uncultured Clostridium sp.. The species and abundance of these microbes decreased from the first compartment of ABR to the fifth compartment. Under the condition of HRT for 24 h and operating temperature of 32 卤1 鈩，

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