AMBR-MABR耦合工艺处理模拟畜禽养殖废水的启动和运行

发布时间：2018-05-08 03:14

  本文选题：AMBR-MABR耦合工艺 + 模拟畜禽养殖废水　； 参考：《环境工程学报》2017年11期

【摘要】：研究了AMBR-MABR处理模拟畜禽养殖废水的启动过程和成熟污泥的特征。通过在AMBR厌氧格室和MABR格室分别接种ABR-MABR对应格室中的污泥,然后固定停留时间、逐步升高进水负荷进行AMBR-MABR的启动。83 d后,AMBR-MABR的有机负荷(OLR)(以COD计)达到7.5 kg·(m3·d)-1,COD、NH+4-N和总氮去除率分别可达83.96%、37.56%和38.29%,反应器启动成功。启动成功后,AMBR-MABR污泥的浓度在17.5~30.0 g·L-1之间;厌氧格室污泥的粒径为0.25~0.74 mm,曝气格室污泥的粒径均为0.18 mm。AMBR-MABR中各格室的污泥表面凹凸不平,疏松多孔,主要由杆状菌、球状菌、念珠状菌及胞外聚合物(EPS)等组成,EPS主要为多糖、蛋白质和溶解性微生物代谢产物,富里酸和腐殖酸的含量较少。反应器中微生物种类丰富,微生物群落可以分为3类:第1类为Ⅰ、Ⅵ格室;第2类为Ⅱ、Ⅲ格室;第3类为Ⅳ、Ⅴ格室,这与PCA分析的结果一致。
[Abstract]:The start-up process and mature sludge characteristics of simulated livestock and poultry wastewater treated with AMBR-MABR were studied. Sludge was inoculated in the AMBR anaerobic compartment and the MABR compartment, respectively, and the residence time was fixed. The organic load of AMBR-MABR (measured by COD) reached 7.5 kg / m ~ 3 / d ~ (-1) COD NH _ 4-N and removal efficiency of total nitrogen reached 83.96% ~ 37.56% and 38.29% respectively. The reactor was successfully started. After successful start-up, the concentration of AMBR-MABR sludge was between 17.5 ~ 30.0 g 路L ~ (-1), the diameter of anaerobic cell sludge was 0.25 ~ 0.74 mm, the diameter of aeration cell sludge was 0.18 mm.AMBR-MABR, the sludge surface of each cell was rough and porous, which was mainly composed of rod bacteria and globular bacteria. The main components of EPS are polysaccharide, protein and soluble microbial metabolites, and the contents of fulvic acid and humic acid are less. The microbial community can be divided into three types: the first type is 鈪，

本文编号：1859706