Yang Bo, Xu Hui, Feng Xiu-Ping, Li Fang, Tian Qing, Ma Chun-Yan
State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
Huan Jing Ke Xue. 2017 May 8;38(5):2021-2029. doi: 10.13227/j.hjkx.201609024.
A strengthen circulation anaerobic reactor (SCAR) treating artificial municipal wastewater was investigated under different volumetric loading rate(VLR) and the reactor performance, characteristics of granular sludge and microbial community structure were also tested in this experiment. The results of the experiment demonstrated that the hydraulic retention time (HRT) of 6h could be regarded as the key parameter dominating the efficient operation of SCAR reactor, in which condition the COD removal efficiency was above 75%. The coenzyme Fand the maximum specific methanogenic activity (SMA) of granular sludge increased with increasing VLR, and the EPS contents, especially TB-EPS in the granule sludge also increased obviously. Consistently, the characteristics of anaerobic granular sludge and the removal efficiency of the reactor were influenced by both sludge loading and HRT. The microbial community structure and its spatial distribution in the reactor were also affected by sludge loading, while the relative abundance of the microbial community with different metabolic characteristics in different spatial positions changed with the adjustment of the sludge loading.
研究了一种处理人工城市污水的强化循环厌氧反应器（SCAR）在不同容积负荷率（VLR）下的性能，并对该反应器的性能、颗粒污泥特性和微生物群落结构进行了测试。实验结果表明，6小时的水力停留时间（HRT）可被视为主导SCAR反应器高效运行的关键参数，在此条件下，COD去除效率高于75%。颗粒污泥的辅酶F和最大比产甲烷活性（SMA）随VLR的增加而增加，颗粒污泥中的EPS含量，尤其是TB-EPS也明显增加。一致地，厌氧颗粒污泥的特性和反应器的去除效率受污泥负荷和HRT的影响。反应器中微生物群落结构及其空间分布也受污泥负荷的影响，而不同空间位置具有不同代谢特征的微生物群落的相对丰度随污泥负荷的调整而变化。
