Yu Yaqin, Lu Xiwu
School of Energy and Environment, Southeast University, Sipailou 2#, Nanjing 210096, PR China.
Dept. of Civil Engineering, Yancheng Institute of Technology, Xiwangdadao 1#, Yancheng 224003, PR China.
Saudi J Biol Sci. 2017 Sep;24(6):1222-1228. doi: 10.1016/j.sjbs.2014.09.011. Epub 2014 Sep 28.
The microbial characteristics of granular sludge during the rapid start of an enhanced external circulating anaerobic reactor were studied to improve algae-laden water treatment efficiency. Results showed that algae laden water was effectively removed after about 35 d, and the removal rates of chemical oxygen demand (COD) and algal toxin were around 85% and 92%, respectively. Simultaneously, the gas generation rate was around 380 mL/gCOD. The microbial community structure in the granular sludge of the reactor was complicated, and dominated by coccus and filamentous bacteria. , , , , , and were the major microorganisms in the granular sludge. The activities of protease and coenzyme F were high in the granular sludge. The intermittent stirring device and the reverse-flow system were further found to overcome the disadvantage of the floating and crusting of cyanobacteria inside the reactor. Meanwhile, the effect of mass transfer inside the reactor can be accelerated to help give the reactor a rapid start.
为提高富藻水处理效率，研究了强化外循环厌氧反应器快速启动过程中颗粒污泥的微生物特性。结果表明，约35 d后富藻水得到有效去除，化学需氧量（COD）和藻毒素的去除率分别约为85%和92%。同时，产气率约为380 mL/gCOD。反应器颗粒污泥中的微生物群落结构复杂，以球菌和丝状菌为主。 、 、 、 、 、 和 是颗粒污泥中的主要微生物。颗粒污泥中蛋白酶和辅酶F的活性较高。进一步发现，间歇搅拌装置和回流系统可克服反应器内蓝藻上浮和结壳的缺点。同时，可加速反应器内的传质效果，有助于反应器快速启动。
