Huang Jianping, Xiao Ling, Xi Chunhui
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450011, China,
Biotechnol Lett. 2015 Apr;37(4):815-23. doi: 10.1007/s10529-014-1748-2. Epub 2014 Dec 24.
The performance and microbial community structure of a pilot-scale upflow anaerobic sludge blanket (UASB) reactor inoculated with flocculent sludge were investigated over 52 days. The characteristics of corn-ethanol wastewater were as follows: CODCr, 1,050-4,970 mg l(-1); ammonia, 14-298 mg l(-1); and alkalinity, 332-2,867 mg l(-1). The UASB could start up smoothly with a hydraulic loading rate lower than 180 l h(-1) and a ratio of volatile fatty acid versus alkalinity between 0.04 and 0.48. The maximum gas production rate was 432 l h(-1) and the highest volumetric loading rate of 7.2 kg m(-3) day(-1) was obtained after 48 days. The 1 mm granules could form a complex network and were composed of many Methanosaeta. Aceticlastic methanogens served as a dominant methanogenic group, which accounted for the relatively high resistance to shock loading.
在52天的时间里，对一个接种了絮凝污泥的中试规模上流式厌氧污泥床（UASB）反应器的性能和微生物群落结构进行了研究。玉米乙醇废水的特性如下：化学需氧量（CODCr），1050 - 4970毫克/升；氨，14 - 298毫克/升；碱度，332 - 2867毫克/升。当水力负荷率低于180升/小时且挥发性脂肪酸与碱度之比在0.04至0.48之间时，UASB能够顺利启动。最大产气率为432升/小时，48天后获得了最高容积负荷率7.2千克/立方米·天。1毫米的颗粒可以形成复杂的网络，并且由许多甲烷八叠球菌组成。乙酸型产甲烷菌是主要的产甲烷菌群，这使得该反应器对冲击负荷具有较高的抗性。
