【摘要】 针对北方寒冷地区酚类废水处理效能低下,课题以苯酚废水为研究对象,在低温条件下,通过向原水中梯度增加苯酚质量浓度,考察改进型高效厌氧反应器对其的去除效能,同时采用PCR扩增、克隆文库构建、生物信息学与统计学分析等分析手段,探究适应低温条件下酚类废水的优势菌群,结果表明,在温度为10~150℃,纯苯酚废水进水时COD的去除率稳定在50%,且驯化后B/C值由0.08增加到0.21,同比增加162.5%,基因分析得出系统内优势菌群是絮状束毛球菌属(Trichococcus sp.),占细菌培养总数的68%.更多还原

【Abstract】 Since phenol wastewater treatment efficiency was low in cold areas of northern China. Therefore,there is an urgent need to search for novel strategies for phenolic wastewater treatment. The experiment,with phenolic wastewater as the object of the research,was performed in a gradient of increasing phenol-containing raw water in low temperature to evaluated removal efficiency of modified high-rate anaerobic apparatus. Dominant bacteria was separated and identified. It was shown that COD removal rate was up to 50% for pure phenol wastewater(844. 5 mg/L) when the temperature varied from 10 °C to 15 °C and B/C value increased from 0. 08 to 0. 21 after domestication with a rise of 162. 5%. The results of genetic analysis suggested that the Trichococcus sp. was dominant bacteria accounting for 68% of the total bacterial.更多还原