【摘要】 该文根据厌氧生物膜技术和推流原理,采用内充空心球状填料的地下厌氧管道式或折流式反应器为处理设备,研究了农村生活污水地埋式无动力厌氧达标处理技术(UUAR)。经过一年多的小试、中试及实际应用,结果表明:在水力停留时间1d及常温条件下,UUAR对农村生活污水CODCr、BOD5、SS、T-N、T-P、大肠菌群、细菌总数和蛔虫卵的平均去除率分别达到66.1%~68.3%、70.8%~76.8%、80.5%~90.2%、18.26%~23.0%、33.9%~35.2%、95.8%~99.8%、37.4%~82.9%和78.7%~100%,出水水质稳定达到国家二级排放标准;通过优化设计和调节球状填料的配比,并延长水力停留时间至2d,出水可达到国家一级排放标准,且未出现剩余厌氧污泥的积累问题。UUAR无日常运行费用,适宜于农村生活污水的分散处理。更多还原

【Abstract】 An underground unpowered anaerobic reactor （UUAR） for the treatment of rural domestic sewage was studied in this paper, based on the anaerobic biomembrane technology and push-flow theory by using the anaerobic pipeline or baffler reactor full of hollow-sphere fillings. After more than one year of laboratory-scale experiment, pilot-scale test and practical application, the results showed, under the condition of hydraulic retention time （HRT） 1 d and normal temperature, the average removal ratios of COD_Cr, BOD₅, SS, T-N, T-P, coliform group bacteria, total number of bacteria and ascaris of UUAR reached 66.1%⁶8.3%, 70.8%⁷6.8%, 80.5%⁹0.2%, 18.26%²3.04%, 33.9%³5.2%, 95.8%⁹9.8%, 37.4%⁸2.9% and 78.7%¹00%, respectively, which met the requirements of second class discharge standard of China. Furthermore, by optimized the mixture ratio of variable hollow-sphere media and extended the HRT to 2 d, the indexes of water quality of the （effluent） measured up to the first class discharge standard, and residual sludge was little in the reactor. UUAR has the merits such as power-off, land-free, little effect by influent variety and no operating cost, and is suitable for the decentralized treatment of rural domestic sewage.更多还原