Abstract: The improved UASB-two-stage A/O-coagulation combined process has been used for treating hogpen biogas slurry. The treatment scale is 100 m³/d,total investment CNY1 245 700.00,and operating costs 2.30 CNY/(m³·d). The results show that after treated by the combined process,the removing rates of COD_Cr,BOD₅, NH₃-N,TP and SS are 94.0%, 97.9%, 92.5%, 94.2%, and 90.2%,respectively. All the final effluent quality indexes meet the requirements specified in the Discharge Standard of Pollutants for Livestock and Poultry Breeding (GB 18596-2001).

Key words: improved UASB, two-stage A/O, coagulation, hogpen biogas slurry

摘要： 采用改良UASB-两级A/O-混凝组合工艺对猪场沼液进行处理，处理规模100 m³/d。工程总投资124.57万，运行费用2.30元（/m³·d）。结果表明：经过该组合工艺处理后COD_Cr、BOD₅、NH₃-N、TP、SS去除率分别为94.0%、97.9%、92.5%、94.2%、90.2%，最终出水指标均符合《畜禽养殖业污染物排放标准》（GB 18596-2001）的要求。

关键词: 改良UASB, 两级A/O, 混凝, 猪场沼液

CLC Number: 

• X703.1