有效微生物(EM)处理食品废水的试验研究

Experimental Study on Treatment of Food Wastewater with Effective Microorganism

摘要: 针对有效微生物群(EM)中含有好氧和厌氧微生物的特点,采用SBR反应器,进行了用EM处理食品废水的试验研究.结果表明,当进水COD_Cr为2 000～4 000 mg/L,pH为5.5～6.5时,向废水中投加0.5%～0.7%的EM复壮液,曝气12 h,沉淀10 h,COD_Cr的质量浓度可降为700～2 000 mg/L,COD_Cr去除率可达83.0%.

Abstract: Considering the characteristic of effective microorganism(EM)containing aerobic and anaerobic microorganisms,using sequences batch reactor(SBR)process technology,EM was adopted to treat food wastewater.The results show that when the inlet COD_Cr content and pH is respectively in range of 2000～4000 mg/L and 5.5～6.5,under conditions that the rejuvenated EM seeded to food wastewater is 0.5%～0.7% and the aeration time and sedimentation time is respectively 12 h and 10 h,the concentration of COD_Cr is decreased to 700～2 000 mg/L, and a removal of 83.0% for COD_Cr obtained.