研究了在常温条件下不同污泥负荷对UBF反应器污水处理性能的影响。结果表明在进水浓度为1 200 mg/L、水力停留时间(HRT)为10 h、污泥负荷为0.59 kg COD/kg MLSS·d时,UBF对COD的去除效果最佳,达80.14%;在污泥负荷达到1.01 kg COD/kg...研究了在常温条件下不同污泥负荷对UBF反应器污水处理性能的影响。结果表明在进水浓度为1 200 mg/L、水力停留时间(HRT)为10 h、污泥负荷为0.59 kg COD/kg MLSS·d时,UBF对COD的去除效果最佳,达80.14%;在污泥负荷达到1.01 kg COD/kg MLSS·d之前,污泥中生物量比例随着污泥负荷的增加而增加,MLVSS/MLSS值可达0.89;UBF反应器对污水可生化性有较好的改善效果,BOD5/CODCr比值增幅可达28.52%,且低污泥负荷更有利于污水可生化性的改善。展开更多
This paper describes the feasibility of fresh leachate treatment by an upflow blanket filter(UBF).Through dilution and partial effluent recycling,the organic loading rates increased from 0.51 to 14.56 kg COD/(m^(3)...This paper describes the feasibility of fresh leachate treatment by an upflow blanket filter(UBF).Through dilution and partial effluent recycling,the organic loading rates increased from 0.51 to 14.56 kg COD/(m^(3)·d),meanwhile the corresponding hydraulic retention time decreased from 9.0 to 3.6 d.The reactor was able to achieve steady-state within 80 d.Based on the distribution of COD fluxes in the process,it was concluded that anabolism was the main pathway of COD removal in the initial phase(1–33 d),accounting for 57%–85%of total COD removed.As the anaerobic consortium of bacteria reached steady-state(after 70–86 d),the majority of COD removed was transformed into methane,because the specific methane yield was close to the theoretical value(0.36 L CH4/(g CODdeg)).展开更多
文摘研究了在常温条件下不同污泥负荷对UBF反应器污水处理性能的影响。结果表明在进水浓度为1 200 mg/L、水力停留时间(HRT)为10 h、污泥负荷为0.59 kg COD/kg MLSS·d时,UBF对COD的去除效果最佳,达80.14%;在污泥负荷达到1.01 kg COD/kg MLSS·d之前,污泥中生物量比例随着污泥负荷的增加而增加,MLVSS/MLSS值可达0.89;UBF反应器对污水可生化性有较好的改善效果,BOD5/CODCr比值增幅可达28.52%,且低污泥负荷更有利于污水可生化性的改善。
基金the National High-Tech Research and Development Program(863 Program)of China(Grant No.2008AA062101)the Key Project of Chinese Ministry of Education(No.107122)。
文摘This paper describes the feasibility of fresh leachate treatment by an upflow blanket filter(UBF).Through dilution and partial effluent recycling,the organic loading rates increased from 0.51 to 14.56 kg COD/(m^(3)·d),meanwhile the corresponding hydraulic retention time decreased from 9.0 to 3.6 d.The reactor was able to achieve steady-state within 80 d.Based on the distribution of COD fluxes in the process,it was concluded that anabolism was the main pathway of COD removal in the initial phase(1–33 d),accounting for 57%–85%of total COD removed.As the anaerobic consortium of bacteria reached steady-state(after 70–86 d),the majority of COD removed was transformed into methane,because the specific methane yield was close to the theoretical value(0.36 L CH4/(g CODdeg)).
