A novel outside cycle anaerobic reactor was developed based on the characteristics of expanded granular sludge bed(EGSB) and other anaerobic reactors.It was demonstrated that the sludge wash-off at high liquid upflow ...A novel outside cycle anaerobic reactor was developed based on the characteristics of expanded granular sludge bed(EGSB) and other anaerobic reactors.It was demonstrated that the sludge wash-off at high liquid upflow velocities could be controlled efficiently and good performance was achieved during municipal wastewater treatment.In order to achieve accurate prediction and effective control of sludge settling property in the reactor developed,a dispersion model was established on the basis of mass balance and free settling theory of granular sludge,taking consideration of the relevance between sludge settling velocity and sludge concentration.The simulation results of sludge distribution was in good agreement with the measured results at different liquid upflow velocities.In addition,the concentration of suspended solids(SS) in the effluent was simulated by introducing the separation efficiency of three-phase separator.The standard deviation of the simulated data was less than 6%.Based on the relative concentration of the liquid-sludge mixture,the sludge blanket height could be calculated by quadratic interpolation.The sludge blanket heights were basically identical at various upflow velocities,while the sludge concentrations at the same height differed.展开更多
以微电解和催化氧化技术作为预处理,采用双循环厌氧反应器、生物接触氧化以及曝气生物滤池工艺,处理吡啶类医药废水,出水各项指标均达到了国家排放标准《污水综合排放标准》(GB8978-1996)的一级标准。其中双循环厌氧反应器,处理经预处...以微电解和催化氧化技术作为预处理,采用双循环厌氧反应器、生物接触氧化以及曝气生物滤池工艺,处理吡啶类医药废水,出水各项指标均达到了国家排放标准《污水综合排放标准》(GB8978-1996)的一级标准。其中双循环厌氧反应器,处理经预处理后的医药废水时,容积负荷可达8.6 kg COD/(m3.d),COD去除效率可达83.8%。展开更多
文摘A novel outside cycle anaerobic reactor was developed based on the characteristics of expanded granular sludge bed(EGSB) and other anaerobic reactors.It was demonstrated that the sludge wash-off at high liquid upflow velocities could be controlled efficiently and good performance was achieved during municipal wastewater treatment.In order to achieve accurate prediction and effective control of sludge settling property in the reactor developed,a dispersion model was established on the basis of mass balance and free settling theory of granular sludge,taking consideration of the relevance between sludge settling velocity and sludge concentration.The simulation results of sludge distribution was in good agreement with the measured results at different liquid upflow velocities.In addition,the concentration of suspended solids(SS) in the effluent was simulated by introducing the separation efficiency of three-phase separator.The standard deviation of the simulated data was less than 6%.Based on the relative concentration of the liquid-sludge mixture,the sludge blanket height could be calculated by quadratic interpolation.The sludge blanket heights were basically identical at various upflow velocities,while the sludge concentrations at the same height differed.
文摘以微电解和催化氧化技术作为预处理,采用双循环厌氧反应器、生物接触氧化以及曝气生物滤池工艺,处理吡啶类医药废水,出水各项指标均达到了国家排放标准《污水综合排放标准》(GB8978-1996)的一级标准。其中双循环厌氧反应器,处理经预处理后的医药废水时,容积负荷可达8.6 kg COD/(m3.d),COD去除效率可达83.8%。
