Vinasse poses considerable environmental problems due to its complex composition of organic matter,minerals,and toxic compounds.If discharged into the environment without treatment,it can cause adverse impacts on ecos...Vinasse poses considerable environmental problems due to its complex composition of organic matter,minerals,and toxic compounds.If discharged into the environment without treatment,it can cause adverse impacts on ecosystems.This research investigated the effectiveness of an integrated treatment system involving an upflow anaerobic sludge blanket(UASB)reactor and the modified Bardenpho process(MBP)for purifying synthetic vinasse.The study lasted for 167 days,during which the integrated UASB-MBP system processed untreated synthetic vinasse with organic loading rates(OLR)ranging from 1.6 to 12.5 kgCOD/m3 day.The UASB-MBP system impressively achieved a COD removal efficiency of 99.41%.Removal efficiencies of approximately 98.14,99.91,and 99.63%were also achieved for total nitrogen(TN),total phosphorus(TP)and total ammonium(NH4+-N),respectively.The final discharge was 51.06 mg/L.The concentrations of NH4+-N and TN in the outflow of the settlement tank were 0.8-1.2 mg/L and 5.1-7.9 mg/L,respectively.Optimal performance was achieved when the HRT and nitrate recycle ratio were 15.5 h and 200%,respectively.The temperature was kept in the mesophilic range(33-35°C)during the experiments.These results underscores the potential of the integrated UASB reactor and modified Bardenpho process to provide an effective and eco-friendly approach for concurrent removal of COD and nutrients from vinasse treatment,offering broad prospects for implementation in wastewater treatment.展开更多
Since the industrial revolution, rapid urbanization has not only contributed to the rapid growth of the urban population, but also resulted in the more serious problems of urban water environment, which has made the s...Since the industrial revolution, rapid urbanization has not only contributed to the rapid growth of the urban population, but also resulted in the more serious problems of urban water environment, which has made the sewage treatment increasingly important. In order to meet the peoples desire for a better living environment, the requirements for effluent from sewage plants have become more and more strict, which has led to an increase in the number of sewage treatment units and the upgrading of technical methods. As a result, the cost of alteration and operation of the sewage treatment has been increasing. The Bardenpho process has the advantages of flexible operation mode, short hydraulic retention time, difficult bulking of activated sludge, little influence of influent quality on treatment effect, low operation cost and low capital construction cost, etc. By more scholars and designers at home and abroad, especially the sewage treatment bid reform has been more widely used. This paper explores the application of the Bardenpho treatment process in the bid-raising reconstruction of sewage treatment plants, hoping to help the bid-raising reconstruction of sewage plants.展开更多
文摘Vinasse poses considerable environmental problems due to its complex composition of organic matter,minerals,and toxic compounds.If discharged into the environment without treatment,it can cause adverse impacts on ecosystems.This research investigated the effectiveness of an integrated treatment system involving an upflow anaerobic sludge blanket(UASB)reactor and the modified Bardenpho process(MBP)for purifying synthetic vinasse.The study lasted for 167 days,during which the integrated UASB-MBP system processed untreated synthetic vinasse with organic loading rates(OLR)ranging from 1.6 to 12.5 kgCOD/m3 day.The UASB-MBP system impressively achieved a COD removal efficiency of 99.41%.Removal efficiencies of approximately 98.14,99.91,and 99.63%were also achieved for total nitrogen(TN),total phosphorus(TP)and total ammonium(NH4+-N),respectively.The final discharge was 51.06 mg/L.The concentrations of NH4+-N and TN in the outflow of the settlement tank were 0.8-1.2 mg/L and 5.1-7.9 mg/L,respectively.Optimal performance was achieved when the HRT and nitrate recycle ratio were 15.5 h and 200%,respectively.The temperature was kept in the mesophilic range(33-35°C)during the experiments.These results underscores the potential of the integrated UASB reactor and modified Bardenpho process to provide an effective and eco-friendly approach for concurrent removal of COD and nutrients from vinasse treatment,offering broad prospects for implementation in wastewater treatment.
文摘Since the industrial revolution, rapid urbanization has not only contributed to the rapid growth of the urban population, but also resulted in the more serious problems of urban water environment, which has made the sewage treatment increasingly important. In order to meet the peoples desire for a better living environment, the requirements for effluent from sewage plants have become more and more strict, which has led to an increase in the number of sewage treatment units and the upgrading of technical methods. As a result, the cost of alteration and operation of the sewage treatment has been increasing. The Bardenpho process has the advantages of flexible operation mode, short hydraulic retention time, difficult bulking of activated sludge, little influence of influent quality on treatment effect, low operation cost and low capital construction cost, etc. By more scholars and designers at home and abroad, especially the sewage treatment bid reform has been more widely used. This paper explores the application of the Bardenpho treatment process in the bid-raising reconstruction of sewage treatment plants, hoping to help the bid-raising reconstruction of sewage plants.
