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
【目的】针对南方污水处理厂运行中普遍存在的低碳氮比(C/N=4.5~6.0)水质特点,探索提升原水碳源利用效率、降低曝气能耗,并实现高效低碳脱氮的调控策略和技术方案。【方法】通过开展5.0 m^(3)/h的中试试验,提出了5段Bardenpho工艺与多...【目的】针对南方污水处理厂运行中普遍存在的低碳氮比(C/N=4.5~6.0)水质特点,探索提升原水碳源利用效率、降低曝气能耗,并实现高效低碳脱氮的调控策略和技术方案。【方法】通过开展5.0 m^(3)/h的中试试验,提出了5段Bardenpho工艺与多级缺氧-好氧(AO)工艺的高效低碳运行优化方案和调控策略,并利用碳排放核算分析,对比了不同生物脱氮工艺的碳排放强度,进而提出了污水强化生物脱氮的优化设计与低碳运行策略。同时,在湖北省某污水处理厂开展了工程应用,以期为未来污水处理厂的生化处理系统减污降碳协同增效提供技术参考。【结果】通过实施多点进水和微氧控制等调控手段,将前置好氧区的溶解氧控制在1.0~1.5 mg/L,后置好氧区控制在2.0~2.5 mg/L,五段Bardenpho工艺和多级AO工艺原水内碳源利用率提高20.95%以上,同时提升了5%~14%的反硝化脱氮效率,并实现了2%~6%的电能节约。经核算,5段Bardenpho工艺和多级AO工艺的总碳排放强度分别为0.229 kg CO_(2)/m^(3)和0.211 kg CO_(2)/m^(3)。【结论】相对于传统厌氧-缺氧-好氧(AAO)工艺,通过对5段Bardenpho工艺和多级AO工艺进行优化调控,成功实现了低碳高效运行,不仅提升了脱氮除磷效果,还同步实现了节能降耗。为显著提升活性污泥工艺的脱氮效率并促进节能减碳,工程设计需前瞻,预留充足设计余量与设施,构建精准灵活的调控框架。通过优化碳源分配、调整混合液回流比、控制污泥浓度及调节溶解氧浓度,确保水质达标,提升效能,实现资源高效利用与碳减排。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.
文摘【目的】针对南方污水处理厂运行中普遍存在的低碳氮比(C/N=4.5~6.0)水质特点,探索提升原水碳源利用效率、降低曝气能耗,并实现高效低碳脱氮的调控策略和技术方案。【方法】通过开展5.0 m^(3)/h的中试试验,提出了5段Bardenpho工艺与多级缺氧-好氧(AO)工艺的高效低碳运行优化方案和调控策略,并利用碳排放核算分析,对比了不同生物脱氮工艺的碳排放强度,进而提出了污水强化生物脱氮的优化设计与低碳运行策略。同时,在湖北省某污水处理厂开展了工程应用,以期为未来污水处理厂的生化处理系统减污降碳协同增效提供技术参考。【结果】通过实施多点进水和微氧控制等调控手段,将前置好氧区的溶解氧控制在1.0~1.5 mg/L,后置好氧区控制在2.0~2.5 mg/L,五段Bardenpho工艺和多级AO工艺原水内碳源利用率提高20.95%以上,同时提升了5%~14%的反硝化脱氮效率,并实现了2%~6%的电能节约。经核算,5段Bardenpho工艺和多级AO工艺的总碳排放强度分别为0.229 kg CO_(2)/m^(3)和0.211 kg CO_(2)/m^(3)。【结论】相对于传统厌氧-缺氧-好氧(AAO)工艺,通过对5段Bardenpho工艺和多级AO工艺进行优化调控,成功实现了低碳高效运行,不仅提升了脱氮除磷效果,还同步实现了节能降耗。为显著提升活性污泥工艺的脱氮效率并促进节能减碳,工程设计需前瞻,预留充足设计余量与设施,构建精准灵活的调控框架。通过优化碳源分配、调整混合液回流比、控制污泥浓度及调节溶解氧浓度,确保水质达标,提升效能,实现资源高效利用与碳减排。
