底物条件对兼氧MBR气化除磷效能的影响
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摘要
以模拟养猪厂排放的高磷废水为研究对象,通过改变底物条件,考察初始C/P值、进水PO3-4-P浓度对兼氧MBR气化除磷效能的影响。结果表明:底物条件对兼氧MBR气化除磷效能的影响显著,初始C/P值过高或过低都不利于磷酸盐的去除与磷化氢的生成。当初始C/P为50时,兼氧MBR反应器对磷酸盐的去除率达到最高,平均去除率为34.22%,磷化氢的产量也达到最高,平均为277.5μg/L。同时,在碳源充足的条件下,当进水ρ(PO3-4-P)浓度为40mg/L时,兼氧MBR反应器对磷酸盐的去除率达到最高,磷化氢的产量也达到最高。工艺适用性分析表明,兼氧MBR气化除磷工艺适用于处理养殖废水、屠宰废水、肉食品加工废水等碳源充足的高磷污(废)水。
The effects of the initial C/P value and PO3-4-P concentration on phosphorus removal efficiency by gasification of facultative MBR were investigated under varied substrate conditions in treatment of high-phosphorus simulated piggery breeding wastewater. The results showed that the substrate condition had a significant effect on phosphorus removal efficiency by gasification,initial C/P ratio high or low was not propitious to phosphate reduction and phosphine generation. The phosphate removal rate and the production of phosphine was 34. 22% and 277. 5 μg/L,when the initial C/P ratio was 50. Under enough carbon source,the phosphate removal rate and the production of phosphine were highest when PO3-4-P concentration was40 mg/L. The phosphorus removal process by gasification in facultative MBR was suitable for treating breeding wastewater,slaughter-house wastewater and meat processing wastewater and other high-phosphorus wastewater with enough carbon source.
The effects of the initial C/P value and PO3-4-P concentration on phosphorus removal efficiency by gasification of facultative MBR were investigated under varied substrate conditions in treatment of high-phosphorus simulated piggery breeding wastewater. The results showed that the substrate condition had a significant effect on phosphorus removal efficiency by gasification,initial C/P ratio high or low was not propitious to phosphate reduction and phosphine generation. The phosphate removal rate and the production of phosphine was 34. 22% and 277. 5 μg/L,when the initial C/P ratio was 50. Under enough carbon source,the phosphate removal rate and the production of phosphine were highest when PO3-4-P concentration was40 mg/L. The phosphorus removal process by gasification in facultative MBR was suitable for treating breeding wastewater,slaughter-house wastewater and meat processing wastewater and other high-phosphorus wastewater with enough carbon source.
引文
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[10]龙腾锐,陈垚,周健,等.硝酸盐对磷酸盐还原系统除磷效能的影响研究[J].土木建筑与环境工程,2009,31(5):127-131.
[11]Percheron G,Bernet N,Moletta R.Interaction between methanogenic and nitrate reducing bacteria during the an-aerobic digestion of an industrial sulfate rich wastewater[J].FEMS Micro Biolecol,1999,29(4):341-350.
[2]Eismann F,Glindemann D,Bergmann A,et al.Balancing phosphine in manure fermentation[J].J Environ Sci Heal B,1997(32):955-968.
[3]王瑾丰,牛晓军,马金玲.厌氧条件下微生物将磷还原为磷化氢[J].微生物学通报,2015,42(1):31-41.
[4]Roels J,Verstraete W.Biological formation of volatile phosphorus compounds[J].Bioresour Technol,2001,79(3):243-25.
[5]孙亮.磷化氢的释放规律及其过程研究[D].广州:广州大学,2012.
[6]陈垚,龙腾锐,周健,等.底物条件对好氧磷酸盐还原除磷效能的影响[J].中国给水排水,2010,26(9):29-32.
[7]廖志民.兼氧型MBR工艺“气化除磷”效果研究[J].中国给水排水,2010,26(11):51-53.
[8]莫志杰.兼氧MBR处理养殖废水工艺探讨[J].资源节约与环保,2016,2:186-187.
[9]廖志民,刘华琼,刘宇森,等.一种兼FMBR技术处理食品废水[J].徐州工程学院学报,2014,29(3):20-24.
[10]龙腾锐,陈垚,周健,等.硝酸盐对磷酸盐还原系统除磷效能的影响研究[J].土木建筑与环境工程,2009,31(5):127-131.
[11]Percheron G,Bernet N,Moletta R.Interaction between methanogenic and nitrate reducing bacteria during the an-aerobic digestion of an industrial sulfate rich wastewater[J].FEMS Micro Biolecol,1999,29(4):341-350.