酵母废水两种预处理方法的比较研究
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摘要
对内电解和混凝沉淀法预处理酵母废水效果进行比较研究。在最佳工艺条件下,经两种方法预处理后废水的可生化性(BOD_5/COD)均有所提高,但混凝出水总铁浓度大于100 mg·L~(-1),可能会影响后续生物处理。预处理对后序厌氧处理效果的影响试验结果表明,内电解处理后的废水厌氧处理效率(COD去除率81.9%)明显高于混凝处理(COD去除率72.8%),说明内电解处理能更有效地提高废水的可生化性。探究内电解法在提高废水可生化性方面优于混凝沉淀法的可能原因,主要是内电解后生成的产物结构趋于简单化;分子量减小,而混凝沉淀出水中有机物结构未发生明显变化;同时内电解预处理运行成本也低于混凝沉淀法。
In this paper, pretreatment effect of yeast wastewater was compared using iron-carbon internal electrolysis and coagulation-precipitation method with the best possible conditions. The results show that the wastewater biodegradability is improved by either method, but the concentration of total iron exceeding 100 mg·L~(-1) may have adverse effect on latter biochemical treatment.Contrasting efficiency of latter biochemical treatment shows that internal electrolysis pretreatment with the COD removal rate at 81.9% is remarkably better than coagulation-precipitation at 72.8%, proving that internal electrolysis process can be more effective in improving the wastewater biodegradability.The reason behind is probably that organic compounds with iron-carbon internal electrolysis pretreatment have simpler molecule structure and reduced molecular weight than those with coagulation-precipitation and the cost of the former is lower that that of the latter.
In this paper, pretreatment effect of yeast wastewater was compared using iron-carbon internal electrolysis and coagulation-precipitation method with the best possible conditions. The results show that the wastewater biodegradability is improved by either method, but the concentration of total iron exceeding 100 mg·L~(-1) may have adverse effect on latter biochemical treatment.Contrasting efficiency of latter biochemical treatment shows that internal electrolysis pretreatment with the COD removal rate at 81.9% is remarkably better than coagulation-precipitation at 72.8%, proving that internal electrolysis process can be more effective in improving the wastewater biodegradability.The reason behind is probably that organic compounds with iron-carbon internal electrolysis pretreatment have simpler molecule structure and reduced molecular weight than those with coagulation-precipitation and the cost of the former is lower that that of the latter.
引文
[1]刘秀英, 周春芳, 周旋.酵母废水定量表征与生物难降解相关性分析[J].武汉工程大学学报, 2008, 30(3):57-59.
[2]方学兴, 胡松青, 李琳,等.高浓酵母废水的性质及不同预处理方法的探讨[J].食品与发酵科技, 2015, 51(6):1-6.
[3]SAGHIR A, HAJJAR S.The treatment of baker's yeast wastewater by an up flow anaerobic sludge blanket (UASB) reactor[J].Environmental Research & Technology, 2018, 1(2):39-44.
[4]李可欣.活性干酵母生产废液处理技术研究[J].黑龙江环境通报,2016,40(4):66-68.
[5]KALYUZHNYI S, GLADCHENKO M, STARAOSTINA E, et al.Integrated biological (anaerobic-aerobic) and physico-chemical treatment of baker's yeast wastewater[J].Water Science & Technology, 2005, 52(10/11):273-280.
[6]PIRSAHEB M, ROSTANUFAR M, MANSOURI A M, et al.Performance of an anaerobic baffled reactor (ABR) treating high strength baker's yeast manufacturing wastewater[J].Chemical Engineers, 2015, 47:137-148.
[7]周瑜, 梁震, 王焰新,等.铝系絮凝剂深度处理酵母废水实验研究[J].环境科学与技术, 2007, 30(1):83-85.
[8]代琳琳, 宋英豪, 荆降龙,等.臭氧强化混凝在酵母废水深度处理中的应用[J].工业水处理, 2014, 34(8):62-64.
[9]PALA A, ERDEN G.Decolorization of a baker's yeast industry effluent by fenton oxidation[J].Journal of Hazardous Materials, 2005, 127(1/2/3):141-148.
[10]BALCIOGLU G, GONDER Z B.Baker's yeast wastewater advanced treatment using ozonation and membrane process for irrigation reuse [J].Process Safety and Environmental Protection, 2018, 117:43-50.doi:10.1016/j.psep.2018.04.006.
[11]环境保护部, 国家质量监督检验检疫总局.GB 25462-2010酵母工业水污染物排放标准[S].北京:中国环境科学出版社, 2010.
[12]周旋, 刘慧, 王焰新,等.内电解预处理酵母工业废水研究[J].环境科学与技术, 2006, 29(11):69-70.
[13]史郁,刘慧,谢安,等.絮凝法预处理酵母废水研究[J].环境科学与技术,2010(4):141-145.
[14]贾国珍, 薛雪娟.“微波消解COD测定仪”在水环境监测中的应用与探讨[J].东北水利水电, 2001, 19(5):48-50.
[15]国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社, 2009.
[16]上海环境保护局.废水的厌氧生物处理[M].北京:中国环境科学出版社, 1999:34-36.
[17]SHI Y, LIU H, ZHOU X, et al.Mechanism on impact of internal-electrolysis pretreatment on biodegradability of yeast wastewater[J].Chinese Science Bulletin, 54(12):2 124-2 130.
[18]史郁,刘慧,谢安,等.FeCl3絮凝预处理提高酵母废水可生化性研究[J].水处理技术,2009,5(35):40-43.
[2]方学兴, 胡松青, 李琳,等.高浓酵母废水的性质及不同预处理方法的探讨[J].食品与发酵科技, 2015, 51(6):1-6.
[3]SAGHIR A, HAJJAR S.The treatment of baker's yeast wastewater by an up flow anaerobic sludge blanket (UASB) reactor[J].Environmental Research & Technology, 2018, 1(2):39-44.
[4]李可欣.活性干酵母生产废液处理技术研究[J].黑龙江环境通报,2016,40(4):66-68.
[5]KALYUZHNYI S, GLADCHENKO M, STARAOSTINA E, et al.Integrated biological (anaerobic-aerobic) and physico-chemical treatment of baker's yeast wastewater[J].Water Science & Technology, 2005, 52(10/11):273-280.
[6]PIRSAHEB M, ROSTANUFAR M, MANSOURI A M, et al.Performance of an anaerobic baffled reactor (ABR) treating high strength baker's yeast manufacturing wastewater[J].Chemical Engineers, 2015, 47:137-148.
[7]周瑜, 梁震, 王焰新,等.铝系絮凝剂深度处理酵母废水实验研究[J].环境科学与技术, 2007, 30(1):83-85.
[8]代琳琳, 宋英豪, 荆降龙,等.臭氧强化混凝在酵母废水深度处理中的应用[J].工业水处理, 2014, 34(8):62-64.
[9]PALA A, ERDEN G.Decolorization of a baker's yeast industry effluent by fenton oxidation[J].Journal of Hazardous Materials, 2005, 127(1/2/3):141-148.
[10]BALCIOGLU G, GONDER Z B.Baker's yeast wastewater advanced treatment using ozonation and membrane process for irrigation reuse [J].Process Safety and Environmental Protection, 2018, 117:43-50.doi:10.1016/j.psep.2018.04.006.
[11]环境保护部, 国家质量监督检验检疫总局.GB 25462-2010酵母工业水污染物排放标准[S].北京:中国环境科学出版社, 2010.
[12]周旋, 刘慧, 王焰新,等.内电解预处理酵母工业废水研究[J].环境科学与技术, 2006, 29(11):69-70.
[13]史郁,刘慧,谢安,等.絮凝法预处理酵母废水研究[J].环境科学与技术,2010(4):141-145.
[14]贾国珍, 薛雪娟.“微波消解COD测定仪”在水环境监测中的应用与探讨[J].东北水利水电, 2001, 19(5):48-50.
[15]国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社, 2009.
[16]上海环境保护局.废水的厌氧生物处理[M].北京:中国环境科学出版社, 1999:34-36.
[17]SHI Y, LIU H, ZHOU X, et al.Mechanism on impact of internal-electrolysis pretreatment on biodegradability of yeast wastewater[J].Chinese Science Bulletin, 54(12):2 124-2 130.
[18]史郁,刘慧,谢安,等.FeCl3絮凝预处理提高酵母废水可生化性研究[J].水处理技术,2009,5(35):40-43.
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