响应面优化EM菌对皂素废水的处理工艺
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摘要
通过对黄姜皂素废水的水质分析,设计并检验了铁碳微电解-Fenton氧化-EM菌处理工艺,主要研究了EM菌对废水的处理效果。利用红外光谱(FT-IR)、紫外光谱(UV)、TOC对其进行检测,考察了pH、曝气时间、EM菌质量分数、反应温度对皂素废水COD去除率的影响。在单因素实验的基础上,采用响应面分析法对工艺进行优化,建立了各影响因子关于COD去除率的回归方程,得到该工艺的最佳条件:pH为8.0,曝气时间为46 h,EM菌投加量为1.2%,反应温度为30℃。在最佳工艺条件下,COD去除率为88.04%。
Through the analysis on zingiberin saponin wastewater,the iron-carbon micro-electrolysis/Fenton oxidation/EM bacteria treatment process is designed and evaluated to study the treatment effect of EM bacteria on the wastewater.The effects of pH,aeration time,dosage of EM bacteria and reaction temperature on the COD removal rate of saponin wastewater are investigated by means of FTIR,UV and TOC. On the base of single factor experiment,the treatment process is optimized by response surface analysis method and regression equations for all factors on COD removal rate are established.The optimum conditions for the treatment process are obtained as follows: pH = 8. 0,aeration time is 46 h,EM bacteria dosage is 1. 2% and the reaction temperature remains at 30℃.Under the optimum conditions,COD removal rate can reach 88. 04%.
Through the analysis on zingiberin saponin wastewater,the iron-carbon micro-electrolysis/Fenton oxidation/EM bacteria treatment process is designed and evaluated to study the treatment effect of EM bacteria on the wastewater.The effects of pH,aeration time,dosage of EM bacteria and reaction temperature on the COD removal rate of saponin wastewater are investigated by means of FTIR,UV and TOC. On the base of single factor experiment,the treatment process is optimized by response surface analysis method and regression equations for all factors on COD removal rate are established.The optimum conditions for the treatment process are obtained as follows: pH = 8. 0,aeration time is 46 h,EM bacteria dosage is 1. 2% and the reaction temperature remains at 30℃.Under the optimum conditions,COD removal rate can reach 88. 04%.
引文
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[2]唐受印,戴友芝.食品工业废水处理[M].北京:化学工业出版社,2009:230-246.
[3]严平,廖银章,李旭东.EM有效微生物技术在废水处理中的应用与发展[J].工业用水与废水,2004,35(4):1-4.
[4]乔俊婧.EM技术在污水处理中的应用[J].资源开发与市场,2008,24(11):968-970.
[5]李维炯,倪永珍.EM技术研究与应用[M].北京:农业科技出版社,1998:10-22.
[6]国家环境保局编委会.水和废水监测分析方法[M].3版.北京:中国环境科学出版社,1994:254,283,354.
[7]刘骏.微波消解测定水质指标的方法研究[D].武汉:华中科技大学,2005:34-39.
[8]程银芳,陈芳.Fenton试剂处理制药厂废水研究[J].精细石油化工进展,2012,13(1):31-34.
[9]Rima J,Aoun E,Hanna K,et al.Degradation of phenol,into mineral compounds,in aqueous solutions using Zero-Valent Iron Powder(ZVIP)[J].Journal De PhysiqueⅣ,2005,124:81-89.
[10]Vlyssides A G,Papaioannou D,Loizidoy M,et al.Testing an electrochemical method for treatment of textile dye wastewater[J].Waste Management,2000,20(7):569-574.
[11]孟庆尧,邓德才,刘美艳.Fenton氧化处理含酚类废水研究[J].皮革与化工,2009,26(3):34-36.
[12]苏荣军,陆占国,陈平,等.Fenton试剂深度处理胃必治制药废水[J].工业用水与废水,2008,39(3):68-71.
[13]施跃锦.Fenton反应的应用及其影响因素的研究[J].贵州化工,2009,34(2):30-34.
[14]陈忠林,朱洪平,邹洪波,等.Fenton试剂处理水中有机物的特性及其应用[J].黑龙江大学自然科学学报,2005,22(2):204-207.