铁炭-Fenton联合预处理CLT酸酸析废水效能
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摘要
针对我国高产量有机颜料CLT酸,采用铁炭微电解-Fenton联合工艺对其产生的酸析废水进行预处理效能研究,分别考查进水pH、反应时间、铁炭比例、过氧化氢投加量及投放时间等因素对CLT酸酸析废水处理效果的影响.结果表明:当原水COD在28.1～34.5 g/L时,控制进水pH 2.5左右、铁炭比2∶1、反应时间60 min的条件下,铁炭微电解预处理工艺对COD的去除率大于32%;向微电解出水投加30%(质量分数)、0.15 mol/L的过氧化氢溶液进行Fenton预处理,在常温、反应时间60 min的条件下,对COD的去除率大于43%,废水可生化性由原水的0.08提高到0.43.
The Fe/C micro-electrolysis and Fenton combined process was used to solve the high yield organic CLT acid wastewater in our country.The influence factors of pH,reaction time,ratio of iron and coke,H2O2 dosage and reaction time of H2O2 were investigated.The results show that when the influent COD is 28.1 g/L to 34.5 g/L,pH is 2.5,ratio of iron and coke is 2:1 and the reaction time is 60 min,the removal rate of COD by ferric-carbon micro-electrolysis is above 30%.For treatment with the Fenton when the H2O2(30%) dosage is 0.15 mol/L,the reaction time is 60 min and the temperature is 20 to 30 ℃,the removal rate of COD reaches more than 43%,B/C ratio of wastewater increases from 0.08 to 0.43.
The Fe/C micro-electrolysis and Fenton combined process was used to solve the high yield organic CLT acid wastewater in our country.The influence factors of pH,reaction time,ratio of iron and coke,H2O2 dosage and reaction time of H2O2 were investigated.The results show that when the influent COD is 28.1 g/L to 34.5 g/L,pH is 2.5,ratio of iron and coke is 2:1 and the reaction time is 60 min,the removal rate of COD by ferric-carbon micro-electrolysis is above 30%.For treatment with the Fenton when the H2O2(30%) dosage is 0.15 mol/L,the reaction time is 60 min and the temperature is 20 to 30 ℃,the removal rate of COD reaches more than 43%,B/C ratio of wastewater increases from 0.08 to 0.43.
引文
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[13]李再兴,杨景亮,邓晓丽.铁炭内电解预处理阿维菌素废水[J].化工环保,2002,22(6):347-349.
[14]姜兴华,刘勇健,金亮基.铁炭微电解-Fenton试剂联合氧化深度处理印染废水的研究[J].应用化工,2008,37(9):1074-1076.
[15]吴云,张宏伟,刘迎春.铁炭微电解/Fenton预处理对叔丁酚甲醛树脂合成废水[J].中国给水排水,2009,25(23):88-91.
[16]李德生,谭磊,王宝山.Fenton试剂强化铁炭微电解预处理高浓有机废水[J].中国给水排水,2006,22(17):81-84.
[2]修艳华,李贞玉,李长海.络合萃取技术处理CLT酸废水[J].长春工业大学学报,2005,26(2):96-98.
[3]朱新锋,张乐观.铁炭微电解-Fenton-生物接触氧化法处理土霉素废水[J].水处理技术,2008,2(5):608-610.
[4]李晓艳,王国兴,王如文.络合萃取法处理高浓度CLT酸废水的研究[J].化工环保,2004,24(5):96-98.
[5]潘春玲,路八智,詹朝晖.用电凝聚法预处理CLT酸废水[J].有色金属,2000,52(4):91-94.
[6]潘春玲,张延青,汪靖.电凝聚—二级生化—吸附工艺处理CLT酸废水[J].中国环境科学,2000,20(4):349-352.
[7]NAM S,TRATNYEK P G.Reduction of zeo dyes withzero-valent iron[J].Water Research,2000,34(6):1837-1845.
[8]KEUM Y S,LI Q X.Reduction of nitro aromatic pesti-cides with zero-valent iron[J].Chemosphere,2004,54:255-263.
[9]JOHNSON T L.Knitics of halogenated organic com-pound degradation by iron metal[J].Environ Sci Tech-nol,1996,30:2634-2640.
[10]GHIZLAINE O N,OTURAN M A.Degradation of theherbicide in azapur by Fenton reactions[J].EnvironChem Lett,2004,2:31-33.
[11]陆斌,韦鹤平.内电解强化处理腈纶废水的试验研究[J].同济大学学报,2001,29(11):1294-1298.
[12]王玲.铁炭微电解/Fenton/絮凝工艺预处理高浓度难降解有机废水的研究[D].杭州:浙江工业大学,2010:24-25.
[13]李再兴,杨景亮,邓晓丽.铁炭内电解预处理阿维菌素废水[J].化工环保,2002,22(6):347-349.
[14]姜兴华,刘勇健,金亮基.铁炭微电解-Fenton试剂联合氧化深度处理印染废水的研究[J].应用化工,2008,37(9):1074-1076.
[15]吴云,张宏伟,刘迎春.铁炭微电解/Fenton预处理对叔丁酚甲醛树脂合成废水[J].中国给水排水,2009,25(23):88-91.
[16]李德生,谭磊,王宝山.Fenton试剂强化铁炭微电解预处理高浓有机废水[J].中国给水排水,2006,22(17):81-84.