反渗透浓水的活性炭吸附性能研究
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摘要
本文针对椰壳活性炭对于反渗透浓水中COD的吸附性能进行了研究。考察了温度、投加量、接触时间3因素对于反渗透浓水中COD去除率的影响,并讨论了吸附过程及机理;结果表明,接触时间和活性炭投加量对吸附过程影响较大,温度则影响较小。当反应温度为15℃、活性炭投加量为90mg、接触时间为2h时,对于浓水中COD的去除率可以达到41.43%。Freundlich吸附等温线可以较好地描述椰壳活性炭吸附反渗透浓水中COD的吸附行为,相关系数R达到0.997。
引文
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[2]Xu P,Bellona C,Drewes J E.Fouling of nanofiltration and reverse osmosis membranes during municipal wastewater reclamation:Membrane autopsy results from pilot-scale investigations[J].Journal of Membrane Science,2010,353(1-2):111-121.
[3]Al-Rifai J H,Khabbaz H,Sch?fer A I.Removal of pharmaceuticals and endocrine disrupting compounds in a water recycling process using reverse osmosis systems[J].Separation and Purification Technology,2011,77(1):60-67.
[4]T.A.Ternes,A.Joss,Human Pharmaceuticals,Hormones and Fragrances:The Challenge of Micropollutants in Urban Water Management[M].International Water Association,New York,2007.
[5]A.J.Watkinson,E.J.Murby,S.D.Costanzo.Removal of antibiotics in conventional and advanced wastewater treatment:Implications for environmental discharge and wastewater recycling[J].Water Research,2007,41(18):4164–4176.
[6]A.Perez-Gonzalez,A.M.Urtiaga,R.Ibanez,I.Ortiz State of the art and review on the treatment technologies of water reverse osmosis concentrates[J].water research,2012,2(46):267-283.
[7]国家环境保护总局水和废水监测分析方法编委会.水和废水监测分析方法(第四版)[M].北京:中国环境科学出版社,2002.
[8]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 7702-2008煤质颗粒活性炭试验方法[S].2008.
[9]卢宁等.水中高氯酸根的颗粒活性炭吸附过程及影响因素分析[J].环境科学,2008,29(6):1572.