道南渗析法处理硝酸盐废水研究  

Study on Treatment of Nitrate Wastewater by Donnan Dialysis

作　　者：郝建文[1] 张斌斌 苗紫琦 陶文静 张倩 HAO Jian-wen;ZHANG Bin-bin;MIAO Zi-qi;TAO Wen-jing;ZHANG Qian(School of Environmental and Chemical Engineering,Anhui Vocational and Technical College,Hefei 230011,China;Department of Chemical and Materials Engineering,Hefei University,Hefei 230022,China)

机构地区：[1]安徽职业技术学院环境与化工学院,安徽合肥230011 [2]合肥学院化学与材料学院,安徽合肥230022

出　　处：《宜春学院学报》2021年第9期26-29,74,共5页Journal of Yichun University

基　　金：2019年安徽省高校学科(专业)拔尖人才学术资助项目(项目编号:gxbjZD61);2019年安徽省教育厅自然科学研究重大项目(项目编号:KJ2019ZD069);2016年安徽省高校优秀中青年骨干人才国内外研修重点项目(项目编号:gxfxZD2016335)。

摘　　要：水体中硝酸盐含量超标,不仅会引起水体水质恶化、削减生物多样性、甚至威胁人体健康。如何安全,简捷的脱除水中硝酸盐是目前水体污染治理研究领域的热点之一。道南渗析是一种利用浓度梯度作为一种驱动力的膜分离技术,具有安全、工艺简便等特点。研究利用道南渗析技术处理硝酸盐废水具有必要性。通过分析处理过程中硝酸盐的渗透通量,系统讨论驱动离子性质、浓度、温度和pH对处理过程的影响。不同参数的单因素实验结果表明,驱动物为氯化钠,溶液pH=7,35℃作为操作条件时,硝酸盐的脱除效果最好。Excessive nitrate content in water will not only cause water quality deterioration,reduce biodiversity,and even threaten human health.How to remove nitrate safely and simply is one of the hot spots in the field of water pollution control.Donnan dialysis is a kind of membrane separation technology using concentration gradient as a driving force,which has the characteristics of safety and simplicity.It is necessary to study the treatment of nitrogen-containing wastewater by using Donnan dialysis technology.By analyzing the permeation flux of nitrogen compounds in the treatment process,the effects of driving ion properties,driving ion concentration,temperature and pH on the dialysis process were systematically discussed.The results of single factor experiments with different parameters show that the best removal effect of nitrate is obtained at sodium chloride as driving compound at pH 7 and 35℃.

关 键 词：硝酸盐 道南渗析 膜分离 渗透通量 

分 类 号：X703[环境科学与工程—环境工程]