电去离子法去除水中硝酸盐电流效率的实验研究  

EXPERIMENTAL STUDY OF ELECTRODEIONIZATION CURRENT EFFICIENCY ON WATER NITRATE REMOVAL

作　　者：花莉[1] 胡阳阳[1] 张庚[1] 

机构地区：[1]陕西科技大学源与环境学院,陕西西安710021

出　　处：《水处理技术》2014年第9期66-69,共4页Technology of Water Treatment

基　　金：国家自然科学基金项目(41003042);陕西省2013年大学生创新项目(1060)

摘　　要：为了明确电去离子(EDI)技术与各影响因子的关系,并通过控制影响因子来实现电去离子设备的电流效率最大化,出水超达标化的目的。在改进后的电去离子设备上使用正交设计实验,最终在6个因素中挑选出进水流量、电压、进水NO3--N的质量浓度、极水NO3--N的质量浓度4个显著性因素,并进行了验证性实验。结果显示,电流效率提高到了70%以上,NO3--N去除效率也达到了98%以上,且出水NO3--N的质量浓度小于2 mg/L,远远低于GB 5749-2006的标准限值,达到了预期目的。In order to define the relationship between electrodeionization and each influencing factor, realize the current efficiency maximization of electrodeionization equipment by controlling the impacting factors and reach the drinking water standard, orthogonal design experiments were adopted on modified electrodeionization equipment. Four significant factors （water flow rate, voltage, influent mass concentration of NO3-N, the electrode-water mass concentration of NO3-N） and the confirmatory tests were carried out. The results indicated that the current efficiency increased up to more than 70%, and removal efficiency also reached up to more than 98%. The mass concentration of NO3-N in treated water was less than 2 mg/L, far lower than the GB 5749--2006, which achieved intended purpose.

关 键 词：电去离子(EDI) 正交实验 电流效率 硝酸盐 

分 类 号：X703.1[环境科学与工程—环境工程]