多效膜蒸馏技术处理电镀废水反渗透浓水的研究  

Study on Treatment of Reverse Osmosis Brine Generated in Electroplating Wastewater by Multi-effect Membrane Distillation Technology

作　　者：靳辉[1] 朱海霖[1] 郭玉海[1] 张华鹏[1] 金王勇 吴益尔[1] 

机构地区：[1]浙江理工大学丝纤维材料和加工技术浙江省重点实验室,杭州310018 [2]浙江东大环境工程有限公司,浙江诸暨311800

出　　处：《浙江理工大学学报（自然科学版）》2016年第4期528-532,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家科技支撑计划(2013BAC01B01);国家高技术研究发展计划(863计划;2013AA065003);国家自然科学基金项目(21406207)

摘　　要：采用自主搭建的PT FE多效膜蒸馏装置对电镀反渗透浓水进行浓缩处理，研究热料液进口温度、冷料液进口温度和料液流量等对多效膜蒸馏中的产水通量、造水比和产水指标的影响，并对电镀反渗透浓水进行深度浓缩试验。结果表明：随着热料液进口温度的增加，产水通量和造水比均增大；随着冷料液进口温度的增加和料液流量的减小，产水通量减小但造水比增大。深度浓缩实验结果表明：当电镀反渗透浓水浓缩至8倍时，产水的电导率、COD、浊度和色度分别保持在50μs ·cm －1、15mg· L －1、2N T U和15倍以下，脱盐率、CODCr 、浊度和色度的去除率均保持在99％以上，均达到国家污水综合排放二级标准。Self‐set PTFE multi‐effect membrane distillation device was applied to treat reverse osmosis （RO） brine generated in electroplating waste‐water to study the effect of hot feed temperature ,cool feed temperature and feed flow rate on permeate flux ,gain‐out ratio （GOR） and permeate indexes .Besides ,the deeply concentrating RO brine generated in electroplating waste‐water was studied . The results show that the permeate flux and GOR increase with the increase of hot feed temperature .With the increase of cool feed temperature and the decrease of feed flow rate ,the permeate flux decreases but GOR increases .The results of deeply concentrating RO brine generated in electroplating waste‐water show that when the concentrate times reaches 8 ,the conductivity ,COD , turbidity and chroma of permeate keep below 50 μs · cm‐1 、11 mg · L‐1 ,2NTU and 15 times ,respectively .The salt removing rate , CODCr , turbidity and color removing rate keep above 99% and reach national second‐level standard of waste‐water discharge .

关 键 词：多效膜蒸馏 电镀反渗透浓水 产水通量 造水比 

分 类 号：X781.1[环境科学与工程—环境工程]