双极膜电渗析资源化巯基乙酸钠废水再生巯基乙酸的研究  

Research of regeneration of thioglycolic acid by bipolar membrane electrodialysis using sodium thioglycolate wastewater as resource

作　　者：张莉[1,2,4] 娄玉峰 张委 刘方旺 蓝靖 赵宗山 付昆明 ZHANG Li;LOU Yufeng;ZHANG Wei;LIU Fangwang;LAN Jing;ZHAO Zongshan;FU Kunming(College of Chemical Engineering,Weifang Key Laboratory of High-Salinity Industrial Wastewater Resource Utilization,Weifang Vocational College,Weifang 262737,China;Shandong Tianwei Membrane Technology Co.,Ltd.,Weifang 261061,China;School of Environmental Science and Engineering,Qingdao University,Qingdao 266071,China;School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]潍坊职业学院化学工程学院,潍坊市高盐工业废水资源化重点实验室,山东潍坊262737 [2]山东天维膜技术有限公司,山东潍坊261061 [3]青岛大学环境科学与工程学院,山东青岛266071 [4]北京建筑大学环境与能源工程学院,北京100044

出　　处：《无机盐工业》2025年第2期120-129,共10页Inorganic Chemicals Industry

基　　金：国家自然科学基金项目(21976185);国家重点研发计划项目(2021YFB3801400);潍坊市科技发展计划项目(2021GX016);潍坊职业学院首届博士科研基金项目(潍职院教[2021]5号)。

摘　　要：巯基乙酸钠是硫氨酯尾液的主要成分,因其高毒性、高盐、高化学需氧量的特点,使硫氨酯尾液成为一类极难处理的化工生产废水。通常采用萃取、过滤、酸化和蒸馏等复合工艺进行处理,但这种处理方法存在工艺复杂、成本高及可能产生二次污染等问题。为解决巯基乙酸钠废水资源化利用的难题,采用三隔室双极膜电渗析(Bipolar Membrane Electrodialysis Device,BMED)装置,以巯基乙酸钠转化率、电流效率、平均膜对电压及能耗等作为评价指标,考察操作反应时间、反应温度、电流密度、膜间距对BMED资源化巯基乙酸钠废水处理过程的影响。结果表明,在反应时间为75 min、电流密度为400 A/m^(2)、反应温度为40℃、膜间距为50μm的优化运行条件下,BMED的巯基乙酸钠转化率为98.32%,电流效率达到86.01%,生产能耗为93.54kW·h/t。该研究结果可为巯基乙酸钠废水生产巯基乙酸提供新的工艺思路。A lot of sodium thioglycolate as the main constituent of sulfur ammonia ester tail liquid is difficult to treat due to its high toxic,high salinity and high COD(Chemical Oxygen Demand)properties.The traditional disposal composite pro-cess of extraction-filtration-acidification-distillation exsits complex processes,high disposal costs and secondary pollution.In order to solve the resource utilization of sodium thioglycolate wastewater,the bipolar membrane electrodialysis device(BMED)with three-compartment configuration was used,which could convert salts into corresponding acids and bases.The effects of the reaction time,the reaction temperature,current density and plate thickness on the conversion efficiency,cur-rent efficiency,membrane voltage,energy consumption were investigated.The experiments showed that the optimum experi-mental conditions were 75 min,40℃,400 A/m^(2) and 50μm.Under those conditions,the conversion rate of sodium thioglyco-late was up to 98.32%,the current efficiency was 86.01%,and the energy consumption was 93.54 kW·h/t.The results can provide a reference for a new process idea for the production of thioglycolic acid from sodium thioglycolate wastewater in in-dustrial production.

关 键 词：双极膜 电渗析 资源化 巯基乙酸钠废水 巯基乙酸 

分 类 号：TQ028.8[化学工程]