电渗析浓缩垃圾焚烧飞灰水洗废水研究  

Study on Electrodialysis Concentration of Waste Incineration Fly Ash Washing Wastewater

作　　者：田生来 雷鸣[1] 张少飞 袁俊生[1,2,3] TIAN Shenglai;LEI Ming;ZHANG Shaofei;YUAN Junsheng(Hebei University of Technology,Tianjin 300130,China;Engineering Research Center of Seawater Utilization of Ministry of Education,Tianjin 300130,China;Quanzhou Normal University,Quanzhou 362000,China)

机构地区：[1]河北工业大学,天津300130 [2]海水资源高效利用化工技术部教育部工程研究中心,天津300130 [3]泉州师范学院,福建泉州362000

出　　处：《水处理技术》2022年第4期128-132,136,共6页Technology of Water Treatment

基　　金：国家重点研究发展计划(2016YFB0600504);河北省自然科学基金(B2017202246,E2020202020);教育部创新团队发展计划(IRT14R14);河北省现代海洋化工技术协同创新中心(冀教科[2013]37号);泉州市科技计划项目(2019C109)。

摘　　要：采用间歇电渗析法和连续电渗析法对去除重金属后的垃圾焚烧飞灰水洗废水中KCl、CaCl_(2)、NaCl等混盐进行浓缩工艺的研究,考察了电压、水洗废水温度、补料流量、水洗废水盐含量等因素对电渗析浓缩过程中混盐质量浓度、混盐回收率以及膜堆单位能耗的影响。结果表明,电压、温度、补料流量、水洗废水盐含量影响较大。在电压为12 V,水洗废水温度为25 ℃,补料流量为5 L/h、水洗废水盐含量46.70 g/L条件下,浓缩后水洗废水中的混盐质量浓度从46.70 g/L浓缩至187.29 g/L,混盐回收率为50.53%,膜堆单位能耗为170.79 kWh/t_(混盐),表现出了良好的盐浓缩性能。Intermittent electrodialysis and continuous electrodialysis were used to study the concentration process of KCl, CaCl_(2), NaCl and other mixed salts in municipal solid waste incineration fly ash washing wastewater after heavy metal removal. The effects of voltage, washing wastewater temperature, feed flow rate, and salt content of washing wastewater on the mass concentration of mixed salt, the recovery rate of mixed salt, and the unit energy consumption of membrane reactor in the process of electrodialysis concentration was investigated. The results show that voltage,temperature, feed flow rate, and salt content of washing wastewater have a great influence. Under the voltage is 12 V, the temperature of washing wastewater is 25 ℃, the feed flow rate is 5 L/h, and the salt content of washing wastewater is 46.70 g/L, the mass concentration of mixed salt in the washing wastewater was concentrated from 46.70 g/L to 187.29 g/L, and the recovery rate of mixed salt was 50.53%. The unit energy consumption of the membrane reactor is 170.79 kWh/t mixed salt, which shows a good salt concentration performance.

关 键 词：电渗析 垃圾焚烧飞灰 水洗废水 浓缩 

分 类 号：X703[环境科学与工程—环境工程]