高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (7): 20250039.doi: 10.7503/cjcu20250039

• 环境化学 • 上一篇    下一篇

“电渗析+反渗透”双膜法资源化处理偏二甲肼高盐废水

薛林勇1, 朱和林2, 张念1, 吴延楠1, 杨振邈1, 魏晨杰1(), 刘立芬1()   

  1. 1.浙江工业大学化学工程学院,杭州 310014
    2.开源环境科技集团有限公司,杭州 311200
  • 收稿日期:2025-02-14 出版日期:2025-07-10 发布日期:2025-04-21
  • 通讯作者: 刘立芬 E-mail:cjwei@zjut.edu.cn;lifenliu@zjut.edu.cn
  • 作者简介:魏晨杰, 女, 博士, 副教授, 主要从事膜分离技术的研究及应用. E-mail: cjwei@zjut.edu.cn
    第一联系人:共同第一作者.
  • 基金资助:
    浙江省自然科学基金-联合基金-联合重点项目(LHZ22E080004);浙江省“尖兵领雁+X”科技计划项目(2025C02241)

Recycling Treatment of Unsymmetrical Dimethylhydrazine High-salinity Wastewater via "Electrodialysis+Reverse Osmosis" Double Membrane Processes

XUE Linyong1, ZHU Helin2, ZHANG Nian1, WU Yannan1, YANG Zhenmiao1, WEI Chenjie1(), LIU Lifen1()   

  1. 1.College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China
    2.Kaiyuan Environmental Technology Group Co. ,Ltd. ,Hangzhou 311200,China
  • Received:2025-02-14 Online:2025-07-10 Published:2025-04-21
  • Contact: LIU Lifen E-mail:cjwei@zjut.edu.cn;lifenliu@zjut.edu.cn
  • Supported by:
    the Natural Science Foundation Joint Key Project of Zhejiang Province, China(LHZ22E080004);the "Jianbing-Lingyan+X" Science and Technology Program of Zhejiang Province, China(2025C02241)

摘要:

偏二甲肼(UDMH)是导弹、 卫星和飞船发射试验以及运载火箭的主体燃料, 其生产的废水中含有高浓度盐、 碱及UDMH, 若直接排放会导致水体、 土壤污染, 严重危害人类健康. 本文设计了一种“电渗析+反渗透”双膜法对偏二甲肼高盐废水进行资源化处理, 首先, 采用电渗析对偏二甲肼废水中的盐、 碱等无机物杂质进行脱除, 之后利用反渗透进行浓缩, 从而实现偏二甲肼的高纯度回收, 同时考察了离子交换膜、 操作电压、 料液流量对电渗析脱盐过程的影响规律, 并优化了反渗透浓缩过程的工艺. 结果表明, 电渗析过程对废水中盐、 碱的去除率高达98.6%, 而偏二甲肼的损失率则低于13.5%, 其电流效率为53.1%, 过程能耗约1.02 kW·h/kg; 反渗透过程可将偏二甲肼浓缩浓度从1.1 g/L浓缩至6.3 g/L, 浓缩倍率高达5.6倍, 达到了偏二甲肼回收的要求.

关键词: 偏二甲肼高盐废水, “电渗析+反渗透”双膜法, 资源化处理, 偏二甲肼高纯度回收

Abstract:

Unsymmetrical dimethylhydrazine(UDMH) is the main fuel for missile, satellite and spacecraft launch tests as well as carrier rockets. Its production wastewater contains high concentrations of salt, alkali and UDMH. Direct discharge of the UDMH wastewater can cause water and soil pollution, seriously endangering human health. Therefore, this paper designed a kind of “electrodialysis+reverse osmosis” double membrane processes for recycling treatment of the high salinity UDMH wastewater. Firstly, the electrodialysis(ED) was used to remove the impunities of salt and base in the wastewater, and then the reverse osmosis(RO) was carried out to further concentrate the desalinated wastewater for the highly purified recovery of UDMH. Meanwhile, the influences of ion exchange membrane, operating voltage and feed liquid flow rate on desalination process of ED were investigated, and the concentration technique of reverse osmosis process was also optimized. The research results showed that the electrodialysis process can remove 98.6% of NaCl and base(NaOH, ect.), the loss rate of UDMH is less than 13.5%, the current efficiency can reach 53.1%, and the process energy consumption is about 1.02 kW·h/kg. The concentration of UDMH is concentrated from 1.1 g/L to 6.3 g/L, and the concentration ratio of UDMH is about 5.6 times, which meets the reuse requirement of UDMH.

Key words: High-salinity unsymmetrical dimethyl hydrazine wastewater, “Electrodialysis+reverse osmosis” double membrane process, Recycling treatment, Highly purified recovery of unsymmetrical dimethylhydrazine(UDMH)

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