水合物法处理实际复杂废水及高盐废水  

Research on the application of hydrate-based method in the treatment of actual complex wastewater and high salt wastewater

作　　者：孙汇莲 孙灵杰 赵杨 孙翔[1] 张伦祥 SUN Huilian;SUN Lingjie;ZHAO Yang;SUN Xiang;ZHANG Lunxiang(Key Laboratory of Ocean Energy Utilization and Energy Conservation of the Ministry of Education,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]大连理工大学海洋能源利用与节能教育部重点实验室,辽宁大连116024

出　　处：《化工进展》2022年第12期6672-6679,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(52020105007,52006024)。

摘　　要：针对复杂废水和高盐废水的处理是目前废水处理领域的难点,常规废水处理技术具有操作复杂、能耗高等问题。本文提出了一种基于水合物处理实际复杂废水及高盐废水的新方法,通过测定水合物分解水中污染物浓度,证实了该技术的可行性。实验中结合中国石化镇海炼化分公司的石油炼化废水和大连市水文局的高浓度实验室废水,在常压、275.15K下进行实验,通过测量水合物法废水处理的脱除效率、产水率及富集因子,评估R141b水合物对废水的处理效果。测定废水处理前后的电导率、总有机碳(TOC)及离子浓度反映对不同种类污染物的去除能力。采用真空抽滤结合离心分离的方法作为后处理方法,提高废水中污染物的脱除效率。结果表明,水合物法废水处理技术可同时去除废水中的无机盐及有机污染物,各污染物的脱除效率可达75%以上,产水量可达78.9%,对高浓度的实验室废水中的铜离子脱除效率达到90.8%。The treatment of complex wastewater and high salt wastewater is the current difficulty in the field of wastewater treatment. The traditional wastewater treatment technology has the disadvantages of complex operation and high energy consumption. An innovative hydrate-based method was proposed in this study to treat actual complex wastewater and high salt wastewater. The feasibility of this technology was confirmed by measuring the concentration of pollutants in purified water through hydrate dissociation.Combined with the petroleum refining wastewater and laboratory wastewater from Sinopec Zhenhai refining & chemical company and Dalian hydrology bureau, the experiment was conducted under atmospheric pressure and 275.15K. The treatment effect of R141b hydrate on wastewater was evaluated by measuring the removal efficiency, water yield, and enrichment factor. The electrical conductivity, total organic carbon and ion concentration before and after treatment were measured to reflect the removal capacity of different kinds of pollutants. Vacuum filtration combined with centrifugal separation was used as the post-treatment method to improve the removal efficiency of pollutants in wastewater. The results showed that the hydrate-based wastewater treatment method can remove inorganic salts and organic pollutants in wastewater simultaneously. The removal efficiency of each pollutant reached more than 75%,with the water yield reaching about 78.9%. For copper ions with high concentrations in laboratory wastewater, the removal efficiency reached 90.8%. The hydrate-based wastewater treatment technology proposed in this study will promote the development of complex wastewater and high salt wastewater treatment.

关 键 词：水合物 脱盐 废水 R141B 高浓度 

分 类 号：X703.1[环境科学与工程—环境工程]