高浓度含酚有机废水络合萃取试验  

Experiment on Complexation Extraction of Organic Wastewater Containing High Concentration Phenol

作　　者：赵宗祺 王超 李团结 李宝丰 于鹏飞 周铭强 ZHAO Zongqi;WANG Chao;LI Tuanjie;LI Baofeng;YU Pengfei;ZHOU Mingqiang(Qingdao Haibohe Wastewater Treatment Plant,Qingdao 266000,China;Qingdao Drainage Operation Service Center,Qingdao 266000,China;Qingdao Tuandao Wastewater Treatment Plant,Qingdao 266000,China;Qingdao Runshui Municipal Engineering Co.,Ltd.,Qingdao 266000,China;Qingdao Administrative Service and Public Resources Trading Center,Qingdao 266032,China;Qingdao Energy Thermal Power Group Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]青岛市海泊河污水处理厂,山东青岛266000 [2]青岛市排水运营服务中心,山东青岛266000 [3]青岛市团岛污水处理厂,山东青岛266000 [4]青岛润水市政工程设计有限公司,山东青岛266000 [5]青岛市政务服务和公共资源交易中心,山东青岛266032 [6]青岛能源热电集团有限公司,山东青岛266000

出　　处：《净水技术》2022年第11期102-107,共6页Water Purification Technology

基　　金：山东省重大科技创新工程(2019JZZY010511)。

摘　　要：针对高浓度含酚有机废水成分复杂、酚类物质浓度高、生物毒性大以及难生物降解的特点,使用复合萃取剂FCQ-2对高浓度含酚有机废水进行络合萃取处理试验,考察了萃取剂类型、油/水相比、废水pH、萃取温度和萃取时间对酚类物质萃取率的影响。结果表明:在萃取剂类型为FCQ-2、油/水相体积比为1∶2、废水pH值为4、萃取温度为30℃以及萃取时间为30 min的试验条件下,络合萃取试验对目标含酚有机废水中酚类物质的萃取率可以达到96.1%,萃取效率较高。采用NaOH溶液作为碱液,对萃取试验后的富含酚类物质的有机溶液开展了反萃取试验,当碱液的质量分数为12%、油相/碱液体积比为1∶2、反萃取时间为30 min以及反萃取次数为3次时,酚类物质的反萃取率可以达到96.7%,酚类物质回收率较高,处理效果较好。According to the characteristics of complex components, high concentration of phenols, high biological toxicity and difficult biodegradation of organic wastewater containing high concentration phenol, the complexation extraction experiment of high concentration phenol containing organic wastewater was carried out with composite extractant FCQ-2. The effects of extractant type, oil/water ratio, wastewater pH, extraction temperature and extraction time on the extraction rate of phenols were investigated. The results showed that under the experimental conditions of the type of extractant FCQ-2, the oil/water phase volume ratio of 1∶2, the pH value of wastewater was 4, the extraction temperature was 30 ℃ and the extraction time was 30 min, the extraction rate of phenols in the target phenolic organic wastewater could reach 96.1%, and the extraction efficiency was higher. NaOH solution was used as alkali solution to carry out the back extraction experiment on the organic solution rich in phenols after the extraction experiment. When the mass fraction of alkali solution was 12%, the oil phase/alkali solution volume ratio was 1∶2, the back extraction time was 30 min and the back extraction times were 3 times, the back extraction rate of phenols could reach 96.7%, the recovery rate of phenols was higher and the treatment effect was good.

关 键 词：高浓度含酚有机废水 络合萃取 萃取剂 反萃取 工艺参数 

分 类 号：X703[环境科学与工程—环境工程]