臭氧-超声联用处理聚乙烯醇废水  

Treatment Research of Polyvinyl Alcohol Wastewater by Ozone/Ultrasound Oxidation Process

作　　者：董德明[1] 曹珍[1] 闫征楚 花修艺[1] 朱磊[1] 徐阳 郭志勇[1] 梁大鹏[1] 

机构地区：[1]地下水资源与环境教育部重点实验室/水资源与水环境吉林省重点实验室/吉林大学环境与资源学院,长春130012

出　　处：《吉林大学学报（地球科学版）》2016年第4期1191-1198,共8页Journal of Jilin University：Earth Science Edition

基　　金：国家科技重大专项(2012ZX07202-009);吉林省科技攻关计划重点项目(20140204035SF)~~

摘　　要：本研究采用臭氧-超声(O3/US)联用技术处理聚乙烯醇(PVA)废水,分别考察了PVA初始质量浓度、初始pH、臭氧通入速率、超声功率、超声频率及反应时间对PVA和COD去除效率的影响,并在此基础上通过正交实验确定了降解PVA和COD的最佳实验条件。研究结果表明,超声频率对去除率有显著影响,PVA初始质量浓度对去除效率的影响较大,反应时间、超声功率、臭氧通入速率和初始pH的影响相对较小。通过影响实验和正交实验确定的最佳降解条件为:PVA初始质量浓度100mg/L、初始pH=9、臭氧通入速率4g/h、超声功率320 W、超声频率40kHz、反应时间20min,此时COD和PVA的去除效率分别为86.4%和99.3%。超声对臭氧降解聚乙烯醇废水具有明显的协同作用,在最佳条件下,臭氧-超声联用技术比单独臭氧技术对PVA的去除率增加了5.1%,对COD去除率增加了19.4%。The present work investigates the treatment of polyvinyl alcohol（PVA）wastewater by using ozone/ultrasound（US）oxidation process.The effects of initial PVA mass concentration,the flow rate of ozone,initial pH,ultrasonic power,ultrasonic frequency,and raction time have been studied.The optimal treatment conditions for PVA and COD removal were obtained using orthogonal experiments.The results showed that ultrasonic frequency has a remarkable influence on the removal efficiency,the initial PVA mass concentration plays an important role,while reaction time,ultrasonicpower,the flow rate of ozone and initial pH have minor effects in order.The maximum removal of COD and PVA could be reached under the following conditions：initial PVA mass concentration was 100mg/L,initial pH was 9,ozone dosage was 4g/h,ultrasonic power was 320 W,ultrasonic frequency was 40 kHz,and the reaction time was 20 minutes.Under these conditions,the removal efficiency of COD and PVA was 86.4%and 99.3%,respectively.Compared O3 with O3/US,different types of technology were operated at the same final condition to show the difference between them,the PVA removal efficiency of O3/US was 5.1% higher than O3,the COD removal efficiency of O3/US was 19.4% higher than that with the treatment of only O3 under the same optimal conditions.

关 键 词：臭氧 超声 聚乙烯醇废水 影响因素 降解 

分 类 号：X131.2[环境科学与工程—环境科学]