臭氧纳米气泡对水中三价砷的氧化效果  

Effect of Ozone Nanobubbles on Trivalent Arsenic Oxidation in Water

作　　者：刘汝鹏 刘亚敏 刘丽丽 孙翠珍[1] LIU Rupeng;LIU Yamin;LIU Lili;SUN Cuizhen(School of Municipal&Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;Resources and Environment Innovation Institute,Shandong Jianzhu University,Jinan 250101,China;Shandong Qixing Garden Construction Co.,Ltd.,Weifang 261000,China;Shandong Shuifa Municipal Construction Co.,Ltd.,Jinan 250001,China)

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]山东建筑大学资源与环境创新研究院,山东济南250101 [3]山东七星园林建设有限公司,山东潍坊261000 [4]山东水发市政建设有限公司,山东济南250001

出　　处：《净水技术》2021年第2期107-110,共4页Water Purification Technology

基　　金：住房和城乡建设部科学技术计划(UDC2018031512)。

摘　　要：砷污染防治技术,将三价砷[As(Ⅲ)]先氧化成五价砷[As(Ⅴ)]是保证治理效果的必要手段。文中为了提高臭氧氧化效果,将臭氧以纳米气泡(NBs)的形式通入水中。在不同As(Ⅲ)初始浓度、不同pH下,NBs系统对As(Ⅲ)氧化率均远远高于臭氧大气泡系统,最高可达96.5%[对应As(Ⅲ)初始浓度为0.2mg/L],比大气泡系统提高了44.47%。NBs系统对As(Ⅲ)的氧化率随初始浓度的增大而有略微提高。溶液初始pH值为3、9时,NBs系统对As(Ⅲ)的最高氧化率达95.1%、94.2%,高于pH值为7时的氧化率;碳酸根离子对臭氧大气泡和NBs系统均具有一定的促进作用,添加了碳酸钠的NBs系统对As(Ⅲ)的氧化率达97.8%,比未添加药剂的系统提高了1.8%。It is necessary in arsenic removal that trivalent arsenic[As(Ⅲ)]is peroxidated to pentavalent arsenic[As(Ⅴ)]for controlling arsenic pollution.In this paper,ozone nanobubbles technology was used to improve the utilization of ozone.At different initial As(Ⅲ)concentrations and different pH value,oxidation rate of As(Ⅲ)in NBs system was much higher than that of large ozone bub-ble system.When the initial As(Ⅲ)concentration was 0.2 mg/L,oxidation rate of As(Ⅲ)in NBs system was increased by 44.47%to 96.5%.In addition,the oxidation rate was slightly increased with the increase of the initial concentration.When the initial pH value of the solution was 3 or 9,the highest oxidation rate of As(Ⅲ)in NBs system reached 95.1%,94.2%,higher than that of pH value of 7.Carbonate ions had a certain promoting effect on ozone NBs and large bubble systems.In NBs system with sodium carbonate,oxidation rate of As(Ⅲ)reached 97.8%,which was increased by 1.8%,comparing with that of the system without adding sodium carbonate.

关 键 词：臭氧 纳米气泡 砷 预氧化 影响因素 

分 类 号：X505[环境科学与工程—环境工程]