气浮-·OH强氧化组合工艺处理高藻水的研究  

Algae-laden water treatment using air flotation combined with advanced oxidation technology

作　　者：洪伟辰 白敏冬[1] 满化林 黄孟斌[1] 李芳[1] 张芝涛[2] 

机构地区：[1]厦门大学海洋生物资源开发利用协同创新中心,厦门大学环境与生态学院,福建厦门361005 [2]大连海事大学环境工程研究所,辽宁大连116026

出　　处：《中国环境科学》2015年第12期3634-3639,共6页China Environmental Science

基　　金：国家科技支撑计划(2013BAC06B01,2013BAC06B02);国家重大科研仪器研制项目(61427804);国家高技术研究发展计划(863计划)(2012AA062609);国家杰出青年科学基金(61025001)

摘　　要：以库区天然水培养的二形栅藻（Scenedesmus dimorphus）为研究对象,利用大气压强电场电离放电产生羟基自由基（·OH）,结合压力溶气气浮前处理工艺处理高藻水.实验结果表明,对于藻密度为65.6×10^4 cells/mL,浊度为10.8NTU,CODMn为6.74mg/L的高藻水,在总氧化剂TRO浓度为1.03 mg/L时,藻类去除效率达到100%;总细菌,总大肠菌群和大肠埃希氏菌均未检出;出水CODMn由1.43 mg/L降至1.25mg/L,降低了10%;浊度由0.66NTU降至0.54NTU,降低了12.59在排放高藻水的主管路中·OH杀藻的接触反应时间仅为6s.因此汽浮-·OH强氧化组合工艺可高效快速地处理高藻水,为保障水源水的供水安全探索了一种新的思路.In this study,an integrated air flotation and advanced oxidation process（AOP） facilitated by ·OH,resulting from strong ionization discharge,was applied to address this problem.For this purpose,natural reservoir water was used to culture Scenedesmus dimorphus to prepare synthetic water laden with algae cells concentration of 65.6×10~4 cells/mL,turbidity of10.8NTU and COD_（Mn） of 6.74mg/L,and the applied TRO dosage of 1.03mg/L.Almost complete removal of algae and bacteria（total bacteria,coli bacteria and E.coli） was achieved within 6s,while the COD_（Mn） of treated water decreased by 10%from1.43mg/L to 1.25mg/L,its turbidity decreased by 12.59%from 0.66 NTU to 0.54 NTU.This suggest that this integrated treatment was effective for treatment of algae-laden wastewater,thus ensuring the safety of water supply.

关 键 词：高藻水 组合工艺 羟基自由基 杀藻 净化水体 

分 类 号：X524[环境科学与工程—环境工程]