低投量下臭氧预氧化对常规工艺运行的影响  

Impacts of low-dosage ozone pre-oxidation on conventional water treatment process

作　　者：王永京[1,2] 于建伟[2] 张君枝[3] 

机构地区：[1]北京工商大学食品学院环境科学与工程系,北京100045 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [3]北京建筑大学北京应对气候变化研究和人才培养基地,北京100044

出　　处：《给水排水》2015年第9期9-14,共6页Water & Wastewater Engineering

基　　金：国家科技支撑计划(2014BAC27B00);北京工商大学青年基金(QNJJ2014-12);青年教师创新团队项目(PXM2013_014213_000106)

摘　　要：利用中试系统研究了北方某水库水质条件下,较低投量的臭氧预氧化对常规饮用水处理工艺运行效果的影响。研究发现预臭氧的加入提高了常规工艺对CODMn、UV254、三卤甲烷生成势(THMFP)的总去除率。同时,能够明显改善滤池过滤性能,低臭氧投量(≤1.0mg/L)条件下,砂滤周期可从22h延长至48h左右,且投量0.5mg/L以下时,延长效率较高。预臭氧的加入强化了不同粒径范围内颗粒物在混凝沉淀、砂滤各工艺段的去除,是砂滤运行周期得到延长的原因。Through pilot study,this paper studied the impacts of low-dosage ozone pre-oxidation on conventional water treatment process with the raw water from a reservoir in north China.The results showed that ozone pre-oxidation improve the total removal on CODMn,UV254 and THMFP of conventional water treatment process.Meanwhile,it could improve the performance of filter greatly.Under the condition of low ozone dosage（≤1.0mg/L）,the filter cycle time could increase from 22 hours to 48hours;in addition,if the dosage of ozone was below 0.5mg/L,the cycle time extension would be longer.The ozone pre-oxidation could enhance the removal of particles with different diameters in coagulation-sedimentation and sand filter,which might be the reason for sand filter cycle time extension.

关 键 词：饮用水 臭氧预氧化 砂滤周期 水头损失 颗粒物 有机物去除 

分 类 号：TU991.22[建筑科学—市政工程]