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.
出处
《给水排水》
CSCD
北大核心
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)
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
Drinking water
Ozone pre-oxidation
Sand filter cycle time
Head loss
Particle
Organic matter removal
