上向流活性炭-超滤组合工艺中臭氧投加的中试优化  

PILOT-SCALE OPTIMIZATION OF OZONE DOSAGE IN UP FLOW ACTIVATED CARBON-ULTRAFILTRATION COMBINED PROCESS

作　　者：武珉辉 刘爽 钱灏 王铮 WU Min-hui;LIU Shuang;QIAN Hao;WANG Zheng(Shanghai National Engineering Research Center of Urban Water Resources Co.,Ltd,Shanghai 200082,China;College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海城市水资源开发利用国家工程中心有限公司,上海200082 [2]同济大学环境科学与工程学院,上海200082

出　　处：《环境工程》2021年第10期72-77,共6页Environmental Engineering

基　　金：上海市优秀学术/技术带头人计划资助(19XD1430800);上海市“超级博士后”资助(2019256)。

摘　　要：为优化上向流活性炭-超滤组合工艺水厂中臭氧的投加,设计中试试验研究了臭氧投加量改变对各处理单元运行效果的影响,并利用Central Composite响应面设计研究了臭氧投加量对中试工艺去除TOC及三卤甲烷生成势(THMFP)的影响规律,同时简单分析了该中试工艺对金泽原水中常见微污染物的去除率。结果表明:过高的前置臭氧投加量不利于混凝沉淀单元对浊度、UV_(254)及耗氧量的去除,过高的后置臭氧投加量不利于活性炭单元对UV;及耗氧量的去除。针对金泽原水TOC及THMFP的去除,优化后的中试工艺臭氧投加量为:前置臭氧投加量为0.6~0.65 mg/L,后置臭氧投加量为1.35~1.4 mg/L。在中试研究的臭氧投加量范围内,该中试工艺对金泽原水中常见抗生素及除1,4-二氯苯、乙苯外的致嗅物质均有很好的去除效果。In order to optimize the ozone dosage in an up flow activated carbon-ultrafiltration combined process for the water works,pilot-scale experiments were conducted to study the impact of ozone dosages on the processing efficiency of each unit,and the central composite response surface design was adopted to study the effect of ozone dosage on TOC and trihalomethane formation potential(THMFP),meanwhile,the removal efficiency of typical odor compounds and antibiotics in Jinze Reservoir was also analyzed.The results showed that excessively high pre-ozone dosage was not conducive to the removal of turbidity,UV_(254) and COD_(Mn) in the coagulatory settler,while exceedingly high post-ozone dosage was not conducive to the removal of UV_(254) and COD_(Mn) in the activated carbon filter.For the removal of TOC and THMFP in Jinze Reservoir,the optimized ozone dosage range was 0.6~0.65 mg/L and 1.35~1.4 mg/L for the pre-ozone and post-ozone dosage,respectively.Moreover,the pilot-scale process was highly effective in removing typical antibiotics and odor compounds except 1,4-dichlorobenzene and ethylbenzene in Jinze reservoir.

关 键 词：臭氧氧化 臭氧投加量 上向流活性炭池 混凝沉淀池 

分 类 号：TU991.2[建筑科学—市政工程]