常规-臭氧活性炭工艺对南方典型受咸潮影响原水处理效能分析  

Analysis on treatment efficiency of conventional process and ozone activated carbon process on typical salt tide affecting raw water in South of China

作　　者：赫俊国 何卓义 李晓斌 郑祥杰 江伟勋 肖克勤 HE Junguo;HE Zhuoyi;LI Xiaobin;ZHENG Xiangjie;JIANG Weixun;XIAO Keqin(School of Civil Engineering»Guangzhou University,Guanzhou 510000,China;Yungjiang Water Group Co.,Ltd.,Yangjiang 529599,China)

机构地区：[1]广州大学土木工程学院,广州510000 [2]阳江市水务集团有限公司,阳江529599

出　　处：《给水排水》2022年第4期6-12,共7页Water & Wastewater Engineering

摘　　要：针对广东某沿海地区周期性咸潮入侵引起的原水中有机物、氨氮和溴离子浓度升高的问题,以处理后水质满足《生活饮用水卫生标准》(GB 5749-2006)为目标,在实际水厂内开展试验研究,分析原水水质特性,研究常规-臭氧活性炭工艺处理不同水质时期原水的效果,优化工艺运行参数.结果表明:原水分为常规、咸潮轻度污染、咸潮重度污染三个时期;在常规原水水质条件下,工艺出水浊度为0.09~0.12 NTU,COD_(Mn)为1.84~2.17 mg/L,氨氮为0.39~0.46 mg/L;在咸潮轻度污染原水水质下,砂滤池滤速8.0 m/h,臭氧单点投加量1.5 mg/L,臭氧接触时间8 min,炭滤池炭床停留时间10 min时,出水COD_(Mn)≤1.01 mg/L、氨氮≤0.41 mg/L;在咸潮重度污染原水水质下,炭滤池停留时间15 min时,出水COD_(Mn)≤2.75 mg/L、氨氮≤0.46 mg/L.受咸潮顶托,溴离子浓度在173~241μg/L,臭氧投加量控制在2.2 mg/L以下时,工艺出水溴酸盐≤10μg/L.Response to the problem of high organics,high ammonia nitrogen and bromine ion elevation in raw water caused by periodic saltwater invasion in a coastal area of Guangdong,expriment was carried out in actual water treatment plants,aiming at the water quality meeting the Standards for dringking water quality(GB 5749-2006)after treatment.The raw water quality characteristics was analyzed,the performance of convention treatment process and ozone-activated carbon process on treating raw water in different water quality periods were studied,and the process operation parameters were optimized.The results show that,the raw water in this area can be divided into three stages:Conventional,Slightly polluted and Severely polluted saw water.Under conventional conditions,the water indexes are as follows:turbidity range from 0.09 to 0.12 NTU,COD_(Mn) range from 1.84 to 2.17 mg/L and ammonia nitrogen range from 0.39 to 0.46 mg/L.When salt water intused slightly,Using the following parameters:the filtering rate 8.0 m/h,single-stage ozone dosage 1.5 mg/L,ozone time 8 min and residence time of activated carbon filter 10 min,the COD_(Mn) was lower than 1.01 mg/L and ammonia nitrogen is lower than 0.41 mg/L in treated water;Under severe salt tide pollution,extending residence time of activated carbon filter to 15 min,the COD_(Mn) and ammonia nitrogen in treated water were lower than 2.75mg/L and 0.46 mg/L.The concentration of bromine ion range from 1.73 to 2.41 mg/L while saltwater intusing.When ozone dosage is controlled below 2.0 mg/L,bromatate of treated water can be guaranteed to be less than 9μg/L.

关 键 词：原水 咸潮入侵 常规处理 臭氧活性炭 参数优化 

分 类 号：TU991[建筑科学—市政工程]