水厂生物活性炭颗粒灰分的累积规律  

Accumulation Rules for Ash Content of Biological Activated Carbon Granules in WTP

作　　者：李聪聪 刘成[1,2] 刘嘉琪 许展鹏 兰童 陈卫[2] LI Congcong;LIU Cheng;LIU Jiaqi;XU Zhanpeng;LAN Tong;CHEN Wei(Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098

出　　处：《净水技术》2022年第12期65-70,共6页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07403-001)。

摘　　要：文章采用典型水厂跟踪调查与水厂中试试验相结合的方式,分析了水厂生物活性炭使用过程中灰分的累积规律,并分析了其主要成分。研究结果表明,生物活性炭颗粒上的灰分随着使用时间呈现增加的趋势,至10年时可达到25%左右,生物活性炭的类型、炭池流向均会对灰分的累积产生相应的影响。灰分的主要成分包括Al、Fe、Mn、Mg、Cu、硫酸盐、氯离子、磷酸盐等典型元素,其中Al的质量分数最高可达到46.5 mg/(g BAC)以上。灰分的累积对废旧生物活性炭的资源化利用会产生一定的负面影响,后续生物活性炭失效判定过程中应予以充分的重视。The method combined with site survey of typical water treatment plant(WTP) and pilot test was used to analyze the accumulation rules of ash content in the application of biological activated carbon(BAC), the composition of ash was investigated in the meantime. Results showed that ash content of the BAC particles increased with their service time and reached about 25% at the end of 10 years. Both the type of activated carbon and the flow direction of BAC tank influenced the accumulation of ash content. The composition of ash was confirmed preliminary as the metal and nonmetal ion, including Al, Fe, Mn, Mg, sulfate, Cl^(-), phosphate, etc. Al was the highest content element in the BAC particle and the content got to above 46.5 mg/(g BAC). The accumulation of ash content can influence the reutilization of the spent BAC and should be considered as one of factors in the appraisal of the BAC’s inva-lidation.

关 键 词：生物活性炭(BAC) 灰分 无机离子 饮用水 累积规律 水厂 

分 类 号：TU991[建筑科学—市政工程]