某水厂V型滤池初滤水排放控制技术研究
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摘要
《室外给水设计规范》(GB 50013—2006)对初滤水的排放提出了要求,但对于初滤水排放时间、排放方式等相关内容未提出具体要求,实际很多水厂未设计初滤水排放设施或未合理排放初滤水。以扬州某水厂V型滤池实际生产数据为例,对影响初滤水水质的因素进行分析,对初滤水排放过程中浊度、颗粒数、UV_(254)、COD_(Mn)和菌落总数等参数的变化规律进行了研究,并从经济和安全性的角度提出初滤水排放时间控制在2～5 min较为合适,滤池进水浊度较高时宜取上限。
The Code for Design of Outdoor Water Supply Engineering (GB 50013-2006)regulates the removal of initial filtrated water,but it is lack of specific requirements on the discharge time or other design parameters of the initial filtrated water. In fact,the initial filtrated water discharge design or control devices are absent in many waterworks. Taking the actual production data of the V-type filter from a waterworks in Yangzhou as an example,the parameters affecting the quality of initial filtrated water were analyzed. The variations of turbidity,particle count,UV_(254),COD_(Mn) and total bacterial colony number in the process of initial filtrated discharge were studied. From economy and safety perspectives,it was appropriate to control the discharge time of initial filtrated water in 2-5 minutes,and the upper limit should be taken when the turbidity of the inlet water of the filter was high.
The Code for Design of Outdoor Water Supply Engineering (GB 50013-2006)regulates the removal of initial filtrated water,but it is lack of specific requirements on the discharge time or other design parameters of the initial filtrated water. In fact,the initial filtrated water discharge design or control devices are absent in many waterworks. Taking the actual production data of the V-type filter from a waterworks in Yangzhou as an example,the parameters affecting the quality of initial filtrated water were analyzed. The variations of turbidity,particle count,UV_(254),COD_(Mn) and total bacterial colony number in the process of initial filtrated discharge were studied. From economy and safety perspectives,it was appropriate to control the discharge time of initial filtrated water in 2-5 minutes,and the upper limit should be taken when the turbidity of the inlet water of the filter was high.
引文
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[5]Ribas F,Bernal A,Perramon J.Elimination of Giardia systs,Cryptosporidium oocysts,turbidity and particles in a drinking water treatment plant with clarification and double filtration[J].Water Sci Technol,2000,41(7):203-211.
[6]Huck P M,Coffey B M,Anderson W B,et al.Using turbidity and particle counts to monitor Cryptosporidium removals by filters[J].Water Supply,2002,2(3):65-71.
[7]王东升,陈勇生.在线激光颗粒计数仪在水处理中的应用[J].中国给水排水,2003,19(9):29-31.Wang Dongsheng,Chen Yongsheng.Application of online laser particle counter in water treatment[J].China Water&Wastewater,2003,19(9):29-31(in Chinese).
[8]冯硕,张晓健,陈超,等.炭砂滤池反冲洗及初滤水浊度控制方式研究[J].中国给水排水,2011,27(1):52-54,57.Feng Shuo,Zhang Xiaojian,Chen Chao,et al.Study on backwash methods and initial filtered water turbidity control of GAC-sand filters[J].China Water&Wastewater,2011,27(1):52-54,57(in Chinese).
[2]Amburgey J E.Optimization of the extended terminal subfluidization wash(ETSW)filter backwashing procedure[J].Water Res,2005,39(2/3):314-330.
[3]杨艳玲,李星,刘美洲,等.用颗粒计数和浊度联合评价颗粒物去除作用[J].北京工业大学学报,2007,33(11):1199-1202.Yang Yanling,Li Xing,Liu Meizhou,et al.Evaluation on particle removal effect with combination of particle counting and turbidity[J].Journal of Beijing University of Technology,2007,33(11):1199-1202(in Chinese).
[4]黄小红,周圣东,王海湧,等.活性炭滤池中颗粒物数量和粒径分布的研究[J].供水技术,2013,7(1):18-21.Huang Xiaohong,Zhou Shengdong,Wang Haiyong,et al.Particle amount and particle size distribution in activated carbon filter[J].Water Technology,2013,7(1):18-21(in Chinese).
[5]Ribas F,Bernal A,Perramon J.Elimination of Giardia systs,Cryptosporidium oocysts,turbidity and particles in a drinking water treatment plant with clarification and double filtration[J].Water Sci Technol,2000,41(7):203-211.
[6]Huck P M,Coffey B M,Anderson W B,et al.Using turbidity and particle counts to monitor Cryptosporidium removals by filters[J].Water Supply,2002,2(3):65-71.
[7]王东升,陈勇生.在线激光颗粒计数仪在水处理中的应用[J].中国给水排水,2003,19(9):29-31.Wang Dongsheng,Chen Yongsheng.Application of online laser particle counter in water treatment[J].China Water&Wastewater,2003,19(9):29-31(in Chinese).
[8]冯硕,张晓健,陈超,等.炭砂滤池反冲洗及初滤水浊度控制方式研究[J].中国给水排水,2011,27(1):52-54,57.Feng Shuo,Zhang Xiaojian,Chen Chao,et al.Study on backwash methods and initial filtered water turbidity control of GAC-sand filters[J].China Water&Wastewater,2011,27(1):52-54,57(in Chinese).