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针对嵊州市第一水厂虹吸滤池运行过程中存在反冲洗不彻底、过滤周期短、反冲洗耗水量大等问题,将虹吸滤池改造为恒水位恒速过滤的气水反冲洗均质滤料滤池,可实现全自控运行,将清水出水方式由敞开改为封闭,提升了供水的安全性。介绍了该改造工程的设计方案、设备改造、施工措施及改造后运行效果,可实现在负荷4.5万m3/d,滤前水浊度2~3NTU时,滤后水浊度达到0.1~0.2NTU,过滤周期大于48h。
In the process of siphon filter in Shengzhou No.1 Waterworks, there is a problem that the backwashing is not complete, the filter cycle is short, the backwash water consumption is large and so on, and the siphon filter is transformed into a constant water-filtered backwater homogenizer Material filter, can achieve full-automatic operation, the water from the open water way to closed to enhance the safety of water supply. The design scheme, equipment reconstruction, construction measures and operation results after the transformation are introduced. The turbidity of the filtered water reaches 0.1 ~ 0.2NTU under the load of 45,000m3 / d and the pre-filtration water turbidity of 2 ~ 3NTU , Filtration cycle is greater than 48h.