V型滤池运行中存在的问题及解决方案

Problems and solutions in the operation of v-type filter

摘要：V型滤池是目前城镇给水处理厂设计中普遍采用的池型，其特点主要是采用较厚的均质滤料层增加过滤周期和先进的气、水反冲洗、表面扫洗技术增加反洗效果和减少自用水量。结合水厂的V型滤池设计及施工经验，总结出在V型滤池设计中应该注意的事项。针对水厂 V 型滤池运行中存在的如跑砂量大等各种问题进行原因分析，通过局部工艺改造等一系列调整措施，使滤池运行状况有所改观。

Abstract：V-type filter is widely used in the design of urban water treatment plant, which is characterized by the use of thick homogeneous filter layer to increase the filtration cycle and advanced gas, water backwash, surface cleaning technology to increase the backwash effect and reduce water consumption. Based on the design and construction experience of v-type filter in water plant, the paper summarizes the matters needing attention in the design of v-type filter. This paper analyzes the causes of various problems existing in the operation of v-type filter in water plant, such as large amount of sand run and so on.

关键词：V-type filter Back flush V groove

Key words：V型滤池 反冲洗 V型槽

1.现有设备运行过程中存在的问题

在阅读优秀学者对V型滤池运行过程的相关报告^[1]后，我发现常常存在以下问题：

1）根据张娟^[2]的研究结论,对比谁唱的运行工况可知，反冲洗环节中气冲强度偏大，滤池砂面至排水堰顶保护高度偏小，由此导致大量跑砂，直至保护高度达到一定值后滤层厚度才稳定。结论为，实际运行时在混冲阶段中气冲的强度过高会加重跑砂。