滤池反冲洗滤料流失的防治１概述哈尔滨供水三厂是地表水处理厂，日供水能力为５０万ｍ３，占全市总供水量的８０％。其净化工艺为：源水由一级泵站送到三水厂稳压井，靠重力流流入双层隔板反应池、迷宫沉淀池、双层滤料滤池、清水池，再经吸水井由二级泵站送入市区管网。... Filter filter backwash prevention of loss of filter material 1 Overview Harbin Water Supply Plant is a surface water treatment plant, the daily water supply capacity of 500,000 m3, accounting for 80% of the city’s total water supply. The purification process is as follows: the source water is sent from the first-stage pumping station to the voltage-controlled well of the Sanshui plant, and flows into the double-wall baffle reaction tank, labyrinth sedimentation tank, double-layer filter material filter tank, clear water tank, and then the suction well by gravity flow. From the secondary pumping station into the urban pipe network. ...