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一、引言长桥水厂隶属于上海市自来水市南有限公司,是一座国内自行设计、建造并逐步发展起来的大型水厂。1958年建厂初期的供水能力仅为30万m~3/d,以后经过三次扩建,设计供水能力达到140万mm~3/d。其中有100万m~3/d水量的滤池是采用虹吸式移动罩滤池。虹吸式移动罩滤池为快滤池的一种类型。它是由许多滤格为一组构成的滤池,利用一个可移动的冲洗罩轮流对各滤格进行冲洗。某滤格的冲洗水来自本组其他滤格的滤后水,这方面吸取了虹吸滤池的优点。移动冲洗罩的作用与无阀滤池伞型顶盖相同,冲洗
I. INTRODUCTION CHANGQIAO WATER PLANT, affiliated to Shanghai Tap Water South Company Limited, is a large-scale water plant designed, built and gradually developed in China. In 1958, the initial water supply capacity was only 300,000 m 3 / d. After three times of expansion, the design water supply capacity reached 1.4 million mm 3 / d. One million m ~ 3 / d of water is the use of siphon mobile hood filter. Siphon mobile hood filter for quick filter type. It is a filter made up of a number of filter compartments, which are flushed with a removable wash cover in turn. A filter grid flushing water from the other filters in this group of filtered water, which draws the advantages of siphon filter. Flushing The hood acts the same as the no-filter umbrella canopy and rinsing