由于虹吸滤池、无阀滤池等新型过滤构筑物的采用,与此相适应的小阻力配水系统(或称“集水装置”、“排水系统”等)也得到了较快的发展,其主导思想是在较小的配水阻力条件下力求均匀配水。国内外出现的各种配水系统,概括起来讲可分为两大类:第一类为一次性配水,如国内出现得较早的豆石滤板,单层多孔滤板,包括孔板网等;第二类为二次性配水,如双层多孔板、双层多孔滤砖 Due to the adoption of new filtration structures such as siphon filters and valveless filters, small-resistance water distribution systems (or “catchments”, “drainage systems”, etc.) that have been adapted to this have also been developed rapidly, leading The idea is to strive to evenly distribute water under conditions of low water distribution resistance. The various water distribution systems that have emerged at home and abroad can be summed up in two broad categories: The first type is a one-time water distribution, such as the domestically-produced bean-filter plates, single-layer porous filter plates, including orifice plates, etc. The second type is secondary water distribution, such as double porous plate, double porous filter tile