滤池工艺(国外英文资料).docVIP

滤池工艺(国外英文资料) Comparison of filter process in water treatment process Class: supply and drainage XXX name: XXX number: 1234567890 Abstract: in the process of water treatment, after coagulation, it is necessary to filter. Filtering the required structures is the filter pool. The purpose of the filter is to remove suspended water from the water to obtain water that is less turbidity. Some are used to remove water from the sludge to obtain sludge with low water content. The filtration mechanism is the mechanical sieve and the contact coagulation. When the filter is run for a period of time, the filter will need to be backwashed to make the filter recover. The structure of various types of filters is described below, and the characteristics and applications are introduced and compared. Key words: filter filter material to develop the advantages and disadvantages Common fast filter For ordinary fast filter (rapid filter) is for a quick filter decorate a form, the traditional filter material for single size distribution of the sand filter material commonly or coal, sand, double filter, with one water wash, rinse rinse water by water tower (box), or the pump supply. The facilities of the normal rapid filter station are made up Ordinary fast filter station facilities, mainly from the following several parts: the filter ontology, it mainly includes inlet pipe canal, sink, filtering medium (filter material layer), filter medium layer retainer (bedding layer) and distribution (row) water system; Pipe rack, it basically set up five pipe (canal), namely the muddy water inlet pipe, the water outlet pipe, early flushing pressure pipe, flush the drain and filter drain, and valves, a monitoring table facilities, etc.; Flushing facility, which includes flushing water pump, water tower and auxiliary irrigation facilities etc. The control room, etc. General quick filter design points and main parameters 1). The number of filters should be no less than 2, and the number of filters is le