Buoyant board filter

Abstract

The invention discloses a filter chamber with a floating plate, which is characterized in that a plurality of drain holes are arranged at the side wall of a drainage channel and communicated with the filter chamber. The sides of the drain holes close to the drainage channel are provided with the floating plate and the drainage channel is connected with a main drainage channel by a drain valve. The invention has the advantages that by combining respective advantages of a V-shaped filter chamber and a flap-type filter chamber and adopting the arrangement of a center drainage channel of the V-shaped filter chamber, the filter chamber with the floating plate can shorten the length of the drain flow path, improve the drainage uniformity and reduce the re-settlement of suspended particles, thusrealizing more complete sewage disposal. Furthermore, by arranging a side wall in the drainage channel, replacing flaps with a plurality of floating plates and controlling synchronous on-off by the use of the drain valve, washing with high expansion and continuous washing with micro expansion can be realized to improve the washing effect and drainage uniformity and extend the area of a single tank.

Description

Technical field: [0001] The invention relates to a structure commonly used in water treatment, in particular to a floating plate filter. Background technique: [0002] Filters are the most commonly used structures in water treatment, and backwashing is the key to filters. Commonly used backwashing forms include high-intensity single water flushing (with surface auxiliary flushing) and air-water backwashing. Because the air scrubbing effect is good and water consumption is saved, air-water recoil has become the mainstream of large and medium-sized water plants. At present, the most commonly used air-water recoil filters include V-shaped filters and flap filters, and there are also ordinary fast filters with air-water recoil used in water plant transformation. The V-shaped filter adopts small amount of water to recoil, the filter material layer expands slightly, the recoil process is continuous, and the drainage weir and central drainage channel are used for drainage. Due to...

AI Technical Summary

Problems solved by technology

Due to mechanical structure and cost problems, a single flap cannot be very long and the number of blocks controlled by a single cylinder cannot be large. Therefore, the width of the flap filter controlled by two flaps is 8 meters. Influenced by the uniformity of the pipe, the width of the filter can only be so, so the area of ​​a single pool can only be increased by the length direction, but this will cause the drainage process to be too long, affect the total drainage time, and affect the discharge of suspended solids at the far end (also sink back to the surface of the filter bed)

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