Continuous floating bed filtering sedimentation sand filter device and use method

Abstract

The invention provides a continuous floating bed filtering sedimentation sand filter device and a use method, and relates to the technical field of a water treatment device. A first liquid inlet pipe,an overflowing groove and an overflowing groove liquid outlet pipe connected with the overflowing groove are arranged at the top of a pretreater; a clean liquid outlet pipe is arranged on the upper part of the side wall of the pretreater; a first blowdown valve is arranged at the bottom of the pretreater; a liquid outlet pipe is arranged at the top of a floating bed filtering sedimentation sand filter; a second liquid inlet pipe is arranged on the middle lower part of the floating bed filtering sedimentation sand filter; the liquid inlet of the second liquid inlet pipe is connected with the clean liquid outlet pipe, a gas inlet pipe and a return pipe; one end of the return pipe is connected with the liquid outlet pipe; a sight glass and a second blowdown valve are arranged at the bottom of the floating bed filtering sedimentation sand filter; and a net plate, a filler and a grid are arranged in a tank body of the floating bed filtering sedimentation sand filter sequentially from top to bottom. The continuous floating bed filtering sedimentation sand filter device fulfills the aims of simpler structure, high filtering precision, capability of regenerating on line, excellent on-lineregeneration effect and simplicity and convenience in operation.

Description

technical field [0001] The invention relates to the technical field of water treatment devices, in particular to the technical field of continuous floating bed filtration sedimentation sand filter devices. Background technique [0002] There are many types of existing water treatment and filtration equipment, among which sand filters are the most common. These sand filters mostly use quartz sand, anthracite, fiber balls, etc. as fillers, and most of the fillers use fixed bed methods. The problem of low precision and unstable filtration capacity is that it is difficult to achieve online regeneration after the filler is polluted, and frequent replacement of the filler is required, which makes it difficult to meet the long-term and heavy-load water filtration requirements. Contents of the invention [0003] The object of the present invention is to provide a continuous floating bed filtration settling sand filter device and its use method with simpler structure, high filtrati...

AI Technical Summary

Problems solved by technology

[0002] There are many types of existing water treatment and filtration equipment, among which sand filters are the most common. These sand filters mostly use quartz sand, anthracite, fiber balls, etc. as fillers, and most of the fillers use fixed bed methods. The problems of low precision and unstable filtration capacity, it is difficult to realize online regeneration after the packing is polluted, and the packing needs to be replaced frequently, so it is difficult to meet the long-term and large-load water filtration requirements

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