Construction method for water and gas distributing system of filter pool

Abstract

The invention relates to a construction method for a water and gas distributing system of a filter pool. The method is characterized by comprising the following steps of: A, arranging a water and gas distributing channel on the lower part of a gas-water back washing filter pool, constructing a channel top plate on the upper part of the water and gas distributing channel in combination of a water distributing vertical pipe and a gas distributing vertical pipe, burying a leveling plate, pouring the channel top plate and leveling by using the buried leveling plate; B, welding a secondary leveling plate on the upper part of the buried leveling plate, arranging a water and gas distributing transverse pipe on the upper part of the secondary leveling plate and communicating the water and gas distributing transverse pipe with the water and gas distributing channel through the water distributing vertical pipe and the gas distributing vertical pipe; and C, arranging a pressure plate on the water and gas distributing transverse pipe and leveling and fixing the water and gas distributing transverse pipe. The invention has the advantages: upper and lower double gas cushion layers can be formed in the water and gas distributing channel and the water and gas distributing pipe during back washing of the filter pool on the premise of paying attention to the construction steps and quality, and normal running of the system is ensured; and the method is suitable to be applied to a newly-built or rebuilt gas-water back washing filter pool project of a water plant.

Description

Technical field: [0001] The invention relates to the technical field of sequence batch backwashing filters in water supply plants, in particular to a construction method for a filter water and air distribution system for new or reconstructed sequence batch air-water backwash filters in water supply plants. Background technique: [0002] At present, the water and air distribution system of the air-water backwashing filter in domestic water supply plants generally uses filter plate filter heads. Although the water and air distribution is relatively uniform, it is more suitable for a single-layer homogeneous filter material, and the construction requirements are extremely high, especially It is the flatness of the filter plate and the tightness of the joints, resulting in a long construction period and difficulty in quality assurance, and the water and air distribution channel set up in conjunction with the central drainage channel reduces the effective area of ​​​​the filter ta...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for the water distribution and air distribution system of the filter, which is suitable for the water distribution and air distribution system of the newly built or reconstructed air and water backwashing filter in the water supply plant, and it can better solve the existing air and water flushing interference Difficulty ensuring the verticality and horizontal position of the standpipe, and the bottom plate fixing bolts are affected by the bottom plate reinforcement, etc.

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