A method for anti-fouling and blocking inflow and return water for filters

Abstract

The invention discloses a method for anti-pollution blocking and water return of a filter. During the forward water intake process, the water flow enters the water distribution channel on the ring wall of the water distribution body through the water guide part and diverges out, and the water flow inside the water distribution body Reverse water flow pressure is applied to the backstop unit, and the reverse flow pressure causes the sheet-shaped tail of the backstop unit to deform, and the backstop channel formed in the sheet-shaped tail follows the deformation to block the water flow through the backstop unit; Divided into two, the water flow of the water flow path 1 and the water flow path 2 is collected inside the water distribution body and then flows out through the water guide; when water backwashing or air-water backwashing is performed, the pressure generated according to the pollution and blockage of the water distribution unit Changes make the backstop unit open different openings, the backwash pressure is large, the opening is large, and vice versa, the invention reduces the impact of fouling on the forward or reverse water flow, and realizes that the filter can still be used in the case of severe fouling. Carry out continuous backwashing operation, improve the water filtration effect, and the operation is simple.

Description

technical field [0001] The invention relates to a method for anti-pollution blocking and water return for filters, which belongs to the technical field of water treatment. Background technique [0002] The filter in the water treatment equipment is used to filter the particles in the water, etc. After a period of positive water production, the surface of the filter material will form a pollution layer, especially when there are many suspended solids in the incoming water , It is more likely to cause rapid fouling of the filter, reduce the water pressure of the filter, and deteriorate the filtering effect. At this time, the filter needs to be backwashed, including water backwashing or water-air backwashing, and then forward water washing. [0003] At present, when the upper water distributor is backwashing water, the pollution layer on the surface of the filter material is likely to form a huge block blockage, and the backwash water or backwash air water has a large discharge...

AI Technical Summary

Problems solved by technology

[0003] At present, when the upper water distributor is backwashing water, the pollution layer on the surface of the filter material is likely to form a huge block blockage, and the backwash water or backwash air water has a large discharge resistance, or even cannot be discharged. At this time, the filter needs to be cleaned. The clogging can be alleviated by positive washing, that is, positive water inflow, but the subsequent backwashing work will still cause clogging. Such repeated flushing with return water is cumbersome, which seriously affects the cleaning effect and reduces the cleaning efficiency.

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