Upflow coagulation cloth filter device and method

Abstract

The invention discloses a upflow coagulation cloth filtering apparatus and a method thereof, the apparatus employs a coagulation cloth filtering technology for processing water, after coacervation and flocculation steps of the coagulation process are generated, alum blossom and clear water are subjected to solid-liquid separation through a filter cloth from down to up after proper deposition. In operation, increasing cloth filtering resistance can be used for enabling the water after proper deposition at low part of the filter cloth to slowly flow into a high flush tank, and combined action of gravity dropping and suction negative pressure of sludge discharging can be used for automatically cleaning a filter material for cloth filter, and the filter material for the cloth filter has water distributing and short flow prevention effect on coagulation deposition. The apparatus and the method can be used for high-quality and high efficiency cleaning, and are convenient for realizing automatic control, a backwash pump required by traditional backwashing can be avoided, and development of the coagulation cloth filter technology can be promoted.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a coagulation cloth filter and a water treatment process device for backwashing thereof. Background technique [0002] Compared with the traditional coagulation and sedimentation technology, the coagulation cloth filter has the characteristics of good treatment effect, stable water quality, small filtration head loss and short flushing time, so the coagulation cloth filter has been widely used and promoted in recent years. However, its main defects are as follows: 1) the cloth filtration process is designed in an independent structure or device and is called a cloth filter, which occupies a large area; 2) the independently designed cloth filter needs to be additionally designed with a backwash pump, Sometimes even a separate inlet pump is required, which consumes more energy; 3) It is difficult to distribute water in and out of the coagulation sedimentation tank, and a small amoun...

AI Technical Summary

Problems solved by technology

However, its main defects are as follows: 1) the cloth filtration process is designed in an independent structure or device and is called a cloth filter, which occupies a large area; 2) the independently designed cloth filter needs to be additionally designed with a backwash pump, Sometimes even a separate inlet pump is required, which consumes more energy; 3) It is difficult to distribute water in and out of the coagulation sedimentation tank, and a small amount of short flow can increase the frequency of subsequent filter backwashing; The intercepted side of the material on the material forms a negative pressure and a short-term stretching effect on the pore size of the filter material, or the formation of a negative pressure requires complex equipment and additional power consumption

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