Novel soft membrane unit

Abstract

The invention discloses a novel soft membrane unit and belongs to the technical field of a water treatment filtering medium. The soft membrane unit comprises a first membrane, a second membrane and a supporting thin sheet arranged between the first membrane and the second membrane; first flow channel cloth is arranged between the first membrane and the supporting thin sheet; second flow channel cloth is arranged between the second membrane and the supporting thin sheet; the supporting thin sheet is provided with a pressure regulation channel. According to the novel soft membrane unit disclosed by the invention, pressure difference of two sides of the membrane can be automatically adjusted and the membrane is not deformed all the time; the filtering efficiency of membrane filtering equipment is greatly improved and the service life of a membrane filter is prolonged; the use amount of backwashing medicinal liquid can also be saved; compared with a conventional membrane, the energy consumption can be greatly saved under the condition that water yields are the same.

Description

technical field [0001] The invention relates to the technical field of water treatment filter media, in particular to a novel film membrane unit. Background technique [0002] Ultrafiltration membrane technology is currently one of the most common and most convenient and effective technologies in the field of wastewater treatment. It has many advantages such as simple structure, convenient operation, good effluent quality, and low investment cost. [0003] The inventor had applied for a utility model patent with the authorized announcement number CN 201719981 U in 2010, which disclosed a hard disk membrane filter element of an ultrafiltration membrane lock assembly, including a first diaphragm, a second diaphragm and a clamp The first filter screen and the second filter screen placed between the first membrane and the second membrane are also provided with a partition between the first filter screen and the second filter screen; the rigidity of the membrane filter unit is im...

AI Technical Summary

Problems solved by technology

[0004] However, it has the following problems: in the filtration process, the phenomenon of uneven pore distribution caused by membrane fouling is easy to occur. When this phenomenon occurs, the pressure of the feed liquid on both sides of the membrane will deviate, resulting in bending and deformation of the membrane. The bending blocks the scour of the aeration, so that a part of the area that cannot be aerated is formed on the membrane, and the membrane pollution in this area becomes more and more serious, which directly leads to the reduction of the effective filtration area of ​​the single membrane, or the separation between the membrane and the adjacent membrane. The adhesion of the pollution layer between the membranes causes a series of membranes to fail, which seriously reduces the filtration efficiency and directly affects the water treatment of the project.

Moreover, the circular diaphragm itself has a serious waste of membrane material, and the end plates at both ends of the membrane module are also circular, and the cost of forming a membrane stack is high, which is difficult to promote in the field of water treatment

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