An ultrafiltration membrane self-cleaning device

Abstract

The invention discloses an ultrafiltration membrane self-cleaning device, which relates to the technical field of water purification; specifically, it includes a filter cartridge holder, an ultrafiltration membrane filter cartridge and a water storage tank, and the inside of the filter cartridge holder is fixedly installed with multiple groups springs, and a filter cartridge fixture is installed between each group of springs, and the ultrafiltration membrane filter cartridge is fixedly installed between two adjacent filter cartridge fixtures, and the top of the ultrafiltration membrane filter cartridge is installed with a raw water inlet pipe, And the other end of the raw water inlet pipe is equipped with a water inlet three-way solenoid valve. In the present invention, the purified water in the water storage tank is introduced into the ultrafiltration membrane filter cartridge to backwash the ultrafiltration membrane, wherein the purified water in the water storage tank contains air bubbles introduced by the air pump, and the micro bubbles are used to impact and burst in the ultrafiltration membrane , to effectively improve the cleaning of dirt and impurities on the surface of the ultrafiltration membrane. At the same time, the ultrafiltration membrane filter cartridge is driven to vibrate during backwashing, and the vibration is used to speed up the speed of dirt shedding, thereby improving the efficiency and quality of ultrafiltration membrane cleaning.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to an ultrafiltration membrane self-cleaning device. Background technique [0002] Ultrafiltration membrane is a polymer semi-permeable membrane used in the ultrafiltration process to separate polymer colloids or suspended particles of a certain size from the solution. It is generally made of polymer materials such as: cellulose acetate, cellulose acetate Class, polyethylene, polysulfone and polyamide and so on. Generally, various types of membrane modules such as tube type, plate type, roll type, and capillary type are prefabricated, and then assembled and used together to increase the filtration area and facilitate maintenance. [0003] Ultrafiltration membranes have been widely used in the advanced treatment of industrial wastewater and process water, such as concentration, purification and separation of macromolecular substances in chemical, food and pharmaceutical i...

AI Technical Summary

Problems solved by technology

In addition, it can also be used for sludge concentration and dehydration, etc. After the ultrafiltration membrane system is used normally for a period of time, the retained impurities may cause certain pollution to the ultrafiltration membrane and affect the performance of the ultrafiltration membrane. Backwashing is to clean up the impurities of the ultrafiltration membrane. The most effective method can not only prevent the ultrafiltration membrane from being polluted, but also prolong the service life of the ultrafiltration membrane. However, the existing ultrafiltration membrane flushing mainly relies on filtered water for backwashing, and the flow rate of backwashing is insufficient for backwashing time. Long, low self-cleaning efficiency

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