Novel cylindrical external compression ultrafilter membrane assembly

Abstract

The invention provides a novel cylindrical external compression ultrafilter membrane assembly. The novel cylindrical external compression ultrafilter membrane assembly comprises an external coarse filtering unit, an upper end closure unit, a lower end closure unit, and an ultrafilter membrane cluster combination filtering unit and an aeration hole arranged in the external coarse filtering unit; two ends of the external coarse filtering unit are connected with the upper end closure unit and the lower end closure unit respectively; the upper end closure unit is provided with an upper water outlet tube, a gas discharging tube and an ultrasonic device interface, and the lower end closure unit is provided with a water outlet tube and a gas inlet tube; water outlets at two ends of the ultrafilter membrane cluster combination filtering unit are connected with the upper water outlet tube and the lower water outlet tube respectively; and gas holes are arranged at the bottom of the gas discharging tube of the upper end closure unit and the bottom of the gas inlet tube of the lower end closure unit respectively. The ultrafilter membrane assembly has the advantages of compact structure, small occupied area, use convenience, flexible operation, wide application range and good popularization application prospect.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a novel columnar external pressure ultrafiltration membrane module. Background technique [0002] The application of ultrafiltration membrane technology in the field of water treatment has gradually attracted people's attention recently, and external pressure ultrafiltration membrane has been widely used as a process form, including columnar ultrafiltration membrane modules, such as the 150,000 m 3 / d Ultrafiltration membrane post-treatment project. In order to avoid the pollution of the ultrafiltration membrane module, it is often necessary to set up pretreatment measures such as security filters in front of the ultrafiltration membrane module to ensure the normal filtration of the membrane module. Although this method can ensure the long-term operation of the ultrafiltration membrane system, it also limits the possibility of combining the ultrafiltration membrane with other pro...

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Problems solved by technology

In order to make full use of the hydraulic retention time of the membrane pool, it is often necessary to add certain water treatment chemicals and materials (such as coagulants, oxidants, and powdered activated carbon) in the membrane pool to improve the basic water quality of the ultrafiltration water and achieve better treatment. effect, but this also brings a significant increase in the filtration load of the ultrafiltration membrane; it is often necessary to ensure the amount of water passing through the ultrafiltration through violent aeration and agitation, but the application results are still not ideal, and it is easy to cause membrane damage and membrane pollution problem

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