A columnar external pressure ultrafiltration membrane module

Abstract

A novel columnar external pressure membrane module provided by the present invention includes an external coarse filtration unit, an upper head unit, a lower head unit, an ultrafiltration membrane cluster combination filter unit and an aeration hole arranged in the outer coarse filtration unit; The two ends of the external coarse filter unit are respectively connected to the upper head unit and the lower head unit; the upper head unit is provided with an upper water outlet pipe, an exhaust pipe and an interface for an ultrasonic device, and the lower head unit is provided with There are lower water outlet pipes and air inlet pipes; the water outlets at both ends of the ultrafiltration membrane cluster combined filter unit are respectively connected to the upper water outlet pipe and the lower water outlet pipe; the air holes are respectively set at the bottom of the exhaust pipe of the upper head unit and the inlet of the lower head unit. The top of the trachea. The ultrafiltration membrane module has the advantages of compact structure, small footprint, convenient use, flexible operation, wide application range, and good promotion and application prospects.

Description

Technical field [0001] The invention belongs to the field of water treatment, and particularly relates to a columnar external pressure ultrafiltration membrane module. Background technique [0002] Recently, the application of ultrafiltration membrane technology in the field of water treatment has gradually attracted people’s attention, and the external pressure ultrafiltration membrane has been widely used as a process form, including columnar ultrafiltration membrane modules, such as the 150,000 in Wuxi Zhongqiao Water Plant m 3 / d Ultrafiltration membrane post-treatment project. In order to avoid the pollution of the ultrafiltration membrane module, it is often necessary to install pretreatment measures such as a security filter before 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 ultrafil...

AI Technical Summary

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

Images