Sewage nanofiltration treatment device

Abstract

A sewage nanofiltration treatment device comprises a precision filter, a high-pressure water pump and membrane filters, a sewage inlet pipe and a sewage transfer pipe are arranged on the precision filter, the precision filter is connected with at least one membrane filter through the sewage transfer pipe and the high-pressure water pump, and filter elements are arranged in the membrane filters. Water passing through the filter elements flows out of a produced water outlet through a produced water pipe, and water not passing through filter elements flows out of a concentrated water outlet through a concentrated water pipe. The sewage nanofiltration treatment device further comprises a cleaning water tank, the upper end of the cleaning water tank is provided with one end of a water supplementing pipe, one end of a water return pipe and one end of a backflow pipe, the lower end of the cleaning water tank is provided with one end of a water outlet pipe, one ends of the water supplementing pipe, the water return pipe, the backflow pipe and the water outlet pipe are respectively provided with a ball valve, the other end of the water supplementing pipe is connected with a water producing pipe, the other end of the water return pipe is connected with the concentrated water pipe, the other end of the backflow pipe is connected with the water outlet pipe, and the other end of the water outlet pipe is connected with a sewage transfer pipe entering the membrane filter through a self-priming pump.

Description

technical field [0001] The invention relates to a nanofiltration treatment device in the field of sewage treatment. Background technique [0002] In the current nanofiltration treatment device, when the filter element in the membrane filter is not cleaned in time or needs to be cleaned manually, this will reduce the water quality and output, and will increase the maintenance cost, which is not conducive to efficient and continuous work requirements. Contents of the invention [0003] The purpose of the invention of this application is that the cleaning water tank on the device can clean the filter element of the membrane filter, and the water production pipe and the concentrated water pipe on the device can be used for circulating operation, so as to ensure the water quality and output of the water produced by the device, and save maintenance costs. Provided is a sewage nanofiltration treatment device. [0004] To achieve the above object, the present invention adopts the...

AI Technical Summary

Problems solved by technology

[0002] In the current nanofiltration treatment device, when the filter element in the membrane filter is not cleaned in time or needs to be cleaned manually, this will reduce the water quality and output, and will increase the maintenance cost, which is not conducive to efficient and continuous work requirements.

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