A multi-channel double-layer flat membrane module

Abstract

The invention relates to a multi-channel double-layer type flat membrane combined apparatus, which comprises a first membrane box and a second membrane box, wherein the first membrane box is arranged on the upper side of the second membrane box, the lower side of the second membrane box is provided with an aeration box, the aeration box comprises an aeration pipeline, at least two double-water outlet membrane elements are respectively filled in the first membrane box and the second membrane box, any one double-water outlet membrane element comprises two water outlets, each water outlet is connected with a water collecting pipe, and one ends of the water collecting pipes respectively extend onto the outer sides of the first membrane box and the second membrane box. According to the present invention, the filling density of the flat membrane combined apparatus is increased, the occupation area is reduced, the aeration utilization rate is substantially increased, the water collecting process is shortened with the double-water outlet membrane element, the suction energy consumption of the filtered water is reduced, the online membrane washing is easily achieved, and the online washing efficiency is increased.

Description

Technical field: [0001] The invention relates to the field of physics, in particular to sewage treatment technology, in particular to a multi-channel double-layer type flat membrane packer. Background technique: [0002] Membrane bioreactor (MBR) is a new type of sewage treatment device that combines high-efficiency membrane separation technology with activated sludge process. Among them, the membrane unit is directly immersed in the liquid mixture of activated sludge, and there is no need to set up a dedicated secondary sedimentation tank or a dedicated filtration system, thereby reducing the floor space and can be used for industrial and municipal treatment. sewage. [0003] Compared with hollow fiber membrane bioreactors, flat membrane bioreactors have higher pollution resistance, and can maintain high flux (flux is the water production of membranes) under high sludge concentration, so the efficiency of sewage treatment is higher. The impact resistance is stronger, and ...

AI Technical Summary

Problems solved by technology

In the prior art, the water outlet of the membrane element of the flat membrane MBR is set on the top of the membrane element, the water flow channel through the filter membrane is long and narrow, and the pressure head loss is serious; and the installation method of the single-layer membrane module makes the aeration unable to fully play its role. Waste of drive energy for vacuum pumps

[0006] In addition, membrane fouling is an inevitable phenomenon in the membrane filtration process. Membrane fouling leads to a decrease in the water flux of the membrane. The membrane must be cleaned to maintain the normal use of the membrane.

In the prior art, physical methods are used to clean the membrane, but the efficiency is low because it cannot be done online

Images