Filtering film bag and film bioreactor using the filtering film bag

Abstract

The present invention relates to a filtering membrane packet which consists of five layers of materials at least, wherein, the central layer is filtering support gridding; the two sides of the filtering support gridding are provided with filtering support cloth respectively; the outer side of the filtering support cloth is provided with a filtering membrane respectively; the five layers of materials form a membrane packet with an integral closed structure. The surface of the membrane packet is provided with at least one collecting port used for leading filtrate in the membrane packet out. The present invention also provides a membrane biological reactor which uses the filtering membrane packet. The membrane biological reactor comprises a membrane packet component, an aerator pipe component, a filtrate collecting pipe component and a frame fixing component used for fixing the components into a whole. The present invention uses five layers of materials of the filtering support gridding, the filtering support cloth and the filtering membranes to form the membrane packet, the membrane surface is flat and is not dirty easily; the membrane biological reactor using the membrane packet is simple for aerating and flushing and has the small size of membrane components, the high quality of produced water, strong anti-pollution capacity, long service life of the membrane, easy maintenance and low manufacturing cost; and the present invention requires the user to invest low cost so that the membrane biological reactor can be popularized and applied widely.

Description

technical field [0001] The invention relates to the field of membrane bioreactors, in particular to a filter membrane bag and a membrane bioreactor using the filter membrane bag. Background technique [0002] Membrane bioreactor technology is an efficient wastewater treatment process that combines biological treatment process and membrane separation technology. Compared with the traditional wastewater biological treatment process, this process has the advantages of short process flow, good effluent quality, direct reuse of effluent, small equipment footprint, high activated sludge concentration, low residual sludge output and easy automatic control. Therefore, this process has a broad prospect in the field of wastewater treatment. [0003] In a typical membrane bioreactor, the hollow fiber membrane module is immersed in the mixed liquid of the reactor, and the water is discharged by the suction of the pump. Cross-flow, thus generating shear force on the membrane surface, u...

AI Technical Summary

Problems solved by technology

[0005] 1. Due to the poor strength of the hollow fiber membrane, it is easy to break, which affects the quality of the produced water;

[0006] 2. Hollow fiber membranes are easy to pollute, not easy to clean, and require frequent maintenance, which virtually increases the operating cost of the membrane bioreactor;

[0007] 3. The service life of the hollow fiber membrane is short, and the operating cost of the membrane module is high, which greatly affects the promotion and application of the membrane bioreactor

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