Membrane filtration and aeration integrated device

Abstract

The invention relates to a membrane filtration and aeration integrated device, which comprises an upper cavity, a lower cavity and a cylindrical filter membrane connected between the upper cavity andthe lower cavity in a sealing way. A support rod is connected between the center of the upper cavity and the center of the lower cavity; a plurality of waterway separation plates are distributed around the support rod; one side of each waterway separation plate is connected with the support rod; the other side of each waterway separation plate is connected with two airway separation plates; the two airway separation plates contact the filter membrane to form a fan-shaped air inlet channel; a filter membrane between each two adjacent waterway separation plates, a filter membrane between two airinlet channels and a filter membrane between two air inlet channels jointly form a drainage channel; the upper cavity is connected with a water outlet pipe; the lower cavity is connected with a waterinlet pipe. The membrane filtration and aeration integrated device provided by the invention integrates aeration and filtration into a whole, so that water pollutants are degraded, meanwhile, pollutants scaled on a surface of an outside membrane are washed out, and the stability of water outlet membrane flux and high-efficient oxygen transfer efficiency are kept.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an integrated membrane filtration and aeration device. Background technique [0002] With the gradual improvement of the municipal drainage pipe network and the continuous improvement of the sewage treatment rate, the effluent standards after sewage treatment are also becoming stricter. Under this situation, the membrane filtration process has been rapidly developed and widely used due to its high-quality effluent quality. use. Compared with the conventional activated sludge process, the membrane filtration process saves the sedimentation section required in the conventional process and reduces the footprint because of its integrated function of filtration and biochemistry. In addition, the membrane process has a filtration function to achieve high-quality effluent water quality. [0003] However, in the current actual operation process, the process mainly uses its own micro-por...

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Problems solved by technology

[0003] However, in the current actual operation process, the process mainly uses its own micro-pore structure to perform the filtering function. As the operation time continues, the clogging problem caused by membrane fouling becomes more and more obvious, especially the problem of biofouling, and cleaning Difficult, the fouling problem not only affects the amount of treated water, but also gradually increases the energy consumption of the system, which has a certain impact on the normal operation of the system and the stable compliance of the effluent

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