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MBR process characteristics

MBR process characteristics

The application of membrane biological treatment technology in wastewater recycling has the following characteristics:

(1) It can effectively carry out solid-liquid separation, and separate the suspended substances, colloidal substances, microbial flora lost from the biological unit in the wastewater from the purified water. The separation process is simple, the floor area is small, and the effluent quality is good. Generally, it can be reused without tertiary treatment.

(2) It can maintain the biomass in the biological treatment unit at a high concentration, greatly improve the volume load, and the high efficiency of membrane separation can greatly shorten the hydraulic retention time of the treatment unit and reduce the floor area of the bioreactor.


(3) Because it can prevent the loss of various microbial flora, it is conducive to the growth of slow-growing bacteria (nitrifying bacteria, etc.), so that various metabolic processes in the system can be carried out smoothly.


(4) It makes the residence time of some macromolecular refractory organics longer, which is conducive to their decomposition.


(5) Membrane treatment technology is the same as other filtration and separation technologies. In the long-term operation process, the membrane as a filter medium is blocked, and the membrane gradually decreases through the water volume and operation time. Effective backwashing and chemical cleaning can slow down the decline of membrane flux and maintain the effective service life of MBR system.

(6) MBR technology is applied in urban sewage treatment. Because of its simple process and convenient operation, it can realize full-automatic operation and management.

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