Moving bed bio-membrane reactor for domestic sewage treatment

Abstract

The invention discloses a moving bed bio-membrane reactor for domestic sewage treatment, which comprises a filter cartridge, a mounting hole is formed in one side of the filter cartridge, a liquid inlet box is hermetically connected to the inner wall of the mounting hole, a cooling box is fixedly connected to one side of the liquid inlet box, and an oxygen dissolving box is fixedly connected to one side of the cooling box. A lower reaction cylinder is fixedly connected to one side of the oxygen dissolving tank, an upper reaction cylinder is fixedly connected to the top of the lower reaction cylinder, an L-shaped plate is welded to the top of one side of the filter cylinder, and a first driving motor is fixedly mounted on one side of the L-shaped plate. The sewage treatment device has the beneficial effects that the structure is compact, sewage to be treated can be cooled and supplied with oxygen in advance, the dissolved oxygen amount of the sewage to be treated is increased, the filter screen plate can be rapidly and automatically cleaned, time and labor are saved, the downtime is shortened, the sewage treatment efficiency is improved, the labor intensity of workers is relieved, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a moving bed biofilm reactor used for domestic sewage treatment. Background technique [0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements of being discharged into a certain water body or reused. The moving bed biofilm reactor is another innovative biofilm reactor that has attracted the attention of researchers in recent years. It was developed to solve the complex operations of periodic backwashing of fixed bed reactors, fluidization of carriers in fluidized beds, cleaning of filter materials and replacement of aerators in submerged biofilters. [0003] At present, in domestic sewage treatment, moving bed biofilm reactors are used more and more, but the existing moving bed biofilm reactors still have the following defects: 1. Before the sewage enters the moving bed biofilm reactor, it needs to After the sewage is filtered, a...

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Problems solved by technology

[0003] At present, in domestic sewage treatment, moving bed biofilm reactors are used more and more, but the existing moving bed biofilm reactors still have the following defects: 1. Before the sewage enters the moving bed biofilm reactor, it needs to After the sewage is filtered, after a long period of use, a lot of dirt will remain on the filter screen, resulting in blockage of the filter screen, which requires a long shutdown and workers manually clean the filter screen. Manual cleaning is not only time-consuming and laborious, but also Increase the labor intensity of workers and reduce the efficiency of sewage treatment; 2, the amount of dissolved oxygen in sewage is a major factor affecting the effect of the filling in the moving bed biofilm reactor on sewage treatment. In the prior art, it is only in the moving bed biofilm The reactor is equipped with an aeration head to supplement oxygen, and the effective time for the oxygen sprayed by the aeration head to contact the sewage is short, which will cause uneven dissolved oxygen in the sewage, and the treatment effect of the filler on the sewage will also be different, which will seriously affect If the treated water quality does not meet the discharge standard, it needs to be re-treated, which will cause a waste of resources; 3. In order to achieve a good treatment effect on the dissolved oxygen in the sewage, it is necessary to reduce the flow rate of the sewage and reduce the amount of sewage. Through the flow of the moving bed biofilm reactor, it will seriously reduce the treatment capacity and treatment efficiency of the moving bed biofilm reactor for sewage treatment

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