Bioreactor device and method

Abstract

The invention provides a biological reaction device and method, comprising: passing the activated sludge mixture in the aeration tank into the biological reaction device, using the effluent of the biological treatment unit as the influent of the biological reaction device, and using The chemical agent adjusts the ion concentration of the influent, and aeration is carried out through the aeration head, so that the activated sludge and the influent are fully mixed in the bacterial colony acclimation area, and the bacterial colony is acclimated to form a mixed liquid. Physical sedimentation occurs in the liquid separation zone, and the sedimented bottom concentrated liquid is returned to the aeration tank through the pipeline. The biological reaction device occupies a small area and the facility unit is simple. There is no need to modify or expand the original sewage treatment equipment. It only needs to connect a biological reaction device to the aeration tank, which can improve the treatment capacity and operation stability of the sewage treatment system.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological reaction device and method. Background technique [0002] Ammonia nitrogen is an important assessment pollutant in sewage treatment. In the treatment of urban domestic sewage, biological method is the most commonly used technology to remove ammonia nitrogen. The biological removal of ammonia nitrogen is mostly based on the conventional activated sludge method, which is oxidized and removed by nitrifying bacteria under aeration conditions. Because the proportion of nitrifying bacteria in activated sludge is very small, it is sensitive to the concentration of organic matter, and its ability to resist environmental impact is weak. The removal effect of ammonia nitrogen in conventional activated sludge systems is often unsatisfactory. The current discharge standards for sewage treatment are becoming increasingly stringent, and the limit of ammonia nitrogen in ...

AI Technical Summary

Problems solved by technology

Because the proportion of nitrifying bacteria in activated sludge is very small, it is sensitive to the concentration of organic matter, and its ability to resist environmental impact is weak. The removal effect of ammonia nitrogen in conventional activated sludge systems is often unsatisfactory.

The current discharge standards for sewage treatment are becoming increasingly stringent, and the limit of ammonia nitrogen in the effluent is further reduced. Traditional processes cannot meet the discharge standards stably. It is urgent to establish a set of intensive new technologies without affecting the operation of mainstream processes.

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