Integrated sewage treatment device based on combined biofilms

Abstract

The invention discloses an integrated sewage treatment device based on a combination of an immobilized-state biofilm and a fluidized-state biofilm. The integrated sewage treatment device is divided into three stages of treatment chamber; and each treatment chamber contains three reactors and comprises the outer drum of the reactors, an aeration pipe, an aeration plate, a cylindrical steel frame, a spherical filling material and an elastic filling material. According to the invention, the cylindrical steel frames are fixed on the outer drums through reinforcing steel bars; two ends of each elastic filling material are separately fixed on one steel or iron cylindrical framework and arrayed according to a cylindrical shape to compose an inner drum; the outer drums are made of steel or iron; the aeration pipes and the aeration plates are arranged at the bottom of a barrel; and the spherical filling materials are arranged in annular gaps between the inner drums and the outer drums. The integrated sewage treatment device provided by the invention overcomes the defects of the prior art, inherits the advantages of the two above-mentioned biofilms, improves the treatment efficiency of biological treatment, guarantees that the quality of treated water meet the requirements of new emission standards, and can reuse treated sewage for production while reducing the emission of pollutants after sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to an integrated sewage treatment device based on the combination of fixed-state biofilm and fluidized-state biofilm. Background technique [0002] With the further improvement of sewage discharge standards, traditional biological treatment is difficult to meet higher water quality standards. The fixed state biofilm method makes up for many shortcomings of the activated sludge method, such as its good stability, strong ability to withstand the impact of organic load and hydraulic load, no sludge expansion, no reflux, high removal rate of organic matter, and the reactor It has the advantages of small size and small footprint of the sewage treatment plant. However, the solid-state biofilm method also has its unique defects, such as the filter material in the biofilter is easy to block, periodic backwashing is required, and it is difficult to fix the packing and replace the ae...

AI Technical Summary

Problems solved by technology

However, the solid-state biofilm method also has its unique defects, such as the filter material in the biofilter is easy to block, periodic backwashing is required, and it is difficult to fix the packing and replace the aeration equipment under the packing at the same time. The carrier particles can only play a role in the fluidized state, and the process stability is poor, etc.

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