Integrated biological reactor for treatment of industrial wastewater and domestic sewage

Abstract

The invention relates to an integrated biological reactor for treatment of industrial wastewater and domestic sewage. The integrated biological reactor comprises an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank, wherein the integrated biological reactor is shaped like a barrel as a whole, the cross section of the integrated biological reactor comprises three concentric circles, the interior of an outmost circular ring which is surrounded by the outmost two circles is divided into the anoxic tank and the aerobic tank through a partition plate, and the height of the partition plate is lower than that of a barrel body of the reactor; a middle circular ring surrounded by the innermost two circles is the sedimentation tank, and the anaerobic tank is arranged in the innermost circle; and the anaerobic tank is connected with the anoxic tank through a pipeline, and the aerobic tank is connected with the sedimentation tank through the pipeline. An aeration device is mounted at the bottom of the aerobic tank, and aeration is generally performed through a Roots blower. A sludge discharge pipe is arranged at the bottom of the sedimentation tank. The anaerobic-anoxic-aerobic-sedimentation tanks are integrally arranged and built, thus the problem of large occupied area in a traditional mode can be solved.

Description

technical field [0001] The invention is an integrated bioreactor for treating urban domestic sewage and various industrial waste water. Background technique [0002] The existing A2-O sewage treatment process is generally anaerobic-anoxic-aerobic process, and the aerobic section is a separate activated sludge process or biofilm process. Each biological reaction unit is built independently, which has the defect of occupying a large area. [0003] The activated sludge method belongs to the suspended biological treatment system. Its advantages are that the microorganisms and various environmental elements in the aeration tank are evenly distributed, the mass transfer efficiency is high, and the investment is low. However, the main problems of this process are: firstly, the large amount of sludge discharge and short sludge age cannot meet the requirements of high-efficiency nitrification, and thus cannot achieve high-efficiency denitrification; secondly, the volumetric load is ...

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Problems solved by technology

[0007] In order to solve the problem of separate construction of anaerobic-anoxic-aerobic-sedimentation tanks in the prior art and occupy a large area, the inventor provides a kind of integrated bioreactor

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