High-load vertical ultradeep bioreactor

Abstract

A high-load vertical ultradeep bioreactor comprises a reactor body and a head box. An aerating device, a water inlet pipe, an air supply pipe and a water outlet pipe are disposed in the reactor body, and an air inlet of the air supply pipe is connected with an air compressor. The high-load vertical ultradeep bioreactor is characterized in that a water outlet of the water inlet pipe is positioned in the axial middle of the reactor body, an air outlet of the air supply pipe is lower than the water outlet of the water inlet pipe, and a water inlet of the water outlet pipe is positioned at the inner bottom of the reactor body and below the aerating device. An inner tube is further arranged in the reactor body, an upper port of the inner tube is higher than the top end of the reactor body and positioned in the head box, and a bottom port of the inner tube is lower than the water outlet of the water supply pipe and higher than the air outlet of the air supply pipe. Water power short circuit is avoided during operation of the high-load vertical ultradeep bioreactor, and circulation of a whole system can be realized with less air flow. In addition, the high-load vertical ultradeep bioreactor has the advantages of simple structure, low cost, small occupied are, higher hydrogen utilizing rate, low operation and maintenance cost, less foam and the like, and is applicable to treatment of industrial wastewater and urban sewage.

Description

technical field [0001] The invention relates to a bioreactor, in particular to a bioreactor for treating sewage. Background technique [0002] With the rapid development of the national economy, my country's urbanization process is accelerating, the amount of urban and industrial sewage is increasing, and the number and scale of urban sewage treatment facilities are also increasing; but the secondary pollution caused by the current urban sewage treatment projects is becoming increasingly serious , of which sludge and exhaust gas pollution are the most important. [0003] In addition, the population density in urban centers is increasing, and some cities are considering adding facilities and equipment to the original sewage treatment stations to improve sewage treatment capacity and effluent quality. At the same time, due to the fact that the carrying capacity of the original pipe network can no longer meet the demand for a sharp increase in sewage volume, and is constrained ...

AI Technical Summary

Problems solved by technology

At the same time, due to the fact that the carrying capacity of the original pipe network can no longer meet the demand for a sharp increase in sewage volume, and is constrained by the lack of underground space and the huge cost of demolition on the ground, it is gradually becoming more difficult to transform the original pipe network. Therefore, in order to reduce urban sewage pipes Network pressure, intensive use of land, nearby recycling, adopt the method of "combining centralized and decentralized treatment", and build decentralized sewage treatment stations in old urban areas or city boundaries

[0004] At present, some deep-water aeration systems are used to solve the above problems, but the existing deep-water aeration systems still have problems such as high energy consumption, low nitrogen removal efficiency, poor degassing effect of carbon dioxide, and unstable operation. The main reasons are as follows shortcoming:

[0005] (1) Oxygen deficiency may occur in the water inlet pipe between the head box in the main body of the reactor and the aeration device;

[0006] (2) Since both the water inlet and outlet are carried out in the head box, hydraulic short circuit may occur;

[0007] (3) In addition, the existing air distribution method makes the air volume in the water inlet pipe larger than the air volume in the water outlet pipe. When the conditions change, the liquid in the well may backflow, resulting in accidents

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