Waste gas treatment process and fluidized-bed bioreactor used for same

Abstract

The invention provides a waste gas treatment process and a fluidized-bed bioreactor used for the same. The waste gas treatment process comprises the processes such as waste gas pressurization, waste gas reaction, waste gas separate-circulation and waste gas separate-emission; and waste gas is subjected to circular fluidization and enforced mass transfer in the reactor to be fully reacted with microorganisms at the temperature of between 15 and 40 DEG C. The provided fluidized-bed bioreactor used for the waste gas treatment process consists of a shell, a gas distributor, a guiding cylinder, a cap, a gas-liquid separator, a seal cover, and longitudinal sampling ports at different positions of the shell; and the guiding cylinder and the cap separate the inner cavity of the reactor into a lifting area, a reduction area and a separation area, so that the waste gas is circularly fluidized between the lifting area and the reduction area, and three phases, namely gas, liquid and solid, strengthen the mass transfer function. The concentration range of pollutants treated by the process and the fluidized-bed bioreactor is wide, the reaction efficiency is high, the reaction time is short, and the reactor occupies small area, and is quick to start and difficult to block.

Description

technical field [0001] The invention relates to a waste gas treatment process and a fluidized bed bioreactor used in the process, in particular to a low-concentration waste gas purification process and a fluidized bed bioreactor used in the process. Background technique [0002] With the rapid development of modern industry, more and more pollutants enter the atmosphere. Many organic pollutants also have certain carcinogenicity and cause serious harm to human health, which has increasingly attracted people's attention. Various countries have sought effective waste gas control and purification technologies. For high-concentration waste gas, most of them use physical and chemical methods such as absorption, adsorption, incineration, and oxidation. However, it is difficult to purify low-concentration waste gas. It has the characteristics of high efficiency, low cost, simple equipment, and no secondary pollution, especially when treating waste gas with good biodegradability, it ...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the concentration range of pollutants treated by the existing biological treatment process is narrow, the reaction efficiency is low, the reaction time is long, the reactor occupies a large area, the reactor start-up time is long, and it is easy to block. A waste gas treatment process and a fluidized bed bioreactor used in the process, the process and the fluidized bed bioreactor have a wide range of pollutant concentration to be treated, high reaction efficiency, short reaction time, and a small reactor footprint , the reactor starts quickly and is not easy to block, etc.

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