Combined type biodegradation-absorbing and separating waste gas processing device and the operation method

Abstract

The invention relates to a combination biodegradation and adsorption separation exhaust gas treatment device, comprising a bioreactor and an adsorption separation cleaner, which form the gas purifying unit, wherein, a gas inlet with a perforated pipe is arranged on one side wall of the lower part of the bioreactor, and a gas outlet pipe is arranged on the side wall of the upper part of the bioreactor; another side wall of the lower part of the bioreactor is arranged with a water outlet higher than the gas inlet, and side wall of the upper part is provided with a spray liquid inlet and another perforated pipe; the bioreactor is filled with filling, and the gas outlet pipe is connected to the adsorption separation cleaner; the adsorbent is provided inside the adsorption separation cleaner, and the gas passes through the absorbent from bottom to top via a gas inlet on the lower part of the adsorption separation cleaner and a gas outlet pipe on the upper part of the adsorption separation cleaner. The pollutant in the exhaust gas can be efficiently removed in the invention by combination of biotechnology and adsorption technology, wherein, slowly-biodegradable matters are adsorbed and enriched on the adsorbent, thereby improving purifying effect of the exhaust gas and reducing the volume of the bioreactor.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to equipment for treating waste gas combined with biological and physical and chemical technologies, in particular to a combined biodegradation-adsorption separation waste gas treatment equipment. Background technique [0002] People have already started research on the treatment of pollutants in exhaust gas, and some effective control technologies have been developed. Among the traditional treatment technologies, there are more researches and widely used ones: physical methods, including masking method and dilution diffusion method; incineration methods, including thermal combustion and catalytic combustion; chemical oxidation methods, including ozone oxidation, catalytic oxidation and permanganate Potassium oxidation, etc.; absorption methods, including water absorption, acid absorption, alkali absorption, digested sludge absorption, and other chemical absorption me...

AI Technical Summary

Problems solved by technology

The biological trickling filter equipment is relatively simple, and the absorption and biodegradation of pollutants in the exhaust gas occur simultaneously in a reaction device, but it is not suitable for treating high concentrations of pollutants

[0008] The common defect of these three types of exhaust gas biological treatment equipment is that it is difficult to effectively remove high-concentration refractory biodegradable substances due to the need to maintain a certain biomass and residence time for microbial degradation of pollutants

Using the method of increasing the volume of the equipment to prolong the residence time will bring problems such as large floor area, complex equipment, large investment, and high operating costs.

When the load of the bioreactor changes, especially when it suddenly increases, the pollutants in the exhaust gas cannot be degraded by microorganisms in time, resulting in the phenomenon that the exhaust gas does not meet the standard

In addition, the gas pre-wetting equipment in the biological filter, the gas scrubbing equipment in the biological scrubber and the biological trickling filter all need a large amount of circulating water, which consumes a lot of energy.

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