Four-stage sludge drying tail gas treatment system

Abstract

The invention relates to a treatment system for organic pollutants in tail gas and aims to provide a four-stage sludge drying tail gas treatment system. The system comprises a gliding arc discharge plasma reactor, a dust remover, a condenser and activated carbon absorbers, wherein the dust remover is connected with the drying tail gas outlet of a hollow blade-type drying machine; the condenser is connected with the dust remover; one ends of the activated carbon absorber are mutually connected with the condenser, and meanwhile, are mutually connected with the plasma reactor; the other ends of the activated carbon absorbers are mutually connected with a chimney, and meanwhile, are mutually connected with a heat exchanger; and the chimney is also connected with the plasma reactor. According to the four-stage sludge drying tail gas treatment system, heat is supplied by utilizing the waste heat of a boiler, thus, the operating cost of the system is low; desorbed tail gas can be fully degraded by the plasma reactor so as to avoid secondary pollution; and the phenomenon that the operating continuity of the whole system is influenced because saturated adsorbents are replaced is avoided by adopting two sets of activated carbon adsorption devices, so that the operating process of the whole system is more efficient.

Description

Technical field [0001] The invention relates to an organic pollutant treatment system in tail gas, in particular to a four-stage sludge drying tail gas treatment system. Background technique [0002] The effective treatment and recycling of sewage can reduce the waste of water resources and improve the human living environment, but the sludge after sewage treatment contains a large number of pathogens, parasites, pathogenic microorganisms, as well as arsenic, copper, chromium, mercury, etc. Heavy metals and toxic and harmful substances, and the sludge has a high moisture content and large volume, which brings great difficulties to stacking and transportation. If it is handled improperly or irregularly, such as random disposal and abuse of agricultural land, it will cause secondary pollution to the ecological environment . With the development of economy and the increase of urban population, the discharge of industrial wastewater and domestic sewage is increasing. The amount of s...

AI Technical Summary

Problems solved by technology

However, the reaction interval of the discharge of the blade reactor is very small, a large amount of exhaust gas cannot pass through the plasma area, and the residence time of the gas in the reactor is short, and its degradation effect is not very ideal.

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