Zero discharge treatment method of VOCs waste gases

Abstract

The invention relates to a zero discharge treatment method of VOCs waste gases. The method comprises the following steps: treating organic matters, namely carrying out organic matter treatment on waste gases generated by VOCs waste gas sources, wherein the organic matter treatment adopts one or a combination of more of an assimilation recycling method, an adsorption recycling method, a condensation recycling method, an incineration method, a catalytic incineration method, a plasma method and a biological method to remove VOCs in the waste gases; recycling exhaust gases, namely returning the waste gases subjected to the organic matter treatment to the VOCs waste gas sources. With the adoption of the zero discharge treatment method of the VOCs waste gases, zero discharge of the VOCs waste gases is realized, the technical problem of the zero discharge of the VOCs waste gases which is desired to be solved but cannot be solved by environmental protection equipment manufacturing enterprises over the years is overcome, and emission pollution of the VOCs waste gases to the environment is completely eliminated; the whole treatment process is simple and easy to operate and high in treatment efficiency, requires less equipment, has low energy consumption of the equipment, well meets requirements of modern enterprises on energy saving and emission reduction, improves requirements of production benefits and has great significance on saving resources and reducing costs.

Description

[0001] This case is a divisional application based on the invention patent with the filing date of 2014-07-02, the application number of 201410311818.5, and the title of "a VOCs waste gas treatment method" as the parent case. technical field [0002] The invention relates to the technical field of environmental protection treatment, in particular to a zero-emission treatment method for VOCs waste gas. Background technique [0003] As we all know, PM2.5 (fine particulate matter) and smog weather have increasingly serious impacts on people's lives and health, and VOCs (volatile organic compounds) are one of the main factors that make the concentration of PM2.5 abnormal. The total emission of VOCs has reached more than 20 million tons per year. In various occasions where organic solvents are used, such as painting, printing, metal degreasing and degreasing, adhesives, pharmaceuticals, plastics, rubber, petroleum and other processing and production sites, volatile organic compou...

AI Technical Summary

Problems solved by technology

In terms of pollution control technologies through various removal of volatile solvents (such as condensation method, adsorption method, absorption method, combustion method, biological method, membrane separation method, plasma method, photocatalytic oxidation method), although the treatment systems and methods continue to Renewal, the removal rate or recovery rate is constantly improving (some methods are as high as 98%), but there is always the discharge of residual VOCs, more of which cannot meet the standard discharge, and some sewage treatment methods even produce secondary pollution

With the further strengthening of the government's supervision of air pollution control, the emission standards of various regions and industries have been further improved, making it difficult for the existing treatment systems and methods to adapt to the ever-increasing emission standards.

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