VOCs (volatile organic compounds) waste gas treatment method

Abstract

The invention relates to a VOCs (volatile organic compounds) waste gas treatment method. The treatment method comprises the following steps: a step of treating organic matters: carrying out organic matter treatment on waste gas generated by a VOCs waste gas source, wherein the treatment for the organic matters is to remove VOCs in the waste gas by adopting one or a combined method of an absorption recycling method, an adsorption recycling method, a condensation recycling method, a burning method, a catalytic burning method, a plasma method and a biological method; a step of recycling the tail gas: returning the waste gas after the organic matter treatment to the VOCs waste gas source. By adopting the VOCs waste gas treatment method, zero emission of VOCs waste gas is realized, the technical difficulty in realizing zero emission of VOCs waste gas, which needs to be solved but still can not be solved by environment protection equipment manufacturing enterprises for years, can be solved, and the environmental pollution caused by the emission of the VOCs waste gas can be thoroughly eliminated; the entire treatment process is simple and easy to operate, the treatment efficiency is high, few equipment is needed, the energy consumption of equipment is small, the requirement of modern enterprises on energy conservation, emission reduction and production effectiveness improvement can be well satisfied, and great significance on saving the energy and reducing the cost can be achieved.

Description

Technical field [0001] The invention relates to the technical field of environmental protection treatment, in particular to a method for treating VOCs waste gas. Background technique [0002] As we all know, PM2.5 (fine particulate matter) and haze weather have an increasingly serious impact 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 emissions of VOCs have reached the level of 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 compounds (VOCs) are polluting the air. In terms of pollution control technologies that people use to remove volatile solvents (such as condensation, adsorption, absorption, combustion, biological, membrane separation, plasma, and photo...

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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