Method for efficiently removing VOCs gas by adopting micro-nano bubbles

Abstract

The invention provides a method for efficiently removing VOCs gas by adopting micro-nano bubbles, and belongs to the technical field of waste gas treatment. The waste gas treatment method comprises the following steps of: (1) producing micro-nano bubbles by utilizing a micro-nano bubble generation device; (2) introducing the micro-nano bubbles in the step (1) into alkaline electrolyzed water; and(3) treating VOCs gas by using the product obtained in the step (2). According to the treatment method provided by the invention, the VOCs gas can be quickly and efficiently removed, and the removal rate of the VOCs gas with complex components can be up to 99%.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a waste gas treatment method, in particular to a method for efficiently removing VOCs gas by using micro-nano bubbles. Background technique [0002] VOCs is a general term for organic substances that are easily volatile at room temperature, and common ones include formaldehyde, toluene, and xylene. VOCs are the most important precursors before the formation of PM2.5. Fine particle pollution is becoming more and more serious. The treatment of VOCs has become a major focus of air pollution control in various places. In addition to producing ozone pollution, VOCs also form secondary organic aerosols (25-35%). VOCs have become the decisive precursors of urban photochemical smog in my country. After my country's Ministry of Environmental Protection and other departments issued the "Guiding Opinions on Promoting Joint Prevention and Control of Air Pollution to Improve Re...

AI Technical Summary

Problems solved by technology

However, the use of an ozone generating device in the patent limits the popularization and application of the patent

CN1428185A discloses a treatment equipment and treatment method containing VOC organic waste gas. This patent integrates ozone oxidation technology and traditional wet scrubbing technology, and uses oxidants (especially hydrogen peroxide) to treat VOC waste gas. This treatment method needs to provide a large amount of hydrogen peroxide , the treatment cost is high, and the inhalation of hydrogen peroxide vapor or mist can damage the human respiratory tract, and direct contact with the eyes can cause irreversible damage or even blindness, with a high risk factor

Moreover, this treatment method sometimes requires repeated treatment of the gas containing VOC, which increases the treatment cost and reduces the treatment efficiency.

[0005] At present, the methods of treating VOCs with micro-nano bubbles mostly have the problems of high processing cost, complicated process operation, low processing efficiency, and low removal rate of VOCs of complex components.