- Adsorption desorption
Activated carbon is the most traditional substance for treating organic waste gas. It has good adsorption to certain VOCs and can be desorbed, but the freight is high and the secondary treatment is troublesome. Moreover, it is generally considered that hydrogen sulfide, amines, and aldehydes are not suitable for adsorption by activated carbon. And highly volatile substances (such as ethanol) are not substantially adsorbed by activated carbon. A substance having a low volatility of a polymer is easily adsorbed but desorption is very difficult.
2. Catalytic combustion
Not only is it energy-intensive, but it also produces highly toxic dioxin after burning acetone, so it is not suitable.
3. Low temperature plasma exhaust gas treatment process + composite photocatalysis process
First, high-energy electrons are generated by low-temperature plasma, and the harmful gases in the exhaust gas factor are directly decomposed to be degraded into carbon dioxide and water, and then the various types of harmful gases that have not yet been completed are degraded by the action of the optical medium, thereby achieving the treatment effect.
Since the final product of the degradation of the exhaust gas factor is mainly carbon dioxide and water, there is no trouble of secondary pollution. Of course, a small amount of hydrogen chloride, solid and oily particulate matter are also generated in the exhaust gas treatment process. These substances can also be tested to meet national emission standards, so this method is used to treat the waste gas in the workshop.