What are the common treatment methods for exhaust gas treatment projects?

1、 Activated carbon adsorption: This exhaust gas treatment method is usually applied to low concentration exhaust gas. The main principle is to let the exhaust gas pass through a device equipped with adsorbents. Adsorbents are usually activated carbon, polymers, silica gel, etc. There are many substances that can be used as adsorbents, but most adsorbents have strong adsorption effects, and activated carbon adsorption methods have an effect on most exhaust gases, so they are also widely used.

2、 Dilution diffusion method: This method is close to being phased out, but at the beginning of the founding of the People's Republic of China, dilution diffusion method was the "pioneer" of exhaust gas treatment in China. The main process is to send odorous gases to high places through chimneys or mix them with normal gases to achieve the purpose of dilution and purification. This method only treats the symptoms but not the root cause, and it is now almost non-existent.

3、 Water absorption method: Close contact between easily soluble waste gas and water, so that odorous gases can be absorbed by water. This method has lower operating costs and simpler technology, but the treatment efficiency is average and it can generate secondary pollution.

4、 UV photolysis method: This exhaust gas treatment method is the most widely used in China, mainly because the photolysis effect decomposes the exhaust gas to achieve purification.