Effective Methods for Jiangsu Haipu to Address the Hazards of Benzene Waste Gas

Benzene waste gases include benzene, toluene, and xylene, collectively known as the "three benzenes." These compounds are widely used in chemical raw materials and various manufacturing industries. However, they are all toxic organic compounds. The primary health impact of benzene waste gases is on the central nervous system, causing abnormal excitement or inhibition of the nerves. By using absorption and adsorption methods, high-boiling, low-vapor-pressure oily solvents can be employed to absorb and purify the pollutants.

Benzene waste gases pose significant health risks, affecting our well-being. Environmental protection departments in our country have begun to implement total control measures for certain industries. This means that not only must emissions meet the required standards, but the purification efficiency must also be maintained before emissions are allowed. Companies that discharge waste gases directly will face corresponding penalties. In the treatment of low-concentration benzene waste gases using activated carbon, the method often mimics that used for high concentrations, which can be costly and sometimes not very efficient. Catalytic combustion uses a catalyst to burn and decompose the combustible components of harmful gases into water and carbon dioxide, releasing heat in the process.

The microbial treatment method uses a suspension as a spray agent to degrade harmful substances in the waste gas through microbial action, achieving the desired treatment effect. However, this method requires the cultivation of microorganisms, which demands a large amount of nutrients and a certain amount of oxygen. Therefore, this method has high operational requirements and is not very convenient to use. The absorption method uses a liquid absorbent to wash and absorb the harmful components of benzene waste gases in the absorption device, achieving the effect of purifying the waste gas. This treatment method involves low investment costs and is relatively inexpensive, making it suitable for widespread use in small and medium-sized enterprises.