Treatment of organic waste gas in the pharmaceutical and chemical industries

With the development of society, medicine, and chemical industries, pharmaceutical and chemical pollution—hard to control and manage—has become increasingly severe, posing a major challenge to environmental improvement. This article analyzes waste gas pollution from pharmaceutical and chemical industries and proposes effective control measures. While acidic waste gas from such industries has been effectively controlled through sustained efforts, solvent-based waste gas (harmful to public health) remains poorly managed, demanding strengthened treatment.

Pharmaceutical and chemical R&D/production generates solvent waste gas (mainly containing methanol, toluene, acetone, dichloromethane, etc.) that is emitted into the air, causing severe pollution. Strict control and standardized treatment of such waste gas are essential to protect public health.

The solvent waste gas is characterized by large emissions, multi-point discharge, and irregularity. High solvent demand leads to excessive waste gas, reducing production efficiency while worsening pollution.

Indirect and irregular discharge is common. The waste gas has high concentration and strong pollution, causes odors, and spreads easily—making control and treatment difficult.

Although waste gas control has improved, problems persist. Some heavily polluting enterprises have been shut down, lowering air pollution indices. However, root-cause-oriented treatment is still needed to further reduce environmental impact.

Pharmaceutical and chemical enterprises should establish robust waste gas treatment mechanisms, adopt clean production, reuse solvents (to cut pollution and boost resource value), and address emissions at the source. Centralized treatment should replace multi-point discharge to effectively reduce environmental pollution.