Pharmaceutical factory waste gas treatment

Pharmaceutical factory exhaust gas treatment:
Adsorption desorption treatment of activated carbon has good adsorption effect on certain specific VOCs factors and can be desorbed and regenerated. Although there are problems such as high actual operating costs, troublesome secondary treatment, and difficulty in monitoring the effect at any time, it still plays an important role in the traditional treatment process of organic waste gas.
During the production of drugs, pharmaceutical factories mainly produce two volatile organic compounds, acetone and ethanol, as well as nitrogen oxides. However, during the wastewater treatment process, a foul odor is generated, mainly composed of hydrogen sulfide.
Governance principles
(1) According to relevant national and local environmental laws, regulations, and industrial policies, industrial pollution should be controlled to fully leverage the social, environmental, and economic benefits of construction projects.
(2) Properly address the pollutants generated during project construction and operation to avoid secondary pollution.
Governance objectives
Considering that the main pollutants of pharmaceutical factories have been listed, according to the emission standards in the formulation basis, each project should meet the national second level emission standards, as follows:
Selection of Pharmaceutical Waste Gas Treatment Technologies
1. Adsorption and desorption treatment
Activated carbon is a relatively traditional material for treating organic waste gas. It has good adsorption properties for certain specific VOCs factors and can be desorbed and regenerated. However, the transportation cost is high and secondary treatment is troublesome. Moreover, it is generally believed that hydrogen sulfide, amines, and aldehydes themselves are not suitable for adsorption with activated carbon; And highly volatile substances (such as ethanol) are basically not stably adsorbed by activated carbon; Substances with low volatility in polymers are easy to adsorb but very difficult to desorb.
2. Catalytic combustion method
Not only does it consume a lot of energy, but the combustion of acetone also produces highly toxic substances such as dioxins, so it is not suitable.
3. Low temperature plasma exhaust gas treatment process+composite photocatalytic process
This method is a degradation technology tailored to the unique characteristics of industries such as pharmaceuticals and chemicals. Its core technology is to first use low-temperature plasma to generate high-energy electrons, directly decompose harmful gases in exhaust gas factors, and degrade them into carbon dioxide and water. Then, using the action of light media, various harmful gases that have not yet been completed can be degraded to achieve the desired treatment effect.
Because the final products of the degradation of exhaust gas factors are mainly carbon dioxide and water, there is no problem of secondary pollution. Of course, during the exhaust gas treatment process, there will also be a small amount of hydrogen chloride, solids, and oily particles. These substances can also meet the national emission standards after testing, so this method is chosen to treat workshop exhaust gas.