Influence of waste gas pollution in pharmaceutical industry and application of treatment technology

[Pharmaceutical Network Exhibition Report] The pharmaceutical industry is an important part of China's economy, and the industry has continued to grow in recent years
.

However, due to the large amount of waste gas pollution generated in pharmaceutical production, if it is directly discharged without treatment, it will seriously affect the ecological environment, which is contrary to China's sustainable development strategy
.

Based on this, it is necessary to strengthen the research and development and application of waste gas pollution control technology in the pharmaceutical industry, and further reduce industrial waste gas pollution while satisfying industrial production
.

This paper analyzes the characteristics and influence of waste gas pollution in the pharmaceutical industry, as well as the application of waste gas pollution control technology in the pharmaceutical industry
.

 The impact of waste gas pollution in the pharmaceutical industry and the application of treatment technologies (Photo source: Pharmaceutical Network) Characteristics and effects of waste gas pollution in the pharmaceutical industry According to the nature of pollutants, air pollutants can be divided into two categories: acid gases and VOCs (volatile organic compounds)
.

Among them, in the pharmaceutical industry, VOCs are a common air pollutant, including fermentation pharmaceutical industry, chemical synthesis pharmaceutical industry, extraction pharmaceutical industry, bioengineering pharmaceutical industry, traditional Chinese medicine pharmaceutical industry,
etc.

Such pollutants are often produced during biological fermentation, chemical synthesis, transportation, storage, use and recovery of organic solvents, product purification and drying, and wastewater treatment
.

Studies have shown that there are more than 4,000 VOCs and odorous substances that people can feel by smell, of which more than 100 are produced in the pharmaceutical industry.
These VOCs and odorous gas substances not only stimulate the human sensory organs, but most of them are toxic.
Among them, mercaptans and phenols can directly harm human health, and vinyl chloride, benzene, polycyclic aromatic hydrocarbons, and formaldehyde are carcinogens
.

Therefore, it is a very important work to strengthen the treatment of VOCs waste gas
.

 　　In addition to VOCs waste gas, the pharmaceutical industry waste gas pollution such as malodorous gas generated in the pharmaceutical process also generally has the characteristics of complex composition, large amount of pollution and intermittent discharge.
, will destroy the ecological balance and threaten human health
.

For such issues, China has promulgated a series of policies and systems
.

 　　For example, since July 1, 2019, China has implemented the "Pharmaceutical Industry Air Pollutant Emission Standard" issued by the Ministry of Ecology, requiring new enterprises to start from July 1, 2019, and existing enterprises to start from July 1, 2020.
, and its air pollutant emission control shall be implemented in accordance with the provisions of this standard
.

This standard specifies the air pollutant emission control requirements, monitoring and supervision and management requirements for the pharmaceutical industry
.

Its promulgation reflects the concept of whole-process control, clarifies the definition and characterization methods of VOCs, and strengthens the requirements for fugitive emission control.
It is necessary to study and formulate analysis method standards for control indicators such as TVOC and benzene series as soon as possible, and study and issue relevant detection technical specifications in process control, such as the location and method of wind speed detection in fugitive emission determination
.

 　　The local level is also strengthening the prevention and control of air pollution in the pharmaceutical industry
.

For example, in order to prevent and control environmental pollution, improve environmental quality, and protect human health, Jiangsu Province recently issued the "Air Pollutant Emission Standards for the Pharmaceutical Industry", which stipulates the requirements for the control, monitoring, and supervision and management of air pollutant emissions in the pharmaceutical industry.
It will be implemented from August 1, 2021; recently, Shanghai also issued the local standard "Pharmaceutical Industry Air Pollutant Emission Standard" (DB31/310005-2021), which aims to strengthen the emission control of air pollutants in the pharmaceutical industry, promote the production process and Progress in pollution control technology
.

The standard will be implemented on June 1, 2021
.

 　　For pharmaceutical companies, under the background of a series of tightening policies, it is necessary to attach great importance to the prevention and control of air pollution, strengthen the exploration and application of air pollution control technologies in the pharmaceutical industry, and promote the sustainable development of enterprises and even the industry
.

 　　Application of waste gas pollution control technology in pharmaceutical industry On March 7, 2012, China's implementation of the "Pharmaceutical Industry Pollution Prevention and Control Technology Policy" clarified that the pharmaceutical industry pollution prevention and control should follow the combination of clean production and end-of-line treatment, comprehensive utilization and harmless disposal.
The principle of combination; pay attention to pollution control at the source, strengthen refined management, advocate the classified collection and quality treatment of waste water, adopt mature pollution prevention and control technology, reduce waste gas emissions, improve the comprehensive utilization level of waste, and strengthen environmental risk prevention
.

 　　In response to the problem of waste gas pollution in the pharmaceutical industry, China is currently accelerating the transformation of cutting-edge technologies and has various pharmaceutical waste gas pollution control technologies, which have achieved considerable results in the treatment of waste gas pollution in the pharmaceutical industry
.

Among them, there are two types of commonly used VOCs treatment technologies, one is physical treatment method, including condensation recovery method, absorption method, adsorption method, etc.
; the other is chemical reaction treatment method, including regenerative thermal oxidation method, catalytic combustion method,
etc.

 　　①Condensation recovery method The condensation recovery method uses the physical specificity of saturated vapor pressure to filter out the vapor pollutants in the organic waste gas of pharmaceuticals by properly adjusting the temperature and pressure of the production system
.

For solvents with higher boiling points, this method can achieve higher recovery efficiency
.

At present, this method is mainly suitable for the treatment of solvents with high recovery value and pharmaceutical organic wastes with high concentration
.

 　　②Adsorption method The adsorption method realizes the treatment of organic waste gas through adsorption and regeneration of the adsorbent, and can recover the organic compounds attached to the surface of the adsorbent
.

This method is mainly suitable for the treatment of organic pollutants with relatively low concentration, and the treatment of organic waste gas with strict environmental protection requirements and discharged into the atmospheric environment.

.

 　　③The absorption method The absorption method uses the organic waste gas treatment technology constructed by the principle of similar compatibility.
First, according to the composition of the pharmaceutical organic waste gas, a suitable liquid absorption liquid is selected; then the pharmaceutical organic waste gas is passed through the liquid absorption liquid, and the organic waste gas in the organic waste gas.
The solubility of various pollutants in the liquid absorbing liquid is different, and the harmful pollutants can be separated from the organic waste gas and recovered to relatively purify a lot of organic waste gas analysis gas
.

After preliminary treatment, the equilibrium partial pressure of harmful pollutants in the liquid absorbing liquid is generally lower than the equilibrium partial pressure of organic matter in the desorption gas of organic waste gas
.

If the decomposed gas of organic waste gas fails to meet the emission standards, activated carbon or activated carbon fiber adsorption device can be added in the subsequent treatment for adsorption treatment again to ensure that the emissions meet the emission standards
.

Common liquid absorbing liquids include surfactants, water, liquid petroleum mixtures, or mixtures of various liquid absorbing liquids
.

 　　④Regenerative thermal oxidation decomposition method There are many organic compounds in pharmaceutical organic gas, which can be treated by heating and oxidative degradation
.

The whole set of treatment mode of regenerative thermal oxidation decomposition method can recycle heat energy to the maximum extent, avoid heat energy loss as much as possible, and have a high heat recovery rate
.

RTO is mainly suitable for treating pharmaceutical organic waste gas with large air volume, not too high concentration, complex and changeable organic waste gas composition, or which can poison the catalyst or degrade the activity of the catalyst, thereby affecting the performance of the catalyst
.

 　　⑤ Catalytic combustion method Catalytic combustion method mainly uses catalyst to deal with the treatment technology of pharmaceutical organic waste gas
.

Pharmaceutical organic waste gas contains complex and various hydrocarbons, most of which can be oxidized into carbon dioxide and water under the action of catalysts when the reaction temperature is reached
.

This treatment technology has certain restrictions on the organic waste gas introduced into the catalytic combustion device, and the catalyst can fully play a catalytic role, which is the key to the effectiveness of this method.
Recycle
.

This method is mainly suitable for treating organic waste gas with high concentration, complex composition and strong catalytic flammability
.

 　　It is worth mentioning that due to the complex composition of waste gas in the pharmaceutical industry, traditional waste gas treatment technologies have many drawbacks.
Therefore, enterprises need to focus on specific treatment, and select reasonable treatment technologies based on the type of industrial waste gas to reduce waste gas pollution to a greater extent.

.

At the same time, in order to ensure the effect of waste gas treatment in the pharmaceutical industry, it is necessary to continuously promote the innovation and improvement of waste gas treatment technology, and promote the development of pharmaceutical industry production to a higher level
.

 　　From June 2nd to 4th, 2021, the 2021 World Environmental Protection Exhibition [International Environmental Protection Exhibition] will be grandly opened at the Shanghai National Convention and Exhibition Center (Hongqiao).
The exhibition covers comprehensive management, water, atmosphere, smart environmental protection, environmental monitoring, Resource regeneration, soil, noise 8 major environmental pollution control areas, relying on its own large-scale environmental protection exhibition resources, the platform will provide practical and efficient cooperation opportunities for buyers and sellers in the environmental protection industry.
An ecological closed loop of the environmental protection industry chain that integrates solutions to service platforms
.

 　　In addition, facing the needs of China's volatile organic compounds (VOCs) management, in order to better build an industry-university-research exchange platform, promote the emission reduction of VOCs in the Yangtze River Delta region and improve the quality of the ecological environment, the Yangtze River Delta VOCs Management Industry-University-Research Alliance, East China University of Technology The University VOCs Governance Alumni Association, together with Shanghai Yigong Environmental Protection Technology Co.
, Ltd.
and Shanghai Gongyi Information Technology Co.
, Ltd.
, will co-host the "Yangtze River Delta Pharmaceutical Air Emission Integration-VOCs Joint Prevention and Control Development Forum", inviting domestic and foreign professionals and scholars Share experience with entrepreneurs and jointly promote the scientific governance of VOCs
.

For pharmaceutical companies troubled by the exhaust gas of the pharmaceutical industry, I believe this will be an event not to be missed!