The content of air pollution prevention and control is very rich, comprehensive and systematic, involving many aspects such as environmental planning and management, energy utilization, and pollution prevention and control. As the characteristics and conditions of air pollution in different regions (or cities) and the direction and focus of comprehensive air pollution prevention and control are different, it is difficult to find comprehensive prevention and control measures suitable for all situations. Therefore, it is necessary to put forward corresponding countermeasures according to local conditions.
Atmospheric environment refers to the physical, chemical and biological characteristics of the air on which organisms live. Harmful gases such as ammonia, sulfur dioxide, carbon monoxide, nitride and fluoride discharged from human life or industrial and agricultural production can change the composition of the original air, cause pollution, cause global climate change, and disrupt ecological balance. The atmospheric environment is closely related to human survival. Almost every factor in the atmospheric environment can affect humans. After all, humans cannot exist independently of the atmospheric environment. The quality of the atmospheric environment is a powerful guarantee for human health activities. Therefore, we must implement sustainable development, pay attention to people's livelihood, increase the control of atmospheric pollution, and give people an environment with fresh air and fresh air.
Air pollutants refer to those substances that are discharged into the atmosphere due to human activities or natural processes and have harmful effects on humans or the environment. There are many types of air pollutants, which can be divided into aerosol pollutants and gaseous pollutants according to their existing characteristics.
Aerosol pollutants
In air pollution, aerosol refers to the solid particles and liquid particles in the air, or the suspension of solid and liquid particles in a gas medium. According to the source and physical properties of aerosol, it can be divided into dust, smoke, fly ash, black smoke and fog.
Gaseous pollutants
The gaseous pollutants in the atmosphere are also called gaseous pollutants, which exist in the state of molecules. There are many types of gaseous pollutants, most of which are inorganic gases. There are 5 common types: sulfur-containing compounds mainly composed of sulfur dioxide; nitrogen compounds mainly composed of nitrogen monoxide and nitrogen dioxide; the third are carbon oxides, such as carbon monoxide and carbon dioxide; the fourth is hydrocarbons, Such as alkanes, alkenes) and aromatic hydrocarbons; the fifth is halogen compounds, such as HF, HCl and so on.
