As follows:
In addition to sandstorms, forest fires and seawater splashing from nature, PM2.5 mainly comes from industrial production, road dust, building dust and energy combustion used by human production and life. The sources of PM2.5 are very complicated, including fine particles directly discharged from coal-fired and oil-fired motor vehicle exhaust, road dust, construction dust, industrial dust, catering fumes, garbage incineration, straw incineration and so on.
There are also secondary fine particles produced by complex chemical reactions such as sulfur dioxide, nitrogen oxides and volatile organic compounds in the air. Controlling the source and strengthening industrial dust control are important sources of fine particulate matter PM2.5. The prevention and control of PM2.5 should start from the source, adopt comprehensive control strategies, improve existing dust removal technologies and equipment, and strictly control dust pollution caused by industrial production.
The existing industrial dust removal technologies include traditional closed dust removal, filtration dust removal, electrostatic dust removal, water spraying or spray dust removal, etc. The new technology is mainly represented by BME biomembrane dust removal technology. The traditional dust removal technology is to control and collect dust through various methods after it is produced, and the new dust removal technology represented by biological nano-film dust suppression mainly focuses on controlling dust production from the source.
Controlling dust emission from the source can greatly improve dust removal efficiency and reduce energy consumption. Developed countries such as Europe and the United States also generally adopt the strategy of comprehensive management, starting from the source, taking measures to reduce the primary PM2.5, and at the same time strengthening the dust management of construction sites and roads. BME's unique bio-nano membrane technology has been applied in some large mines and industrial groups in China.
It can effectively prevent and control PM2.5 pollution, successfully help enterprises to improve their working environment and reach national health and environmental protection standards. Improve the energy consumption structure, improve energy utilization efficiency, change the energy consumption structure, vigorously develop clean energy such as nuclear power, hydropower, biogas and solar energy, increase the use of clean energy, and increase the proportion of renewable energy in the primary energy consumption structure.
Reduce pollutant emissions caused by burning fossil fuels such as coal and oil. Control exhaust emissions, improve vehicle emission standards, and control vehicle exhaust emissions, especially motor vehicles that use diesel as fuel.
It is also a common practice in major cities all over the world to actively develop urban transportation with public transport as the mainstay, promote the construction of public transport infrastructure, and reduce residents' dependence on motor vehicles, thereby reducing fuel consumption and reducing air pollutants such as PM2.5 emitted by automobile exhaust.