On the 17th, the Beijing Municipal Environmental Protection Bureau released the results of the APEC air quality assurance measures. The evaluation results show that the average PM2.5 concentration in the city is 43 μg/m3. If the city and surrounding areas do not jointly adopt the period guarantee measures, the PM2.5 concentration is expected to reach 69.5 μg/m3, which is higher than the actual concentration. Growth of 61.6%. stand mixer with bowl , roating stand mixer, mixer with rotating bowl Jiangmen Taifai Technology Co.,Ltd , https://www.glaremecn.com
The evaluation results show that for the reduction of PM2.5 concentration, the adoption of motor vehicle limit control measures can bring about the greatest comprehensive effect. The local contribution of motor vehicle emission reduction to the decline in PM2.5 concentration during the session was 39.5%. To this end, in the future, the treatment of motor vehicle pollution will continue to be the key direction for the deep control of air pollution, and continue to exert efforts in reducing the use of motor vehicles, raising new car standards, and eliminating old motor vehicles.
The Beijing Youth Daily reporter learned that during the APEC meeting, the Municipal Environmental Protection Bureau carried out an evaluation of the effectiveness of various air quality assurance measures. In the early stage, the expert group gave a scientific demonstration of the work plan and preliminary results, and announced the “Air Quality Assurance†to the public. Technical Report on the Initial Evaluation of the Effect of Measures.
The comprehensive emission reduction reduced the PM2.5 concentration by 60%. The actual concentration of fine particulate matter (PM2.5) in the air during the APEC meeting was 43 μg/m3. If the city and surrounding areas did not jointly adopt the meeting guarantee measures, The PM2.5 concentration is expected to reach 69.5 μg/m3, which is 61.6% higher than the actual concentration. In other words, due to the joint measures taken during the period, the PM2.5 concentration decreased by 26.5 μg/m3. Among them, the city's emission reduction measures reduced the concentration of PM2.5 by 19.8 micrograms per cubic meter, and the contribution of regional pollution transmission decreased by 6.8 micrograms per cubic meter.
On the whole, compared with the non-measures, the city has reduced emissions of sulfur dioxide, nitrogen oxides, respirable particulate matter (PM10), fine particulate matter (PM2.5) and volatile organic compounds (VOCs) by about 39.2%. 49.6%, 66.6%, 61.6% and 33.6%, with an average reduction of about 50%. In addition to the implementation of temporary emission reduction measures such as industrial suspension of production and motor vehicle single and double driving, the local emission reduction effects are mainly benefited from motor vehicle restrictions and control, coal-fired and industrial enterprises. Stop production, stop work at the construction site, strengthen road cleaning in the city, and take vacations.
Motor vehicle limit control and maximum contribution APEC air quality assurance measures effect evaluation results, for reducing PM2.5 concentration, the adoption of motor vehicle limit control measures can bring the greatest comprehensive effect. Due to the implementation of the motor vehicle single and double number limit, the forbidden line limit of the muck truck and the forbidden line restriction of the vehicles entering the Beijing and the bypass of the transit vehicles, the number of motor vehicles on the road will decrease and the average speed of the road network will increase. The total amount of pollutants discharged is significantly reduced, and the effect of the “mixer†is reduced, thereby reducing the generation of dust on the road surface. Based on the above measures, the local contribution of vehicle emission reduction to the decline of PM2.5 during the session was 39.5%. In addition, the contribution to the reduction of nitrogen oxides and volatile organic compounds is the external vehicles (especially heavy trucks, buses), and the contribution to the reduction of dust emissions is the ban on muck.
Rehabilitation holiday contribution 12.4%
Temporary vacation is the most comprehensive and direct impact on all types of production and living activities in the city. It can bring about changes in production and lifestyle, and can directly reduce air pollutant emissions.
According to the statistics of passenger traffic in and out of Beijing and the number of mobile phones in the network, some citizens leave Beijing during the holiday period, which reduces the resident population of the city by about 10%. Due to the holiday of the work unit and the school, the traffic volume of the city is lower than that before the holiday. About %; some industrial enterprises have suspended production, such as the suspension of production and operation of coal-fired boilers in the six districts of Huacheng and Huairou. The local contribution of these measures to the decline in PM2.5 during the meeting was 12.4%.
Outlook In the future, we will treat vehicle exhaust pollution as a key point. The relevant person in charge of the Municipal Environmental Protection Bureau said that through the experience of APEC protection, it can be seen that improving air quality and reducing emissions are the last word. During the APEC meeting, the city's major air pollutants were reduced by an average of 50%, which is the fundamental guarantee for achieving excellent air quality.
The results of the measures assessment show that for the reduction of PM2.5 concentration, the adoption of motor vehicle control measures can bring about the greatest comprehensive effect. To this end, in the future, the treatment of motor vehicle pollution should be the key direction for the deep control of air pollution, and continue to exert efforts in reducing the use of motor vehicles, improving new car standards, and eliminating old motor vehicles.
During the APEC meeting, air quality assurance measures have the characteristics of comprehensive policy and coordinated emission reduction, which ultimately reduces the intensity of pollution emissions caused by human activities. It must unswervingly accelerate the disintegration of non-capital core functions, strengthen industrial restructuring, and population. Source control measures such as total control and total construction scale control, to achieve the transfer of pollution control focus to source control.
In addition, we will accelerate the energy clean-up strategy, do our utmost to eliminate coal burning, reduce industrial pollution emissions, and further eliminate polluting enterprises that do not conform to the capital's functions (especially key enterprises of volatile organic compounds emissions), and manage the city with the world's most stringent standards. industrial pollution.