CN105089001B - Treatment method of PM2.5 in suburban areas of Beijing - Google Patents

Abstract

The invention relates to a method for controlling PM2.5 in the suburbs of Beijing. The method is to spray a solution containing a haze agent and ozone at a height of 200-500m in the suburbs of Beijing. The content of the haze agent is 0.5-5kg/L and the ozone The content is 0.05‑0.1g/L. The invention can not only bring fresh natural wind to Beijing, let people have a fresh and clean living environment, but also reduce the occurrence of mass public health incidents caused by excessive bacteria and microorganisms in the air, decompose harmful substances in time, and transport Fresh air can reduce the secondary damage caused by smog to people, and provide a strong guarantee for the safety of public places. It is of great significance and value to build a civilized and harmonious society. Improving the happiness index in the city can allow more residents to participate Outdoor sports can keep residents healthy and reduce the incidence of disease.

Description

A treatment method for PM2.5 in the suburbs of Beijing

technical field

The invention relates to the field of air purification, in particular to a treatment method for PM2.5 in the suburbs of Beijing.

Background technique

PM2.5 is a kind of fine particulate matter, also known as fine particles or fine particles, which refers to those particles in the atmosphere whose particle size is less than 2.5 microns. This kind of fine particles accounts for a small proportion of atmospheric components, can stay in the atmosphere for a long time, and can spread to far away places, seriously affecting the visibility and quality of the atmosphere. In the newly revised "Ambient Air Quality Standards" released by the State Council in February 2012, "fine particulate matter" in the air has become a new monitoring indicator.

Generally speaking, there are three main sources of PM2.5 in cities. Take Beijing as an example: 1. The introduction of external pollution; Neighboring Shanxi is also a very important energy base in China, because the energy mining and refining in these cities produces a large amount of waste gas and fine particles, which flow southward with the cold wind in winter, which is the main source of air pollution in Beijing, such as Hohhot, Baotou, and Datong Many of these cities are large projects related to the national economy and the people's livelihood, such as coal, electricity, cement, chemical industry, etc.; 2. The cities themselves generate pollution, and the real estate and infrastructure construction sites in urban areas are located in many places. Dust from construction sites is also one of the main causes of haze. In addition, the rapid increase in the number of motor vehicles in cities emits a large amount of volatile organic compounds every year. At the same time, motor vehicle exhaust easily forms secondary pollutants, photochemical smog. Main reason; 3. Extreme weather, meteorological influence, affected by large-scale weather background, meteorological conditions such as small wind and calm wind near the ground are not conducive to the diffusion of pollutants, but the continuous southerly airflow brings some pollutants in Hebei and Shandong into the background , The north-south attack caused severe air pollution in Beijing.

After research, medical experts and meteorological experts agree that the damage caused by fine particles in the atmosphere to the human body is even more serious than that of sandstorms. Fine particles can also cause various diseases in the human body, such as heart disease, arteriosclerosis, lung sclerosis, Deadly diseases such as lung cancer, asthma and chronic bronchitis. The higher the concentration of PM2.5, the more fine particles floating in the air that can enter the lungs of the human body, and the resistance of the person will decrease, which will greatly increase the incidence of disease.

Chinese Patent Publication No. CN103736379A, published on April 23, 2014, titled Solution to PM2.5, washes away smoke and dust from pollution sources. The application discloses a solution to PM2.5, which is to eliminate harmful The material is washed off with a solvent so that it cannot be released into the atmosphere. Its disadvantage is that this method is not suitable for cities in the north such as Beijing, the cost of solving PM2.5 hazards is relatively high, and there is no solution for the formed PM2.5 fine particles.

Contents of the invention

The object of the present invention is to provide a kind of PM2.5 control method in the suburbs of Beijing that reduces PM2.5 content in order to solve the PM2.5 pollution, great harm to human health, and difficulty in controlling PM2.5.

In order to achieve the above object, the present invention adopts the following technical solutions:

A control method for PM2.5 in the suburbs of Beijing, the method is to spray a solution containing a haze agent and ozone at a height of 200-500m in the suburbs of Beijing, the content of the haze agent is 0.5-5kg/L, and the content of ozone is 0.05 -0.1g/L. In this technical solution, the particulate matter that blows with the wind from the northwest to form smog is intercepted outside the suburbs of Beijing, reducing the sources of smog in the urban area of Beijing. On the one hand, it can bring fresh natural wind to Beijing and let people have a fresh air. A clean living environment, on the other hand, can reduce the occurrence of mass public health incidents caused by excessive bacteria and microorganisms in the air, decompose harmful substances in a timely manner, deliver fresh air, and reduce the secondary damage caused by smog to people. The safety of the place provides a strong guarantee, which is of great significance and value to the construction of a civilized and harmonious society. Improving the happiness index in the city can allow more residents to participate in outdoor sports, keep residents healthy and reduce the incidence of morbidity.

As preferably, when the PM2.5 value is 150-250 μg/m³, the consumption of the haze agent is 3.5-5kg/L, and when the PM2.5 value is 75-150 μg/m³, the consumption of the haze agent is 1-3.49 kg/L, when the PM2.5 value is 35-75μg/m³, the dosage of the haze agent is 0.5-1kg/L. In this technical scheme, the consumption of the haze suppressing agent is selected according to the variation of the PM2.5 value.

As a preference, the haze suppressing agent is prepared by the following method, 45-50 parts by weight of vegetable dregs or peels, 8-12 parts by weight of tea leaves, 5-10 parts by weight of mushrooms, 5-9 parts by weight of fermented Agent and 75-100 parts of clear water are fermented for 4-6 months and then filtered.

As a preference, a moat surrounding Beijing is set up in the suburbs of Beijing with a width of 5-6m. In this technical solution, the particles can sink in the moat, thereby entering the ecological cycle.

As preferably, use the airplane to spray the solution containing the haze suppressing agent and ozone or use the ultra-high mist spray system to spray the solution containing the haze suppressing agent and ozone.

As a preference, the ultra-high mist spray system includes a foundation base set on the ground, a high-pressure liquid pump, an electric control device connected to the high-pressure liquid pump, a PM2.5 monitoring device connected to the electric control device, a nozzle pipe and a horizontally rotatable nozzle , the height of the nozzle is 200-500m. In this technical solution, the solution of haze suppressant and ozone is sprayed at high altitude in the suburbs of Beijing, which can strengthen air convection, generate wind speed, increase air convection, and break the stability of PM2.5 aerosol in the temperature inversion layer, and simultaneously After the PM2.5 is intercepted, it will settle quickly.

The beneficial effects of the present invention are:

1) The invention can reduce PM2.5 by more than 30%, reduce the source of smog in Beijing urban area, and alleviate the urban heat island effect, save energy by more than 20% in refrigeration, reduce the washing rate by more than 30%, and reduce the incidence of respiratory diseases among residents More than 30%;

2) The invention can not only bring fresh natural wind to Beijing, let people have a fresh and clean living environment, but also reduce the occurrence of mass public health incidents caused by excessive bacteria and microorganisms in the air, and decompose harmful substances in time , deliver fresh air, reduce the secondary damage caused by smog to people, and provide a strong guarantee for the safety of public places. It is of great significance and value to build a civilized and harmonious society. Improving the happiness index in the city can make more Residents participate in outdoor sports to keep residents healthy and reduce morbidity.

Description of drawings

Figure 1 is a schematic diagram of the structure of the ultra-high mist spray system.

In the figure, 1. Foundation base; 2. High-pressure liquid pump; 3. Electric control device; 4. PM2.5 monitoring device; 5. Nozzle pipe; 6. Nozzle.

detailed description

The present invention will be further explained below by specific embodiment:

Example 1

With reference to Fig. 1, a kind of control method of Beijing suburban PM2.5, this method is to spray the solution that contains haze accumulating agent and ozone at the height of 2000m in Beijing suburb, the content of accumulating haze agent is 0.5kg/L, and the content of ozone is 0.05g/L; build a moat around Beijing in the suburbs of Beijing, with a width of 5-6m. Use airplanes to spray solutions containing haze agents and ozone;

When the PM2.5 value is 150-250μg/m³, the dosage of the haze agent is 3.5-5kg/L; when the PM2.5 value is 75-150μg/m³, the dosage of the haze agent is 1-3.49kg/L , when the PM2.5 value is 35-75μg/m³, the dosage of the haze agent is 0.5-1kg/L. The haze-reducing agent is prepared by the following method: 45 parts by weight of vegetable dregs or peels, 8 parts by weight of tea leaves, 5 parts by weight of mushrooms, 5 parts by weight of starter and 75 parts of clear water are fermented for 4 months and then filtered get.

Example 2

With reference to Fig. 1, a kind of control method of Beijing suburb PM2.5, this method is to spray the solution that contains haze accumulating agent and ozone at 200m place in Beijing suburb, the content of accumulating haze agent is 3kg/L, and the content of ozone is 0.08 g/L; set up a moat around Beijing in the suburbs of Beijing, with a river width of 5-6m; use an ultra-high fog spray system to spray solutions containing haze agents and ozone; the ultra-high fog spray system includes foundation bases set on the ground 1, high pressure Liquid pump 2, electronic control device 3 connected to high-pressure liquid pump 2, PM2.5 monitoring device 4 connected to electronic control device 3, nozzle 5 and horizontally rotatable nozzle 6, the height of the nozzle 5 is 200m ;Set up a super high fog spray system every 150 kilometers in the suburbs of Beijing; when the PM2.5 value is 150-250μg/m³, the dosage of the haze agent is 3.5-5kg/L, and when the PM2.5 value is 75-150μg When the PM2.5 value is 35-75μg/m³, the dosage of the haze agent is 0.5-1kg/L. The haze-reducing agent is prepared by the following method: 48 parts by weight of vegetable dregs or peels, 10 parts by weight of tea leaves, 7 parts by weight of mushrooms, 6 parts by weight of starter and 85 parts of clear water are fermented for 5 months and then filtered get.

Example 3

With reference to Fig. 1, a kind of control method of Beijing suburban PM2.5, this method is to spray the solution that contains haze accumulating agent and ozone at 500m place in Beijing suburb, the content of accumulating haze agent is 5kg/L, and the content of ozone is 0.1 g/L; set up a moat around Beijing in the suburbs of Beijing, with a river width of 5-6m; use an ultra-high fog spray system to spray solutions containing haze agents and ozone; the ultra-high fog spray system includes foundation bases set on the ground 1, The high-pressure liquid pump 2, the electric control device 3 connected with the high-pressure liquid pump 2, the PM2.5 monitoring device 4 connected with the electric control device 3, the nozzle 5 and the horizontally rotatable nozzle 6, the height of the nozzle 5 is 500m; set up an ultra-high fog spray system every 200 kilometers in the suburbs of Beijing; when the PM2.5 value is 150-250μg/m³, the dosage of the haze agent is 3.5-5kg/L, and when the PM2.5 value is 75- When the PM2.5 value is 35-75μg/m³, the dosage of the haze suppressant is 0.5-1kg/L. The haze suppressing agent is prepared by the following method: 50 parts by weight of vegetable dregs or peels, 12 parts by weight of tea leaves, 10 parts by weight of mushrooms, 9 parts by weight of starter and 100 parts of clear water are fermented for 6 months and then filtered get.

The invention reduces PM2.5 by more than 30%, can reduce the source of smog in the urban area of Beijing, can also alleviate the urban heat island effect, save energy by more than 20% in refrigeration, reduce washing rates by more than 30%, and reduce the incidence of respiratory diseases among residents by 30% above;

The invention can not only bring fresh natural wind to Beijing, let people have a fresh and clean living environment, but also reduce the occurrence of mass public health incidents caused by excessive bacteria and microorganisms in the air, decompose harmful substances in time, and transport Fresh air can reduce the secondary damage caused by smog to people and provide a strong guarantee for the safety of public places. It is of great significance and value to build a civilized and harmonious society. Improving the happiness index in the city can allow more residents to participate Outdoor sports can keep residents healthy and reduce the incidence of disease.

Claims (6)

1. a kind of administering method of Beijing suburb PM2.5 it is characterised in that the method be Beijing suburb height be 200- The solution containing volt haze agent and ozone is sprayed, the content of volt haze agent is 0.5-5kg/L, the content of ozone is 0.05- at 2000m 0.1g/L；The haze agent of described volt is obtained by following methods, by the vegetables slag of 45-50 weight portion or peel, the Folium Camelliae sinensis of 8-12 weight portion, The mushroom of 5-10 weight portion, the leaven of 5-9 weight portion and 75-100 part clear water fermentation 4-6 were filtrated to get after individual month.

2. a kind of administering method of Beijing suburb PM2.5 according to claim 1 is it is characterised in that when PM2.5 value is During 150-250 μ g/m, the consumption of volt haze agent is 3.5-5kg/L, when PM2.5 value is for 75-150 μ g/m, the consumption of volt haze agent For 1-3.49kg/L, when PM2.5 value is for 35-75 μ g/m, the consumption of volt haze agent is 0.5-1kg/L.

3. a kind of administering method of Beijing suburb PM2.5 according to claim 1 is it is characterised in that set in Beijing suburb Vertical cincture Pekinese moat, river width 5-6m.

4. a kind of administering method of the Beijing suburb PM2.5 according to claim 1 or 2 or 3 flies it is characterised in that using Machine sprays and sprays the solution containing volt haze agent and ozone containing volt haze agent with the solution of ozone or using superelevation spray system.

5. a kind of administering method of Beijing suburb PM2.5 according to claim 4 is it is characterised in that superelevation spray system Including the sole plate being arranged on ground（1）, high pressure liquid pump（2）, and high pressure liquid pump（2）The electric control gear of link（3）, with automatically controlled Device（3）The PM2.5 supervising device of link（4）, jet pipe（5）With the nozzle that can horizontally rotate（6）, described jet pipe（5）Height For 200-500m.

6. a kind of administering method of Beijing suburb PM2.5 according to claim 5 is it is characterised in that every in Beijing suburb Every 150-200 kilometer, one superelevation spray system is set.