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Rural Domestic Waste Treatment - Microbial Deodorization Technology
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Rural Domestic Waste Treatment - Microbial Deodorization Technology

(Summary description) The treatment of industrial waste gas can be divided into dust removal, desulfurization and denitrification technology, and VOC removal of organic waste gas according to different pollutants. No secondary pollution and other aspects to evaluate technical equipment. At present, there are not many professional units engaged in waste gas treatment and control in my country, and they do not have the comprehensive capabilities of overall project planning, engineering design, equipment manufacturing, system integration and operation management. Therefore, unit operation is still the mainstream of treatment methods. Industrial waste gas treatment pollution is mainly caused by human burning fossil fuels (coal and oil) in the process of production and living activities, rock drilling, blasting during mining, crushing and screening of building materials, smelting and casting, etc. Air pollutants mainly include dust particles, carbon dioxide, sulfur dioxide or nitrogen oxides. The technologies for treating pollutants in industrial waste gas are different for different pollutants: 1. Industrial waste gas treatment technology for particulate pollutants According to the particle size of particulate pollutants, industrial waste gas treatment methods mainly include dry method, wet method, filtration and electrostatic method. The most commonly used are bag filter (filter), cyclone filter (dry method), foam filter (wet method) etc. With the improvement of dust removal efficiency requirements, electrostatic dust removal has gradually begun to be used. 2. Nitrogen and sulfur oxide treatment technology Air pollution occurs because there are a large amount of nitrogen oxides and sulfur oxides in the atmosphere, and one after another pollution incident occurs. According to the nature of these oxides, scientists have proposed technologies to solve pollution including absorption method, adsorption method, condensation method, catalytic conversion method, combustion method, biological purification method, membrane separation method and dilution method. The most commonly used method is the absorption method. The exhaust gas passes through the absorption tower and exchanges with the absorption liquid flowing down from the top of the tower, so that the components in the absorption liquid chemically react with the harmful components in the exhaust gas, reducing the harmful components in the exhaust gas. Finally, when the exhaust gas comes out from the top of the tower, it has become a clean gas. This pollution control method is simple, less investment and convenient to operate. Treatment of organic waste gas: 1. Waste gas treatment and isolation method: It is through special filter material, placed in the process of waste gas efflux, and mechanically isolated, so as to achieve the effect of waste gas treatment. Advantages: high efficiency in the treatment of aerosol rubber smoke, no technical requirements, and simple operation. Disadvantages: can not effectively remove organic matter, large wind resistance. 2. Exhaust gas treatment combustion method: Using the method of heating at high temperature, the organic waste gas is directly burned to achieve the purpose of waste gas purification. Advantages: high purification efficiency, up to more than 95%. Disadvantages: It requires a lot of heat energy, consumes a lot of energy, and it is easy to generate NOX at high temperature and cause secondary pollution. 3. Waste gas treatment and absorption method: The absorption liquid and the exhaust gas are in contact with each other, so that the harmful substances in the exhaust gas are dissolved into the absorption liquid, so that the exhaust gas can be purified. Absorbed liquid is handled separately. Advantages: small investment, low operating cost, simple operation. Disadvantages: low treatment efficiency, unstable, low purification efficiency, about 50%, difficult to meet relevant environmental protection requirements, suitable for low-concentration organic waste gas, with secondary pollution. 4. Exhaust gas treatment condensation method: Through condensation cooling, when the temperature is lower than the condensation point of harmful substances, the gaseous harmful substances are converted into liquid, separated from the air, and purified. Advantages: stable operation and high purification efficiency. Disadvantages: large investment, high requirements for the environment and operators, excessive energy consumption, and high operating costs. 5. Activated carbon adsorption device adsorption method: Using porous activated carbon, silicon bath soil, anthracite and other molecular-level large surface residual energy, organic gas molecules are adsorbed to its surface to purify. Advantages: high treatment efficiency (activated carbon adsorption can reach more than 99%), wide application, simple operation, low investment cost and relatively low operating cost. Disadvantages: The system wind pressure loss is large, the satur

Rural Domestic Waste Treatment - Microbial Deodorization Technology

(Summary description)
The treatment of industrial waste gas can be divided into dust removal, desulfurization and denitrification technology, and VOC removal of organic waste gas according to different pollutants. No secondary pollution and other aspects to evaluate technical equipment. At present, there are not many professional units engaged in waste gas treatment and control in my country, and they do not have the comprehensive capabilities of overall project planning, engineering design, equipment manufacturing, system integration and operation management. Therefore, unit operation is still the mainstream of treatment methods.

Industrial waste gas treatment pollution is mainly caused by human burning fossil fuels (coal and oil) in the process of production and living activities, rock drilling, blasting during mining, crushing and screening of building materials, smelting and casting, etc. Air pollutants mainly include dust particles, carbon dioxide, sulfur dioxide or nitrogen oxides.

The technologies for treating pollutants in industrial waste gas are different for different pollutants:

1. Industrial waste gas treatment technology for particulate pollutants

According to the particle size of particulate pollutants, industrial waste gas treatment methods mainly include dry method, wet method, filtration and electrostatic method. The most commonly used are bag filter (filter), cyclone filter (dry method), foam filter (wet method) etc. With the improvement of dust removal efficiency requirements, electrostatic dust removal has gradually begun to be used.

2. Nitrogen and sulfur oxide treatment technology

Air pollution occurs because there are a large amount of nitrogen oxides and sulfur oxides in the atmosphere, and one after another pollution incident occurs. According to the nature of these oxides, scientists have proposed technologies to solve pollution including absorption method, adsorption method, condensation method, catalytic conversion method, combustion method, biological purification method, membrane separation method and dilution method. The most commonly used method is the absorption method. The exhaust gas passes through the absorption tower and exchanges with the absorption liquid flowing down from the top of the tower, so that the components in the absorption liquid chemically react with the harmful components in the exhaust gas, reducing the harmful components in the exhaust gas. Finally, when the exhaust gas comes out from the top of the tower, it has become a clean gas. This pollution control method is simple, less investment and convenient to operate.

Treatment of organic waste gas:

1. Waste gas treatment and isolation method:

It is through special filter material, placed in the process of waste gas efflux, and mechanically isolated, so as to achieve the effect of waste gas treatment.

Advantages: high efficiency in the treatment of aerosol rubber smoke, no technical requirements, and simple operation.

Disadvantages: can not effectively remove organic matter, large wind resistance.

2. Exhaust gas treatment combustion method:

Using the method of heating at high temperature, the organic waste gas is directly burned to achieve the purpose of waste gas purification.

Advantages: high purification efficiency, up to more than 95%.

Disadvantages: It requires a lot of heat energy, consumes a lot of energy, and it is easy to generate NOX at high temperature and cause secondary pollution.

3. Waste gas treatment and absorption method:

The absorption liquid and the exhaust gas are in contact with each other, so that the harmful substances in the exhaust gas are dissolved into the absorption liquid, so that the exhaust gas can be purified. Absorbed liquid is handled separately.

Advantages: small investment, low operating cost, simple operation.

Disadvantages: low treatment efficiency, unstable, low purification efficiency, about 50%, difficult to meet relevant environmental protection requirements, suitable for low-concentration organic waste gas, with secondary pollution.

4. Exhaust gas treatment condensation method:

Through condensation cooling, when the temperature is lower than the condensation point of harmful substances, the gaseous harmful substances are converted into liquid, separated from the air, and purified.

Advantages: stable operation and high purification efficiency.

Disadvantages: large investment, high requirements for the environment and operators, excessive energy consumption, and high operating costs.

5. Activated carbon adsorption device adsorption method:

Using porous activated carbon, silicon bath soil, anthracite and other molecular-level large surface residual energy, organic gas molecules are adsorbed to its surface to purify.

Advantages: high treatment efficiency (activated carbon adsorption can reach more than 99%), wide application, simple operation, low investment cost and relatively low operating cost.

Disadvantages: The system wind pressure loss is large, the satur

Information

The treatment of industrial waste gas can be divided into dust removal, desulfurization and denitrification technology, and VOC removal of organic waste gas according to different pollutants. No secondary pollution and other aspects to evaluate technical equipment. At present, there are not many professional units engaged in waste gas treatment and control in my country, and they do not have the comprehensive capabilities of overall project planning, engineering design, equipment manufacturing, system integration and operation management. Therefore, unit operation is still the mainstream of treatment methods.

Industrial waste gas treatment pollution is mainly caused by human burning fossil fuels (coal and oil) in the process of production and living activities, rock drilling, blasting during mining, crushing and screening of building materials, smelting and casting, etc. Air pollutants mainly include dust particles, carbon dioxide, sulfur dioxide or nitrogen oxides.

The technologies for treating pollutants in industrial waste gas are different for different pollutants:

1. Industrial waste gas treatment technology for particulate pollutants

According to the particle size of particulate pollutants, industrial waste gas treatment methods mainly include dry method, wet method, filtration and electrostatic method. The most commonly used are bag filter (filter), cyclone filter (dry method), foam filter (wet method) etc. With the improvement of dust removal efficiency requirements, electrostatic dust removal has gradually begun to be used.

2. Nitrogen and sulfur oxide treatment technology

Air pollution occurs because there are a large amount of nitrogen oxides and sulfur oxides in the atmosphere, and one after another pollution incident occurs. According to the nature of these oxides, scientists have proposed technologies to solve pollution including absorption method, adsorption method, condensation method, catalytic conversion method, combustion method, biological purification method, membrane separation method and dilution method. The most commonly used method is the absorption method. The exhaust gas passes through the absorption tower and exchanges with the absorption liquid flowing down from the top of the tower, so that the components in the absorption liquid chemically react with the harmful components in the exhaust gas, reducing the harmful components in the exhaust gas. Finally, when the exhaust gas comes out from the top of the tower, it has become a clean gas. This pollution control method is simple, less investment and convenient to operate.

Treatment of organic waste gas:

1. Waste gas treatment and isolation method:

It is through special filter material, placed in the process of waste gas efflux, and mechanically isolated, so as to achieve the effect of waste gas treatment.

Advantages: high efficiency in the treatment of aerosol rubber smoke, no technical requirements, and simple operation.

Disadvantages: can not effectively remove organic matter, large wind resistance.

2. Exhaust gas treatment combustion method:

Using the method of heating at high temperature, the organic waste gas is directly burned to achieve the purpose of waste gas purification.

Advantages: high purification efficiency, up to more than 95%.

Disadvantages: It requires a lot of heat energy, consumes a lot of energy, and it is easy to generate NOX at high temperature and cause secondary pollution.

3. Waste gas treatment and absorption method:

The absorption liquid and the exhaust gas are in contact with each other, so that the harmful substances in the exhaust gas are dissolved into the absorption liquid, so that the exhaust gas can be purified. Absorbed liquid is handled separately.

Advantages: small investment, low operating cost, simple operation.

Disadvantages: low treatment efficiency, unstable, low purification efficiency, about 50%, difficult to meet relevant environmental protection requirements, suitable for low-concentration organic waste gas, with secondary pollution.

4. Exhaust gas treatment condensation method:

Through condensation cooling, when the temperature is lower than the condensation point of harmful substances, the gaseous harmful substances are converted into liquid, separated from the air, and purified.

Advantages: stable operation and high purification efficiency.

Disadvantages: large investment, high requirements for the environment and operators, excessive energy consumption, and high operating costs.

5. Activated carbon adsorption device adsorption method:

Using porous activated carbon, silicon bath soil, anthracite and other molecular-level large surface residual energy, organic gas molecules are adsorbed to its surface to purify.

Advantages: high treatment efficiency (activated carbon adsorption can reach more than 99%), wide application, simple operation, low investment cost and relatively low operating cost.

Disadvantages: The system wind pressure loss is large, the saturation point of the adsorbent is difficult to grasp, and the adsorbent capacity is limited.

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