Waste transfer station exhaust gas treatment UV UV lamp technology

Application of ultraviolet light-catalyzed exhaust gas UV lamp in waste gas treatment and deodorization of refuse transfer station
TT exhaust gas treatment / (finishing)

Garbage is a solid waste generated in daily life and production of human beings. Due to its large discharge volume, its composition is complex and diverse, and it is polluting, resourceful and social. It needs harmlessness, resource utilization, reduction and social treatment. If it is not properly handled, it will pollute the environment, affect environmental sanitation, waste resources, destroy production and life safety, and undermine social harmony. Garbage disposal is to quickly remove the garbage and carry out harmless treatment, and finally make reasonable use. The widely used waste treatment methods today are sanitary landfill, high temperature incineration and composting. The purpose of waste disposal is harmless, resourceful and reduced.

Three main waste treatment methods

1. Landfill

Landfill is an effective method for massaging urban domestic waste, and it is also the final treatment method for all waste treatment process residues. At present, direct landfill method is widely used in China.

The so-called direct landfill method is to fill the prepared pits with compacted materials to make biological, physical and chemical changes, and to decompose organic matter to achieve the purpose of reduction and harmlessness.

The landfill treatment method is one of the most common waste treatment methods. Its biggest feature is low treatment cost and simple method, but it is easy to cause secondary pollution of groundwater resources. As the amount of urban waste increases, the number of suitable landfill sites close to the city is becoming less and less. Opening up long-distance landfill sites has greatly increased the cost of garbage discharge, which is unaffordable.

2. Incineration

Incineration is a method in which waste is placed in a high-temperature furnace to fully oxidize combustible components, and the heat generated is used for power generation and heating. At present, the more advanced garbage conversion energy system can turn waste with a humidity of 7% into a dry solid for incineration, and the incineration efficiency is over 95%. At the same time, the high temperature on the surface of the incinerator can convert thermal energy into steam, which can be used for heating and air conditioning. Equipment and steam turbine power generation.

The advantage of incineration treatment is that the reduction effect is good (the residue volume after incineration is reduced by more than 90%, the weight is reduced by more than 80%), and the treatment is thorough. However, the construction and production costs of incineration plants are relatively expensive. In most cases, the value of the electrical energy generated by these equipments is much lower than the operating costs, leaving the local government with huge economic losses. Since the garbage contains certain metals, incineration is highly toxic and causes secondary environmental pollution. Environmental pollution and superficial long-term damage mainly include air pollution after garbage burning. Among these types of pollution are mainly:

(1) Contamination of toxic and hazardous substances produced by chemical products during high-temperature incineration.

(2) Contamination of toxic and hazardous substances (including sulfides, carbides, etc.) in the air.

(3) The emission of automobile fuel combustion materials and the environmental pollution caused by chemical waste generated by the automobile industry, the heavy pollution of diesel automobile exhaust and the low amount of chronic pollution.

(4) Domestic garbage is contaminated by other toxic and harmful substances generated during combustion.

The comprehensive pollution of cities is becoming more and more serious. In the process of urbanization, there are geological environment and air pollution control problems. The geological pollution caused by urban landfill disposal and the air pollution caused by incineration of garbage are the two most important indicators.

Incineration is a municipal waste treatment technology widely used in various countries around the world. A large-scale waste incineration treatment system equipped with a heat recovery and utilization device is gradually becoming the mainstream of incineration treatment because it meets the requirements for recycling energy. Developed countries in foreign countries, especially Japan and Western Europe, are generally committed to promoting the application of waste incineration technology. The wide application of foreign incineration technology, in addition to benefiting from economic development, strong investment, and high calorific value of waste, is mainly due to the maturity and advancedness of incineration technology and equipment. Many famous companies in the world have invested in the development of incineration technology and equipment, and the main equipment and auxiliary equipment are shaped and matched. Foreign industrialized countries are mainly committed to improving the original incinerators and developing new incinerators, so that they are developing in the direction of high efficiency, energy saving, low cost and low pollution, and the degree of automation is getting higher and higher.

The exhaust gas treatment device newly developed by Shanxi TT Waste Gas Treatment and Environmental Protection Technology Center can be widely used in various organic waste gas and malodorous gas purification treatments through reasonable module configuration. This equipment does not have any mechanical devices, no motion noise, and can work continuously 24 hours a day. In addition to regular inspection and maintenance, no special personnel management and operation are required, maintenance and energy consumption costs are low, and the purification treatment effect is superior to national standards.

3, composting

The domestic garbage is piled up in piles, stored at 70 ° C for storage and fermentation, and the organic matter is decomposed into inorganic nutrients by the ability of microorganisms to be decomposed in the garbage. After composting, the domestic garbage becomes a hygienic and odorless humus. It not only solves the way out of garbage, but also achieves the goal of re-recycling. However, the amount of compost is large and the nutrient content is low. The long-term use is likely to cause soil compaction and groundwater quality deterioration. Therefore, the scale of composting is not too large.

With the advancement of society, people's living standards have improved, the garbage components have become more complex, and organic and synthetic materials have increased. This status quo requires that the waste disposal technology should be transformed from a single destruction method to a comprehensive treatment of multiple methods, mutual assistance and joint processing. Only in this way can we turn waste into waste and provide resources for the society. There are many ways to dispose of garbage, but each method is not perfect and has certain defects. In the garbage disposal, no matter how to deal with it, then we must learn the concept of protecting the environment. If everyone can take the initiative to protect the environment, then I don’t think the country has to spend so much energy to solve this problem. People can also guarantee the quality of their own living environment, so we can't know that the light depends on the government, and we also rely on ourselves.

Garbage is considered to be the most promising and inexhaustible “urban deposit” and “a misplaced resource”. This is not only the deepening and deepening of the understanding of garbage, but also the inevitable requirement of urban development.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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