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Garbage classification is a reform of traditional garbage collection and disposal methods and a scientific management method for effective garbage disposal. People are facing the situation of increasing garbage output and deteriorating environmental conditions. How to make the best use of garbage resources, reduce the amount of garbage disposal and improve the living environment through garbage classification management is an urgent problem that all countries in the world care about.
The reason for the increase of garbage is the improvement of people's living standards and the increase of various consumption. According to statistics, in 1979, China's urban garbage removal capacity was more than 25 million tons, and in 1996, the transportation fee of urban garbage was 1. 16 yuan/ton, which was four times that of 1979.
Garbage classification is to put garbage into the source, and make it become a resource again through sorting, cleaning and recycling.
The advantages of garbage sorting treatment are as follows:
First, reduce land erosion.
Some substances in domestic garbage are not easy to degrade, which makes the land seriously eroded. Garbage sorting, removing recyclable and non-degradable substances, reducing the amount of garbage by more than 60%.
Second, reduce pollution.
In China, sanitary landfill or even simple landfill is mostly used for garbage disposal, covering tens of thousands of acres; Moreover, insects and flies fly around, sewage overflows and stinks, which seriously pollutes the environment.
Waste plastics in soil will lead to crop yield reduction; Waste plastics are eaten by animals by mistake, resulting in accidents of animal death. So recycling can also reduce the harm.
Third, turn waste into treasure.
China uses 4 billion plastic fast food boxes, 500-700 million instant noodle bowls and billions of disposable chopsticks every year, accounting for 8- 15% of domestic garbage. 1 ton of waste plastics can recover 600kg of diesel oil. Recycling 1500 tons of waste paper can avoid cutting down trees used to produce 1200 tons of paper. A ton of cans can be melted to form a ton of good aluminum blocks, and 20 tons of aluminum ore can be mined less.
30%~40% of domestic garbage can be recycled, so we should cherish this small-scale and large-scale resource. You can also use cans as pencil boxes, which is environmentally friendly and saves resources.
Moreover, other substances in garbage can also be transformed into resources, such as food, vegetation, fabrics, etc., which can be composted to produce organic fertilizer; Garbage incineration can generate electricity, heat or cool; Bricks and lime soil can be processed into building materials and so on.
If we can fully tap the resource potential contained in the recycling of domestic waste, Beijing alone will get an economic benefit of 1 1000 billion yuan every year. It can be seen that the best way to solve the garbage problem is to classify and recycle the garbage generated in the consumption link in time.
abstract
The benefits of garbage sorting are obvious. After sorting, the garbage is sent to the factory instead of landfill, which not only saves land, but also avoids the pollution caused by landfill or incineration, and can also turn waste into treasure. In this battle between man and garbage, people turned garbage from enemies into friends.
Therefore, classified collection of garbage can reduce the quantity and equipment of garbage disposal, reduce the disposal cost and reduce the consumption of land resources, which has social, economic and ecological benefits.
Extended data:
Implementation situation
On March 2017 18, the General Office of the State Council issued the Implementation Plan of Domestic Waste Classification System formulated by the National Development and Reform Commission and the Ministry of Housing and Urban-Rural Development. It is planned that by the end of 2020, a system of laws, regulations and standards related to waste classification will be basically established, and compulsory classification of domestic waste will be implemented in the first batch of domestic waste classification demonstration cities such as municipalities directly under the central government, provincial capital cities and cities with separate plans.
Other first demonstration cities for domestic waste classification include Handan City in Hebei Province, Suzhou City in Jiangsu Province, Tongling City in Anhui Province, Yichun City in Jiangxi Province, Tai 'an City in Shandong Province, Yichang City in Hubei Province, Guangyuan City, Deyang City, Shigatse City in Xizang Autonomous Region and Xianyang City in Shaanxi Province.
The scheme requires that harmful waste (English) must be one of the compulsory classification categories, and other compulsory classification categories such as perishable garbage and recyclables can be selected.
20 1 9165438+1October 15 The Ministry of Housing and Urban-Rural Development issued a new version of the Standard for Classification and Labeling of Domestic Waste, which came into effect on June 65438+February/kloc-0. The new standard adjusts the categories of domestic waste into four categories: recyclables, harmful waste, kitchen waste and other wastes, and deletes three categories: bulky waste, combustible waste and compostable waste.
Because this standard is recommended and not mandatory, some cities (such as Shanghai) will not change their names and classification standards for the time being.
References:
Baidu encyclopedia-garbage classification