Hangzhou Garbage Classification Knowledge Competition (Garbage Classification Knowledge Competition Questions)

1. Garbage Classification Knowledge Competition Questions

The main classification of recyclable garbage mainly includes five categories: waste paper, plastic, glass, metal and cloth.

Waste paper: mainly includes newspapers, periodicals, books, various packaging papers, office paper, advertising paper, cartons, etc. However, it should be noted that paper towels and toilet paper cannot be recycled because they are too water-soluble. Plastics: Mainly include various plastic bags, plastic packaging, disposable plastic lunch boxes and tableware, toothbrushes, cups, mineral water bottles, toothpaste wrappers, etc.

Glass: mainly includes various glass bottles, broken glass pieces, mirrors, light bulbs, thermos bottles, etc. Metal objects: mainly include cans, cans, etc.

Fabrics: mainly include discarded clothes, tablecloths, washcloths, school bags, shoes, etc. Through comprehensive processing and recycling, pollution can be reduced and resources saved.

For example, every ton of waste paper recycled can make 850 kilograms of good paper, save 300 kilograms of wood, and reduce pollution by 74% compared with the same amount of production; for every ton of plastic beverage bottles recycled, 0.7 tons of secondary raw materials can be obtained; every Recycling 1 ton of scrap steel can produce 0.9 tons of good steel, which saves 47% of the cost compared with ore smelting, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%. Kitchen waste includes food waste such as leftovers, bones, roots and leaves, peels, etc., which can be composted on-site through biotechnology and can produce 0.3 tons of organic fertilizer per ton.

Hazardous waste includes waste batteries, waste fluorescent tubes, waste mercury thermometers, expired medicines, etc. These wastes require special safe handling. Other garbage includes bricks, ceramics, slag, toilet paper, paper towels and other waste that are difficult to recycle in addition to the above categories of garbage. Sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.

2. What are some tips on garbage classification?

The benefits of garbage classification

The benefits of garbage classification are obvious. After the garbage is sorted, it is sent to the factory instead of the landfill, which not only saves land, but also avoids the pollution caused by landfill or incineration, and can also turn waste into treasure. For example, waste batteries are called "micro-killers". It is well known that batteries in daily life contain heavy metals such as mercury or cadmium. If these heavy metals are left underground, they will easily enter the groundwater through rainwater leaching and have a negative impact on water resources. and land causing severe persecution. However, waste batteries contain a variety of useful metal minerals, and their recycling value is very high. Because of the serious hazards and special recycling value of waste batteries, many countries strictly prohibit them from being mixed with garbage. Japanese communities have special yellow buckets to put button batteries and other materials separately. Another example is biological waste such as leftover lettuce, eggshell peels, vegetable leaves and other kitchen waste, which can be used to make good organic fertilizers. For example, the Da Nameng biological waste treatment machine in Huaibaishu Community can dry and crush biological waste to make efficient organic fertilizer. Residents can use it to grow flowers and grass. The vegetables grown using them are safer and healthier than food grown with chemical fertilizers, and are quite popular in supermarkets. Biological waste usually accounts for 40% of the total waste. If they can be turned into organic fertilizer, it will not only save land used for landfills, but also save vehicles and energy to transport them, and prevent them from breeding mosquitoes, flies and bacteria.

Therefore, there are many benefits to garbage classification.

Introduction to environmentally friendly classified trash cans

Generally speaking, common environmentally friendly classified trash cans are divided into green, yellow, and red.

The green ones are for recyclable garbage: paper, plastic, rubber, metal, glass, etc.

Yellow is non-recyclable garbage. Non-recyclable garbage: mainly kitchen garbage, including fruit peels, vegetable

peels, leftovers, etc.

Put away toxic and hazardous waste in red Toxic and hazardous waste: batteries, fluorescent lamps, mercury thermometers,

paint buckets, medicines, cosmetics, etc.

Promotional slogans about garbage classification

1. There are many benefits to garbage classification, and environmental protection depends on you and me 2. Please find a suitable home for the garbage

3 .If garbage can be turned into treasure, sorting and recycling is indispensable. 4. If everyone is willing to sort, garbage can also be turned into gold. 5. Garbage classification can be done with a little effort

6. Divide the garbage into a small part, and the environment will be beautiful

7. A little effort, a sustainable source of resources

8. Throw away "white pollution" and become "white resources" 9. Develop civilized dining habits and reduce kitchen waste 10. Garbage Children need to separate their families, and it is up to everyone to live and work in peace and contentment

3. Garbage classification in Hangzhou

Garbage includes industrial waste and domestic garbage. Industrial waste slag refers to waste generated during industrial production and processing, mainly including coal grinding stone, fly ash, steel slag, blast furnace slag, red mud, plastic and petroleum waste residue, etc. Domestic waste mainly includes kitchen waste, waste plastics, waste paper, broken glass, metal products, etc. In cities, due to the increasing population, domestic waste is increasing at a rate of 10% per year, posing a major public hazard.

Cities at home and abroad classify domestic waste: classification is based on the composition and production volume of waste, combined with local waste resource utilization and treatment methods. In Germany, it is generally divided into paper, glass, metal, plastic, etc.; in Australia, it is generally divided into compostable garbage, recyclable garbage, non-recyclable garbage; in Japan, it is generally divided into combustible garbage, non-burnable garbage, etc.

China's domestic waste can generally be divided into four major categories: recyclable waste, kitchen waste, hazardous waste and other waste. Currently commonly used garbage disposal methods include comprehensive utilization, sanitary landfill, incineration and composting.

1. Recyclable garbage includes paper, metal, plastic, glass, etc. Through comprehensive treatment and recycling, pollution can be reduced and resources saved. For example, every ton of waste paper recycled can make 850 kilograms of good paper, save 300 kilograms of wood, and reduce pollution by 74% compared with the same amount of production; every ton of plastic beverage bottles recycled can obtain 0.7 tons of secondary raw materials; every ton of scrap steel recycled can be smelted 0.9 tons of good steel saves 47% of the cost compared with ore smelting, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%.

2. Kitchen waste, including leftovers, bones, roots and leaves, and other food waste, can be composted on-site through biotechnology and can produce 0.3 tons of organic fertilizer per ton.

3. Hazardous waste includes waste batteries, waste fluorescent tubes, waste mercury thermometers, expired medicines, etc. These wastes require special safe handling.

4. Other garbage includes bricks, ceramics, slag, toilet paper and other difficult-to-recycle waste other than the above categories of garbage. Sanitary landfill can effectively reduce the impact on groundwater, surface water, Soil and air pollution.