Interesting essay topics about garbage sorting

1. Interesting little knowledge about garbage classification

Interesting little knowledge about garbage classification 1. What are the little things about 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 When children are separated, it is up to everyone to live and work in peace and contentment

2. Some common sense about garbage classification

Judging from the methods of classifying domestic garbage in various cities at home and abroad, they are generally based on the composition of the garbage. The composition and production volume are classified based on the resource utilization and treatment methods of local waste. For example, in Germany, it is generally divided into paper, glass, metal, plastic, etc.; in Australia, it is generally divided into compostable garbage, recyclable garbage, and non-recyclable garbage; in Japan, it is generally divided into combustible garbage, non-burnable garbage, and so on. Today, domestic waste in China 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 for power generation, composting, and resource return.

Recyclable garbage

Mainly includes five categories: waste paper, plastic, glass, metal and cloth.

Kitchen waste

Including leftovers, bones, roots, leaves, peels and other food waste

Hazardous waste

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

Other garbage

In addition to the above categories of garbage, including bricks, ceramics, slag, toilet paper, paper towels and other difficult-to-recycle waste, hygienic landfilling can be effective Reduce pollution to groundwater, surface water, soil and air.

3. Looking for some tips on garbage classification

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, face towels, 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; 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 to smelting ore, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%.

Kitchen waste

Including food waste such as leftovers, bones, roots and leaves, peels, etc., which are composted on-site through biotechnology and can produce 0.3 tons of organic waste per ton. fertilizer.

Hazardous waste

Including waste batteries, waste fluorescent tubes, waste mercury thermometers, expired medicines, etc. These wastes require special safe treatment.

Other garbage

Including bricks, ceramics, slag, toilet waste paper, paper towels and other waste that are difficult to recycle in addition to the above categories of garbage. They are usually incinerated according to the characteristics of the garbage. Or disposed of in landfill.

4. Little knowledge about garbage classification

Knowledge about garbage classification

In Germany, throwing away garbage is very particular. If you accidentally throw it in the wrong place, the entire community may suffer. I have been studying in Germany since 2002, pursuing a master's degree in environmental engineering. After school, I also worked in a garbage recycling company, and I personally felt the importance that Germans attach to environmental protection.

It took me a month to figure out how to throw away garbage

Germany has the highest garbage recycling rate in Europe, and the garbage classification system is also very complicated.

Domestic waste can be divided into 5 major categories: organic waste, recyclable packaging, paper, glass products and batteries. Different garbage is collected by different garbage bins, and in order to facilitate collection, the garbage bins are often placed in different places. The first thing I did after finding a house in Germany was to ask my neighbors for advice on how to properly throw away garbage. It took me a whole month to fully understand it.

Trash cans are rarely open-top, and most are of sliding-lid design. When throwing away garbage, push the lid open with force. The lid will automatically return to its original position after you let go. This has two benefits: First, it prevents rainwater from falling into the box and turns the trash can into a water tank. Secondly, it can reduce the odor escape.

Trash cans on the street are usually covered with plastic bags in yellow and blue colors. The former collects recyclable waste such as paper packaging, while the latter accommodates household waste such as fruit peels.

The trash can in the kitchen is generally required to be covered with a blue plastic bag. The usual leftover meals, melon peels and fruit scraps, etc. are thrown here. When the bag is full, tie it into a knot and carry it to a designated place outside the house. The cleaning staff will know how to sort and dispose of the plastic bag just by looking at its color.

For organic waste (food, etc.), Germany usually incinerates or buries it, but since 2005, the European Union has banned landfilling of organic waste. Incineration causes little pollution, and the heat can be used to generate electricity or heat. There is usually a green box next to the organic trash can, which is where paper is thrown. Unnecessary waste paper, newspapers, magazines, books, etc. are thrown there.

However, it should be noted that cartons and cartons cannot be thrown in.

Because they are recyclable packaging, they should be thrown into special yellow plastic bags. Chinese people who have just arrived in Germany often don’t know this. This kind of plastic bag with an eye-catching recyclable logo can be obtained for free from the nearest post office and supermarket. Other recyclable packaging such as can shells, plastic boxes, etc. can be placed in this bag regardless of their material as long as they are printed with a recyclable logo.

There is a box at the door of every supermarket in Germany to collect used batteries. Glass bottles and jars are thrown into different trash bins according to color. Glass trash bins usually come in groups of three, and the bins are marked with eye-catching color signs: brown, green, transparent and colorless to remind you not to throw away the wrong ones.

We won’t do it again if it happens a second time

The vast majority of German people support Germany’s complicated garbage classification. A friend of mine studied at the University of Dresden. He said that when he first arrived in Germany, he lived in a student apartment. Since we didn’t have this habit in China, he mixed the garbage together and threw it out. One day, he saw the dormitory administrator wearing gloves opening his discarded garbage bags and resorting them. He was shocked and ashamed.

If you don’t follow these rules, trouble will come. Once, I was working in a garbage recycling company and followed my colleagues to a community. A German colleague opened a yellow plastic bag that said it was recyclable and found a large ball of moldy flour inside. Because the flour was too heavy, it burst the plastic bag. It was sprinkled all over the ground. According to regulations, flour should be packed in blue bags. Soon, the staff posted a warning sheet at the door of the community with the following meaning: Someone in your community littered and made a mistake. Now the first warning is issued. If it happens a second time, we will not come back.

I heard from the Germans that once the garbage recycling company occurs for the second time, the garbage collection company will "***" punish the entire community, and the community management staff will have to spend a lot of energy to coordinate, so everyone is extra careful.

The salary of German cleaning workers is generally 12 euros per hour, which is about 3,000 euros a month, which is no lower than that of office white-collar workers. (Source/"Metropolitan Express")

5. Tips on garbage classification: Where does the garbage go after classification?

After everyone puts in the Mr. Cat smart garbage recycling equipment, we will The recyclables are initially sorted and transported to the sorting center for classification and packaging. After accumulating to a certain amount, they are uniformly connected to renewable resource recycling companies for recycling; kitchen waste is fully green and transformed on-site; other waste still enters the existing The environmental sanitation transfer and treatment system is used for treatment through incineration or landfill; hazardous waste is transported to hazardous waste temporary storage points to ensure that it meets the relevant requirements of the environmental protection department. Hazardous waste in each community is collected once a week and transferred to a temporary storage point for hazardous waste in preparation for subsequent transfer to a qualified terminal processing unit.

6. Knowledge of garbage classification

Japan usually divides garbage into 4 categories:

1. General garbage, including kitchen waste, paper scraps, grass and trees categories, packaging bags, leather products, containers, glass, tableware, non-resource bottles, rubber, plastics, clothing and yarn other than cotton white shirts.

2 Combustible resource waste, including newspapers (including flyers, advertising paper), cartons, boxes, magazines (including books, pamphlets), old cloth (including blankets, cotton white shirts, cotton sheets), cartons for milk drinks.

3 Non-combustible resource waste, including beverage bottles (aluminum cans, iron cans), brown bottles, colorless transparent bottles, and bottles that can be directly reused.

4 Bulky garbage that can be shredded, including small household appliances (TVs, air conditioners, refrigerators/cabinets, washing machines), metals, furniture, bicycles, ceramics, irregular shapes Cans, bedding, straw mats, long chains (hoses, ropes, wires, wires, etc.).