50 words of garbage classification knowledge

1. 50 words of garbage classification essay

The earth is our home, and this home is surrounded by garbage.

As hosts, we can't just worry and complain, we must act and make a difference. Garbage is not, and waste is not useless.

Garbage and garbage are not technically difficult. What is difficult is that garbage is discarded casually and mixed and piled up to become garbage; Therefore, as educated and civilized people in the new century, we should participate in the source classification activities of "Yi" garbage, contribute a little to purifying our living space, and offer a love. It is a by-product of human life. With the rapid development and high concentration of social economy, its output has gradually increased.

Generally, it can be divided into five categories: plastic, glass, metal and so on. The harm of garbage to human life and environment mainly includes: First, it occupies too much land.

The garbage accumulated in the city encroached on many farmland. At present, the average annual output of garbage in Beijing is 440 kilograms per person, and the annual output of the whole city is about 4 million tons, which is equivalent to two semi-scenic mountains.

There are more than 4,500 garbage dumps in Beijing, covering an area of 1 1,000 mu. Garbage stays in nature for a long time: cigarette butts and woolen goods 1-5 years; 2 years; Painted wooden board 13 years; Nylon fabric for 30-40 years; Leather for 50 years; 80- 100 years; Plastics 100-200 years; Glass 1000.

To this end, we should not only make less garbage, but also pay attention to the classified recycling of garbage. Use less, and other products, and use more reusable products to reduce precious consumption; Use less plastic bags and shopping bags to reduce the harm to the city; Buy environmental protection appliances such as air conditioners to protect the atmosphere; Use less high concentration, and use less.

Second, pollute the air. Garbage is a complex mixture.

In the process of transportation and open-air stacking, decomposition produces odor and releases a lot of ammonia gas. Into the atmosphere, including 100 kinds of volatile organic gases, which contain many carcinogens. Plastic film, scraps of paper and dust form "garbage".

Third, pollute the water source. Rainwater, a harmful component in garbage, rushes into underground water, which will also produce a lot of acidity and alkalinity in the process of garbage stacking or pit filling, and dissolve the garbage at the same time.

The source will penetrate into the groundwater through the soil; If garbage is directly thrown into rivers, lakes or oceans, it will cause more serious pollution. You see, there are some plastic bags and bread paper floating on the surface of the North Sea, and scattered on the mountain roads in the forest. Some tourists just want to be convenient for themselves.

If animals eat white garbage by mistake, it will not only harm health, but even lead to death. Fourth, the soil.

The application of garbage to farmland after direct or simple treatment will destroy the aggregate structure, physical and chemical properties and water and fertilizer conservation ability of soil. Especially plastic bags, if buried in farmland, the roots of crops will not grow, the farmland will reduce production, and the food available for people will decrease.

Fifth, fire hazards. Garbage contains a lot of combustible substances, which will produce methane and other combustible gases in the process of natural stacking, which is easy to cause fires.

With the increase of medium content and the change from scattered storage in the open air to centralized storage, the harm caused by simple coverage of garbage in long-term storage is becoming increasingly prominent, and garbage explosion accidents continue to occur and the losses are huge. Sixth, yes.

Garbage not only contains, but also provides food, shelter and breeding places for mice and birds, and is also the root of infectious diseases. To sum up, the seriousness and urgency of the problem are obvious.

In order to make these wastes, it is necessary to recycle and utilize them. Do you know that?/You know what? Recycling 1 ton can produce 800 kilograms of good paper, reduce the felling of 17 trees, and save more than half of papermaking energy, reducing by 35%. 1 ton can recover at least 600 kilograms of gasoline and diesel; Using waste glass to rebuild glass can not only save raw materials such as water and electricity; Using scrap metal can save a lot of energy consumption and reduce energy consumption; Some kitchen waste, such as eggshells, vegetable leaves and leftovers, can be turned into green fertilizer through fermentation.

Therefore, we should vigorously publicize the source of educational waste through television, radio, newspapers and other mass media; Pay close attention to the formulation of laws and regulations suitable for national conditions and strictly implement them; We can consider carrying out the pilot work of garbage source in some units in depth and in detail; And further discuss with you to improve the management methods, so that the source of garbage can be widely developed as soon as possible. Let's work together to promote, remove and save resources as easily as possible.

So that Beijing can win the right to host 2008 with a brand-new look and provide ourselves with a beautiful and healthy living space. Find something useful. It's a little long

2. Small knowledge of garbage classification

Garbage classification knowledge

In Germany, littering is very particular. If you accidentally throw it in the wrong place, the whole community may suffer. Since 2002, I have been studying in Germany for a master's degree in environmental engineering. After school, I also worked in a garbage recycling company. Personally, I feel that Germans attach importance to environmental protection.

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

Germany's garbage recovery rate ranks first in Europe, and its garbage classification system is also very complicated.

Domestic waste can be divided into five categories: organic waste, recyclable packaging, paper, glass products and batteries. Different garbage is collected by different trash cans. For the convenience of collection, trash cans are often placed in different places. After I found a house in Germany, the first thing I did was to ask my neighbors how to throw garbage correctly. It took me a whole month to fully understand.

There are few open garbage bins, and they are basically slide-type designs. When throwing garbage, push the lid away, and the lid will automatically return to its original position after it is released. This has two advantages: first, prevent rainwater from falling into the box and turn the trash can into a water tank. Secondly, odor escape can be reduced.

Trash cans and plastic bags on the street are generally divided into yellow and blue. The former collects recyclable garbage such as paper packaging, while the latter accommodates domestic garbage such as peels.

The trash can in the kitchen is generally required to be covered with blue plastic bags, leftovers, melon peels, fruit scraps and so on. Usually left here. When the bag is full, tie a knot and carry it to the designated place outside the house. As soon as the cleaner saw the color of plastic bags, he knew how to sort them.

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

However, it should be noted that cartons and cartons cannot be thrown in. Because it belongs to recyclable packaging, it should be thrown into a special yellow plastic bag. China people who have just arrived in Germany often don't know this. This kind of plastic bag with eye-catching recyclable logo can be obtained free of charge at the nearest post office and supermarket. Other recyclable packaging, such as cans, plastic boxes, etc. You can put it in this bag as long as the material is printed with a recyclable sign.

Every supermarket in Germany has boxes for collecting used batteries. Glass bottles and glass bottles are thrown into different bins according to their colors. Usually, the cabinets of glass products are in groups of three, and there are eye-catching color signs on the boxes: brown, green, transparent and colorless, reminding you not to throw them wrong.

If we do it again, we won't come again.

The vast majority of Germans support Germany's complicated garbage classification. A friend of mine is studying in Dresden University. He said that when he first arrived in Germany, he lived in a student apartment. Because he didn't have this habit in China, he mixed up the garbage and threw it out. One day, he saw the dormitory administrator wearing gloves to open his discarded garbage bags for reclassification, which shocked him and made him ashamed.

If you don't follow these rules, trouble will come to you. Once, I worked in a garbage recycling company and went to a community with my colleagues. A German colleague opened a yellow plastic bag marked recyclable and found a large group of moldy flour inside. Because the flour was too heavy, it broke the plastic bag and spilled it all over the floor. According to the regulations, flour should be packed in a blue bag. Soon, the staff posted a warning sign at the gate of the community to the effect that someone in your community littered and made a mistake. Now let's issue the first warning. If we do it again, we won't come again.

According to the Germans, once it happens for the second time, the garbage recycling company will punish the whole community, and the community managers will spend a lot of energy to coordinate, so everyone is extra careful.

The salary of cleaners in Germany is generally 12 Euro/hour, which is about 3,000 Euro a month, which is not lower than that of office white-collar workers. (Source/Urban Express)

3. Common sense of garbage classification

Judging from the classification methods of municipal solid waste at home and abroad, it is generally classified according to the composition and output of garbage, combined with the resource utilization and treatment methods of local garbage. For example, Germany is generally divided into paper, glass, metal, plastic, etc. Australia is generally divided into compostable garbage, recyclable garbage and non-recyclable garbage; Japan is generally divided into combustible garbage, nonflammable garbage, and so on. At present, domestic garbage in China can be roughly divided into four categories: recyclable garbage, kitchen garbage, harmful waste and other garbage. At present, the commonly used garbage disposal methods mainly include comprehensive utilization, sanitary landfill, incineration for power generation, composting and resource reuse.

Recyclable waste

It mainly includes waste paper, plastic, glass, metal, cloth and so on.

kitchen waste

Include food waste such as leftovers, bones, roots, leaves and peels.

hazardous waste

Including waste batteries, waste fluorescent tubes, waste water silver thermometers, expired drugs, etc. These wastes need special safety treatment.

other waste

Including bricks and tiles, waste residue, toilet waste paper, paper towels and other wastes that are difficult to recycle, sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.

4. 50 words about garbage collection

Recyclable garbage is recyclable garbage. The packaging of paper, cardboard, glass, plastic, metal and Kunststoffen itself can be reused, or the materials can be recycled. Newspapers, magazines, advertisements and other clean paper related to these materials can be recycled. In addition, the green label (GrünenPunkt) on the package belongs to the dual system that needs to be paid, and also belongs to recyclable garbage.

It mainly includes waste paper, plastic, glass, metal, cloth and so on. Waste paper mainly includes:

Recyclable garbage: newspapers, magazines, books, all kinds of wrapping paper, office paper, cartons, etc. However, paper towels and toilet paper cannot be recycled because of their strong water solubility; Plastics mainly include all kinds of plastic bags, plastic packaging materials, disposable plastic lunch boxes and tableware, toothbrushes, cups, mineral water bottles and so on. Glass mainly includes all kinds of glass bottles, broken glass pieces, mirrors, light bulbs and so on. Metals mainly include cans and metal cans; Cloth mainly includes discarded clothes, towels, schoolbags and cloth shoes.

Extended data:

Domestic garbage is generally divided into recyclable garbage and non-recyclable garbage. Recyclable garbage usually means that the materials and components of garbage itself are recyclable paper, glass, plastic, metal and other packaging. Non-recyclable garbage refers to garbage other than recyclable garbage, which is usually contained in common environments such as natural conditions.

Easily decomposed garbage, such as skins, vegetable leaves, etc. Garbage that is common, harmful, polluted and can't be decomposed and reconstructed in life belongs to non-recyclable garbage, among which kitchen garbage, toxic harmful waste and other garbage belong to non-recyclable garbage.

Plastic waste is difficult to decompose. The soil after landfill will destroy the soil quality and reduce the growth of plants by 30%. After landfill, groundwater may be polluted, resulting in water pollution and diseases. Improper garbage disposal will cause a large number of mosquitoes and flies to breed, promote the reproduction of bacteria in garbage, produce toxic gases and biogas, and bring many hidden dangers.

The common garbage disposal method is to pour the kitchen waste from the elevator of the kitchen waste bin into the pretreatment system of the kitchen waste in-situ resource treatment equipment, which will preliminarily treat the garbage. After this step of garbage disposal, the water content of kitchen garbage will be controlled at about 50% after squeezing and dewatering.

Then the second step of treatment is carried out, that is, the treated materials are automatically put into the on-site resource treatment equipment for kitchen waste, and after the materials are added, special microbial agents are continuously added to it, and the garbage treatment equipment is composed of scientific operation parameters and preset operation methods.

Collect and use articles and materials, understand the recycling signs, and understand the recycling methods and benefits of some common recyclable materials.

? Establish a correct view of resources, cultivate awareness of resources, and cultivate the ability to collect and process information and practical ability.

? Let students understand the importance of the environment, start with small things and gradually develop good habits of protecting the environment.

We throw away a lot of rubbish every day, but a lot of rubbish can be reused, and about 30%-40% of it has recycling value. After treatment, garbage can be turned into useful things and given new life. If we can understand the types of garbage, such as organic garbage, inorganic garbage, domestic garbage and so on. And know the recycling signs and classify them, we can cherish the resources and recycle them as much as possible, then the treasures of the earth will not be hollowed out.

References:

Baidu encyclopedia-recyclable garbage

5. Ask for some knowledge of garbage classification.

Recyclable waste

It mainly includes waste paper, plastic, glass, metal, cloth and so on. Waste paper: mainly includes newspapers, periodicals, books, various wrapping papers, office paper, advertising paper, cartons and so on. However, it should be noted that paper towels and toilet paper are too water soluble to be recycled. Plastics: mainly include all kinds of plastic bags, plastic packaging, disposable plastic lunch boxes and tableware, toothbrushes, cups, mineral water bottles, toothpaste skins, etc. Glass: mainly includes all kinds of glass bottles, broken glass pieces, mirrors, light bulbs, thermos bottles and so on. Metal objects: mainly including cans, cans, etc. Cloth: mainly includes discarded clothes, tablecloths, towels, schoolbags, shoes, etc. Comprehensive treatment and recycling can reduce pollution and save resources. If every 1 ton of waste paper is recycled, 850 kilograms of paper can be made, 300 kilograms of wood can be saved, and pollution is reduced by 74% compared with the same output; Every 1 ton plastic beverage bottle can recover 0.7 tons of secondary raw materials; Every recovered 1 ton of scrap steel can produce 0.9 tons of steel, which saves 47% cost compared with ore smelting, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%.

kitchen waste

Including leftovers, bones, roots, leaves, peels and other food wastes, can produce 0.3 tons of organic fertilizer per ton by in-situ composting with biotechnology.

hazardous waste

Including waste batteries, waste fluorescent tubes, waste water silver thermometers, expired drugs, etc. These wastes need special safety treatment.

other waste

Brick and tile ceramics, muck, toilet waste paper, paper towels and other wastes that are difficult to recycle. According to the characteristics of garbage, it is usually treated by incineration or landfill.

6. What are the tips for garbage sorting?

Benefits of garbage sorting

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. For example, waste batteries called "mini killers" all contain heavy metals such as mercury or cadmium. If these heavy metals are left underground, they can easily leach into groundwater through rainwater, causing serious persecution to water resources and land. The waste battery contains a variety of useful metal minerals, and its recycling value is very high. It is precisely because of the serious harm and special recycling value of waste batteries that many countries prohibit them from being mixed with garbage. Japanese communities have this kind of yellow bucket, which separates button cell from others. Another example is biological waste such as leftover lettuce and eggshell skin, and kitchen waste such as picked Chinese cabbage leaves, but they can all be used as good organic fertilizers. Like this big nano-dream biological waste processor in Huaibai community, biological waste can be dried and crushed to make efficient organic fertilizer. Residents can use it to grow flowers and grass. Compared with fertilizer food, vegetables grown with them are safe and healthy, and are quite popular in supermarkets. Biological waste usually accounts for 40% of the total waste. If all of them can be turned into organic fertilizers, it can not only save land for landfill, but also save vehicles and energy for transporting them and prevent them from breeding mosquitoes, flies and bacteria.

So garbage sorting has many advantages.

Introduce the environmental protection classified trash can.

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

Green is used to put recyclable garbage, recyclable garbage: paper, plastic, rubber, metal, glass and so on.

Yellow is non-recyclable garbage, non-recyclable garbage: mainly kitchen garbage, including peels and vegetables.

Skin, leftovers, etc.

Red toxic and hazardous wastes: batteries, fluorescent tubes, mercury thermometers,

Paint bucket, medicine, cosmetics, etc.

Slogans about garbage sorting

1. Garbage sorting has many benefits, and environmental protection depends on you and me. Please find a suitable home for garbage.

3. To turn waste into treasure, classified recycling is indispensable. If everyone has a classified heart, garbage can also be turned into gold. 5. Garbage sorting is easy.

6. If the garbage is divided, the environment will be beautiful.

7. Simple and sustainable sources of resources.

8. Throw away the "white pollution" and turn it into a "white resource". Cultivate civilized dining habits and reduce kitchen waste 10. Garbage children should be separated and live and work in peace.

7. Introduction to garbage classification, 100 words.

The purpose of classification is to improve the resource value and economic value of garbage and make the best use of it. 2. Classified collection and treatment of garbage can improve the utilization of resources.

Among the garbage components, there are metals, paper, plastics, glass and so on. It is a directly recoverable resource with high recovery rate. Compared with the development of natural resources, it has the advantages of simple treatment, low cost and less pollution. The purpose of classification is to separate the garbage, use the existing manufacturing capacity, recycle the reused products, including material utilization and energy utilization, and landfill the useless garbage that can not be used for the time being.

Garbage classification refers to a series of activities that classify, store, put in and carry garbage according to certain regulations or standards, thus making it a public resource. Garbage classification can improve the resource value and economic value of garbage. Garbage classification is based on the composition and output of garbage, combined with the resource utilization and treatment methods of local garbage.

PS: There are posters and PPT for garbage classification. Different areas have different classification standards, such as dry and wet, kitchen waste, kitchen waste and so on. It is necessary to write it down.