In the morning, garbage can be seen everywhere on both sides of the street. Some are wrapped in plastic bags, some are thrown on the ground at will, and some are put in trash cans.
Passing by the hospital, I saw some expired drugs, discarded mercury thermometers, some medicine bottles and infusion sets abandoned in the corner of the hospital. These rubbish give off a pungent smell, which makes me afraid to go near.
In the corner of the factory building, abandoned batteries, old machines, circuit boards, broken glass and broken wood boards piled up into mountains. The battery was damaged and the liquid in it leaked out. Waste batteries are called "mini killers". We can imagine how much harm these waste batteries will do to the land after they penetrate into the soil.
In the vegetable market, discarded fish and vegetables are piled up on the road at will, and flies are buzzing. This surprised me. Are all the foods you can't buy thrown away at will?
A sanitation worker told me that these mountains of garbage were sent to a certain place for landfill or incineration.
Second, the harm of garbage:
Disposing of garbage at will is potentially harmful. How much land does it take to turn such a large amount of garbage into a landfill? How many toxic gases will be produced during incineration, which will endanger people's health? We constantly turn the limited earth resources into garbage, bury or burn them. Where will our future generations find the energy they need in a long time?
Third, the garbage classification treatment:
Are we helpless about the pollution of garbage? No, according to our investigation, garbage can be generally divided into four categories: recyclable garbage, kitchen waste, harmful waste and other garbage.
Recyclable garbage is directly sent to relevant factories for reprocessing and waste utilization. For example: 1 ton waste paper can be recycled into 800 kilograms of good paper; Rare metals such as zinc, copper and manganese dioxide can be extracted from recycled batteries; The recycled waste plastics can be recycled into fuel.
Kitchen waste, such as leftovers, lettuce, eggshell skin, cabbage leaves, etc. , can be piled up, let waste fiber and organic matter decay, into fertilizer, improve the soil.
In harmful waste, such as waste fluorescent tubes, expired drugs, etc., can be burned together, so as to minimize the harm of garbage.
Other garbage, such as ceramics and dregs, is difficult to recycle and has no harm to the environment. It can be effectively landfilled and reduce the pollution to groundwater, soil and air.
Fourth, our thinking:
Relevant statistics show that the value of waste that can be used but not used in China reaches 25 billion yuan every year, and about 3 million tons of scrap steel and 6 million tons of waste paper are not recycled. The recovery rate of waste plastics is less than 3%, and the recovery rate of rubber is 3 1%. Only more than 6 billion waste dry batteries contain more than 70,000 tons of zinc and 654.38+10,000 tons of manganese dioxide every year. Garbage sorting and recycling is of great value;
Waste paper: recycling 1 ton of waste paper can regenerate 800kg of good paper, save trees 17 trees, save 3 cubic meters of landfill space, use less 240kg of soda ash, reduce pollution discharge of papermaking by 75%, save papermaking energy consumption by 40%-50%, and each paper can be recycled at least twice.
Waste plastic: Plastic comes from the non-renewable resource on the earth-oil. Recycling waste plastics means saving oil. All waste plastics, waste lunch boxes, food bags, woven bags, soft packaging boxes, etc. It can be recycled into fuel by reducing waste plastics into gasoline and diesel oil; 1 ton of waste plastics can produce 700-750 liters of unleaded gasoline or diesel oil.
Waste glass: Recycling waste glass can not only save natural resources, but also reduce energy consumption by about 32%, air pollution by 20% and water pollution by 50%. Recycling 1 ton of waste glass saves 20% of the cost compared with using new raw materials. The benefits of recycling one ton of waste glass to the environment and resources are: 720kg of quartz sand, 250kg of soda ash, 60kg of feldspar powder, 0/0t of coal/kloc and 400 kwh of electricity can be saved.
Waste cans and aluminum cans: After being dissolved, the waste cans can be recycled 100% for countless times to make new cans, and can also be made into parts of automobiles, airplanes and even furniture. Recycling aluminum cans can save 95% of the energy needed for new aluminum cans and reduce 95% of air pollution. Discarding an aluminum can is equivalent to wasting half of the oil in the aluminum can.
Organic matter: More than 40% of the garbage we still leave home every day is kitchen waste such as peels, eggshells, vegetable leaves and leftovers, which can be treated as organic fertilizer or feed by composting and fermentation.
Waste batteries: Mercury and cadmium contained in waste batteries are toxic heavy metals with high pollution, but rare metals such as zinc, copper and manganese dioxide can be extracted from recycled batteries.
Verb (abbreviation for verb) Our suggestion:
1, let people understand the importance of garbage classification through publicity;
2. Set up sorting bins in residential areas, vegetable markets, hospitals, factories and other places to facilitate sanitation workers to sort all kinds of garbage.
Garbage is a public hazard, but as long as we use the method of garbage classification to deal with it, we can completely turn garbage from enemies into friends.