Views:69 Author:Site Editor Publish Time: 2019-07-02 Origin:Site
The earth is the homeland we live in and provides us with such a beautiful environment. But with the rapid development of the social economy and the high concentration of urban population, the production of domestic garbage is gradually increasing. Our home is gradually surrounded by garbage.
Let me introduce you to the five categories of garbage:
(1) Liquid waste: such as domestic sewage, industrial waste water, organic solvents, waste acid, waste alkali, etc.
(2) Solid waste: Solid waste means any garbage, refuse, sludge from a wastewater treatment plant, water supply treatment plant, or air pollution control facility and other discarded materials including solid, semi-solid, or contained gaseous material, resulting from industrial, commercial, mining and agricultural operations, and from community activities. In Simple Words, solid wastes are any discarded or abandoned materials. Solid wastes can be solid, semi-solid or containerized gaseous material. For example, furniture, toys, empty aerosol cans and waste tires are all classified as solid waste.
(3)Organic waste: Organic waste is material that is biodegradable and comes from either a plant or an animal. Organic wastes usually broken down by other organisms over time and may also be referred to as wet waste. Most of the time, it is made up of vegetable and fruit debris, paper, bones, and human waste which quickly disintegrate. In an effort to keep the environment clean and safe, organic waste is preferred over items that can damage the earth and that do not disintegrate. For example, plastic shopping bags and plastic water bottles take a long time to disintegrate and leave their imprint in their wake.
(4)Recyclable garbage: To recycle waste bin is to simply reduce pollution. By simply recycling an item or making a basic fix to it, we can save all the energy that would have been consumed in the process of making it. Paper, cardboard, glass, plastic, metal, and plastic packaging that can be reused by itself or materials, are classified into recyclable garbage, as well as newspapers, magazines, advertisements, and other clean papers can be recycled.
(5) Hazardous waste: Hazardous waste is waste that has substantial or potential threats to public health or the environment. Characteristic hazardous wastes are materials that are known or tested to exhibit one or more of the following hazardous traits: Ignitability, Reactivity, Corrosivity, Toxicity, including batteries, fluorescent tubes, mercury thermometers, paint buckets as well as some home appliances and expired drugs. These wastes are usually treated separately.
Properly classifying waste has many benefits for us. The advantages of garbage sorting are as follows:
(1)Reduce land occupation
Some substances in domestic garbage of cans are not easily degraded, causing serious erosion of the land. Garbage sorting is able to separate recyclable items from non-degradable itemes, reducing the amount of garbage by more than 60%.
At present, most of China's garbage disposal uses sanitary landfills or even simple landfills, covering tens of thousands of acres where full of insects and sewage. Waste plastics in the soil can cause crops to be reduced, discarded plastic waste is eaten by animals, causing animal deaths every year. Therefore, recycling can reduce the hazard.
(3)Turning waste into treasure
China uses 4 billion plastic fast food boxes every year, 750-700 million instant noodle bowls, and billions of disposable chopsticks, which account for 8-15% of domestic garbage. One ton of waste plastic can be reprocessed into 600 kg of crude oil. Recycling waste paper can save the trees from being used for the production of paper. One ton of cans can be melted to the same weight of aluminum, which can save 20 tons of aluminum ore. 30%~40% of domestic garbage can be recycled, and the resources of this small profit should be cherished. You can also use the cans to make pencil cases, which are both environmentally friendly and resource-saving.
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