The classification of garbage:
1. Recyclables mainly include five categories: waste paper, plastic, glass, metal and fabric.
(1) Waste paper: mainly includes newspapers, periodicals, books, and all kinds of wrapping paper. However, note that paper towels and toilet paper are not recyclable because they are too water-soluble.
(2) Plastic: all kinds of plastic bags, plastic foam, plastic packaging, disposable plastic lunch boxes tableware, hard plastic, plastic toothbrushes, plastic cups, mineral water bottles and so on.
(3) glass: mainly including a variety of glass bottles, broken glass pieces, mirrors, thermos flasks and so on.
(4) metal objects: mainly including cans, can boxes, etc..
(5) Fabrics: mainly include discarded clothes, tablecloths, washcloths, schoolbags, shoes, etc.
2. Other garbage includes masonry ceramics, slag, bathroom waste paper, paper towels and other difficult to recycle waste and dust, food bags (boxes) in addition to the above categories of garbage. Adopting sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.
3, food waste, including leftovers, bones, vegetable roots and leaves, peels and other food waste. After biotechnology in situ treatment composting, each ton can produce 0.6~0.7 tons of organic fertilizer.
4, hazardous waste containing heavy metals harmful to human health, toxic substances or environmental hazards or potentially harmful waste. It includes batteries, fluorescent tubes, light bulbs, mercury thermometers, paint buckets, some home appliances, expired medicines, expired cosmetics and so on. These wastes are generally disposed of using separate recycling or landfills.
Expanded:
The significance of garbage classification:
1. Reducing the occupation of land
Some of the substances in domestic garbage are not easy to be degraded, which makes the land seriously eroded. Garbage classification, remove the recyclable, not easy to degrade the material, reduce the amount of garbage up to 60% or more.
2, reduce pollution
Currently, China's garbage disposal mostly adopts sanitary landfill or even simple landfill, occupying tens of thousands of acres of land; and insects and flies fly, sewage overflows, the stench of the sky, seriously polluting the environment.
The waste plastics in the soil will lead to crop yield reduction; abandoned waste plastics are accidentally eaten by animals, resulting in the death of animals from time to time. Therefore recycling can also reduce the harm.
3, turn waste into treasure
30% to 40% of domestic waste can be recycled, should treasure this small profit resources. We can also use cans to make pencil cases, both environmental protection, but also to save resources.
And, other substances in the garbage can be transformed into resources, such as food, grass and fabrics can be composted to produce organic fertilizer; garbage incineration can generate electricity, heating or cooling; bricks, tiles and ash can be processed into building materials and so on.
The garbage generated in the consumption chain is the best way to solve the garbage problem if it is classified in time and recycled.
Baidu Encyclopedia - Garbage Classification