1. What are the four types of trash cans?
What are the four types of trash cans? In our life, garbage can generally be divided into four categories: recyclable garbage, kitchen waste, harmful waste and other garbage. At present, the commonly used garbage disposal methods mainly include comprehensive utilization, sanitary landfill, incineration and composting.
What are the four types of trash cans?
1. Recyclable garbage
Recyclable garbage includes paper, metal, plastic, glass, etc. Through comprehensive treatment and recycling, pollution can be reduced and resources can be saved. If every ton of waste paper is recycled, 85 kilograms of paper can be made, 3 kilograms of wood can be saved, and pollution can be reduced by 74% compared with equivalent production; .7 tons of secondary raw materials can be obtained for every 1 ton of recycled plastic beverage bottle; .9 tons of steel can be refined for each ton of waste steel recovered, which saves 47% of the cost, reduces 75% of air pollution and 97% of water pollution and solid waste compared with ore smelting.
2. Kitchen garbage
Kitchen garbage includes food wastes such as leftovers, bones, roots and leaves, etc. After being composted in situ by biotechnology, .3 tons of organic fertilizer can be produced per ton.
3. harmful waste
harmful waste includes waste batteries, waste fluorescent tubes, waste water silver thermometers, expired drugs, etc. These wastes need special safety treatment.
4. Other garbage
Other garbage includes bricks and tiles, dregs, toilet waste paper and other wastes that are difficult to recycle. Sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.
classification colors and signs of trash cans
II. Classification colors and signs of trash cans
1. Red represents harmful substances, which are sometimes marked with orange, including waste batteries, fluorescent tubes, paints, expired drugs, cosmetics and other substances that are not recyclable and have certain pollution hazards.
2. green: in the case of a variety of plastic trash cans, green represents kitchen waste, which can be used as fertilizer for plant nutrients, and can be decomposed and absorbed by natural microorganisms and plants after being buried, thus playing a role in recycling waste.
3. Blue: it represents recyclable garbage, including materials with use value such as plastics, paper and metals, which will be incorporated into the waste recycling system for resource recycling.
4. Gray: garbage other than harmful substances and recyclable substances, bricks, ceramics, muck and other wastes that are difficult to recycle, which are generally incinerated and buried.
5. Yellow: it represents a special garbage bin for medical waste, which is generally only used in hospitals, health stations and other medical places.
trash can sign
trash can sign:
1. Recyclable garbage: the sign is collected in a blue garbage container.
2. Non-recyclable garbage: the sign is to collect it in a green garbage container.
3. harmful waste: The sign is to collect in a red garbage container.
4. Other garbage: the sign is