1, red
Red stands for hazardous waste. Harmful substances include waste batteries, fluorescent tubes, paints, expired drugs, cosmetics and other substances that are not recyclable and have certain pollution hazards.
2. Green (surname); green
Green stands for kitchen garbage. Kitchen waste can be used as fertilizer for plant nutrients, which can be decomposed and absorbed by natural microorganisms and plants after being buried in soil, thus playing a role in recycling waste.
3. Blue
Blue represents recyclable garbage, including valuable substances such as plastic, paper and metal, which will be incorporated into the waste recovery system for resource recovery.
Step 4: Gray
In addition to harmful substances and recyclable substances, garbage, bricks, ceramics, muck and other wastes that are difficult to recycle are generally burned and buried.
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Extended data
The significance of garbage classification:
1, reducing land loss. Garbage sorting, removing recyclable and non-degradable substances, reducing the amount of garbage by more than 60%.
2. Reduce pollution. Waste plastics in soil will lead to crop yield reduction; Waste plastics are eaten by animals by mistake, resulting in accidents of animal death. So recycling can also reduce the harm.
3. Turn waste into treasure. Other substances in garbage can also be converted into resources, such as food, vegetation and fabrics, and can be composted to produce organic fertilizer. If the garbage generated in the consumption process is classified in time, the resource potential contained in the recycled domestic garbage can be fully tapped.