Four-color garbage can pictures and classification areas follows:

1, blue indicates recyclables, mainly including waste paper, plastic, glass, metal and fabric five categories.

2. Black indicates other garbage, including masonry ceramics, slag, bathroom waste paper, paper towels and other hard-to-recycle waste in addition to the above categories, as well as dust and food bags.

3. Green indicates food waste, including leftovers, bones, vegetable roots and leaves, fruit peels and other food waste. Composted by biotechnology in-situ treatment, each ton can produce 0.6~0.7 tons of organic fertilizer.

4, red indicates that the hazardous waste, hazardous waste containing heavy metals harmful to human health, toxic substances, or environmental hazards or potential hazards of the waste.

Principles of classification

1, divided and used

The purpose of classification is to divert waste disposal, the use of existing production and manufacturing capacity, recycling and utilization of recycled products, including the use of materials and energy use, landfill disposal of temporarily unusable useless waste.

2, according to local conditions

Various places, districts, communities (districts), neighborhoods geography, the level of economic development, the ability of enterprises to recycle and utilize waste, the source of residents, living habits, economic and psychological affordability vary.

3, self-conscious self-government

Communities and residents, including enterprises and institutions, to gradually develop "reduction, recycling, self-consciousness, self-government," the norms of behavior, innovative waste classification and treatment modes, to become the main force of waste reduction, classification, recycling and utilization.