Recyclable waste is blue, kitchen waste is green, hazardous waste corresponds to red, while other waste is gray.
Recyclables include five main categories: paper, plastic, glass, metal and fabric.
Food waste (called wet waste in Shanghai) includes leftovers, bones, vegetable roots and leaves, fruit peels and other food waste. It can produce 0.6 to 0.7 tons of organic fertilizer per ton through biotechnology in-situ treatment and composting.
Hazardous waste contains heavy metals that are harmful to human health, toxic substances, or waste that causes actual or potential harm to the environment. 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.
Other garbage (called dry garbage in Shanghai) includes masonry ceramics, slag, bathroom waste paper, paper towels and other hard-to-recycle waste in addition to the above types of garbage and fruit shells, dust, food bags (boxes). Adopting sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.
Expanded Information:
Trash sorting is a reform of the traditional way of trash collection and disposal, and is a scientific management method for the effective disposal of trash. People face the growing production of garbage and the deterioration of environmental conditions, how to maximize the utilization of garbage resources, reduce the amount of garbage disposal, and improve the quality of the living environment through the management of garbage classification is currently one of the urgent issues of concern to all countries in the world **** the same.
The reason for the increase in garbage is the improvement of people's living standards, all consumption has increased. According to statistics, in 1979, the national urban garbage removal is more than 25 million tons, in 1996, the urban garbage removal fee is 1.16 yuan / ton, four times as much as in 1979.
The garbage after high-temperature incineration does not take up a lot of land, but it is a staggering investment. Garbage sorting is to separate garbage at the source and put it out, and turn it back into a resource through sorted removal and recycling.
Baidu Encyclopedia - Garbage Classification