What are the classifications of the four trash cans?

Four kinds of trash cans, they are recyclable garbage, kitchen waste, harmful waste and other garbage.

Recyclable garbage mainly includes five categories: waste paper, plastic, glass, metal and cloth; Kitchen waste (called wet waste in Shanghai) includes food waste such as leftovers, bones, roots, leaves and peels.

Hazardous wastes include heavy metals, toxic substances harmful to human health or wastes that cause actual or potential harm to the environment. Other garbage (called dry garbage in Shanghai) includes bricks and tiles, muck, toilet waste paper, paper towels and other wastes that are difficult to recycle, dust, food bags (boxes) and so on.

Related information:

These wastes can be recycled through comprehensive treatment, reducing pollution and saving resources. If every 1 ton of waste paper is recycled, 850 kilograms of paper can be made, 300 kilograms of wood can be saved, and pollution is reduced by 74% compared with the same output; Every 1 ton plastic beverage bottle can recover 0.7 tons of secondary raw materials; Every recovered 1 ton of scrap steel can produce 0.9 tons of steel, which saves 47% cost compared with ore smelting, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%.