Judging from the classification methods of municipal solid waste abroad, it is generally classified according to the composition and output of garbage, combined with the resource utilization and treatment methods of local garbage. For example, Germany is generally divided into paper, glass, metal and plastic; Australia is generally divided into compostable garbage, recyclable garbage and non-recyclable garbage; Japan is generally divided into plastic bottles, recyclable plastics, other plastics, resource garbage, large garbage, combustible garbage, nonflammable garbage and harmful waste.

Extended data

Domestic waste in China can be generally divided into four categories: recyclable waste, kitchen waste, harmful waste and other wastes. At present, the commonly used garbage disposal methods mainly include comprehensive utilization, sanitary landfill, incineration for power generation, composting and resource reuse.

1. Recyclable garbage mainly includes waste paper, plastic, glass, metal and cloth. Waste paper mainly includes newspapers, periodicals, books, all kinds of wrapping paper, office paper, advertising paper, cartons, etc., but it should be noted that paper towels and toilet paper are too water-soluble to be recycled.

2. Kitchen waste includes food waste such as leftovers, bones, roots, leaves and peels. After in-situ composting by biotechnology, about 0.3 tons of organic fertilizer can be produced per ton.

3. Hazardous wastes include waste batteries, waste fluorescent tubes, waste water silver thermometers, expired drugs, etc. These wastes need special treatment.

4. Other wastes include bricks and tiles, muck, toilet waste paper, paper towels and other wastes that are difficult to recycle. Sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.