1. Recyclable garbage mainly includes waste paper, plastic, glass, metal and cloth. Waste paper: mainly includes newspapers, periodicals, books, various wrapping papers, office paper, advertising paper, paper boxes, etc., but it should be noted that paper towels and toilet paper are too water-soluble to be recycled. Plastics: mainly include all kinds of plastic bags, plastic packaging materials, disposable plastic lunch boxes and tableware, toothbrushes, cups, mineral water bottles, etc. Glass: mainly includes all kinds of glass bottles, broken glass pieces, mirrors, light bulbs, thermos flask, etc. Metal objects: mainly include cans, cans, toothpaste skins, etc. Cloth: mainly includes discarded clothes, tablecloths, washcloths, schoolbags, shoes, etc. Comprehensive treatment and recycling can reduce pollution and save resources. If every ton of waste paper is recycled, 85 kilograms of paper can be made, 3 kilograms of wood can be saved, and pollution can be reduced by 74% compared with equivalent production; .7 tons of secondary raw materials can be obtained for every 1 ton of recycled plastic beverage bottle; .9 tons of steel can be refined for each ton of waste steel recovered, which saves 47% of the cost, reduces 75% of air pollution and 97% of water pollution and solid waste compared with ore smelting.
2. The kitchen waste includes food wastes such as leftovers, bones, roots and leaves, etc. After being composted in situ by biotechnology, .3 tons of organic fertilizer can be produced per ton.
3. harmful waste includes waste batteries, waste fluorescent tubes, waste water silver thermometers and expired drugs, which need special safety treatment.
4. Other wastes include bricks and tiles, waste residue, toilet waste paper and other wastes that are difficult to recycle. Sanitary landfill can effectively reduce the pollution to groundwater, surface water, soil and air.