Kitchen waste refers to perishable organic substances produced in life, such as food residue, leftovers, peel pulp, vegetable waste and so on. Leftover pizza is a kind of food residue. Because it contains organic substances such as food residue and dough, it belongs to perishable organic garbage.
When sorting garbage, leftover pizza should be put into the kitchen waste bin for special kitchen waste treatment, such as composting or biogas fermentation. This can minimize the amount of garbage, and at the same time realize the reuse of resources and environmental protection. Therefore, leftover pizza belongs to kitchen waste, not to other garbage, recyclables or harmful waste.
Types of garbage classification:
1, recyclable garbage
It 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.
2, kitchen waste
Including food waste such as leftovers, bones, vegetable roots and leaves, can produce 0.3 tons of organic fertilizer per ton by on-site composting with biotechnology.
3. harmful waste
Including waste batteries, waste fluorescent tubes, waste water silver thermometers, expired drugs, etc., these wastes need special safety treatment.
4. Other garbage
Including bricks, tiles, ceramics, muck, toilet waste paper and other wastes that are difficult to recycle, sanitary landfill can effectively reduce the pollution of groundwater, surface water, soil and air.