In general there are four main categories.

First, recyclable waste, mainly refers to waste paper, metal, plastic, glass and fabric.

Secondly, food waste, which mainly refers to leftovers and other food waste, can become fertilizer after technical treatment.

Third, hazardous waste , mainly refers to waste batteries, waste fluorescent tubes and expired medicines and other wastes that will produce environmental pollution and drink toxic substances, this type of waste needs to be handled in a special way.

Fourth, there is another type of waste, such as dirt, toilet paper or discarded bricks and mortar and other waste, will produce pollution, so commonly used sanitary landfill disposal.