There are several kinds of knowledge about garbage sorting barrels.

1. There are four garbage bins for garbage classification: recyclable garbage, harmful waste, kitchen waste and other garbage, and their corresponding colors are blue, red, green and gray. In some places, kitchen waste is also called wet garbage, and other garbage is called dry garbage.

2. Recyclable garbage includes plastic, waste paper, metal, cloth and other reusable garbage. The purpose of resource recovery can be achieved by setting recyclable garbage bins, and harmful wastes, including harmful heavy metals and discarded batteries, need to be collected separately and treated specially to prevent harm to the environment.

3. Kitchen waste includes people's daily leftovers, melon and fruit peels, vegetable leaves, etc. The collected kitchen waste can be decomposed into reusable organic fertilizer, and other wastes are mixed together, including food bags for daily snacks, construction waste and waste paper. , are generally landfill.