Egg shells belong to kitchen waste and cannot be recycled. Kitchen waste refers to the waste generated by residents in their daily life and activities such as food processing, catering service and unit catering, including abandoned leaves, leftovers, leftovers, peels, tea dregs and bones. Its main sources are family kitchens, restaurants, restaurants, canteens, markets and other industries related to food processing.

Kitchen waste contains extremely high moisture and organic matter, which is easy to rot and produce stench. After proper treatment and processing, it can be transformed into new resources. Because of its high organic matter content, it can be used as fertilizer and feed after strict treatment, and it can also produce biogas as fuel or power generation. Part of the oil can be used to prepare biofuels.

Kitchen waste should be provided to a special processing unit for processing. It is strictly forbidden to use waste edible oil (including gutter oil) as edible oil after processing. It is strictly forbidden to directly use kitchen waste to raise livestock and poultry and fish. It is forbidden to use kitchen waste without harmless treatment to produce fertilizer.

Eggshells have many uses. About 96% of eggshells are calcium carbonate. If the eggshell is placed directly in the soil, it will release very rich calcium, which can promote plant growth well. In addition to being used as fertilizer or repelling pests, eggshells can also supplement some calcium for birds and birds.