Kitchen waste refers to the waste generated by residents in daily life, food processing, catering service, unit catering and other activities, including abandoned leaves, leftovers, peels, eggshells, tea residue, bones and so on. 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.
Garbage is divided into four categories, namely: harmful waste, kitchen waste, recyclable waste and other wastes.
1. The red trash can collects harmful waste, including: waste films, pesticides, fluorescent tubes, waste chemicals, expired drugs, waste mineral oil and its packaging, paint barrels, cans, waste ink cartridges, waste films, photographic paper, waste nickel-cadmium batteries, mercury oxide batteries, etc. They are listed in the national hazardous waste list.
2. The green trash can collects kitchen waste, including: tea residue, animal offal, vegetable stems and leaves, table kitchen waste, perishable skin and shells, moldy cakes and biscuits, and household kitchen waste, kitchen waste and other kitchen waste.
3. The blue label bucket collects recyclable materials, including unpolluted domestic garbage such as paper, plastic, metal, glass and fabric, which is suitable for recycling.
4. The gray trash can collects other garbage, including: dirty plastic products, cigarette butts, disposable tableware, seafood shells, worn-out ceramics, pet droppings, dirty textiles, contaminated paper, bone sticks and other domestic garbage except recyclables, harmful waste and kitchen waste.