waste sorting
(1) food waste
Cereals and their processed foods, meat and eggs and their processed foods, aquatic products and their processed foods, vegetables, condiments, sauces, etc.
(2) Leftovers
Hot pot soup base, fish bones, broken bones, tea residue, coffee residue, Chinese medicine residue, etc. (mussel shells, zongzi leaves, pig bones, etc. It's all dry garbage).
(3) Expired food
Cake, candy, air-dried food, powder food, pet feed, etc.
(4) Peel and stone of melon
Fruit pulp, fruit skin, fruit stems and branches, fruit, etc.
(5) Flowers and plants
Domestic green plants, flowers, petals, branches and leaves.
Discrimination method
If wet garbage is simply understood as "leftover garbage", many special cases cannot be explained. Although the surface of kitchen wastes such as mussel shells, zongzi leaves and pig bones is wet, they are all dry wastes.
This puzzle classification is related to the terminal processing steps of wet garbage. After arriving at the garbage disposal site, wet garbage will be sent to the semi-wet material crusher for chopping, and hard kitchen garbage such as dry garbage shells and big pig bones will block the blades of the crusher. Long fiber strips of garbage are also difficult to cut, such as zongzi leaves and corn husks, which are all dry garbage, and may even be entangled with blades to reduce the crushing efficiency. In addition, even if the garbage is thrown into the fermentation tank, it is not so easy to decompose. So although these are "leftovers", they are not wet garbage.
To sum up, pigs that can bite people (can be chopped up with a shredder) and stink after being left at home for three days belong to wet garbage, while other domestic garbage that cannot be recycled belongs to dry garbage.