Oily wastewater can be treated by oil separation first, and the separated waste oil residue may be hazardous waste. Secondly, the gutter oil in the hazardous waste list refers to waste mineral oil, so the gutter oil in the catering industry is definitely not hazardous waste.
Waste cooking oil is kitchen waste and kitchen waste is wet waste, so waste cooking oil belongs to wet waste. Kitchen waste is food waste and peel produced in the kitchen, which mainly includes food residues such as leftovers and cakes, vegetable stems and leaves, animal bones and internal organs, tea residues, fruit residues, fallen leaves of plants such as fruit shells, melon peels and bonsai, and waste edible oil.
Wet garbage is the garbage produced in daily life and activities such as food processing, catering service, unit feeding, etc., generally including leftovers, leftovers, peels, eggshells, bones, animal viscera, fish scales, leaves, weeds, etc.
Its main sources are family kitchens, restaurants, restaurants, canteens, markets and other industries related to food processing. These wastes should be disposed of in time so as not to affect people's lives.
waste
The definition of waste is: substances produced in the process of human survival and development, which have no value for the holder to continue to preserve and use. Different countries in the world have different definitions of waste.
For example, in Japan's laws on waste treatment and cleaning, waste is defined as: garbage, coarse garbage, ashes, sludge, feces and urine, waste oil, waste acid, waste alkali, animal carcasses and other dirty and unnecessary substances, solid and liquid substances. The American Resource Conservation and Recovery Act defines waste as a resource.