1. These oils and fats can be burned in a centralized way to generate electricity and turn waste into treasure.

2. These waste oils and fats can be used to make soap, which has strong decontamination ability.

3. They can also be recycled centrally to make animal feed.

4. Through scientific decomposition and refining, we can also make industrial lubricants.

5. Through refining, we can also make industrial fuels, saving energy and turning waste into treasure. Not long ago, there were planes, and the fuel refined from waste oil flew into the blue sky.

6. Smoke-containing substances can be extracted and made into lamps. In some temples, there is a habit of butter lamps, which can be made from waste cooking oil.

Reuse skills of fried oil (cooking oil): Actually, oil fried with fish, shrimp or meat will often affect the fragrance of dishes due to the residual smell when it is used again. Except when cooking, it is better to make eggplant dishes once, because eggplant needs to be fried and then burned, so the color is bright purple. Eggplant can absorb the smell of fish and meat in the oil. As long as the oil is not used many times, fried eggplant will be seasoned with fish flavor or sauce explosion. The cooked eggplant will be particularly delicious, and the oil will become more refreshing. If it is used as a dish, it will not taste, but it is better to use it as soon as possible.

Harm to human body The nutritional components of edible oils and fats will be destroyed by high-temperature heating. In the process of using oils and fats in catering industry, the contents of unsaturated fatty acids and saturated fatty acids, which are the main nutritional components, gradually decrease, while other toxic and harmful components, such as aflatoxin, free fatty acids and fatty acid polymers, gradually increase, especially carcinogens such as polycyclic aromatic hydrocarbons, begin to appear. People who use the oil from the waste cooking oil will suffer from dizziness, nausea, vomiting, diarrhea and other poisoning symptoms. Long-term consumption will lead to chronic poisoning, prone to liver cancer, gastric cancer, intestinal cancer and other diseases. Therefore, we must severely crack down on the "black-hearted" industry of recycling hogwash oil and refining gutter oil.

At the same time, restaurant waste oil and kitchen waste are mixed with other wastes during transportation, which will infiltrate into heavy metals, and will also produce various complex biochemical reactions, resulting in complex and changeable pollution. If these illegally flow to the poultry and livestock breeding industry, not only will the incidence of poultry and livestock be high, but also pathogens and heavy metals will enter the human body through the food chain, and human and animal diseases will easily occur.

Environmental hazards of direct discharge

Directly discharging untreated sewage containing waste oil into sewers will not only waste resources, but also seriously pollute the environment. The oily sewage discharged into the river will make the water eutrophication and affect the survival of fish. Oil will form an oil film in the gap of soil, which will harm the growth of plants. In areas with low temperatures, oil and water will also block underground pipe corridors, which will lead to poor drainage, overflowing urban sewage and damaging the image. Therefore, these waste oils and fats should be treated harmlessly, and it is best to treat them harmlessly at the source, or even recycle them.