1, The main component of gutter oil is still triglyceride, but in the refining process, animal and vegetable oils undergo a series of chemical changes such as rancidity, oxidation and decomposition after pollution, resulting in some substances with pungent odor, such as aldehydes, ketones, lactones and peroxides, which have carcinogenic effects.

2. Waste oil also contains a large number of harmful microorganisms such as bacteria and fungi, which can cause a series of gastrointestinal diseases such as nausea and vomiting. At the same time, arsenic and lead seriously exceed the standard, which is easy to cause anemia, toxic liver disease and other symptoms.

3. The most serious thing is that the contents of aflatoxin and benzopyrene are extremely high. These two toxins are strong carcinogens. The toxicity of aflatoxin is 100 times that of arsenic, which easily leads to cancer in stomach, intestine, kidney, breast and ovary.

Extended data:

Treatment measures

1, waste oil can produce biodiesel.

It is a nerve-racking thing that "waste oil" flows back to the dining table. The best solution is to recycle it and turn waste into treasure. Professor Wang Huajun from the Department of Environmental Engineering, University of Science and Technology Beijing and others have successfully developed a comprehensive utilization technology for the preparation of mineral processing reagents from waste oil, which can produce fatty acids and sodium fatty acids for mineral processing with little secondary pollution. ?

2. Waste oil map?

In 2009, University of Science and Technology Beijing carried out the research work of using fatty acids decomposed from "gutter oil" as mineral collector, and achieved satisfactory test results. This technology has been applied in some iron and steel enterprises and is applying for national patent. 　

Experts believe that the further research and application of this technology will be of great significance to avoid environmental pollution, reduce the cost of mineral processing and reduce the threat to food safety. ?

3. New technology for producing ethanol and biogas from "waste oil"?

After sorting and separation, one part of the hogwash turns into the raw material of biodiesel, the other part continues to ferment into fuel ethanol and biogas, and the remaining waste residue is all converted into fertilizer. This is the process of resource disposal of kitchen waste witnessed by Hefei Science Island. Through technological integration and innovation, kitchen slops and "gutter oil", which used to be a headache, have now turned waste into treasure and become new energy.

Baidu encyclopedia-waste oil