What harm does the tailings of electrolytic manganese plant have to human body? Can I drink it after boiling?

Chromium passivation and selenium electrolysis have been used for a long time in electrolytic manganese enterprises, resulting in a large number of hazardous waste, chromium slag and selenium-containing waste residue.

Chromium belongs to heavy metal pollution, which is extremely harmful to human body. Chromium has a strong stimulating and corrosive effect on human digestive tract and skin, which can lead to cancer. The accumulation of chromium has a fatal effect on animals and plants in water and affects the growth of crops. Although selenium is an essential trace element for human body, most areas in China lack selenium, but excessive intake of selenium will lead to selenium poisoning, which will have a serious impact on human health. The main manifestations are nervous system disorders such as nail and hair defects, numbness of limbs, weakened coordination ability, loss of consciousness and quadriplegia. Excessive selenium can also lead to poisoning and death of fish, birds, livestock and other animals. Countries all over the world pay more and more attention to the control of selenium. In the United States, selenium-containing waste must pass the inspection of 12 environmental standard.

China stipulates that the concentration of hexavalent chromium in drinking water should be lower than 0.05 mg/L.