Harmful components of waste batteries

Harm of waste batteries: Mercury discarded from natural batteries will slowly overflow from the batteries, enter the soil or water source, and then enter the human body through crops, damaging the human kidneys. Under the action of microorganisms, inorganic mercury can be converted into methyl mercury, which will gather in fish. After people eat this fish, methylmercury will enter human brain cells, seriously damage people's nervous system, and even lead to madness and death. The famous Minamata disease in Japan is caused by methylmercury. Cadmium seeps out to pollute the land and water, and finally enters the human body, causing damage to the liver, kidney and cartilage, and in severe cases, causing bone deformation. The leakage of acid and heavy metal lead contained in automobile waste batteries into nature will cause soil and water pollution, which will eventually do harm to people. According to experts from the Department of Chemistry of Suzhou University and relevant environmental protection agencies, heavy metals in batteries are very harmful, mainly including cadmium, chromium, nickel, manganese and mercury.

The lead content of domestic dry batteries is generally higher than 25%, which can not meet the requirements of "green batteries". Moreover, the dry batteries separated and recovered from garbage in China are only about 10% of the output.

The pollution of heavy metals such as lead in waste batteries to soil and water sources is only a short-term hazard, but it is a potential long-term hazard to the ecological environment. The soil has certain pores. After degrading organic matter or compounds containing carbon, oxygen, phosphorus and sulfur, it can produce non-toxic or low-toxic substances, showing a certain self-purification ability. However, heavy metals such as mercury, lead and cadmium are not easy to be removed after entering the environment and accumulate in the soil for a long time. Destroy the self-purification ability of nature, make soil a "repository" of pollutants, and finally reduce soil fertility. When planting crops in such soil, heavy metals will be sucked into plants by plant roots, resulting in crop yield reduction or harm to crops. The heavy metals in the soil can continue to migrate to the adjacent environmental media, be washed and infiltrated into the deep soil by rainwater, and enter the river water source with groundwater. Once people drink this kind of water, there will be chronic damage to multiple system organs.

According to Li Donghong, a senior engineer in the solid waste room of Shenyang Institute of Environmental Science, the batteries used in daily life generate electricity through chemical action, or corrosion in general, and the waste batteries containing heavy metals produced through this action are quite harmful.

A piece of 1 battery can make 1 square meter of land useless, and a piece of button cell can pollute 600,000 liters of water (this is the water consumption of a person's life).

According to relevant data, 50% of the global cadmium pollution comes from the pollution of waste batteries. Drinking cadmium-contaminated water for a long time will lead to bone changes and anemia, and the typical performance is bone ache all over the body. Chromium can cause gastrointestinal ulcers and injuries, while nickel has a carcinogenic tendency and can also cause myocardial damage. Lead is not easy to be excreted after being ingested. Congestion and lead can lead to abnormal behavior and low IQ in children. Although manganese is a trace element needed by human body, excessive absorption will cause poisoning, and mercury can enter the central nervous system through the blood-brain barrier, causing neurological disorders and even personality changes. There is a kind of "water disease"-chronic mercury poisoning in Japan.