What happens after the battery is recycled?

Dry batteries are one of the most widely used products in our daily life. From cameras, tape recorders, calculators and electronic alarm clocks to pagers, electronic dictionaries and PDAs, we are inseparable from dry batteries. China is a big producer and consumer of dry batteries. The annual output is 15 billion, ranking first in the world, with a consumption of 7 billion. On average, each Chinese consumes 5 dry batteries a year, so it will produce a huge amount of waste batteries.

Although the waste battery is small, it is very harmful. However, since the waste battery pollution is not as sensitive as garbage, air and water pollution, it has great concealment, so it has not received the attention it deserves. At present, China has as a big country in the production and consumption of batteries, waste battery pollution is a major environmental problem that needs to be solved urgently. In terms of volume and weight, waste batteries are negligible in domestic garbage, but its harm is very large, and the battery contains mercury heavy metals such as cadmium and lead. Mercury has strong toxicity, lead can cause nervous disorders, nephritis, etc.; cadmium mainly causes kidney damage and bone disease - osteoporosis, rickets and fractures. If waste batteries are mixed into domestic garbage together Landfill, over time, heavy metals that ooze may contaminate groundwater and soil.

For a long time, when producing dry batteries in China, we have to add a toxic substance--mercury or mercury compounds. The amount of mercury in alkaline dry batteries in China is 1 to 5%, and that in neutral dry batteries is 0.025%. Mercury is produced in the production of dry batteries up to several tens of tons. Mercury is commonly known as "mercury". Mercury and mercury compounds are toxic. Scientists have found that mercury has significant neurotoxicity, in addition to endocrine systems, immune systems, etc. There are also adverse effects. In the 1950s, Japan’s shocking world, the waterborne disease, was caused by mercury pollution.

More than 40 years ago, in a coastal town in the south of Jiuzhou, Japan, there was a strange disease among the local residents. The patient began to have unclear gait, unstable gait, paralysis of the limbs, and finally paralysis and mental disorders, and died in painful torture. Later, more and more people were infected with this disease, even cats and seabirds showed the same symptoms. Later, medical workers found toxic from the dead body and marine fish. Methylmercury proves that people are poisoned by eating contaminated fish. After investigation, it was the local Japanese nitrogen fertilizer industry company that discharged mercury-containing wastewater to Minamata Bay all the year round, which caused the seawater to be contaminated by mercury. The product contains high concentrations of methylmercury.

In order to restore the ecological environment of Minamata Bay, the Japanese government spent 14 years investing 48.5 billion yen to dig up the mercury-containing sediment in Minamata Bay for 4 meters. All of them were cleared. At the same time, isolation net was established at the entrance to Minamata Bay. The contaminated fish in the bay were all captured and landfilled. The representative of the Minamata City, Japan’s Minamata, who had witnessed the outbreak of water logging, said with emotion: "After nearly half a century of unremitting efforts, we are finally recovering from Minamata's disease and building a new Minamata city. I hope the world will learn from Japan's Minamata disease, get rid of its foolish way of production and promote a civilized way of production

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