Waste batteries contain many metal elements, such as cadmium, lead and mercury. It is easy to release when dealing with waste batteries, which will cause serious harm to the environment and human health.
First of all, these heavy metal elements will be discharged into the soil and pollute the soil, thus affecting the growth and quality of crops. When people eat these polluted crops, these heavy metal elements will enter the human body, causing harm to human health.
For example, lead can affect the nervous system, blood system and kidney system of human body, causing headache, insomnia, liver and kidney diseases and so on. Cadmium can lead to osteoporosis and kidney disease.
Secondly, these heavy metal elements will also be discharged into water bodies, polluting water sources, thus affecting water quality and the survival of aquatic organisms. Once these heavy metal elements enter the water body, they will exist in the water for a long time, causing poisoning and even death to aquatic organisms.
Not all batteries are harmful waste. At present, alkaline Zn-Mn batteries have little impact on the environment and human health, so they are no longer hazardous wastes. The waste batteries in hazardous wastes are mainly lead batteries, nickel-cadmium batteries, alkaline zinc-manganese batteries and lithium batteries.
Harmless waste batteries can be used for other garbage disposal, generally including disposable No.5 and No.7 dry batteries, generally used for TV remote controllers and toys. Their main components are zinc and manganese, and there is no mercury, so they can be treated as other garbage.
Hazardous waste refers to waste containing heavy metals and toxic substances that are harmful to human health or cause actual or potential harm to the environment. Including waste batteries, waste paint barrels, waste household appliances, expired drugs, expired cosmetics and so on. Hazardous waste batteries need to be specially placed in hazardous waste recycling bins, including:
Recyclable 1, 5, and 7 batteries after charging. These batteries belong to nickel-cadmium and nickel-hydrogen batteries, and the nickel and cadmium contained in them belong to heavy metals;
2. Lithium-ion batteries are mainly used in mobile phones and notebook computers. Their main metal component is lithium, but they also contain heavy metals such as cadmium, cobalt and nickel.
3. Lead-acid batteries, mainly used for electric bicycles, 70% are made of lead;
4. Button batteries, such as silver oxide button batteries and alkaline manganese button batteries.