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In order to remind everyone in the global village to care for the environment and protect the common home, the United Nations decided to set June 5 as the World Environment Day in 1972.

Mobile phones, cameras, remote controls, toys, cars

With the development of electronic technology

Electronic devices are becoming more and more common in people's lives

Almost every household uses batteries

Then you know

How to deal with the waste batteries?

Are you still worried about how to deal with used batteries?

You probably don't know

As early as 12 years ago

Most of the used batteries are no longer hazardous waste

This is not the case. Before the World Environment Day

Brother Tiger conducted a street interview with citizens of different ages

Let's see how they deal with waste batteries

You can see from the citizens interviewed on the street that they all probably hold the view that "although they don't know exactly what kind of pollution there is, it's definitely not good to litter", so they either put them in drawers or specifically find battery recycling bins.

This concept is mostly influenced by some inaccurate reports about the serious environmental pollution caused by waste batteries in previous years, such as "one battery can pollute 60,000 cubic meters of water", "waste batteries can cause Minamata disease in Japan when disposed of with household waste", and "one No. 5 waste battery can make one square meter of land fall into ruin". These reports have caused great repercussions in society, and many environmental protection enthusiasts and groups have carried out or participated in activities to recycle waste batteries.

Are used batteries really so harmful?

In fact, with the upgrading of battery manufacturing technology, ordinary waste batteries can be thrown away with ordinary garbage 12 years ago. Don't believe me? Look:

At the end of 1997, nine ministries and commissions jointly issued the Regulations on Limiting Mercury Content in Battery Products, which clearly required limiting the mercury content in battery products, "first achieving low mercury and ultimately achieving mercury-free." (The standard for low mercury is that the mercury content in the battery is less than 0.025% of the battery weight, and the standard for mercury-free is less than 0.0001% of the battery weight.)

From January 1, 2002, the sale of batteries with higher mercury content than the low mercury standard in the domestic market was prohibited.

In 2003, the State Environmental Protection Administration issued the Technical Policy for the Prevention and Control of Waste Battery Pollution, which pointed out that at present, in the absence of effective recycling technology and economic conditions, it is not encouraged to collect waste batteries that have reached the national low-mercury or mercury-free requirements in a centralized manner.

From January 1, 2006, the sale of alkaline zinc-manganese batteries with mercury content higher than the mercury-free standard is prohibited.

In other words, as early as 12 years ago, those used batteries that have met the national low-mercury or mercury-free requirements were just ordinary garbage and no longer hazardous waste. Therefore, the most common disposable dry batteries of No. 5 and No. 7 in the daily life of citizens have already met the requirements of mercury-free or low-mercury.

Since ordinary dry batteries do not cause environmental pollution, then we do not need to recycle used batteries? In addition to dry batteries, there is another type of rechargeable batteries in daily life that have a greater environmental hazard and are still hazardous waste that need to be collected for harmless disposal.

Special reminder

Rechargeable batteries and accumulators still need to be recycled

The five heavy metals that have the greatest environmental impact are arsenic, lead, cadmium, chromium, and mercury. Three of them are mainly contained in batteries, namely lead in lead-acid batteries, cadmium in nickel-cadmium batteries, and mercury in alkaline zinc-manganese batteries. Alkaline zinc-manganese batteries are mainly various types of dry batteries, which are now produced without mercury and can be collected without deliberate effort.

Therefore, the focus of collecting waste batteries is on discarded rechargeable batteries such as cadmium-nickel batteries, nickel-hydrogen batteries, lithium-ion batteries, lead-acid batteries, and discarded button-type primary batteries such as silver oxide batteries (i.e., waste button batteries).

Tips for popular science of used batteries

There are so many types of batteries, so what kind of batteries should be treated? What can be recycled after treatment? Please see the details

Alkaline manganese batteries: Throw them in the ordinary trash can. Because mercury has been stopped using in alkaline manganese batteries. If you decide to throw alkaline manganese batteries in the trash can, you can take the following measures to prevent leakage: 1. Pack multiple batteries in the same plastic bag; 2. Seal both ends of each battery with tape.

Recycling results: Recycling these batteries can obtain steel and zinc, which are two valuable metals.

Nickel-cadmium battery: The price of nickel-cadmium batteries includes the cost of recycling. Due to the presence of toxic cadmium metal, they cannot be disposed of in landfills. In supermarkets, there are recycling points for nickel-cadmium and nickel-hydrogen batteries.

Recycling results: Heating separates high-temperature metals such as nickel and iron from low-temperature metals such as zinc and cadmium; some metals solidify after melting, while others are reprocessed as metal oxides.

Lithium-ion batteries: Do not store or throw lithium batteries into the garbage dump. One of the reasons is that when they come into contact with high temperatures, they may overheat and explode. In most cases, companies that handle electronic devices such as mobile phones and laptops also handle this type of battery. Therefore, you can easily find a recycling location.

Recycling results: The recycling methods for these batteries are the same as those for nickel-cadmium batteries, in order to generate useful metals.

Silver oxide batteries: Silver oxide batteries and other button batteries contain mercury and must be recycled. In most cases, professionals will replace these batteries, so you can ask them if they can help you recycle the batteries.

Recycling results: It is usually crushed to recover useful heavy metals.

Lead-acid batteries: Similar to other batteries. If you purchase a new battery, ask about recycling methods for old batteries first.

Recycling results: During recycling, lead-acid batteries are separated into plastic, lead, and sulfuric acid. The polypropylene plastic is reprocessed into new battery cases, and the lead sheets are reprocessed for use in new batteries. The acid is neutralized and cleaned through sewage treatment plants, otherwise it will be converted into sodium sulfate for use in clothing detergents.

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