Why do dry batteries belong to other garbage?
What is the difference between dry batteries and waste batteries?
Dry battery, also known as manganese zinc battery or carbon zinc battery, is a device that relies on manganese dioxide, zinc and electrolyte to react to obtain current, which belongs to the primary battery in the chemical power supply and is a disposable battery. Ordinary dry batteries are mostly manganese-zinc batteries, in the middle is a positive carbon rod, a mixture of graphite and manganese dioxide, and then a layer of fiber net. The net is coated with a thick electrolyte paste consisting of ammonium chloride solution and starch, with a small amount of preservative. The outermost layer is a cylinder made of metal zinc, that is, the negative electrode, and the battery discharge is the electrolytic reaction of ammonium chloride and zinc.
Since January 1, 2006, the state has prohibited the distribution of disposable batteries containing mercury, the current sales of disposable batteries in China are in line with the national low mercury and no mercury standards, according to the “waste battery pollution prevention and control technology policy”, the collection of waste batteries is focused on waste rechargeable batteries and waste button batteries. At present, in the absence of technical and economic conditions of effective resource utilization, waste disposable batteries are not regarded as harmful garbage, and are disposed of in accordance with other garbage, so it is good to throw them into other garbage cans when they are put into.
Are all the batteries harmless? not
Cadmium nickel battery: refers to the alkaline battery using cadmium metal as the negative active substance and nickel hydroxide as the positive active substance.
Mercury oxide cell: zinc as the negative electrode, mercury oxide as the positive electrode, potassium hydroxide solution as the electrolyte of the primary cell.
Lead battery: The electrode is mainly made of lead and its oxide, and the electrolyte is a battery of sulfuric acid solution.
Lead batteries and nickel-cadmium batteries such as these button batteries, rechargeable batteries, and mobile phone batteries still need to be placed as “hazardous waste.”
Therefore, alkaline low-mercury or mercury-free dry batteries are put into other garbage cans, and lead batteries such as button batteries, rechargeable batteries, mobile phone batteries and nickel-cadmium batteries are put into harmful garbage cans.