Ji'nan times
brake disc replaced by a steam repair factory on the seven road, the Beijing media reported the time before. In the suburbs of Beijing, a lot of old brake discs are left behind in the forest, causing no soil. Although there are no such incidents in Shandong Ji'nan, the hidden danger exists objectively. Ji'nan currently has 1 million 420 thousand motor vehicles, 1 million electric bikes, and 800 thousand pieces of brake pad each year. Where did so many waste brake pads finally go? The reporter found that most people did not know the harm of the brake and discarded it as a common waste.
it is known that one of the main uses of antimony is as a flame retardant, which is considered to be a potential carcinogen, and human inhalation will destroy the function of the heart and liver and poison death. Antimony also has long-term adverse effects on the water environment. In 2007, the content of antimony in soil was regarded as an evaluation standard in the evaluation standard of soil environmental quality of the exhibition land, which stipulated that the content of antimony should not be higher than 12mg/kg (a) and 82mg/kg (B grade). According to experts, the content of heavy metals such as stibium in contaminated Beijing is over 10000mg/kg.
a number of cars and some electric bicycles need to be replaced by a brake pad
a reporter found that Ji'nan also has several companies specializing in the production and selling of brake pads. A company specializing in brake pad production told reporters that antimony is an excellent additive for friction materials, which has the advantages of noise reduction and enhanced heat dissipation. In addition to adding antimony sulfide, the brake pad of electric vehicle will also choose barium sulfate, which is "less effective but lower cost". On the first page of the official website of several barium sulfate sales companies in China, the reporter saw the words "barium sulfate is harmful to the environment and can cause pollution to the atmosphere".
a reporter visited several electric bicycle repair factories in the south section of Zhang Zhuang road. A master of a major maintenance factory told reporters that the factory needed to replace nearly more than 100 new brake pads a year. "Everywhere in Ji'nan, there are electric vehicle repair stalls, plus districts and counties. There are tens of thousands of them. A stall, even if there are only 20 brake linings a year, there are more than ten thousand a year. The car repair Master said.
a Korean car brand in Ji'nan 4S shop Master Sun Master Sun master told reporters that a maintenance point in their company can change 1500-1600 brake pads a year (4 per pair of brake pieces), the brand currently has 4 maintenance points in Ji'nan, at least 20 thousand brake disc replacement in the whole year. Roughly estimated, household cars usually replace a brake pad of up to 100 thousand kilometers, and operating vehicles have shorter replacement cycles. There are 1 million 420 thousand motor vehicles in Ji'nan, even if only 1/10 of the motor vehicles change a pair of brake pads each year, only about 600000 are replaced by motor vehicles, plus electric cars, Ji'nan cars. There are at least 800 thousand brake pads for a year.
most of the uncollected and old brake pads are mostly thrown or when scrap iron is sold in the waste box of an electric vehicle maintenance shop in the southern section of the south section of the south section of Zhang Zhuang Road, the reporter sees more than a dozen brake parts of electric vehicles, and the maintenance worker, Master Li said this is the amount of replacement for nearly half a month. Li Shifu and his colleagues have never heard of the toxic and harmful substances such as heavy metals in the brake pads. Reporters then visited a number of electric vehicle repair stalls, the answer is the same, electric car batteries are door-to-door recycling, brake pieces are sold to the waste collection.
reporter visited the car 4S shop repair department repair, car accessories salesman also do not know that the brake pad contains harmful substances to the environment. "The car battery and oil are wanted, the brake discs are always thrown away, and they accumulate too much when the scrap iron is sold." A maintenance worker at a 4S shop in Qilihe road said that there were no special locations for storing scrap brake blocks because recycling could not make money. The reporter saw several scrap car brakes on the ground near the car repair
how to deal with hard brake pads specifically how to deal with
"I don't do so much!" Mr. Liu, the head of a waste recycling company in Ji'nan, told reporters that some of the small waste recycling stations mixed the brakes in the scrap iron to sell them, and they were very upset. Because the friction material in the brake pad has non-metallic materials, it can't be remelted and reused. They have to pick it up and throw it out so as not to be found by the steelmaking plant. If you want to make use of the metal on the brake pad base, and knock out the friction material above, it will be time-consuming and laborious. No one is willing to do it. Mr. Liu said that the waste brake discs were mostly mixed with domestic waste and buried in landfill sites around Ji'nan, or abandoned in places he did not know. As for the brake pads which are sent to the smelters of iron and steel plants with scrap iron, the friction materials will be discharged as impurities in steelmaking.
environmental protection department staff said that the brakes are hazardous waste to refer to the "national hazardous waste list", the reporter inquired the list of the nearly 500 lists, did not find the brake, only in the "antimony containing waste" column to remind enterprises of the production process of antimony waste residue to special treatment. "That is to say, there is no definite provision for the specific handling of brake pads." Industry insiders say.
related news
brake disc untimely replacement may damage the brake disc
brake disc is the most critical safety part, and is one of the most frequently used parts in daily travel. The driver can minimize braking as soon as possible, so that the brake pad will get longer service life.
"the thickness of a car brake disc is directly related to the service life of the accessories. A new thickness of a new brake pad is usually around 1.5cm, and it will gradually thinner with the constant friction thickness in the use." Zhang Zhuang road repair factory of a repair factory master said that when the naked eye observation brake thickness is left only the original thickness of the original 1/3 (about 0.5cm), the owner will increase the frequency of self-examination, ready to replace. Of course, because of the wheel hub design, individual cars do not have the conditions of naked eye inspection, so they need to remove the tires to complete.
if the brake is lightly brakes accompanied by "hissing" friction, the brake pad must be replaced immediately. Because the limit sign on both sides of the brake pad has directly rubbed the brake disc, it proves that the brake pad has exceeded the limit. In this case, when replacing the brake disc with the inspection of the brake disc, the brake disc has been damaged when this kind of sound appears. At this time, even if the replacement of the new brake disc still can not eliminate the noise, the brake disc should be replaced seriously when the brake disc is serious.
when the brake pad thinning, the brake effect in the course of driving will be affected. At this time, we need to step down the brake pedal deeper to achieve the original brake effect, the first half of the brake effect is obviously weakened, many people feel that their brakes are soft, a little brake, at this time, it is necessary. Check whether the brake disc needs to be replaced. (Xu Min)
netizen said
@ environmental Dong Liangjie: Nanjing scrapped 1 million 400 thousand brake pads every year, and harmful heavy metals such as antimony can cause "sterilization" in the soil.
@ like trees do not like flowers: discard brake discs also contain arsenic, chromium, cadmium and other heavy metal pollution. We must be vigilant in the event of a poison pit in Miyun, Beijing. Don't wait until something goes wrong.