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曾一度被环保界称为污染治理“头痛症”的IT产业排放的蚀刻废液,如今在江苏省昆山市千灯三废净化厂已成为出口赚“洋钱”的抢手货。从2002年开始,他们将从IT企业收集回来的蚀刻废液,经过处理加工制成硫酸铜、碱式钛酸铜和碱式氯化铜等再生产品,出口到美国、加拿大,仅硫酸铜出口就达到1000t以上。 20世纪80年代中期,千灯镇相继兴办了七八家以专业生产电路板的村办企业。尽管这些企业属于“小打小闹”的规模,但是每年产生的200 t以上的高浓度含铜蚀刻液却无法处置,导致随
Once known as pollution control “headache” by the environmental protection community, the etching waste liquid discharged by the IT industry now has become the popular item for exporting “foreign money” in Kunshan City, Jiangsu Province. From 2002 onwards, they will be collected from IT companies etching waste liquid, processed into copper sulfate, basic copper titanate and basic copper chloride and other recycled products, exports to the United States, Canada, only copper sulfate export To reach more than 1000t. The mid-1980s, Qian Dengzhen have set up 78 to professional production of circuit boards of village-run enterprises. Although these enterprises belong to the “slapstick” scale, but each year more than 200 t of high concentration of copper-containing etching solution can not be disposed of, resulting in