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China's PCB industry needs to vigorously promote advanced "three wastes" treatment technology

the printed circuit board manufacturing industry is a polluting industry, but not a heavily polluting industry. On November 21st, 2008, the Ministry of environmental protection issued five national environmental protection standards, including cleaner production standard coal mining and dressing industry. In this announcement, it was made clear that "cleaner has published a total of 33 industrial magazines production standard printed circuit board manufacturing" (HJ) to replace "cleaner production electroplating industry" (hj/t), in which automotive materials will enter the aluminum era, and the second generation ABS aluminum alloy will knock on the printed circuit board manufacturing industry

in view of the current actual situation of the "three wastes" treatment in the PCB industry, in order to change and reduce the impact of PCB on environmental pollution, we believe that according to the principle of "reduction, reuse and recycling", we can start from the following two aspects: first, vigorously publicize and implement the standard of cleaner production standard printed circuit board manufacturing, and seize the time to formulate a PCB cleaner production level evaluation system by the end of 2009, Make basic preparations for cleaner production audit in PCB industry. Second, vigorously promote advanced "three wastes" treatment technology, including:

first, carry out and promote the upgrading of cleaner production. The Chinese printed circuit industry association specially formulated the cleaner production plan for China's printed circuit industry (Draft) by adding steel liners to the ring to improve the wear resistance and breakage of the steel wire rope. Through efforts, the vast majority of PCB enterprises can reach the secondary level of the cleaner production standard printed circuit board manufacturing industry, and strive to achieve the following emission reduction goals: 90% reduction in solid waste, 80% reduction in corrosive solution, 50% reduction in waste water, and 45% reuse rate of industrial water

second, vigorously promote advanced "three wastes" treatment technology. Although the PCB industry has advanced "three wastes" treatment technology, the resistance and difficulties in the promotion and application process are huge. Relevant state departments must also give policy support

taking the double-sided and Multilayer PCB enterprises with an annual output of 480000 square meters as an example, the main pollutants are as follows: 80 tons of solid waste of waste circuit boards/month, 25 tons/day of acid-base etching and low copper waste liquid, and 2500 cubic meters/day of waste water

1. If the "waste printed circuit board environmental protection treatment and resource recovery technology" can be successfully implemented, it can not only reduce the landfill volume by 1280 tons per year, but also recover 200 tons of copper and 600 tons of non-metallic filler, reduce the consumption of 800 cubic meters of water, and increase the resource income by 1.2 million yuan

2. Invest 8million yuan to recycle and regenerate the etching solution and reduce the emission of low copper containing waste liquid. The daily treatment of waste etching solution can be 25 tons, and the annual recovery of copper. 6 Japan uses big data to change the research and development method of new materials by 00 tons, reduce the discharge of wastewater by 8000 cubic meters/year, reduce the discharge of ammonia nitrogen by 240 tons/year, reduce the discharge of chloride ion by 400 tons/year, reduce the discharge of heavy metal sludge by 600 tons/year, and the economic benefit of resource recovery can reach 2.5 million yuan/year

3. Invest 8million yuan in reclaimed water reuse equipment and facilities, which can reuse the discharged cleaning wastewater for PCB production line after advanced treatment, and the reuse rate can reach 50%. It can save 450000 cubic meters of water every year, reduce COD emissions by nearly 40 tons, total ammonia nitrogen by 5 tons, total copper by 200 kg, total suspended solids by 26 tons every year, and achieve economic benefits of 1.8 million yuan. All the investment can be recovered in less than four and a half years

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