共查询到19条相似文献,搜索用时 109 毫秒
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废印刷电路板回收处理技术的研究进展 总被引:5,自引:1,他引:4
随着信息社会发展速度日益加快,电子电器产品数量的增长以及产品更新换代速度也不断加快,由此产生了大量的电子废弃物,并以每年近10%的速度增长.文章主要介绍了废旧印刷电路板(PCB)回收利用问题,综述了目前几种重要的常规废印刷电路板回收处理技术,并对这些方法做了简要的分析.还着重介绍了两种极具发展前景的新型废印刷电路板回收处理技术. 相似文献
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Zihan Liu Yang Luo Lianchao Ning Yong Liu Ming Zhang 《Frontiers of Chemical Science and Engineering》2022,16(11):1606
The increasing applications of seawater desalination technology have led to the wide usage of polyamide reverse osmosis membranes, resulting in a large number of wasted reverse osmosis membranes. In this work, the base nonwoven layer of the wasted reverse osmosis membrane was successfully modified into the hydrophobic membrane via surface deposition strategy including TiO2 and 1H,1H,2H,2H-perfluorooctyltrichlorosilane (PFOTS), respectively. Various techniques were applied to characterize the obtained membranes, which were then used to separate the oil–water system. The optimally modified membrane displayed good hydrophobicity with a contact angle of 135.2° ± 0.3°, and its oil–water separation performance was as high as 97.8%. After 20 recycle tests, the oil–water separation performance remained more than 96%, which was attributed to the film adhesion of the anchored TiO2 and PFOTS layer on the surface. This work might provide a new avenue for recycling the wasted reverse osmosis membrane used in oily wastewater purification. 相似文献
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本技术采用先进的高速祸流粉碎与微分解离新工艺,全封闭处理,不致二次污染,金属回收率达98%.采用机械破碎法对线路板进行破碎,不但节能,而且金属分离率高;再据二者密度差用分选法回收废旧线路板中的铜,将剩余的非金属材料通过特定的工艺制成高分子材料产品.处理能耗低,生产过程无二次污染,达到节能减排和资源回收的双重目的. 相似文献
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PCB退锡废水含大量锡、铜、铁等重金属以及硝酸等有机、无机酸,具有强腐蚀性,是多年来严重污染环境的废水之一,本文设计了一种硝酸型PCB退锡废水综合回收利用工艺,研究了相关工艺参数对该类废水中主要成分锡的回收率的影响。实验结果表明:锡与碱用量为1∶4(mol/mol),反应温度在98~105℃,反应时间为80 min时,锡的转化率、回收率最高可达98.5%以上。 相似文献
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介绍了清洁生产和印制电路板行业的发展现状,提出采取清洁生产措施的重要意义.指出印刷电路板企业可以通过生产工艺清洁生产技术、废物回收和废水末端治理后回用、清洁生产管理等措施实现清洁生产. 相似文献