| 废定影液的综合利用 |
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| 引用本文： | 米永红,慎义勇,刘辉,沈亮升.废定影液的综合利用[J].中国资源综合利用,2005(3):16-19. |
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| 作者姓名： | 米永红 慎义勇 刘辉 沈亮升 |
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| 作者单位： | 深圳市危险废物处理站,广东,深圳,518049 |
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| 摘 要： | 采用Na2S沉淀法回收废定影液中的银,通过高温灼烧、硝酸溶解、除杂等一系列步骤制备试剂级硝酸银.结果表明,银的回收率达99.92%,制备的硝酸银纯度为99.8%以上,达到分析纯级别.同时,进行了回收银后废定影液处理高浓度六价铬废液的研究,处理后废水中六价铬和三价铬都达到了国家规定的排放标准,实现了以废治废的目的.
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| 关 键 词： | 废定影液 硝酸银 铬废液 |
| 文章编号： | 1008-9500(2005)03-0016-04 |
| 修稿时间： | 2004年12月20 |
Comprehensive Utilization of Waste Fixative |
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| Mi Yonghong,Shen Yiyong,Liu Hui,Shen Liangsheng.Comprehensive Utilization of Waste Fixative[J].China Resources Comprehensive Utilization,2005(3):16-19. |
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| Authors: | Mi Yonghong Shen Yiyong Liu Hui Shen Liangsheng |
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| Abstract: | In this paper,by adding sodium sulfide,Ag+ in waste fixative is precipitated as Ag2S.Then silver nitrate is made with a series of refining process such as baking,solving and impurity emoving,the purity of silver nitrate is higher than 99.8%.Waste fixative that silver removed is used to treat wastewater contained Cr6+.The Cr6+ and total chromium in treated wastewater can fulfill the national wastewater discharge standard. |
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| Keywords: | waste fixative silver nitrate wastewater contained Cr6+ |
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