mm糖糖豆
氰化镀银生产过程中会产生含银废液，具有回收价值。在能源日益紧张的当今社会，节能与经济是每个企业生存下去的有力保障。本文以江门电镀厂氰化镀银废液为原料，利用电化学法回收其中的银并对影响银回收得的各工艺条件进行优化，得到银最佳回收工艺，对其进行技术经济评价。During the production process of cyanide silver plating, liquid waste containing silver will be produced which has recovery values. With the increasingly scarce energy in today’s society, the best guarantee for the survival of a company is to be thrifty and energy-saving. By applying the cyanide silver plating liquid waste from Jiangmen Electroplating Factory as raw material, this study recovers the silver from the liquid waste using the electrochemical approach; and conducts optimization on all the processing conditions that hinder silver recovery so as to obtain the best recovery process, as well as making a technical and economic evaluation. 采用电化学原理电解含氰化银废液，用石墨板作阳极，铜片作阴极，空气搅拌，加入一定量的食盐。通过正交试验得到的最佳试验条件为：电流密度1.0A，两极板距离9cm，废水PH值9.0，温度为25℃。通过对正交试验的分析，可以知道电流密度，两极板距离为主要影响因素，废水PH值与温度为次要影响因素。The principle of electrochemistry was adopted to electrolyze the cyanide silver plating liquid waste, with graphite plates as anodes, copper sheet as cathode, air agitation and certain amount of edible salt was added. Orthogonal tests were conducted and the best condition was obtained: current density 1.0A, distance between the two polar plates 9cm, PH value of waste water 9.0 and the temperature 25°C. By analyzing the orthogonal tests, it was found that the primary influencing factors were the current density and the distance between the two polar plates, while the PH value of the waste water and the temperature were the secondary factors.针对电流密度与两极板距离进行单因素试验。得出结论，工业上应采用较低电流密度和较长的电解时间电解含银废水，而且在设计电解槽时要尽最大可能减小板间距，以便提高处理效率和减小费用。Conclusions were obtained after single factor experiments were conducted on the current density and the distance between the two polar plates; The industry should apply lower current density and longer electrolyzing time for the electrolysis of liquid waste containing silver; moreover, the distance between the plates should be as close as possible when designing the electrolytic tank so as to enhance treatment efficiency and reduce cost.
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Produced during the process of cyanide silver plating solution, liquid waste containing silver has its recycling value. In modern society where energy resources are increasingly meager, energy saving and economy have been a solid support for survival of each enterprise. In the thesis, the silver-containing liquid waste produced during cyanide plating in the Jiangmen Electroplate Factory was used as a raw material to recover silver through an electrochemical method. Additionally, the best silver-recovery process was designed through optimization of all sorts of technological conditions which influence the silver recovery. Finally, its technological economy was evaluated.
amy20060207
Silver cyanide production process will produce silver waste, with recycling value. In today's society increasingly tense energy, energy saving and economic survival of every business a strong guarantee. In this paper, Jiangmen silver cyanide plating factory waste as raw materials, which use electrochemical recovery of silver and silver recovery may affect the various process conditions were optimized to obtain the best silver recovery process, its technical and economic evaluation. Electrochemical principle of electrolytic waste containing cyanide silver, graphite plate as anode, cathode copper for air mixing, adding a certain amount of salt. Obtained by orthogonal test the best test conditions were: current density of 1.0A, the bipolar plate distance 9cm, wastewater PH value of 9.0, temperature 25 ℃. Through the analysis of orthogonal test, can know the current density, the bipolar plate distance of the main factors, water temperature, PH value and the secondary factor. Bipolar plate for the current density and distance of single-factor test. Concluded that industry should adopt a lower current density and long silver electrolysis water electrolysis time, and in the design of electrolytic cell to the maximum extent possible when decreasing the clearance in order to enhance the efficiency and reduce costs.
Bulabula789
提供一些资源环境和城市管理专业的毕业论文选题，供参考 。1、含砷废水的处理与工艺2、含酚废水的处理与工艺3、含氟废水的处理与工艺4、含甲醇废水的处理与工艺5、含氨氮废水的处理与工艺6、粉末活性炭的水处理工艺7、制药厂污水特性及其处理工艺8、造纸厂污水特性及其处理工艺9、制革厂污水特性及其处理工艺10、医院污水处理技术11、电镀污水处理技术12、炼油厂污水处理技术13、农药生产单位废水处理与处置技术14、啤酒工业废水处理与利用技术15、铜冶炼废水的处理技术16、工业生产中重金属废水的处理技术17、氮肥厂废水特性及其处理技术18、磷肥厂废水特性及其处理技术19、水处理常用工艺及其特点20、水处理新工艺及其应用前景21、水处理中脱氮除磷常用工艺及其特点22、我国中水回用现状及其发展前景23、好氧处理常用工艺及其适应性24、厌氧处理常用工艺及其适应性25、城市生活污水的处理技术与应用现状26、UASB反应器处理酒精废水的研究27、A/O法对含氮化工废水的处理研究28、SBR工艺脱氮除磷研究进展29、我国水处理剂的现状及发展前景30、中高浓度氨氮废水的综合处理31、废水脱氮除磷生物处理技术32、沉淀池类型及其应用33、氨氮废水处理技术现状及发展34、奥贝尔氧化沟的应用现状及其发展35、生物膜反应器在污水处理中的应用及研究进展36、餐饮废水的处理方法37、城市污水资源化的开发利用及其对策38、颗粒污染物净化技术39、机械式除尘器的应用现状及其研究进展40、过滤式除尘器的应用现状及其研究进展41、静电式除尘器的应用现状及其研究进展42、气态污染物净化的常用方法及其适应性研究43、烟气中SO2净化技术的研究现状及进展44、烟气中NOx净化技术的研究现状及进展45、含氟废气净化技术的研究现状及进展46、含挥发性有机物废气净化技术的研究现状及进展47、火电厂氮氧化物的处理技术48、机动车尾气的净化处理技术49、固体废物填埋场对环境的影响研究50、城市生活垃圾处理工艺51、生活固体废物的处理工艺52、城市生活垃圾的焚烧技术53、热电厂粉煤灰的综合利用54、卫生填埋法处理城市垃圾55、有机固体废物的沼气化处理56、城市垃圾的回收与利用57、城市污水污泥处理与处置58、城市污水厂污泥处置方式及资源化利用59、农村生活垃圾的处理与处置60、城市生活垃圾的分类收集与处理61、工业固体废弃物的处理与处置62、农业固体废弃物的处理与处置63、城市生活垃圾的成分及处理对策64、我国城市垃圾资源化现状及其发展前景65、我国现有环境管理制度综述66、我国现有自然资源环境管理综述67、我国现有区域环境管理综述68、水环境质量现状评价常用方法及其特点69、空气环境质量现状评价常用方法及其特点70、水质现状评价的新方法及其应用71、空气质量现状评价的新方法及其应用72、乡镇工业对农村（周边）的环境影响73、加快城镇化建设应注意的问题74、我国五大淡水湖的水质现状及其治理对策75、我国七大水系的水质现状及其治理对策76、松花江哈尔滨段水质现状及其治理对策77、哈尔滨市空气质量现状及其治理对策78、我国西部大开发的利与弊79、环境保护、可持续发展与政府政策80、湖泊富营养化的成因及其治理对策
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