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Title: | Researches regarding elaboration of new technology for gold ore processing | Authors: | Cosma, Cristiana | Keywords: | Wastewater treatment;Precious metals;Gold | Issue Date: | 2006 | Abstract: | The aim of the project was to promote performant technological solutions, efficient and more environmental friendly both in the sector of extraction/ore processing and in the field of process wastewater treatment. Treatment possibilities of wastewater from the recovering flows of precious metals based different solubilization systems (HCl + CaCl2, thiourea) were studied and it was elaborated the unitary treatment flow of wastewater from the processing of gold ore by solubilization/complexation with thiourea. Technical treatment flow of wastewater resulted from gold ore processing using thiourea, with high content of heavy metals and organic load, has the following phases: oxidation of organic load and oxidable heavy metals (Fe2+, Mn2+) with hydrogen peroxide (Fenton method), pH correction, metal hydroxides/oxides precipitation, flocculation of suspended matter, settling - phases separation. The treated wastewater is in agreement with discharging conditions into natural receiver to organic load and heavy metals indicators (Fe, Mn, Zn, Cd, Crt, Cu, Pb, Ni). |
Description: | PN MENER 1726 |
URI: | http://hdl.handle.net/123456789/535 |
Appears in Collections: | Projects |
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Project_15_TH.pdf | 274.5 kB | Adobe PDF | View/Open |
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