摘要
采用黄金行业无害化处理后的氰化尾渣作为主要充填材料,养护完成后分别进行破碎,试验采取室内静态淋溶试验检测充填体在破碎前后的淋溶性质,评估其在受到地下水淋溶时,氰渣充填体中污染物的浸出风险。试验结果显示:氰渣充填体在养护完成后进行毒性浸出试验,检测指标结果符合GB/T 14848—2017 《地下水质量标准》Ⅲ类水体质量标准;静态淋溶试验中,不同粒径的样品淋溶液中总铜、总铅、总锌、总砷、总汞、总镉、铬(六价)、易释放氰化物指标均随着浸出龄期的延长而增加,当浸出龄期达到30 d后逐渐趋于稳定。检测指标质量浓度远低于GB/T 14848—2017 《地下水质量标准》Ⅲ类水体质量标准,对地下水质量等级影响甚小。
The detoxified cyanide tailings in the gold industry are used as the main backfill materials.After curing, the tailings are crushed separately.The indoor static leaching test is carried out to detect the leaching properties before and after crushing the filling body.The risks of pollutant leaching from the cyanide tailings filling body when leached in underground water are evaluated.The test results show that the when toxicity leaching test is carried out on the cyanide tailings filling body after curing, the test indexes meet the standards of Ⅲ water body quality stipulated in GB/T 14848—2017 Standard for Groundwater Quality in the static leaching test, in the leaching solutions of the samples with different particle diameters, the total copper, total lead, total zinc, total arsenic, total mercury, total cadmium, chromium(hexavalent),WAD cyanide index all increase with leaching periods, and stabilizes gradually after 30 d.The detection index mass concentration is far lower compared to Ⅲ water body quality stipulated in GB/T 14848—2017 Standard for Groundwater Quality indicating that it has little impact on underground water quality grades.
作者
程伟凤
兰馨辉
崔崇龙
翟菊彬
李家玮
Cheng Weifeng;Lan Xinhui;Cui Chonglong;Zhai Jubin;Li Jiawei(Changchun Gold Research Institute Co.,Ltd.)
出处
《黄金》
CAS
2023年第2期91-94,共4页
Gold
基金
吉林省科技发展计划资助项目(20190303027SF)。
关键词
氰化尾渣
充填体
静态淋溶
地下水
无害化处理
cyanide tailings
filling body
static leaching
underground water
detoxification treatment
