国外修复案例精选丨三种稳定化技术处理汞污染矿石与废石

Results//清理成效

E&C William's ENTHRALL Technology//ENTHRALL技术

-- The ENTHRALL Technology was not effective in reducing levels of mobile mercury in the mercury ore columns//该技术未能有效降低汞矿柱中移动态汞水平

-- The total mass of mercury in both the particulate and dissolved fractions were similar to the control column//无论在颗粒态还是溶解组分中，汞的总质量均与控制柱相近

KEECO's SME Technology//SME工艺

-- The SME process was applied both ex situ and in situ and was effective in reducing mobile mercury (< 25µm)//SME工艺无论在异位还是原位处理中均有效降低了移动态汞(< 25µm)水平

-- The in situ process reduced leachability by 88% and the ex situ process by 86%, when compared to the control//与控制柱相比，原位处理工艺的汞浸出率降低了88%，异位处理工艺的汞浸出率降低了86%

-- Both the in situ and ex situ treatments achieved a 99% reduction in particulate-associated mercury, relative to the control//与控制柱相比，无论原位还是异位处理工艺，均使得颗粒态汞减少了99%

-- There was however a significant increase in the mass of mercury in the dissolved fraction (< 0.45 μm). The in situ applications showed a 198% increase in comparison to the control, and the ex situ showed a 238% increase//但溶解组分中 (< 0.45μm)汞质量显著增加：与控制柱相比，原位处理增加了198%，异位处理增加了238%

Generic Phosphate//普通磷酸盐技术

-- The phosphate treatment increased the levels of both the particulate and dissolved fractions (< 0.45 µm) over the course of the 12-week study//在12周的柱浸试验研究中，磷酸盐处理技术使得颗粒态和溶解组分 (< 0.45 µm) 中的汞水平都有所增加

-- The mass of mercury leached was high during the first two weeks or monitoring//在前两周(的试验)或监测中，汞浸出质量较高

-- The treatment accelerated the breakdown of the mercury ore material matrix and facilitated the release of particulates//该处理技术加速了汞矿基质的破坏，促进了颗粒态汞的释放

-- The rise in leachable mercury invalidates this treatment as a possible remedial alternative for the materials at the SBMM site//由于浸出汞增加，该技术无法作为SBMM场地的备选修复技术

Cost Factors//相关费用

E&C William's ENTHRALL Technology//ENTHRALL 技术

-- Estimated total operating cost for remediating the SBMM piles was $59,807,000. No cost for residual handling was presented because the technology does not produce residuals//采用本技术修复SBMM废石堆的总运行费用估算为5980.7万美元;由于不产生残余物，未发生残余物处理费用

-- The largest cost component, the chemical reagents, was $57,008,000 (93.5% of the total cost).//其中药剂费占比最高，为5700.8万美元，占总费用的93.5%//推测为2000年美元价，下同

-- The second highest cost, equipment, was $1,633,500 (2.7% of the total cost)//其次为设备费，为163.35万美元，占比2.7%

-- The remediation cost per ton of material is $27.82//处理单价：27.82美元/吨受试材料

KEECO's SME Technology//SME工艺

-- Estimated total operating cost for remediating the SBMM piles is $35,690,000. No cost for residual handling was presented because the technology does not produce residuals//采用本工艺修复SBMM废石堆的总运行费用估算为3569万美元;由于不产生残余物，未发生残余物处理费用//此处与后文的残余物处理费用可能有矛盾

-- The largest cost component, the chemical reagents, was $26,700,000 (68% of the total cost)//药剂费占比最高，为2670万美元，占总费用的68%

-- The KEECO technology requires residual handling, which costs $1,283,000 and constitutes the second highest cost item//该技术需要处理残余物，费用为128.3万美元，占比第二//此处与前文可能有矛盾，请指正

-- The remediation cost per ton of material is $16.60//处理单价：16.6美元/吨受试材料

Generic Phosphate//普通磷酸盐技术

-- Full-scale treatment costs were not provided. Based on the study results, further experimentation and product modifications are required before the reagent can be considered for use at the SBMM site//未提供足尺试验费用，从现有研究结果来看，该药剂在应用到本场地之前还需要做更多的实验和产品调整//因无法判定Full-scale是指足尺试验还是对应国内工程实施阶段，因投入使用前尚需调整，暂译为足尺试验