韶关某铜硫矿废弃矿区土壤修复 工程措施及修复效果评估

摘 要：针对韶关某铜硫矿废弃矿区生态环境问题,采用先进的“原位基质改良+微生物菌剂+直接植被”改善土壤修复技术体系,用生态学的思想解决环境问题。实践证明,“原位微生物基质改良+直接植被”土壤修复技术治理酸性土壤和重金属污染效果显著。修复10个月后,矿区土壤pH均值由修复前的2.60上升至7.08,NAG-pH均值由修复前的2.62上升至4.63,土壤产酸潜力由高度产酸变为低度产酸,产酸情况已得到较好改善;土壤铅、锌、铜、镉的有效态分别显著下降了49%、45.8%、67.5%、58.6%,显著降低了土壤铅、锌、铜、镉等重金属元素的溶出,有效地控制了土壤的重金属污染。

Soil remediation engineering measures and effect evaluation of an abandoned copper and sulfur mine in Shaoguan

Aiming at the ecological environment of an abandoned copper- sulfur mine in Shaoguan, the advanced technology system of "in situ microbial matrix improvement+microbial agents+direct vegetation" is adopted to improve soil remediation and solve environmental problems with ecological ideas.It?has been proved that the "in situ microbial matrix improvement + direct vegetation" soil remediation technology has a significant effect on acid soil and heavy metal pollution. 10 months after restoration, the average pH of mine soil pollution area increased from 2.60 before recovery to 7.08, and the average value of NAG-pH increased from 2.62 before recovery to 4.63, the potential of soil acid production changed from high acid production to low acid production, and the acid production situation has been improved.The ?effective coefficienteffective states of soil Pb, Zn, Cu and Cd decreased by 49%, 45.8%, 67.5% and 58.6% respectively, which significantly reduced the dissolution of soil Pb, Zn, Cu, CD and other heavy metal elements, and effectively controlled soil heavy metal pollution.