土壤污染状况调查和风险评估表明上海市某地块受到苯并[a]芘污染,且污染物浓度对地块运营期间工作的成人有致癌风险,需要对超风险区域开展土壤修复。该地块采用高级氧化技术进行修复,过硫酸钠作为氧化剂、硫酸亚铁作为活化剂,实际修复...土壤污染状况调查和风险评估表明上海市某地块受到苯并[a]芘污染,且污染物浓度对地块运营期间工作的成人有致癌风险,需要对超风险区域开展土壤修复。该地块采用高级氧化技术进行修复,过硫酸钠作为氧化剂、硫酸亚铁作为活化剂,实际修复土方量为712 m 3,依据《污染地块风险管控与土壤修复效果评估技术导则》(HJ25.5-2018)对整个修复过程进行采样、检测和评估。结果表明修复后土壤中苯并[a]芘低于标准限值,修复工程达到预期效果。展开更多
The distribution characteristics of heavy metals in soil-root systems have great significance for the research into soil pollution risk assessment and the phytoremediation effect. This paper takes ligustrum lucidum as...The distribution characteristics of heavy metals in soil-root systems have great significance for the research into soil pollution risk assessment and the phytoremediation effect. This paper takes ligustrum lucidum as an example, based on the characteristics of adsorption of heavy metals in soil by woody plants, lays out sampling points, and using software Surer for the Kiging interpolation analysis, and the horizontal migration law of heavy metal cadmium in the soil-root interface system is simulated. Through multi-model statistical regression trend analysis, the horizontal migration mechanism of cadmium in different sections is discussed. The results show that： （1） under horizontal migration law： the migration ability of Cd is weaker near the Ligustrum lucidum root （0 30 cm）; with the root extension, the migration ability of Cd gradually is strengthened, and the main range of the migration ability is 60-90 cm. In addition, its migration law follows the cubic curve mode. （2） under longitudinal migration law： based on the Kriging method, migration models Z（hi） of heavy metal Cd in any depth of hi are constructed and fit the correlation coefficient R^2〉0.95.展开更多
文摘土壤污染状况调查和风险评估表明上海市某地块受到苯并[a]芘污染,且污染物浓度对地块运营期间工作的成人有致癌风险,需要对超风险区域开展土壤修复。该地块采用高级氧化技术进行修复,过硫酸钠作为氧化剂、硫酸亚铁作为活化剂,实际修复土方量为712 m 3,依据《污染地块风险管控与土壤修复效果评估技术导则》(HJ25.5-2018)对整个修复过程进行采样、检测和评估。结果表明修复后土壤中苯并[a]芘低于标准限值,修复工程达到预期效果。
文摘The distribution characteristics of heavy metals in soil-root systems have great significance for the research into soil pollution risk assessment and the phytoremediation effect. This paper takes ligustrum lucidum as an example, based on the characteristics of adsorption of heavy metals in soil by woody plants, lays out sampling points, and using software Surer for the Kiging interpolation analysis, and the horizontal migration law of heavy metal cadmium in the soil-root interface system is simulated. Through multi-model statistical regression trend analysis, the horizontal migration mechanism of cadmium in different sections is discussed. The results show that： （1） under horizontal migration law： the migration ability of Cd is weaker near the Ligustrum lucidum root （0 30 cm）; with the root extension, the migration ability of Cd gradually is strengthened, and the main range of the migration ability is 60-90 cm. In addition, its migration law follows the cubic curve mode. （2） under longitudinal migration law： based on the Kriging method, migration models Z（hi） of heavy metal Cd in any depth of hi are constructed and fit the correlation coefficient R^2〉0.95.
