【摘要】 通过稳定化处理、淋洗处理与生物修复处理砷污染土壤,探讨不同修复措施对土壤总砷水浸浓度、总砷酸浸浓度、容重、pH、质地、渗透系数与电导率的影响。结果表明:3种修复措施均对土壤总砷水浸与酸浸浓度产生显著影响,经稳定化处理、淋洗处理与生物修复处理的污染土壤总砷水浸均值由1.10 mg/L分别降低至0.05、0.48与0.92 mg/L;经稳定化处理、淋洗处理与生物修复处理的污染土壤总砷酸浸均值由4.35 mg/L分别降低至0.38、0.45与3.99 mg/L。稳定化处理显著提高了土壤容重、pH、电导率,显著降低土壤渗透率系数,并使土壤质地由壤土变为砂土;淋洗处理显著提高土壤渗透系数,显著降低土壤pH;生物修复处理显著提高土壤渗透系数。更多还原

【Abstract】 After stabilization treatment, leaching treatment and bioremediation treatment of arsenic-contaminated soil,effects of different treatment measures on the soil total arsenic water immersion concentration, total arsenic acid leaching concentration, bulk density, pH value and texture,permeability coefficient and conductivity were explored. The results showed that all the three restoration measures had significant effects on the total arsenic water immersion and acid leaching concentration. The average arsenic water immersion in the contaminated soil after stabilization, leaching and bioremediation was 1.10 mg/L. Reduced to 0.05, 0.48 and 0.92 mg/L.The average value of total arsenic acid leaching of contaminated soil after stabilization, leaching and bioremediation was 4.35 mg/L, reduced to 0.38,0.45 and 3.99 mg/L respectively. Stabilization treatment significantly increased soil bulk density, pH, conductivity, significantly reduced soil permeability coefficient, and changed soil texture from loam to sand;leaching treatment significantly improved soil permeability coefficient, significantly reduced soil pH;bioremediation significantly increased soil permeability coefficient.更多还原