摘要
本研究对某地块异地修复处置项目的碱性含铅污染土壤开展稳定化修复小试实验,实验结果表明含磷酸盐稳定化药剂复合药剂A和复合药剂B均适用于本项目污染土壤的稳定化修复。在单独施用的情况下,复合药剂B的修复效率高于复合药剂A,复配添加少量低浓度柠檬酸能提升复合药剂A的稳定化修复效率。综合考虑两种稳定化药剂的药剂成本和本小试实验结果,建议修复工程选用复合药剂A复配少量低浓度柠檬酸作为改良的复合稳定化药剂。此外实验结果还表明,对于土壤pH值较高的铅污染土壤,偏酸性含磷酸盐稳定化药剂的稳定化修复效果可能比偏碱性含磷酸盐稳定化药剂更佳。
This study conducted a small-scale stabilization remediation experiment on alkaline lead contaminated soil of a land parcel.The results showed that both phosphate containing compound reagent A and phosphate containing compound reagent B were suitable for the stabilization remediation of contaminated soil in this project.When applied alone,the remediation efficiency of compound reagent B was higher than that of compound reagent A.The compound adding of a small amount of low concentration citric acid could improve the stabilization remediation efficiency of compound reagent A.Taking into account the cost of the two stabilizers and the results of this experiment,it was recommended to use compound reagent A and a small amount of low concentration citric acid as an improved composite stabilizer for this project.In addition,the experimental results also indicated that for lead contaminated soil with high soil pH,the stabilization remediation effect of slightly acidic phosphate containing stabilizers might be better than that of slightly alkaline phosphate containing stabilizers.
作者
崔晓荧
宋树祥
曾武
赵之理
董淑玉
彭海榕
王玉鹏
Cui Xiaoying;Song Shuxiang;Zeng Wu;Zhao Zhili;Dong Shuyu;Peng Hairong;Wang Yupeng(Grandtop Huanjing Environmental Engineering Co.,Ltd.,Guangzhou 510540,China;GZEPI Clean Energy Investment Co.,Ltd.,Guangzhou 510900,China)
出处
《广东化工》
CAS
2024年第13期97-99,共3页
Guangdong Chemical Industry
关键词
重金属污染
铅
土壤修复
磷酸盐
稳定化
heavy metal pollution
lead
soil remediation
phosphate
stabilization
