浅层平铺炭质吸附剂治理多氯联苯污染底泥的有效性评价研究  

Evaluation of the effectiveness of thin-layer capping carbonaceous sorbents amendment to PCBs contaminated sediment

作　　者：吴前飞[1] 周岩梅[2] 杨永哲[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《环境科学学报》2013年第10期2750-2755,共6页Acta Scientiae Circumstantiae

基　　金：国家水体污染控制与治理科技重大专项(No.2012ZX07202-002);北京交通大学基本科研业务费(No.2011JBM075)~~

摘　　要：以颗粒活性炭和粉末活性炭为修复剂,并对其表面性质进行了表征.同时,应用三维荧光光谱、半透膜被动采样装置(SPMDs)和低密度聚乙烯膜(LDPEs)被动采样3种方法评价其治理多氯联苯污染底泥的效果.三维荧光实验结果表明,到第3个月,底泥修复开始显现了比较明显的效果,溶解性污染物明显减少.SPMDs试验结果显示,颗粒活性炭和粉末活性炭修复的底泥在修复后的第5个月,其目标污染物PCB40被摄取量的减少率分别达到88%和70%,LDPEs相应结果达到了91%和83%.试验表明,炭质吸附剂浅层平铺修复污染底泥效果显著,且颗粒炭比粉末炭修复效果更好.In this paper, granular activated carbon and powdered activated carbon were used as the repair absorbents. Surface characteristics of activated carbons were firstly measured, and three-dimensional fluorescence spectroscopy, Semi-permeable Membrane Devices （SPMDs） and Low Density Polyethylene （LDPEs） passive sampling were used to evaluate the effectiveness of the amendment. The result of three-dimensional fluorescence demonstrated that sediment amendment started to show obvious effects at the third month, with soluble pollutants significantly reduced. The SPMDs evaluation results showed that the reduced intake rates of PCB40 released from the sediment repaired by granular activated carbon and the powder carbon were 88% and 70% at the fifth months, while the results of LDPEs were 91% and 83%. The finding of this study indicated that thin-layer capping carbonaceous sorbent amendment have a significant effect on polluted sediments. In comparison with powder carbon, granular activated carbon amendment is more effective.

关 键 词：底泥修复 炭质吸附剂 浅层平铺 生物有效性 

分 类 号：X705[环境科学与工程—环境工程]