广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
7期
60-63
,共4页
庞涛%陶红%宋迪%董继锋%闻海峰
龐濤%陶紅%宋迪%董繼鋒%聞海峰
방도%도홍%송적%동계봉%문해봉
底泥%重金属%浸出毒性%稳定化
底泥%重金屬%浸齣毒性%穩定化
저니%중금속%침출독성%은정화
sediment%heavy metal%leaching toxicity%stabilization
采用毒性浸出方法,考察了固化材料生石灰、沸石、硅藻土、活性炭、磷酸二氢钾对底泥中重金属的稳定化效果。结果发现,当生石灰与磷酸二氢钾添加量为120 g/kg干底泥时,底泥中锰的浸出浓度下降了80%以上,镉的浸出浓度下降了90%以上,铅的浸出浓度下降了70%以上,铜的浸出浓度下降了85%以上,锌的浸出浓度下降了85%以上。
採用毒性浸齣方法,攷察瞭固化材料生石灰、沸石、硅藻土、活性炭、燐痠二氫鉀對底泥中重金屬的穩定化效果。結果髮現,噹生石灰與燐痠二氫鉀添加量為120 g/kg榦底泥時,底泥中錳的浸齣濃度下降瞭80%以上,鎘的浸齣濃度下降瞭90%以上,鉛的浸齣濃度下降瞭70%以上,銅的浸齣濃度下降瞭85%以上,鋅的浸齣濃度下降瞭85%以上。
채용독성침출방법,고찰료고화재료생석회、비석、규조토、활성탄、린산이경갑대저니중중금속적은정화효과。결과발현,당생석회여린산이경갑첨가량위120 g/kg간저니시,저니중맹적침출농도하강료80%이상,력적침출농도하강료90%이상,연적침출농도하강료70%이상,동적침출농도하강료85%이상,자적침출농도하강료85%이상。
Several chemical immobilization materials, such as CaO, zeolite, diatomite, activated carbon and KH2 PO4 , were evaluated by leaching toxicity experiments to determine their effects on heavy metal stabilization in contaminated sediment.The results showed that after the treatment of 120 g/kg CaO and KH2 PO4 , the concentrations of Mn, Cd, Pb, Cu and Zn eluted reduced more than 80%, 90%, 70%, 85%and 85%.