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当前位置: 首页 > 文章 > 室内淋洗条件下脱硫石膏对滨海吹填土理化性质的影响 水土保持学报 2012,26 (1) 120-123
Position: Home > Articles > Effect of Desulfurizated Gypsum on Physical and Chemical Properties of Dredge Fill Under Soil Column Leaching in Laboratory Journal of Soil and Water Conservation 2012,26 (1) 120-123

室内淋洗条件下脱硫石膏对滨海吹填土理化性质的影响

作  者：
王晓颖;赵秀芳;王振宇;谢忠雷;张清
单  位：
天津泰达园林建设有限公司;吉林大学环境与资源学院
关键词：
吹填土;脱硫石膏;淋洗;理化性质
摘  要：
为改善吹填土的理化性质,实现吹填土在城市生态建设方面的充分利用,通过室内土柱淋洗试验,研究在不同施用量下脱硫石膏对吹填土各种离子动态变化的影响。结果表明:脱硫石膏可以显著改善滨海吹填土的理化性质,脱硫石膏施用量分别为0.7%,1.4%,2.1%,3种处理下土柱的饱和导水率分别是6.21,7.41,9.51mm/h;淋洗后土壤电导率、Na+和Cl-浓度、钠吸附比(SAR)和碱化度(ESP)等指标较淋洗前均有90%以上的降幅程度;且在前20h的淋洗过程中,各种化学指标的下降效果最为明显,而在将近150h的剩余时间内虽有下降,但下降速率很缓慢。
译  名：
Effect of Desulfurizated Gypsum on Physical and Chemical Properties of Dredge Fill Under Soil Column Leaching in Laboratory
作  者：
WANG Xiao-ying1,2,ZHAO Xiu-fang2,WANG Zhen-yu2,XIE Zhong-lei1,ZHANG Qing2(1.College of Environment and Resource,Jilin University,Changchun 130021; 2.Tianjin TEDA Landscape Architecture Limited Company,Tianjin 300457)
关键词：
dredger fill;desulfurized gypsum;leaching;physical and chemical properties
摘  要：
To improve the physical and chemical properties of the dredger fill and realize the full use of the soil in city ecological construction,effects of desulfurized gypsum applied on dynamical behavior of various ions under irrigation were studied by soil column leaching testing in laboratory in this paper.The results showed that using desulfurized gypsum could ameliorate the physical and chemical properties of the dredger fill.When the dosage of desulfurized gypsum were 0.7%,1.4%,2.1%,the saturated hydraulic conductivities were 6.21,7.41,9.51 mm/h;EC1∶5,Na+,Cl-and SAR,ESP of the soil after washing all had dropped substantially;both had declined degree of 90%.In the first 20 hours of leaching process,all chemical properties had fallen significantly,and the last nearly 150 hours,the decline rate of the various indicators became slower and slower.

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