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| 火电厂烟气脱硫石膏对重度苏打盐化土饱和导水率的影响 |
| Effect of Power Plant Flue Gas Desulfurization Gypsum on Saturated Hydraulic Conductivity of Heavy Soda-Saline Soil Using Lysismeter |
| 投稿时间：2014-11-03 |
| DOI：10.13254/j.jare.2014.0307 |
| 中文关键词: 脱硫石膏 饱和导水率 重度苏打盐化土 |
| 英文关键词: desulphurization gypsum saturated hydraulic conductivity heavy soda-saline soil |
| 基金项目:山西省构建新型农业社会化服务体系建设项目“饲用草料-畜牧养殖绿色循环经济创新示范园”;山西省农业综合开发项目“大同盆地盐碱地改良技术示范与推广”;山西省科技援疆项目“新疆盐碱土壤综合改良利用技术应用研究”(2014072003) |
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| 中文摘要: |
| 以大同盆地重度苏打盐化土为研究对象,采用土柱模拟的方法,研究火电厂烟气脱硫石膏3种用量(15、30、60 t·hm-2)下土壤饱和导水率的变化规律,分析了脱硫石膏不同施用量和土壤饱和导水率的关系,旨在为大同盆地苏打盐化土改良提供理论支持和借鉴.结果表明:脱硫石膏对3个土层的土壤的饱和导水率均有提高作用,其中表层土壤(0~10 cm)提高的幅度最大,其次是10~20 cm,20~40 cm底层土壤提高幅度最小;脱硫石膏对表层(0~10 cm)土壤的饱和导水率提高速率以及效率最高,随着土层深度的增加,脱硫石膏对土壤饱和导水率的提高速率及效率逐渐降低;脱硫石膏的经济用量应为30 t·hm-2;重度苏打盐化土饱和导水率与脱硫石膏施用量无显着正相关关系(P>0.05). |
| 英文摘要: |
| In this paper, we applied soil column simulation method to study the effect of power plant flue gas desulfurization gypsum on saturated hydraulic conductivity of heavy soda-saline soil in the Datong basin of Shanxi Province. The amount of desulfurization gypsum was 15, 30 t·hm-2 and 60 t·hm-2. The results showed that different amount of desulphurization gypsum all could significantly improve the saturated hydraulic conductivity of heavy soda-saline soil; especially, the increase of saturated hydraulic conductivity in different soil layers appeared in a descending order as 0~10 cm>10~20 cm>20~40 cm; further, with the depth of the soil layer the rate and efficiency of saturated hydraulic conductivity reduced gradually. There was no significant correlation between the saturated hydraulic conductivity and the application amount of desulphurization gypsum (P>0.05). Considering the economic perspective, the best application amount of desulphurization gypsum was 30 t·hm-2. |
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