| 以水基钻屑为骨料的人造基质的物理性状与淋洗脱盐效应研究 |
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| 引用本文： | 张 春,高昊辰,张思兰,刘广明,陈金林,何 敏,王朝强.以水基钻屑为骨料的人造基质的物理性状与淋洗脱盐效应研究[J].土壤,2019,51(4):769-774. |
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| 作者姓名： | 张 春 高昊辰 张思兰 刘广明 陈金林 何 敏 王朝强 |
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| 作者单位： | 重庆市涪陵页岩气环保研发与技术服务中心,中国科学院南京土壤研究所,重庆市涪陵页岩气环保研发与技术服务中心,中国科学院南京土壤研究所,南京林业大学南方现代林业协同创新中心,重庆市涪陵页岩气环保研发与技术服务中心,重庆市涪陵页岩气环保研发与技术服务中心 |
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| 基金项目： | 重庆市科委社会事业与民生保障科技创新专项重点研发项目(cstc2017shms-zdyfx0033)和江苏省重点研发计划项目(BE2017389，BE2018759)资助。 |
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| 摘 要： | 为研究水基钻屑土壤化利用的可行性,本文通过将西南某页岩气田水基钻屑与当地的腐熟污泥及紫色土按一定配比形成人造基质,利用室内土柱模拟试验进行两次定量淋洗以研究其物理性状与脱盐效应。结果表明:腐熟污泥的混入对人造基质物理性状有明显的影响,随着腐熟污泥配比的提高,人造基质的初始全盐量增大,容重减小;腐熟污泥的加入会显著降低人造基质的平均下渗速率。经过两次淋洗后各人造基质的脱盐率均大于70%,除水基钻屑︰腐熟污泥=10︰2、水基钻屑︰腐熟污泥=10︰4、水基钻屑︰腐熟污泥︰土壤=10︰2︰1外,其余各人造基质的剩余全盐量均低于2 g/kg;pH为8.0～8.6。由平均下渗速率、容重、pH和全盐量等指标可知,经过两次淋洗后以水基钻屑为骨料、辅配腐熟污泥或当地紫色土的人造基质具有良好的关键物理性状。
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| 关 键 词： | 水基钻屑 淋洗脱盐 土壤化利用 |
| 收稿时间： | 2018/3/23 0:00:00 |
| 修稿时间： | 2018/8/21 0:00:00 |
Physical Properties and Desalination Effects of Artificial Substrates with Water-base Drilling Cuttings as Aggregates |
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| ZHANG Chun,GAO Haochen,ZHAGN Silan,LIU Guangming,CHEN Jinlin,HE Ming and WANG Chaoqiang.Physical Properties and Desalination Effects of Artificial Substrates with Water-base Drilling Cuttings as Aggregates[J].Soils,2019,51(4):769-774. |
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| Authors: | ZHANG Chun GAO Haochen ZHAGN Silan LIU Guangming CHEN Jinlin HE Ming and WANG Chaoqiang |
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| Institution: | Chongqing Environmental Protection Center for Shale Gas Technology & Development,Institute of Soil Science, Chinese Academy of Sciences,Chongqing Environmental Protection Center for Shale Gas Technology & Development,Institute of Soil Science, Chinese Academy of Sciences,Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University,Chongqing Environmental Protection Center for Shale Gas Technology & Development and Chongqing Environmental Protection Center for Shale Gas Technology & Development |
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| Abstract: | In order to explore the feasibility of soil utilization of water-base drilling cuttings from shale gas field near Southwest China, the cuttings were mixed with decomposed sludge and/or local purple soil with different proportions to form artificial substrates, and indoor simulation experiment with twice quantitative washing were conducted to study physical properties and desalination effect of the artificial substrates. The results showed that the addition of decomposed sludge had a significant effect on physical properties of artificial substrates, with the proportion increase of decomposed sludge, the original salt contents increased and the bulk densities decreased. Twice quantitative washing experiment showed that the addition of decomposed sludge significantly reduced the average infiltration rate of the artificial substrate. After twice washing, the desalinization ratio of each artificial substrate was larger than 70% except for drilling cuttings: decomposed sludge =10:2, drilling cuttings: decomposed sludge =10:4, drilling cuttings: decomposed sludge: soil=10:2:1; the remaining salt contents of other artificial substrates were lower than 2 g/kg; pH values varied from 8.0 to 8.6. According to average infiltration rate, bulk density, pH value and salt content, after twice washing, the artificial substrates with water-base drilling cuttings as aggregates, decomposed sludge and/or local purple soil have better key physical properties. |
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| Keywords: | Water-base drilling cuttings Desalination Soil utilization |
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