设为首页  |   加入收藏
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 155次   下载 95 本文二维码信息
码上扫一扫!
分享到: 微信 更多
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
张 春,高昊辰,张思兰,刘广明,陈金林,何 敏,王朝强
1.重庆市涪陵页岩气环保研发与技术服务中心;2.南京林业大学;3.中国科学院南京土壤研究所
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。
关键词:  水基钻屑  淋洗脱盐  土壤化利用
DOI:10.13758/j.cnki.tr.2019.04.019
分类号:S15; X74
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。
Physical Properties and Desalination Effects of Artificial Substrates with Water-base Drilling Cuttings as Aggregates
ZhangChun1, GaoHaochen2, ZhangSilan1, LiuGuangming3, ChenJinlin2, HeMin4, WangChaoqiang4
1.Chongqing Environmental Protection Center for Shale Gas Technology & Development;2.Nanjing Forestry University;3.Institute of Soil Science,Chinese Academy of Sciences;4.Chongqing Environmental Protection Center for Shale Gas Technology DdDd Development
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.
Key words:  Water-base drilling cuttings  Desalination  Soil utilization

您是第2592177位访问者
版权所有 © 《土壤》编辑部
本系统由北京勤云科技发展有限公司设计   京ICP备09084417号