废旧聚丙烯纤维片材在预防土壤盐碱化中的应用  

Application of waste polypropylene fiber sheet in preventing soil salinization

作　　者：魏俊富[1,3,4] 王迪 邹凯健 张环[1,2,3] 孔志云[1,2,3] WEI Jun-fu;WANG Di;ZOU Kai-jian;ZHANG Huan;KONG Zhi-yun(State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China;School of Environmental and Engineering,Tiangong University,Tianjin 300387,China;Laboratory of Textile Mate-rials for Soil Control in the Textile Industry,Tiangong University,Tianjin 300387,China;School of Chemical and Chemical Engineering,Tiangong University,Tianjin 300387,China;School of Material Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学省部共建分离膜与膜过程国家重点实验室,天津300387 [2]天津工业大学环境科学与工程学院,天津300387 [3]天津工业大学纺织行业土壤治理用纺织材料实验室,天津300387 [4]天津工业大学化学与化工学院,天津300387 [5]天津工业大学材料科学与工程学院,天津300387

出　　处：《天津工业大学学报》2022年第1期47-51,共5页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(51678409);内蒙古自治区科技重大专项(zdzx2018029);天津市科技计划项目(18ZXJMTG00120)。

摘　　要：为了预防盐碱土壤面积进一步扩大,通过在土壤根生区以下铺设聚丙烯材料作为土壤毛细屏障,通过阻断土壤水盐运移的途径防止土壤盐碱化。研究结果表明:聚丙烯非织造布与其他聚丙烯材料相比能够更有效阻隔土壤水盐的运动,避免根生区土壤盐碱化;在试验周期内,铺设聚丙烯非织造布土柱上层土壤电导率为0.61 mS/cm,与对照组表层土壤电导率31.8 mS/cm差距较大,聚丙烯扁平丝材料作为阻隔材料时上层土壤电导率与对照组相似。这说明聚丙烯无纺布能有效阻断土壤盐水的转移,从而防止土壤盐碱化的发生,对土壤盐碱化的预防具有潜在应用价值。In order to prevent the further expansion of saline-alkali soil area,polypropylene material was laid below the soil root zone as soil capillary barrier to prevent soil salinization by blocking the transport of soil water and salt.The results showed that compared with other polypropylene materials,polypropylene nonwovens could effectively block the movement of soil water and salt,and avoid soil salinization in the root zone.During the test period,the electrical conductivity of the upper layer of the polypropylene nonwoven soil column was 0.61 mS/cm,significantly different from that of the control group,which was 31.8 mS/cm.When the polypropylene flat wire material was used as the barrier material,the electrical conductivity of the upper layer of the soil was similar to the control group.Polypropylene nonwoven fabric can effectively block the transfer of soil salt water and prevent the occurrence of soil salinization,which has potential application value in the prevention of soil salinization.

关 键 词：废旧聚丙烯材料 水盐运移 盐碱土 土壤毛细阻隔 土壤盐碱化 

分 类 号：X53[环境科学与工程—环境工程]