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微咸水及咸水长期灌溉导致农田次生盐渍化加重,作物减产等问题。研究依据区域微咸水及咸水盐基离子类型(Na+和Cl-离子型),进行微咸水及咸水盐基离子削减材料的筛选,利用吸附净化技术,筛选去除盐基离子的材料,并进行去盐效果的综合分析与评价。结果表明,所选降盐材料降低盐基Na+离子浓度较好的材料依次是阳离子树脂HBYX(38.48%)、碱性交换材料JQ(32.81%)和ZC-H(30.32%)及YK-BTC(27.23%);降低盐基Cl-离子浓度较好的材料均是组合材料,依次是H-JQ(31.31%)、HBYX-JQ(22.47%)和GK-HBYX(21.31%);去除水体盐分最佳的都是单系统降盐材料,依次为阳离子树脂HBYX(19.45%)、弱碱性交换材料JQ(15.33%)和活性炭GK(13.04%)及活性炭YK(9.31%)。
Long-term irrigation with brackish water and salt water has resulted in problems such as secondary salinization of farmland and crop yield reduction. Based on the brackish water and brackish salt ion type (Na + and Cl- ion type) in the area, the selection of brackish water and salty salt ion-based ion-reducing materials was screened. By using adsorption purification technology, And carry out a comprehensive analysis and evaluation of desalting effect. The results showed that the materials with lower salinity and lower Na + ion concentration were the cationic resin HBYX (38.48%), alkaline exchange material JQ (32.81%) and ZC-H (30.32%) and YK-BTC 27.23%). The best materials for reducing the Cl- ion concentration in the basalts were all H-JQ (31.31%), HBYX-JQ (22.47%) and GK-HBYX The best single-system desalt salt materials were cationic resin HBYX (19.45%), weak alkaline exchange material JQ (15.33%), activated carbon GK (13.04%) and activated carbon YK (9.31%).