Study on the Effect of Different Materials in Reducing Na+ and Cl- Ions in Water

Long-term irrigation with brackish water and saline water will lead to problems such as serious secondary salinization of farmland, crop yield reduction, etc. Based on main types of base ions (Na+ and Cl- ions) in the area, studies have been carried out to select the material reducing base ions in brackish water and saline water. Utilizing adsorptive purification technology, the Na+ and Cl- ion reducing materials have been selected and the salt removing effect of such materials has been analyzed and evaluated in a comprehensive way. The results indicate that among the selected reducing materials, the material yielding the best effect in reducing Na+ ion concentration is cationic resin HBYX (38.48%) and the materials yielding the second best effect are alkaline exchange materials JQ (32.81%), ZC-H (30.32%) and YK-BTC (27.23%); all the materials with good Cl- ion reducing effect are composite materials, which are H-JQ (31.31%), HBYX-JQ (22.47%) and GK-HBYX (21.31%); all the materials with the best performance in reducing the salt content in water are single-system materials, which are respectively cationic resin HBYX (19.45%), slightly alkaline exchange material JQ (15.33%), active carbon GK (13.04%) and active carbon YK (9.31%).