纳滤去除水环境中硝酸盐的机理及影响因素.

The research status of nanofiltration technology to remove nitrate in water environment is reviewed. The mechanism of nitrate removal by nanofiltration membrane (including Donan effect, dielectric effect and steric hindrance effect） is introduced in detail, and the formation principle of its rejection mechanism is introduced. It focuses on the influencing factors of nanofiltration membrane in the process of nitrate rejection (nanofiltration membrane itself, pressure, temperature, salt concentration, pH and magnetic field, etc.） and analyzes in detail each influencing factor in the process of nitrate rejection by nanofiltration membrane. Finally, the retention mechanism and influencing factors of nanofiltration membranes are summarized. [ABSTRACT FROM AUTHOR]