Resourceful treatment method for nanofiltration membrane brine separation

The invention provides a resourceful treatment method for strong brine in a nanofiltration membrane salt separation process, which comprises the following steps: advanced oxidation: treating strong brine generated by nanofiltration membrane separation by adopting an advanced oxidation method to reduce the total organic carbon content of the strong brine; preheating: eliminating the residual persulfate oxidizing agent in the strong brine through preheating; according to the method, the defects of the existing process are overcome, and the defects that the treatment effect on the strong brine generated in the nanofiltration membrane salt separation process is poor and the operation is unstable in the prior art are overcome; the industrial wastewater zero discharge target is guaranteed, and the method can be implemented in engineering and is convenient to operate and control. 本发明提供：一种纳滤膜分盐过程浓盐水的资源化处理方法，包括高级氧化，采用高级氧化方法处理纳滤膜分离产生的浓盐水，实现浓盐水的总有机碳量降低；预加热，通过预加热消除浓盐水中残留的过硫酸盐氧化剂；蒸发浓缩，通过蒸发器对预加热的浓盐水进行蒸发结晶，得到纯度达到工业盐回收标准的硫酸钠