High-concentration waste liquid treatment process and equipment

The invention relates to a high-concentration waste liquid treatment process and equipment, and the high-concentration waste liquid treatment process comprises the following steps: carrying out pretreatment on high-concentration waste liquid, and carrying out nanofiltration salt separation treatment on the pretreated high-concentration waste liquid to produce a salt separation concentrated solution and a salt separation dialysate; the salt separation concentrated solution is introduced into an STRO membrane system for concentration treatment, and STRO dialysate is produced; the salt separation dialysate is introduced into an SCRO membrane system for concentration treatment, and an SCRO dialysate is produced; the STRO dialysate and the SCRO dialysate are mixed and then are introduced into an MTRO membrane system to be subjected to permeation treatment, and the MTRO dialysate is produced to serve as reuse water meeting the standard. Standard produced water of reuse water can be obtained, and the standard produc