The invention provides a zero-
discharge treatment process for recycling production
wastewater, and relates to the technical field of
water treatment and recycling, and the zero-
discharge treatment process comprises the following steps: S1, oxidizing and degrading COD through
ozone and a
Fenton reagent, and generating a flocculatable intermediate; s2, intercepting suspended matters by using a gradient aperture filter
bed in a grading manner, and monitoring a dynamic membrane resistance coefficient
delta Rm in real time to automatically trigger
backwashing; s3,
coupling an
ultrafiltration reverse osmosis membrane to realize that the
organic matter rejection rate eta is greater than or equal to 98%, and synchronously regulating and controlling flux and operation pressure by an online spectrometry; s4, regulating and controlling the
current density by adopting a
rotational flow electric
flocculation reactor for directional
crystallization to produce industrial salt with Cl <-> less than or equal to 50mg / L; and S5, based on the total dissolved
solid recovery rate TR and the comprehensive
energy consumption, establishing a multi-target optimization model for real-
time parameter adjustment. According to the method, a membrane
pollution early warning and
backwashing dynamic response mechanism is constructed through cross-scale cooperative regulation and control of
delta Rm and the
retention rate eta, and a
catalytic oxidation effect strengthening and electric
crystallization parameter self-tuning technology is combined, so that the problem of cooperative optimization of high-
salinity wastewater salt gradient separation and
pollutant deep removal is solved.