关键词: 反渗透, 石化废水, 废水回用

Abstract: Taking the wastewater reuse system of a petrochemical company as an example, this paper introduces the reverse osmosis process and operation problems in wastewater reuse in refineries. Due to the wastewater blocking of reverse osmosis, the inlet pressure and pressure difference of the system increase; the flux decreases and the production efficiency decreases, which threatens the safe operation of the system. Aiming at this problem, the influent organic matter, insoluble salts, microbial pollution, particulate matter pollution, dosing situation and operation conditions were analyzed. According to the analysis results, the measures of civil engineering rectification, strengthening sterilization and operation management were formulated. These helped to realize the stable operation of the reverse osmosis system, and provided reference experience for similar devices.

Key words: reverse osmosis system, petrochemical wastewater, wastewater reuse