摘要
Abstract
To ensure the stable and efficient treatment of coking wastewater by membrane system,the operation performance and pollutant inter-ception characteristics of multi-stage reverse osmosis(RO)system were studied.The results showed that the multi-stage RO system operated stably,with the inlet and outlet water pH fluctuating within a stable range of 6.5-7.3,and constant transmembrane pressure difference.The de-salination rate of each stage of RO membranes was approximately94％-95％,slightly lower than the standard desalination rate.The system ex-hibited a lower retention rate for Na+compared to Ca2+,Mg2+,and Al3+,and a higher retention rate for SO42- than for Cl-,F-,and NO3-.The second-stage RO and high-pressure RO demonstrated higher retention rates for both anions and cations than the first-stage RO.The system effec-tively removed pollutants such as organics and total nitrogen(TN),and the treated water met the water quality standards for reclaimed water used as a source of industrial water.关键词
多级反渗透/焦化废水/膜分离工艺/脱盐率/阴离子/阳离子Key words
Multistage Reverse Osmosis System/Coking Wastewater/Membrane Separation Process/Desalination Rate/Anions/Cations分类
资源环境
