Abstract:  Because of the complex composition of concentrated brine, difficult to treat, it is therefore, the bottleneck of zero discharge of wastewater. Electro-dialysis and EDMB membrane treatment were used to carry out the concentrated brine pilot test study, with salt concentration in the treated water less than 5 g/L. Through the process unit combining electro-dialysis and EDMB membrane treatment, the concentrated brine of reverse osmosis unit for wastewater advanced treatment of Shanxi Coking Company was used as the medium to produce acid and alkali for regeneration of membrane process and resin process to achieve the goal of energy conservation, emission reduction and resource recovery of coking wastewater.

Key words:  , Concentrated brine；Electro-dialysis；EDMB membrane treatment；Energy saving and emission reduction