Abstract: In order to further reduce costs, avoid the toxic operating, chemical companies in a brine purification process using new technology membrane to replace the barium method ,which solve the barium chloride toxic, the shortcomings of higher prices. Membrane in three phases, This stage of pre-processing stage for the purpose of conveying to the membrane filtration unit qualified dechlorination of brine. Saline needs to achieve the following targets: temperature 40 ~ 50 ℃, pH = 3.5 ~ 5.0, free chlorine is zero, the flow stability
Keywords: Membrane addition to denitrification, pre-processing, process design.