Electroplating wastewater

        The electroplating industry comprehensive discharge water, implementation problems difficult to deal with the low concentration of harmful substances and the new standard of environmental pressure, integrated membrane technology Tianchuang company independent research and development of the grade separation treatment of electroplating comprehensive discharge water, so as to effectively enhance the traditional wastewater treatment technology of the economy, not only to eliminate harmful substances in the wastewater of low concentration the industry to meet the new emission standards, and further treatment to achieve different production wastewater reuse standards.

        Folding electroplating wastewater treatment process

        Passivation of concentrated liquid lift pump for the concentrated liquid is input to the reduction tank through the metering pump will add reducing sulfuric acid tank, the reduction pool pH value reached 2-3, and then through the metering pump will add sulfite reducing agent reducing the pool, six hexavalent chromium reduction to trivalent chromium.

        After passivation liquid reduction treatment and pretreatment, zinc plating and nickel plating washing water into the regulation pool, all kinds of waste water in the pool after full adjustment homogenizes and pump up to enhance the reaction pool 1, enter the CaCl2 through the metering pump, to destroy the Zn2+ complexes in the reaction tank through the metering pump in NaOH 2, adjusting the pH value in the range of 9-11, and then the waste water into the reaction tank 3, into the inclined plate through the metering pump into the coagulant PAM after sedimentation tank, sludge into the formation of metal hydroxide sludge bucket, supernatant flow into the neutralization tank for pH adjustment, to pH value in the range of 6-9, and then discharged. The sludge in the inclined plate settling tank is discharged regularly to the sludge tank, and the sludge is returned to the regulating tank after being processed into a mud cake with a box type filter press.

        The 1 Huan separation process of reasonable configuration, good reliability, high efficiency.

        2 directly into the membrane separation system to avoid repeated dosing, reduce the cost of wastewater treatment.

        3 reduce the burden of wastewater treatment, and ensure the balance of post treatment load.

        4 greatly reduced the amount of acid and alkali.

        5 the effluent is the standard of industrial softened water, which can be used in the auxiliary water in production.