Innovated CAFE Process Design and Case Study of Advanced Treatment of Electroplating Wastewater
Journal of Jilin University(Earth Science Edition). 2020, 50 (6):
In the process of wastewater treatment in an electroplating park, due to the difficulty of the enterprises in the park to completely separate the quality, the complex breaking of the wastewater treatment is not complete, the hypophosphite and cyanide are complex and difficult to degrade. At the same time,the concentrate has to be treated by advanced treatment, as after the treatment, the contents of metals, total phosphate and nitrogen are still not meet the drainage industial standard. According to the typical water quality and water quantity characteristics of electroplating wastewater in enterprises,the authors studied and designed the advanced treatment technology of innovated CAFE(catalysis-adsorption-filtration-exchange),and introduced in detail the treatment technology, the process,the main equipment and the related design parameters of each process,and further carried out the actual treatment of electroplating wastewater in an electroplating industrial park in Nantong. The practical application shows that the waste water treatment operation of the design scheme is stable. The average concentrations of CODCr,NH4-N,total chromium,hexavalent chromium, and total nickel in the final effluent are 34.00,5.41,0.29,0.03, and 0.05 mg/L,respectively,which are far less than the discharge standards of electroplating wastewater and meet the requirements of advanced treatment of electroplating wastewater. Based on cost-benefit analysis,the treatment has a good market prospect.
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