Design of wastewater treatment system for industrial wastewater containing cyanide and nickel

Abstract

Surface-mount technology (SMT) has been developed to produce printed circuit boards for electronic devices from as early as the 1960s. Since conductivity is highly valuable even in the smallest devices, various types of heavy and precious metals have been used to further increase the effectiveness of circuit boards. These metals include but are not limited to gold, nickel and copper. The plating process of Gold and Nickel at Kyocera Vietnam Co. Ltd.’s Manufacturing plant generates wastewater containing a high concentration of cyanide and nickel which needs to be treated properly.

The aim of this thesis was to study and design a treatment system for wastewater containing Cyanide and Nickel, based on the existing treatment system at Kyocera Vietnam Co. Ltd.’s manufacturing plant. Calculations of specifications of tanks, vessels, pits and treatment theories were made according to the confidential instructions provided by Organo Vietnam. Unfortunately, the positions of the tanks, vessels, pits, as well as the specifications of pumps, pipes could not be included, due to the requirements from Organo Vietnam’s Technical Manager.

This new design can be used as a reference for future study as well as for providing theoretical guidelines for treating wastewater containing heavy metals.