Dynamic model of wastewater treatment for a chromium plating process

N. Mbongwa, A. Telukdarie, W. Zhang

Research output: Contribution to specialist publicationArticle


Electroplating processes are significant waste producers, inclusive of metal waste, alkali and acid waste and in some instances cyanide constituted effluent. Typical electroplating facilities conduct wastewater treatment processes via basic, in-house measurements and dosing. This kind of treatment results in overdosing / under-dosing of treatment chemicals due to various limitations. It would be ideal to predict, in advance, the efficiency of wastewater treatment based on variability of concentrations, flow rates, volume, concentration, complexing agents and dosing quantities. The traditional challenge regarding information availability has resulted in limited work having been undertaken in process models for predictions of waste water treatment. This paper proposes a model for the treatment of typical wastewater from chromium plating processes. This includes wastewater from degreaser, acid and the plating tank. The paper includes a study of pH adjustment and chromium treatment. The model developed was simulated and the results show the response of the treatment process to changing waste conditions including composition, volumes, etc.

Original languageEnglish
Number of pages11
Specialist publicationPlating and Surface Finishing
Publication statusPublished - Sept 2009
Externally publishedYes


  • Chromium plating
  • Process modeling
  • Wastewater treatment
  • pH adjustment

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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