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Complex Industrial Water Solutions"Miwatek specializes in treating complicated and difficult industrial waste water. Miwatek’s process design capabilities enable them to design and install treatment and water recovery plants for virtually all types of inorganically impacted waters and for many that are also organically contaminated. "

Industrial Waste Water Treatment

The processes that would be applied very much depend upon the contaminant(s) that is (are) present, the intended use(s) / potential use(s) for the recovered water and the potential reuse and/or disposal options that could be achieved for the contaminant(s) once they have been removed or made safe.

Achieving Zero Liquid Discharge (ZLD) is normal, but achieving Client requirements is the primary objective.The process technologies that could be applied include:-
  1. Oxidation and reduction processes, e.g. for the oxidation of ferrous iron to ferric so as to enhance its removal by pH adjustment or the reduction of chrome (VI) to chrome (III) as part of a metals precipitation process.
  2. Chemical precipitation processes, assisted where appropriate by particle de-armouring and high shear mixing techniques so as to improve the reagent utilisation efficiency, the reaction rates and the degree of reaction completion.
  3. Enhanced removal of specific components by co-precipitation and/or sorption techniques.
  4. High rate clarification.
  5. Sludge thickening.
  6. Sludge dewatering
  7. High rate floatation of both solid and liquid fractions.
  8. Emulsion breaking.
  9. Separation of particulate suspensions, including colloidal suspensions.
  10. Separating "oil” free solids and "oil” free water from "oil” – water – solids mixtures. (In this instance "oil” refers to any light (lighter than the water phase) non-aqueous phase liquid.)
  11. High rate and high efficiency addition of gaseous reagents.
  12. Ultra-filtration processes that can also handle the effects of biological contaminants and other organic contaminants.
  13. Reverse osmosis processes using ultra low pressure but high rejection membranes.
  14. Ion exchange.
  15. Evaporation and crystallisation should that be necessary.

The installed process would provide a cost effective, practical and reliable solution and it would be designed to suit the analysis of the impacted water and the expected variability over time of the analysis and the flow. The design would also take into account the whole life cycle cost, including the disposal options for the precipitation residues and for any brine that cannot be recycled within the process. The Miwatek process is modular, making feed water flow and quality changes easy to manage. In most cases the modules can be integrated with existing infrastructure.