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How to separate heavy metals from waste water in an efficient way?

Innovation Type - Method

Potential beneficiaries - Industries

HOW TO SIMPLIFY THE METAL REMOVAL FROM WASTE WATER?

Waste water treatment from heavy metals is a well-known problem in a production sphere. Our invention is related to the method of waste water treatment and can be used at metal processing, specifically in plating shops. We propose the regulated process of electrochemical treatment of waste waters containing heavy metals that is proceeding in flow-through conditions, with soluble anode and rotating abrazive cathode, accompanied with the heavy metal ions inclusion into the solid phase of forming suspension.
The process involves using of dispersed magnetite particles as catalysts of solid phase ferritization. The dispersed magnetite particles are obtained from grinding of synthesized spheroidal magnetite particles in the reactor of magnetic fluidization installed at the inlet in electrolyzer. At the outlet from electrolyzer the value of suspension magnetization is measured, and also the concentration of solid phase and redox potential of the system. In dependence of these values, the amount of magnetite particles is regulated automatically, and respectively, the current density appied for the water treatment.

ADVANTAGES

  • Increase of efficiency and treatment quality of waste water with removal of heavy metals
  • Possibilitaty to use treated water repeatedly.

Current stage of development - Available for demonstrations – field tests

Where was applied - „TRACOM” SA

Desired collaboration - Comercialization of final product, partenership and investments

Invention Title: Regulated method of electrochemical removal of heavy metals from waste water
Holder: State University of Moldova
Authors: Victor Covaliov, Olga Covaliova
Brevet: 2426
Priority date: 21.06.2001
Address: 60, A. Mateevici str. USM, Chisinau, Moldova
Contact telephone (373 22) 577556
Email: victor136cov@yahoo.com


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