Rev. Energ. Ren : Power Engineering (2001) 63-67
A Novel Electro-Chemical Process for Water Treatment
M. S. Khanniche,* P. G. Morgan**, K. N. Khanniche**, C. P. Jobling*and N. Khanniche*
*University of Wales Swansea, Department of Electrical & Electronic Engineering, Singleton Park Swansea, UK
**Axonics Limited, Swansea, UK.
Abstract – Advanced power electronics, instrumentation and real time control have been successfully
applied to municipal drinking water as a pre-treatment process and to wastewater for the removal of
phosphate. In addition the process has been successfully used for industrial effluent processing for the
removal of heavy metals, hydrocarbon oils and greases and bacteria from coolants and other industrial waste
streams. Typically, such waste streams have been collected in storage tanks for disposal to land fill sites,
pumped to sewer or processed on site by either liquid chemical and or biological treatment.
Electro-chemical water treatment is achieved by passing polluted water between two or more electrodes.
Excitation of the electrodes is controlled by an advanced programmable power electronic system, which can
provide a variable AC/DC power source. In addition, real time monitoring of key physico-chemical
parameters important to water quality provide the knowledge base for automatic feed back control and adjust
to fluctuating changes in influent water quality.
The system has been extensively trailed, and the results of the process verified by independent analytical
testing agencies. The benefits of this ‘clean’ technology include reduced capital and operating costs
compared to conventional treatment processes, reduced environmental impact, improved health and safety,
as well as opportunities for water recovery, recycling and re-use.
Résumé – L’électronique de puissance moderne, l’instrumentation et le contrôle en temps réel ont été
appliqués avec succès au traitement des eaux potables et aux flots d’eaux usées. De plus le processus a été
utilise avec succès po