Reactor for treating liquids using variable flow paths

A reactor for removing impurities by electrochemical means from liquids in which the liquid is passed through series of plate shaped reaction electrodes electrically insulated against each other with a liquid speed above a minimum to prevent dissociation into constituent gases, but sufficient to ensure interaction with an electrical current passing between the plate shaped electrodes, the latter having corrugated forms and/or their surfaces being provided with embossed relief patterns to enhance the electrochemical effect between the electrodes, the reactor comprising one or more interconnected units with series of plate shaped electrodes, valve means and holes in the plate shaped electrodes for redirecting the liquid flow into and through the series of plate shaped electrodes, and a control system consisting of a number of sensors at the liquid inlet of the reactor, for measuring the conductivity of the treated liquid, the organic contents of the liquid and the flow of the liquid, means for transferring the measurements to a processor for further treatment, means for transferring output commands from the processor to the valve means for controlling the valve means to selectively redirect the liquid flow and vary the length of the liquid flow path over the plate shaped electrodes, and means for activating or deactivating the electrode unit or units in dependence on the measured parameters.