Abstract: There is provided a modular water treatment unit for a water treatment system comprising two or more ribs arranged to form at least part of a container and one or more separators, said one or more separators disposed between adjacent ribs, as well as a rib therefor. Also described is a water treatment system comprising a tank with an inlet for supplying contaminated water, one or more modular water treatment units located within the tank, said water treatment units comprising one or more electrodes and an electricity supply operably connected to the electrodes. Also provided are a method of constructing a modular water treatment unit for a water treatment system and a method of operating a water treatment unit.

Abstract: The apparatus comprises a treatment reservoir defining first and second treatment zones separated by a porous membrane. Carbon-based adsorbent material capable of electrochemical regeneration is provided in said first and second treatment zones. An agitator is operable to distribute the adsorbent in aqueous organic waste liquid contained in the first and second treatment zones. First and second electric current feeders are operably connected to the adsorbent in the first and second treatment zones respectively. A controller operates the electric current feeders to pass an electric current through the adsorbent in the treatment zones in one direction to regenerate the adsorbent in one of the treatment zones and to then reverse the direction of the current applied to the adsorbent to regenerate the adsorbent in the other treatment zone. Further apparatus is described which facilitates aqueous waste water treatment in a continuous manner.