A waste water treatment apparatus utilizing electrochemical technology. Electrochemical waste water treatment is based on the application of an electric field between an anode and a cathode to the waste water. The apparatus for waste water treatment comprise a channel extending through a housing between an inlet and an outlet and a water treatment zone between the inlet and outlet. The apparatus further comprise first and second spaced apart electrodes having working ends for treating waste water in the treatment zone, and an electrode feed arrangement for feeding the first and second electrodes towards the channel to control the spacing between the working ends of the first and second electrodes.

A floor scrubbing apparatus includes a reservoir for an aqueous salt solution disposed in the floor scrubbing apparatus. An immersion device comprising a submersible housing with at least two iridium-coated electrodes spaced apart from each other within the submersible housing is adapted to be immersed into the reservoir. The floor scrubbing apparatus also includes a control module electrically coupled to the electrodes, wherein the control module controls application of electricity to cause a first electrode to be positively charged and a second electrode to be negatively charged.

An electro-anti deposit device is coupled to an irrigation pipe for removing mineral deposit from drippers of the pipe. The electro-anti deposit device includes an engine configured to move the electro-anti deposit device along the pipe. The electro-anti deposit device also includes a mineral deposit removal module. The mineral deposit removal module includes a water container, a battery, and two electrodes. The water container may be configured to create an ionic environment at a dripper. The dripper may be covered with the mineral deposit. The battery may be configured to generate electric current. The two electrodes may be connected to two poles of the battery with a space separating tips of the two electrodes.

The present disclosure provides an electrolytic module unit based on a boron-doped diamond (BDD) electrode, including a water flow guide module and an electrolytic module. The electrolytic module is provided within the water flow guide module. The electrolytic module includes a BDD electrode including a main body portion and a plurality of branch portions disposed on two sides of the main body portion. The main body portion and the plurality of branch portions on two sides of the main body portion constitute a fishbone-like structure. The BDD electrode of the electrolytic module unit is of the fishbone-like structure.

An electrochemical oxidation reactor includes rotatable electrodes inside a reactor vessel. The electrodes treat liquid within the reactor and are mounted to support plates, which in turn are mounted on each of two independently-driven shafts. The plates are attached to each other in a spaced relationship so that a gap is formed therebetween. The gap is sized to receive liquid to be treated so that liquid located within the gap will react with the electrodes. The shafts are rotatable at equal or different relative rotational speeds and directions. Additionally, each shaft may be independently linearly displaced in an oscillatory movement at equal or different frequencies. The relative shaft rotation, direction and axial vibration translate similar movements to the electrodes and such movement generates turbulence to the liquid located within the gap. The turbulence increases the interaction between liquid and the electrodes.

A dewatering apparatus for cellulosic materials includes a chamber for an aqueous solution of a cellulosic material, an inner electrode in the chamber, an outer electrode in the chamber about the inner electrode, and a power supply connected to the inner electrode and the outer electrode applying a voltage potential across the electrodes to remove water associated with the aqueous solution and to dewater the cellulosic materials.

A device for purifying water. The device includes an outer casing; a cathode electrode which is arranged in the inner part of the device and is the shape of a generalized cylinder sleeve; an anode electrode, which is the shape of a generalized cylinder sleeve and which remains inside the cathode electrode so that between the anode electrode and cathode electrode remains, in a transverse direction, a gap for conveying the water. The anode electrode includes at least a first anode material. The device further includes an anode electrode support, a part of which is provided inside the anode electrode. The anode electrode support includes in its lower part a flange which is arranged to support the anode electrode from its lower part, whereby the anode electrode can be lifted by means of the anode electrode support out of the cathode electrode and is thus replaceable.

In alternative aspects, the invention provides electrocoagulation processes and apparatus in which the anode oscillates in the electrochemical cell. In some embodiments, this facilitates control of the mixing conditions at the electrode surface independently from the flow through the cell. A constant DC current may be applied in the electrocoagulation, so that as the anode moves closer to a cathode, the cell voltage will oscillate. This may for example be carried out to provide a comparable degree of electrocoagulation with a net reduction in the energy consumption compared to a non-oscillating cell.

A floor scrubbing apparatus includes a reservoir for an aqueous salt solution disposed in the floor scrubbing apparatus. An immersion device comprising a submersible housing with at least two iridium-coated electrodes spaced apart from each other within the submersible housing is adapted to be immersed into the reservoir. The floor scrubbing apparatus also includes a control module electrically coupled to the electrodes, wherein the control module controls application of electricity to cause a first electrode to be positively charged and a second electrode to be negatively charged.

A three-dimensional photo/electrodialysis unit includes four compartments. A first compartment holds a three-dimensional electrode and a group of one or more electrochemically active redox species. A first electroactive cation selective membrane couples the first compartment to a second compartment that provides a first feedstock. An electroactive anion selective membrane couples the second compartment to a third compartment that provides a second feedstock. And a second electroactive cation selective membrane couples the third compartment to a fourth compartment that holds a second group of one or more electrochemically active redox species.