A method and device for using electrokinetic forces for thickening or dewatering municipal biosolids is provided. The method uses chlorine dioxide to accelerate and improve the efficiency of electrokinetic dewatering.

A method and device for using electrokinetic forces for thickening or dewatering municipal biosolids is provided. The method uses chlorine dioxide to accelerate and improve the efficiency of electrokinetic dewatering.

A method of pumping an aqueous fluid through an electroosmotic membrane situated between a cathode and an anode includes oxidizing water to O.sub.2 at the anode and reducing O.sub.2 at the cathode. A potential difference E between the cathode and the anode is 1.4 V or less.

A method of pumping an aqueous fluid through an electroosmotic membrane situated between a cathode and an anode includes oxidizing water to O.sub.2 at the anode and reducing O.sub.2 at the cathode. A potential difference E between the cathode and the anode is 1.4 V or less.

A moisture control system includes an anode coupled to an insulation blanket that is positioned between an inner wall and an outer wall of an aircraft fuselage, a cathode coupled to an interior surface of the outer wall, and a power control unit coupled to the anode and the cathode to apply voltage across the anode and the cathode. When the voltage is applied across the anode and the cathode, moisture is drawn away from the anode and toward the cathode on the interior surface of the outer wall and guided along a drainage path provided via structural members disposed between the inner wall and the outer wall toward a drainage port.

According to the method and device for a membrane-based processing of ambient water-group species, the species are captured in a space environment by an ionic liquid disposed on a presenting face of a semipermeable membrane. To seamlessly process the captured species for in-situ resource utilization without need of moving parts, they are urged to pass through the membrane by a predetermined electric potential difference applied between opposite sides of the membrane via electrode contacts; an initial storage envelope is provided by an impermeable membrane attached to a back face of the semipermeable membrane. The device can be stowed in a manner of rolled plastic and deployed by unrolling. The device can also be configured as a scientific instrument to monitor a flux of ambient water-group species impinging in the space environment using electrical measurements.

According to the method and device for a membrane-based processing of ambient water-group species, the species are captured in a space environment by an ionic liquid disposed on a presenting face of a semipermeable membrane. To seamlessly process the captured species for in-situ resource utilization without need of moving parts, they are urged to pass through the membrane by a predetermined electric potential difference applied between opposite sides of the membrane via electrode contacts; an initial storage envelope is provided by an impermeable membrane attached to a back face of the semipermeable membrane. The device can be stowed in a manner of rolled plastic and deployed by unrolling. The device can also be configured as a scientific instrument to monitor a flux of ambient water-group species impinging in the space environment using electrical measurements.

A device for controlling acidity of electrolytes and the oxidation states or concentrations of selected constituents for treatment of liquid media using electricity for electrochemical separation and regeneration of forward osmosis draw solutions includes a FO unit arranged for osmotic solvent separation from a feed water stream, and an electrochemical solvent separation and draw solution regeneration unit incorporating an electrochemical cell, arranged to use diluted draw solutions to generate a concentrated draw solution, a TPW stream and an osmotic agent. The concentrated draw solution may be arranged to reenter the forward osmosis unit.

A device for controlling acidity of electrolytes and the oxidation states or concentrations of selected constituents for treatment of liquid media using electricity for electrochemical separation and regeneration of forward osmosis draw solutions includes a FO unit arranged for osmotic solvent separation from a feed water stream, and an electrochemical solvent separation and draw solution regeneration unit incorporating an electrochemical cell, arranged to use diluted draw solutions to generate a concentrated draw solution, a TPW stream and an osmotic agent. The concentrated draw solution may be arranged to reenter the forward osmosis unit.

A deep sludge dewatering method using electroosmosis with filter bags, including (1) placing a filter bag on a slope on which a cathode electrode is arranged; (2) injecting sludge into the filter bag, and after the filter bag is filled with the sludge, closing an inlet of the filter bag; and (3) laying an anode electrode on the filter bag filled with the sludge, and connecting the cathode electrode and the anode electrode to a DC power supply via an electric wire, and carrying out energization for electroosmosis so that water flows down the slope. The present invention can be used for recycling of the sludge produced in underground and tunnel excavation projects, and has the advantages of large processing capacity, simple process, good treatment effect and available resource recycling.