For bio-electrically generating electric power from organic ingredients of a waste water flowing in a flow direction, an anode is immersed in the waste water in a first spatial area, and oxygen is supplied to a cathode which is electrically connected to the anode and arranged in a second spatial area delimited from the first spatial area by means of a proton-permeable membrane. A voltage between the anode and the cathode is increased by a DC/DC converter located at the anode and the cathode, and a further voltage between a further anode in said or a further first spatial area and a further cathode in said or a further second spatial area is increased by a further DC/DC converter located at the further anode and the further cathode. A DC voltage link is charged with the DC/DC converter and the further DC/DC converter connected in parallel to the DC voltage link.

A method for treating tailings includes the step of S1: mixing the tailings to be treated with a neutral active aqueous solution and then drying the tailings, wherein the neutral active aqueous solution is prepared from water via an electrocatalytic water device, and the circulation time of the water in the electrocatalytic water device is 5-60 min, and the mass ratio of the tailings to the neutral active aqueous solution is 1:1-10:1.

Embodiments of the present invention encompass electrodes, electrochemical cells, electrocoagulation systems, and methods using the electrodes, electrochemical cells, electrocoagulation systems. The electrodes may be used in electrocoagulation cells and/or systems to treat water.

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

A hydrogen generator including a series of plates positioned in an electrolysis chamber. The plates are configured to generate hydrogen. The chamber has a water inlet configured to receive water from a water source and a hydrogen outlet configured to allow the hydrogen to exit therefrom. The plates include a positive plate, a negative plate, and a neutral plate. Each of the plates has through-holes configured to allow the water and the hydrogen to flow therethrough. The positive and negative plates are configured to be connected to positive and negative terminals, respectively, of an electrical power source. The water inside the chamber forms an electrical connection between the positive and negative plates that splits the water into the hydrogen and oxygen.

The present invention provides for a device useful or removing dissolved ions from water comprising or configured to comprise composite resin electrodes. The present invention provides for a device useful for removing dissolved ions from water comprising or configured to comprise composite resin electrodes. The present invention also provides for a method for removing dissolved ions from water comprising providing said device, and using it thereof.

Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

An electrochemical cell for wastewater treatment comprises a catalyst coated membrane, an open pore mesh placed on each side of the catalyst coated membrane, and a compression frame placed next to each of the open pore meshes. Each compression frame has compression arms spread within the area delimited by the perimeter of the frame to apply a uniform compression force through fasteners which protrude through the compression arms, the open pore meshes and the catalyst coated membrane. Each open pore mesh comprises a flat surface and an embossed surface. The embossed surface can comprise embossed areas around the holes in the open pore mesh, transverse embossed areas which, in the assembled cell, are placed next to the compression arms of the compression frames and peripheral embossed areas along the perimeter of the open pore meshes. The embossed surface provides an improved protection against electro-circuiting.

A desalination apparatus includes a membrane assembly disposed between a first fluid container and a second fluid container and in fluid contact with a first aqueous solution in the first fluid container and a second aqueous solution in the second fluid container. The membrane assembly includes a semipermeable membrane having a first side to be in fluid contact with the first aqueous solution and having a second side to be in fluid contact with the second aqueous solution; an electrode assembly disposed adjacent the second side of the semipermeable membrane and to contact the second aqueous solution; and power circuitry to apply charge to the electrode assembly to provide an ion concentration at the second side of the semipermeable membrane that is at least equal to the ion concentration on the first side of the semipermeable membrane.

The present invention provides a multi-stage system for treating greywater comprising an electrochemical treatment module configured to carry out electrooxidation and electrocoagulation processes and a filtration module comprising a multistage filtration system for the treatment and removal of chemical and biological contaminants in greywater.