The wastewater treatment apparatus of present invention has an electro-coagulation unit for removing contaminants with at least one anode and at least one cathode and an electro-oxidation unit for oxidizing contaminants with at least one anode and at least one cathode wherein oxidants are electrochemically generated. Based on the type of wastewater, the apparatus can have an electro-flotation unit between the electrocoagulation unit and the electro-oxidation unit. The apparatus also has an oxidant removal unit which can have a metal ion-liberating electrode for reacting with and removing residual oxidants. In some cases, portions of effluent from the oxidant removal unit can be recirculated to the electro-coagulation unit for increased efficiency.

A water treatment process that includes associating the water treatment process with an offshore operation; receiving a treated water stream comprising floc into a flotation vessel. The process further includes injecting an injection stream into the flotation vessel to interact with the treated water stream and removing floc from the treated water stream to form a secondary treated water stream.

A water treatment process that includes associating the water treatment process with an offshore operation; receiving a treated water stream comprising floc into a flotation vessel. The process further includes injecting an injection stream into the flotation vessel to interact with the treated water stream and removing floc from the treated water stream to form a secondary treated water stream.

A system for treating high temperature produced water includes an electrocoagulation unit, a membrane distillation unit in communication with the outlet of the electrocoagulation unit having a hydrophobic membrane with a feed side for receiving the produced water stream and a product side for receiving a deionized water stream. A heat recovery heat exchanger is in communication with the membrane distillation unit for receiving two streams, one from each side of the hydrophobic membrane, such that heat is exchanged between the two streams. A line leaving the heat exchanger returns a heated stream from the heat exchanger to a location in a line upstream of the membrane distillation unit. A brine tank in communication with the membrane distillation unit receives a portion of a stream from the membrane product side and contains a concentrated brine solution containing the portion of the stream from the membrane product side and sodium chloride.

A system for treating high temperature produced water includes an electrocoagulation unit, a membrane distillation unit in communication with the outlet of the electrocoagulation unit having a hydrophobic membrane with a feed side for receiving the produced water stream and a product side for receiving a deionized water stream. A heat recovery heat exchanger is in communication with the membrane distillation unit for receiving two streams, one from each side of the hydrophobic membrane, such that heat is exchanged between the two streams. A line leaving the heat exchanger returns a heated stream from the heat exchanger to a location in a line upstream of the membrane distillation unit. A brine tank in communication with the membrane distillation unit receives a portion of a stream from the membrane product side and contains a concentrated brine solution containing the portion of the stream from the membrane product side and sodium chloride.

An efficient, cost-effective, and efficacious technique for removing coal ash and other pollutants from waterways, ponds, marshes, holding tanks and other water sources and supplies. An apparatus comprising an open cage including electromagnets and/or permanent magnets and/or electrodes is supplied with electrical power to extract materials such as rare earth elements and/or heavy metals. The materials levitate to the surface, forming a slurry while leaving water substantially free of such materials.

A system and method for electromagnetic activation or active metals generation is disclosed herein. This system may include: a cylindrical housing; a plurality of inductor coils connected to a three phase alternating current source, where inductor coils are positioned in an interior space between the cylindrical housing and an exterior face of a conduit; the conduit installed inside the cylindrical housing, where the conduit includes a dielectric section with a perforated baffle a mechanism to secure the conduit to the cylindrical housing, a tube for adding a chemically active agent into the conduit, a dielectric section with a lid and a gas valve positioned on top of the lid at an end of the conduit, and a plurality of metal particles occupying the internal volume of the conduit and maintained in a relative position with respect to the inductor coils.

Radionuclides and other unwanted material in a liquid may be treated, removed or reduced through the use of electromagnetic fields applied to the liquid by electrodes that also function as co-precipitators by leaching polyvalent metal ions into the liquid.

Provided herein are phase separation devices and methods for performing phase separation of an aqueous mixture. Said devices and methods may include a cavitation component for cavitating the aqueous mixture to produce a cavitated aqueous mixture; and an electrosorption component for performing an electrosorptive phase separation of the cavitated aqueous mixture. Such devices and methods may be used for phase separation of aqueous mixtures including algal aqueous mixtures and/or mining or waste water aqueous mixtures, for example.

Provided herein are phase separation devices and methods for performing phase separation of an aqueous mixture. Said devices and methods may include a cavitation component for cavitating the aqueous mixture to produce a cavitated aqueous mixture; and an electrosorption component for performing an electrosorptive phase separation of the cavitated aqueous mixture. Such devices and methods may be used for phase separation of aqueous mixtures including algal aqueous mixtures and/or mining or waste water aqueous mixtures, for example.