A liquid waste treatment system includes: a baffle tank subsystem for particle settling; a preprocess tank subsystem downstream of the baffle tank subsystem; a process tank subsystem downstream of the preprocess tank subsystem; and a storage tank subsystem downstream of the process tank subsystem for the storage of treated liquid. A Microbial Fuel Cell (MFC) processing module may be included and may be inserted into the preprocess tank subsystem or implemented in a second process tank downstream of the process tank subsystem. A faster disinfection may occur in the process tank subsystem, and a slower disinfection may occur in the second process tank according to distinct respective kill curves. An electrochemical cell may be operated in a pulse mode in liquid waste in a pulsed mode.

Example methods and systems for segregation and treatment of waste water streams for enhanced oil recovery are disclosed. One example method includes generating concentrated solution by treating, using a forward osmosis process, waste water of one or more gas streams from a gas plant associated with one or more gas wells, where draw solution of the forward osmosis process includes produced water from one or more crude oil production traps, and the waste water contains kinetic hydrate inhibitor (KHI). The concentrated solution is treated using an oxidation process to generate oxidized solution by decomposing the KHI in the waste water. The oxidized solution is injected into an oil reservoir through a water injection well for enhanced oil recovery.

Disclosed herein are Fenton filters comprising a porous substrate and a catalyst coating the porous substrate, wherein the catalyst includes a matrix and single metal atoms incorporated in the matrix. Also disclosed herein are methods of generating radicals from an oxidant, electrolyzers, methods of generating hydrogen peroxide, and water treatment systems.

In accordance with the principals of the present invention, an electrolytic generator and method of electrolytic generation are provided. An electrolytic stack includes of a first electrode, a second electrode, and a polymer-electrolyte membrane placed between the first and second electrodes. A first fluid passage provides fluid passage over the first electrode while a second fluid passage provides fluid passage over the second electrode. A third fluid passage provides fluid connection between the first fluid passage and the second fluid passage such that the fluid flows from the first fluid passage to the second fluid passage via the third fluid passage. An electronic current is provided between the first electrode and the second electrode when a voltage bias is applied to the electrodes.

A modular drainage filter system for treatment of agricultural drainage water such as residual streams derived from agricultural activities is provided. The system has an inlet for receiving ADW, at least one bio electrochemical reactor arranged to denitrify the ADW and at least one outlet for expelling at least partly denitrified ADWT. The drainage filter system further includes one or more inlet sensors arranged upstream the BER and processing means for determining the optimal energy provided to the BER based on the data from the one or more inlet sensors thereby allowing effective operation of the drainage filter system.

A water treatment system is disclosed having electrolytic cell for liberating hydrogen from a base solution. The base solution may be a solution of brine for generating sodium hypochlorite, or potable water to be oxidized. The cell has first and second opposing electrode end plates held apart from each other by a pair of supports such that the supports enclose opposing sides of the end plates to form a cell chamber. One or more inner electrode plates are spaced apart from each other in the cell chamber in between the first and second electrode plates. The supports are configured to electrically isolate the first and second electrode plates and the inner electrode plates from each other. The first and second electrode plates are configured to receive opposite polarity charges that passively charge the inner electrode plates via conduction from the base solution to form a chemical reaction in the base solution as the base solution passes through the cell chamber.

Described is a combination method, including a device and system for disinfecting and decontaminating water lines, for example, dental water lines, in the absence of a primary chemical component.

The invention provides a device to purify waste water by a two-step procedure containing an electroflotation unit and an electrical disinfection unit integrated into the same overall construction. Characteristic to the construction is that the said two units have a common anode and two individual cathodes which can be in different potentials in respect to the common anode.

Disclosed herein methods for combating biofouling in a liquid, e.g. an aqueous medium by providing a surface coated with at least one laser-induced graphene (LIG) layer in said liquid medium. Particularly disclosed herein method and devices for treating water comprising passing a water stream through a membrane module equipped with at least one spacer coated with at least one layer of LIG, and optionally by applying an electric potential to the at least one LIG layer to achieve a bactericidal effect in the water stream. Specifically, disclosed herein a polymeric mesh suitable for use as a spacer in a membrane module in water treatment application, said mesh being at least partially coated with LIG.

This application relates to a water treatment process. The process comprises contacting contaminated water with a catalyst, introducing hydrogen and an oxygen-containing gas into the contaminated water, and reacting hydrogen and oxygen in the presence of the catalyst and the contaminated water.