A water treatment device includes: an electrode structure installed in a storage space in which water is stored or in a flow space in which water flows so as to cause an underwater plasma discharge; and a gas supply module for supplying a gas to the storage space or the flow space such that bubbles are supplied underwater, as a discharge gas, to the electrode structure, wherein the electrode structure includes: a first electrode; a second electrode disposed opposite the first electrode; and a dielectric member disposed in a space between the first electrode and the second electrode.

A submerged plasma generator includes: a reactor inside of which a flow path, through which a working fluid passes, is formed along a lengthwise direction; and a dielectric insert which is disposed in the flow path so as to define the flow path into one space and the other space, and has formed therein a through-hole to generate micro-nano bubbles by cavitation in the working fluid fed into the one space of the flow path, and includes, a metallic catalyst which undergoes friction with the working fluid flowing through the through-hole and releases electric charges of the same polarity to the micro-nano bubbles to collapse the micro-nano bubbles and generate plasma; in which the other space of the flow path in which the working fluid ionized by exposure to the plasma travels is formed in an oval structure.

A system includes a first separator configured to receive waste water, retain a first portion of the waste water, and separate the first portion of the waste water into a first vapor and a first solid material; and a second separator in fluid communication with the first separator, the second separator being configured to receive a second portion of the waste water from the first separator and to separate the second portion of the waste water into a second vapor and a second solid material, the second separator including a first condenser, a heating element, and a first electrocoagulation unit. Related apparatus, systems, techniques and articles are also described.

A multistage greywater treatment system including at least one separation stage, at least one solid removal stage, and at least one disinfection stage. The at least one separation stage is configured to separate water from one or more water draining device into at least three outputs including a first intermediate greywater. The at least one solid removal stage is configured to receive the first intermediate greywater and dissolve solids from the first intermediate greywater to output a second intermediate greywater. The at least one disinfection stage is configured to receive the second intermediate greywater. The resultant greywater may be provided to at least one recycled water consuming device after passing through the at least one separation stage, at least one solid removal stage, and the at least one disinfection stage.

Compositions made of laminate comprised of porous carbon nanotube (CNT) are disclosed. Uses of the Compositions, particularly for reducing a formation of a load of a microorganism or of a biofilm, are also disclosed.

Bismuth-based, chloride-storage electrodes and rechargeable electrochemical cells incorporating the chloride-storage electrodes are provided. Also provided are methods for making the electrodes and methods for using the electrochemical cells to remove chloride ions from a sample. The chloride-storage electrodes, which are composed of bismuth metal, can store chloride ions in their bulk by forming BiOCl via an oxidation reaction with bismuth in the presence of an oxygen source.

The present disclosure relates to a biocide-generating device for outputting a biocide to a water system. The biocide-generating device includes a power circuit positioned within a housing that defines an electrolytic cell of the biocide-generating device.

An algae treatment device of the present invention is installed in a ship or a barge and selectively destroys only the air-sacs of algae by discharging high-voltage micro pulses into waters of interest in which green tide or red tide has occurred. Thus, the algae treatment device can efficiently solve green tide or red tide by treating algae using a minimal amount of chemicals, or none at all.

A liquid treatment apparatus includes a water pump and a plasma jet generating device. A liquid inlet of the water pump is immersed in a liquid. A liquid outlet of the water pump is configured to eject the liquid from the liquid inlet out of the water pump without artificial bubbles in the liquid. A gas inlet of the plasma jet generating device is configured to be located out of the liquid. A pair of electrodes of the plasma jet generating device is configured to generate plasma jet by the gas from the gas inlet. The plasma jet outlet is configured to be immersed in the liquid and in proximity to the liquid outlet of the water pump so that the gas is automatically entrained into the gas inlet of the plasma jet generating device when the liquid is ejected out from the liquid outlet.

A system in which water flowing through the system flows in proximity to an ion generation device and to a UV radiation source combines silver photochemistry principles, heavy metal toxicity, and UV radiation to form a highly effective combined water disinfection process. Using ion generation and UV irradiation, the system synergistically improves the disinfection and bactericidal effects of ion generation or UV radiation working individually by making ion-exposed microorganisms more susceptible and less resistant to the bactericidal effects of UV radiation. The UV radiation source uses a manual wiping system to remove buildup that is a result of water supply minerals attaching to quartz sleeves used within the UV radiation source. The present invention introduces a device or other obstructive structure that creates a flow pattern that provides additional “wiping” of the quartz sleeves on a continual basis in conjunction with manual wiping.