An apparatus for treating PFAS-contaminated fluid includes a housing having an inlet to receive untreated fluid at a first distal end and a outlet for removal of treated fluid at a second distal end, the housing having an open interior. A slip ring is attached to the second distal end and a rotatable shaft located within the open interior is electrically connected to the slip ring. At least one reduction-promoting cathode and anode pair and at least one oxidation-promoting cathode and anode pair are disposed on the rotatable shaft. In use, the at least one reduction-promoting cathode and anode pair and the at least one oxidation-promoting cathode and anode pair are rotated to mix the untreated fluid, and create a reductive process along with an oxidative process to facilitate degradation of PFAS in the untreated fluid.

A system and method for treating flowing water systems with a plasma discharge to remove or control growth of microbiological species. Components of the water system are protected from being damaged by excess energy from the electrohydraulic treatment. Ozone gas generated by a high voltage generator that powers the plasma discharge is recycled to further treat the water. A gas infusion system may be used to create fine bubbles of ozone, air, or other gases in the water being treated to aid in plasma generation, particularly when the conductivity of the water is high. An electrode mounting assembly maintains a high voltage electrode and ground electrode at a fixed distance from each other to optimize plasma generation. An open support structure for the high voltage generator circuit physically separates spark gap electrodes and resists metal deposits that may disrupt discharge of a high voltage pulse to create the plasma.

An electrolysis electrode having an array of nanotubes is disclosed. The electrode may provide high chlorine evolution and hydroxyl radical production activity for electrochemical wastewater treatment. The electrode includes a substrate and a nanotube array contacting the substrate. A semiconductor material overlays the top surface of the nanotube array. The nanotube array may be a stabilized blue-black TiO.sub.2 nanotube array, and the overlying semiconductor material may include TiO.sub.2. Several other improvements may enhance the service life of the electrode. For example, the electrode may be subjected to secondary anodization to enhance the binding between the nanotube array and substrate. During manufacture the electrode may be processed with ethanol to reduce cracks in the nanotube array. Additionally, during electrolysis the voltage polarity applied the electrode may be periodically switched so that the electrode operates alternatively as an anode or a cathode depending on the voltage polarity.

This invention relates to a process and reactor for the electrochemical production of hydrogen peroxide. The process comprises producing protons at an anode, transporting produced protons through a cation exchange membrane into catholyte, producing peroxide anions in a cathode membrane assembly comprising a gas diffusion electrode and an anion exchange membrane adjoined to said gas diffusion electrode and in contact with said catholyte, which produced peroxide anions migrate at least in part into said catholyte, and combining protons and peroxide anions in said catholyte to form hydrogen peroxide.

An irrigation system is provided. The irrigation system includes a reservoir for storing irrigation water, an electrolytic gas generator, a detector, and a control unit. The electrolytic gas generator is in fluid communication with the reservoir to output a first gas and a second gas generated by the electrolytic gas generator to the irrigation water. The detector is arranged in the water reservoir to detect the concentrations of dissolved first gas and dissolved second gas of the irrigation water to obtain dissolved gas concentration information. The control unit electrically connects to the detector and the electrolytic gas generator receives the dissolved gas concentration information and adjusts the voltage applied to the electrolytic gas generator according to the dissolved gas concentration information to control the type of gas generated by the electrolytic gas generator and the concentrations of dissolved first and second gas of the irrigation water.

An ozonated water generating device includes a first housing, a second housing on the first housing, and a catalytic electrode disposed in a space in the first and second housings. The catalytic electrode includes an anode, a cation exchange membrane, and a cathode. The device includes a cushion at least one between the anode and the first housing and between the cathode and the second housing, and at least one pusher in at least one of the first housing and the second housing. The pusher penetrates the first or second housing to push the cushion toward the catalytic electrode, or to directly push the catalytic electrode. The pusher is positioned to ensure pushing on at least the center of the catalytic electrode. And the pressure of the pusher brings the anode, the cation exchange membrane, and the cathode into pressure contact with each other.

The present invention relates to floating lakes and to the treatment of the water in such lakes. The present invention further relates to large floating lakes that can be installed within a natural or artificial water body to improve water conditions that are unsuitable for recreational uses. The floating lake can be provided with a chemical application system; a filtration system including a mobile suctioning device and filters; a skimmer system, and optionally a coordination system.

A faucet for dispensing a fluid includes a spout, a pull-out spray head removably coupled to the spout and including an outlet, and a valve assembly in fluid communication with the outlet. Additionally, the faucet includes a fluid treatment assembly configured to output a treatment into the fluid. The faucet further comprises a first flow path and a second flow path.

A fluid treatment unit (TU) comprises a first anode electrode (5), a second grounded electrode (7) and an ultrasound generator (12) mounted to the grounded electrode (7), the grounded electrode (7) and a facing first anode electrode (5) defining between them a treatment zone (9), the unit TU having an inlet (2) for introduction of fluid to the treatment zone (9) and an outlet (3) for egress of treated fluid from the treatment zone (9), the treatment zone (9) providing a flow path along which fluid entering through the inlet (2) is flowable towards the outlet (3), the flow path extending substantially along the surface of both the second ground electrode (7) and a facing first anode electrode (5).

A system and method for remediation of polluted sites, implementing a combination of chemical and biological breakdown modes on the contaminating compounds. The system includes at least one reactor for production in situ of reagents required for the breakdown modes. The reactor includes at least three types of substantially independent electro-cells for production of Fenton reagents and dissolved oxygen. The method according to the invention includes utilizing at least one reactor which comprised of substantially independent electro-cells for producing reagents required for remediation of the polluted sites and a computerized controller loaded with data obtained from a site survey, measurements made by instruments and programmed sequence.

The existing remediation techniques encounter in serious difficulties due to poor process control. Using the system according to the present invention allows control of the parameters and acceleration of the remediation process.