Disclosed is a 3-dimensional porous mono-polar electrode body that includes a 3-dimensional porous parent substance, which has a 3-dimensional structure including a side and a remaining side that communicate with each other via a plurality of pores arranged in multiple layers and which is made of a metal material to have dimensional stability, and an electrode catalyst layer applied on the 3-dimensional porous parent substance. The 3-dimensional porous mono-polar electrode body is used to remove microorganisms contained in treatment water to thus minimize the consumption of power, which is required to remove the microorganisms, prevent secondary pollution, and ensure the durability of an electrode.

An apparatus for electrochemical treatment of wastewater has at least one electrolysis cell through which the wastewater to be treated is guided. The electrolysis cell has a multitude of electrode assemblies that have electrodes arranged such that the wastewater to be treated is guided through holes in the electrodes. At least one of the electrode assemblies has three electrodes arranged such that the wastewater to be treated is guided through all the electrodes.

The apparatus for water treatment using in-situ activation of a manganese dioxide catalyst includes: a reaction bath configured to give a space where aqueous organic contaminants are removed by means of reaction with permanganate (MnO.sub.4.sup.) generated by electrochemical oxidation of manganese oxide (MnO.sub.2); a plurality of manganese dioxide catalysts provided at the reaction bath and electrochemically oxidized into permanganate (MnO.sub.4.sup.) by a voltage applied thereto; and a power supply device configured to apply power to the manganese dioxide catalyst so that the manganese dioxide (MnO.sub.2) is electrochemically oxidized into permanganate (MnO.sub.4.sup.).

A flow meter includes a meter body and a pressure sensor. The meter body has a liquid impact surface, a sensing surface opposite to the liquid impact surface, and a mounting hole extending from the sensing surface toward the liquid impact surface. The mounting hole is a blind hole. The pressure sensor is mounted in the mounting hole, and has a resistance value that can be measured and that can be changed correspondingly with a change in liquid pressure caused by a change in flow rate. A device for producing an active hydroxyl free radical solution is also disclosed.

Provided is a system and method using an electrochemical reactor and electrode materials that can effectively treat harmful algae contaminated water supply, such as lake water or seawater. The reactor features the compact design, easy transportation, scalable treatment capacity, and high efficiency for algae inactivation and the degradation of microcystin. The equipment can be installed on boats and docks to directly treat the lake water. It can be driven by electricity provided by grid power, generator, or solar panels, and requires no chemical input.

The present disclosure a rapid degradation and mineralization method of per- and polyhalogenated organic pollutants (PHOPs), including injecting organic wastewater containing the PHOPs into a reaction chamber with a cathodic/anodic electrode system, adding an electrolyte to the organic wastewater and stirring evenly; adding a peroxide I and a peroxide II to the organic wastewater, and turning on a DC stabilized power supply and conducting a reaction, and at the end of the reaction, completing purification of the PHOPs in the wastewater. According to the present disclosure, peroxymonosulfate (PMS) and H.sub.2O.sub.2 are combined in electrolysis to accelerate the PMS decomposition in solution and produce more reactive oxygen species such as, .Math.SO.sub.4.sup.?, OH, singlet oxygen (.sup.1O.sub.2), and a superoxide anion free radical (O.sub.2.sup.?), thereby achieving cooperative of multiple oxidative and reductive reactive oxygen species, and especially increasing the generation of .Math.SO.sub.4.sup.? significantly.

A gas diffusion air-cathode is made with a non-reacting metal as the supporting conducting substrate, such as in the form of a stainless steel mesh.

An apparatus that can be connected to a conventional sprayer bottle for generating ozonated water as a cleaning fluid. The apparatus includes an ozonator element coupled at one end of an electrical cable and an electrical connector at the other end. The ozonator is placed in the bottle and the connector is pressed into an aperture in the bottle sidewall. The bottle is filled with water, submerging the ozonator therein. The spray head with the dip tube is then secured onto the bottle. Electrical energy is provided through the connector to ozonate the water in the bottle for predetermined period of time after which the sprayer bottle contains ozonated water. After another predetermined period of time, the ozonator element is energized again to ensure ozonated water is always available. A related apparatus can be connected between a feedpipe and a water reservoir for making the reservoir an ozonating water source.

The present invention relates to food preparation disinfection treatment methods that disinfect fruits or vegetables, and food preparation surfaces during the preparation of food items in a restaurant environment. The methods include steps such as creating an ozonated concentrate liquid by way of an aqueous ozone generator, disinfecting fruit or vegetables by immersion in the ozonated concentrate liquid, disinfecting one or more of a food preparation surface by misting the ozonated concentrate liquid onto the food preparation surface, neutralizing the odor of the plant tissue by misting the ozonated concentrate liquid onto the plant tissue at periodic mist intervals, and other steps and features including being able to disinfect and oxygenate lettuce in prepackaged produce packaging.

A water purification system utilizes an ionomer membrane and mild vacuum to draw water from source water through the membrane. A water source may be salt water or a contaminated water source. The water drawn through the membrane passes across the condenser chamber to a condenser surface where it is condensed into purified water. The condenser surface may be metal or any other suitable surface and may be flat or pleated. In addition, the condenser surface may be maintained at a lower temperature than the water on the water source side of the membrane. The ionomer membrane may be configured in a cartridge, a pleated or flat plate configuration. A latent heat loop may be configured to carry the latent heat of vaporization from the condenser back to the water source side of the ionomer membrane. The source water may be heated by a solar water heater.