Provided are hybrid electrochemical and membrane-based systems for removing silica from water stream to achieve ultra-pure water. The silica concentration of a feed water stream may dictate the most effective and economical variation of disclosed hybrid processes to use. For example, for a feed water stream having a silica concentration of 1-30 ppm, a hybrid system for treating the feed water includes an electrodialysis reversal unit, the electrodialysis reversal unit comprising an inlet stream and a product outlet stream; a reverse osmosis unit, the reverse osmosis unit comprising an inlet stream and a product outlet stream, wherein the inlet stream of the reverse osmosis unit comprises the product outlet stream of the electrodialysis reversal unit; and an electrodeionization unit, the electrodeionization unit comprising an inlet stream and a product outlet stream, wherein the inlet stream of the electrodeionization unit comprises the product outlet stream of the reverse osmosis unit.

A universal water purification system and method that can desalinate salt water or just filter fresh water. Preferably, the system is portable and relatively lightweight and provides for emergency or recreational safe power and water accessibility. The components of the system can be installed on an aluminum frame and preferably include a waterproof front control panel, four pre-filters, a reverse osmosis membrane, ultraviolet (UV) LED lamp, a high pressure reverse osmosis (RO) pump and a low pressure water supplying pump, an electro valve preferably with a manual override in case of power loss, an additional electro valve, a plurality of quick connect couplings (preferably three), a power bank, an internal inverter, a universal power supply and battery charger preferably disposed within a military style suitcase. In a preferred embodiment, the suitcase can be a PELICAN brand case. The system can provide a power bank, universal power supply (12V, 24 V, 90-260V 409-70 HZ), wide range battery charger, and water filtration and desalination unit for both outdoor and indoor applications.

Devices suitable for use in an advanced oxidation method for organic and inorganic pollutants deploying OH* radicals and ozone is disclosed. Optionally, a first discharge device, providing OH* radicals and second discharge device providing ozone, are combined to provide desirable chemical and biocidal characteristics. Further, efficient mixing systems for transferring the radicals to the target fluid are disclosed.

A system for modifying pH in an aqueous environment comprises an aqueous salt solution feed stream having a first pH and an electrochemical device positioned proximate an aqueous restoration area. The electrochemical device is configured to receive the feed stream and convert the feed stream to an acid stream and a base stream having respective predetermined pH values. A first effluent stream comprises the base stream, wherein the first effluent stream has a second pH that is higher than the first pH. The first effluent stream is delivered proximate the aqueous restoration area. A second effluent stream comprises the acid stream, wherein the second effluent stream has a third pH that is lower than the second pH.

Disclosed is a water treatment device such as a water purifier. In particular, a water treatment device capable of producing sterilizing water is disclosed. The device includes a sterilizing water producing module for electrolyzing raw water to produce sterilizing water, wherein the sterilizing water producing module includes a plurality of first electrodes and a plurality of second electrodes arranged alternately with each other and spaced from each other, wherein the first and second electrodes have opposite polarities to each other, wherein a polarity of each of the first electrode and the second electrode is switchable to between a positive potential and a negative potential, such that the sterilizing water producing module operates such that a positive potential operation and a negative potential operation are alternately repeated, wherein a magnitude of voltage or current applied to the sterilizing water producing module under the negative potential operation is smaller than a magnitude of voltage or current applied to the module under the positive potential operation.

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.

A device for removing ions from a flow of water includes a first electrode and a counter-electrode opposite the first electrode in the flow of water. The first electrode contains at least one material which is capable of intercalating one or both of Mg.sup.2+ and Ca.sup.2+ ions in the flow of water. The counter-electrode can include a material capable of binding to anions in the flow of water.

The device for treatment of liquids by the help of generation of an electrically powered discharge of low-temperature plasma in liquid environment where is, when the liquid flows, possible to achieve generation of cavitation or super-cavitation which consists of mutually in series connected a pressure regulator and a cavitation tube which is formed by two mutually connected inlet chamber, confusor, working chamber, diffusor and a discharge chamber, where the essence of the invention is that there is in the inlet chamber in its lengthwise axis in direction of liquid flow placed a powered electrode which by its free end reaches into the working chamber and to it is electrically conductive connected a high voltage source whereas the powered electrode is electrically insulated from the body of the cavitation tube and also is in the discharge chamber placed a grounding electrode which is in electric contact with the liquid. Further is the essence of the invention the method of treatment of liquids by the help of this device.

The present invention relates to a hybrid system for water treatment, desalination, and chemical production. The hybrid system of the present invention includes a photoanode, an anode chamber, an anion exchange membrane, a middle chamber, a cation exchange membrane, a cathode chamber, and a cathode. In the middle chamber, saltwater or seawater is desalinated by photoelectrochemical electrodialysis. Chloride ions are generated during the desalination, transferred to the anode chamber, and activated by the photoanode. In the anode chamber, wastewater is treated by the activated chloride ions. In the cathode chamber, at least one chemical species selected from the group consisting of water, oxygen, and carbon dioxide is reduced by electrons supplied from the photoanode.

Water deionization systems based on electrochemical water desalination or softening using a capacitive or intercalative deionization devices including a stack of electrochemical cells. Each cell includes first and second electrodes and an ion exchange membrane. Each cell includes inlet and outlet channels with control valves that control the separation of the source water into brine (e.g., concentration) and clean water (e.g., purification) streams. The deionization device or module may include multiple electrochemical cells connected electrically in series, parallel or a combination of both. The cells may also be in serial, parallel, or combined fluid communication. The output water of one or more streams from each cell or collection of cells may be recirculated and combined with one or more input water streams to improve the electrochemical energy efficiency of the cells. The electrochemical cells at different rows may have varying electrode thickness, area and loading of the active material.