Methods and systems for acid regeneration of ion exchange resins are disclosed. Acid resins designed for use in a variety of cleaning application using a water source use a treated, softened, acidic water source according to the invention. Various methods of using the softened acidic water generated by acid regenerate-able ion exchange resins are disclosed to beneficially reduce spotting, filming and scale buildup on treated surfaces, reduce and/or eliminate the need for polymers, threshold reagents and/or rinse aids, and using protons generated in the acidic water effluent for triggering events useful in various cleaning applications.

Methods and systems for acid regeneration of ion exchange resins are disclosed. Acid resins designed for use in a variety of cleaning application using a water source use a treated, softened, acidic water source according to the invention. Various methods of using the softened acidic water generated by acid regenerate-able ion exchange resins are disclosed to beneficially reduce spotting, filming and scale buildup on treated surfaces, reduce and/or eliminate the need for polymers, threshold reagents and/or rinse aids, and using protons generated in the acidic water effluent for triggering events useful in various cleaning applications.

Methods and systems for acid regeneration of ion exchange resins are disclosed. Acid resins designed for use in a variety of cleaning application using a water source use a treated, softened, acidic water source according to the invention. Various methods of using the softened acidic water generated by acid regenerate-able ion exchange resins are disclosed to beneficially reduce spotting, filming and scale buildup on treated surfaces, reduce and/or eliminate the need for polymers, threshold reagents and/or rinse aids, and using protons generated in the acidic water effluent for triggering events useful in various cleaning applications.

Water softening device includes water softening tank, neutralization tank, and electrolytic tank. Electrolytic tank generates acidic electrolytic water for regenerating weakly acidic cation exchange resin and alkaline electrolytic water for regenerating weakly basic anion exchange resin. Then, water softening device includes an acidic electrolytic water circulation flow path that circulates the acidic electrolytic water through electrolytic tank, first discharge port, water softening tank, and first water intake port in the stated order, and an alkaline electrolytic water circulation flow path that circulates the alkaline electrolytic water through electrolytic tank, second discharge port, neutralization tank, and second water intake port in the stated order.

The claimed invention relates to a filtering device for purifying a liquid, intended for softening and purifying tap water and other liquids for domestic use. A device for purifying a liquid, having an inlet channel and an outlet channel, consists of at least two tanks, one for a softening agent and one for a regenerating solution, and a control mechanism including a housing, which consists of at least three parts which form chambers and liquid-conducting cavities, at least two pistons, which are located in the chambers and which are linked by means of a cam mechanism to an engine, a saline valve, and a discharge valve; the control mechanism is designed such that the pistons can move simultaneously in the chambers in opposite directions, at the same time alternately shutting off the liquid-conducting cavities in the housing; at least two liquid-conducting cavities are formed between the indicated portions of the housing, and at least one cavity is formed between the closest portion of the housing to the upper portion of the tank for the softening agent and the upper portion of the tank for the softening agent. The technical result consists in increasing the reliability and simplifying the design of a device for purifying a liquid, and in decreasing the weight of the device for purifying a liquid.

The claimed invention relates to a filtering device for purifying a liquid, intended for softening and purifying tap water and other liquids for domestic use. A device for purifying a liquid, having an inlet channel and an outlet channel, consists of at least two tanks, one for a softening agent and one for a regenerating solution, and a control mechanism including a housing, which consists of at least three parts which form chambers and liquid-conducting cavities, at least two pistons, which are located in the chambers and which are linked by means of a cam mechanism to an engine, a saline valve, and a discharge valve; the control mechanism is designed such that the pistons can move simultaneously in the chambers in opposite directions, at the same time alternately shutting off the liquid-conducting cavities in the housing; at least two liquid-conducting cavities are formed between the indicated portions of the housing, and at least one cavity is formed between the closest portion of the housing to the upper portion of the tank for the softening agent and the upper portion of the tank for the softening agent. The technical result consists in increasing the reliability and simplifying the design of a device for purifying a liquid, and in decreasing the weight of the device for purifying a liquid.

Methods and systems for acid regeneration of ion exchange resins are disclosed. Acid resins designed for use in a variety of cleaning application using a water source use a treated, softened, acidic water source according to the invention. Various methods of using the softened acidic water generated by acid regenerate-able ion exchange resins are disclosed to beneficially reduce spotting, filming and scale buildup on treated surfaces, reduce and/or eliminate the need for polymers, threshold reagents and/or rinse aids, and using protons generated in the acidic water effluent for triggering events useful in various cleaning applications.

Methods and systems for acid regeneration of ion exchange resins are disclosed. Acid resins designed for use in a variety of cleaning application using a water source use a treated, softened, acidic water source according to the invention. Various methods of using the softened acidic water generated by acid regenerate-able ion exchange resins are disclosed to beneficially reduce spotting, filming and scale buildup on treated surfaces, reduce and/or eliminate the need for polymers, threshold reagents and/or rinse aids, and using protons generated in the acidic water effluent for triggering events useful in various cleaning applications.

A system for nitrate removal from water combining: an ion exchange unit comprising at least one column of an ion exchange resin, a brine bioregeneration circuit comprising a sequential batch reactor (SBR), and an ozonation unit, is disclosed. A method for nitrate removal from water is further disclosed.

A system for nitrate removal from water combining: an ion exchange unit comprising at least one column of an ion exchange resin, a brine bioregeneration circuit comprising a sequential batch reactor (SBR), and an ozonation unit, is disclosed. A method for nitrate removal from water is further disclosed.