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Water treatment system and method

a technology of water treatment system and fluid, applied in the direction of multi-stage water/sewage treatment, separation process, filtration separation, etc., can solve the problem that water containing hardness species such as calcium and magnesium may be undesirable for some industrial uses

Inactive Publication Date: 2005-05-19
SIEMENS WATER TECH HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a water purification system that includes a pressurized reservoir system, a water treatment device, a water distribution system, and at least one point of use. The system can remove undesirable species from water using an electrochemical device, and the treated water can be distributed to the point of use. The invention also includes a method for treating water by introducing water to a pressurized reservoir system, transferring a portion of the water to an electrochemical device, and distributing the treated water to a point of use. The invention can be used in a household or in a larger water treatment system."

Problems solved by technology

Water that contains hardness species such as calcium and magnesium may be undesirable for some uses in industrial, commercial and household applications.

Method used

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  • Water treatment system and method

Examples

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example 1

[0062] An in-line pressurized water treatment system in accordance with one or more embodiments of the systems and techniques of the present invention, schematically shown in FIG. 3, was evaluated for performance. The water treatment system 10 had an electrodeionization module 16 with a pretreatment system (not shown) and a pressurized storage vessel 12. Water, from point of entry 14, was introduced into pressurized vessel 12 and was circulated through electrodeionization module 16. The water treatment system was controlled by a programmable controller (not shown) based on a measured water conductivity, as measured by sensors 20b and 20c, upstream of an inlet 62 and downstream of an outlet 64 of pressurized vessel 12.

[0063] Electrodeionization device 16 comprised of a 10-cell pair stack with 13-inch flowpaths. Each cell was filled with about 40% AMBERLITE® SF 120 resin and about 60% AMBERLITE® IRA 458 resin, both available from Rohm & Haas Company, Philadelphia, Pa. The electrodeio...

example 2

[0070] An in-line pressurized water treatment system in accordance with one or more embodiments of the present invention, schematically shown in FIG. 5, was evaluated for performance. The water treatment system 10 had an electrodeionization module 16 and a pressurized storage vessel 12. Water, from point of entry 14, was introduced into pressurized storage vessel 12 through inlet 62 and was circulated using pumps 30a and 30b and treated through pretreatment units 28a and 28b and electrodeionization module 16. The water treatment system was controlled by a programmable controller (not shown) based on the measured water conductivity, as measured by sensors any of 20a, 20b, and 20c.

[0071] Electrodeionization device 16 comprised of a 10-cell pair stack with flowpaths that were about 7.5 inches long and about 2.5 inches wide. Each cell was filled with about 40% AMBERLITE® SF 120 resin and about 60% AMBERLITE® IRA 458 resin, both available from Rohm & Haas Company, Philadelphia, Pa. The ...

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Abstract

A water treatment system provides treated water to a point of use by removing at least a portion of any hardness-causing species contained in water from a water source, such as municipal water, well water, brackish water and water containing foulants. The water treatment system typically receives water from the water source or a point of entry and purifies the water containing at least some undesirable species before delivering the treated water to a point of use. The water treatment system has a pressurized reservoir system in line with an electrochemical device such as an electrodeionization device. The water treatment system can have a controller for adjusting or regulating at least one operating parameter of the treatment system or a component of the water treatment system.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates generally to a system and method of treating or purifying a fluid and, more particularly, to a water treatment system incorporating an electrochemical device with a reservoir system for delivering treated water to a point of use. [0003] 2. Description of Related Art [0004] Water that contains hardness species such as calcium and magnesium may be undesirable for some uses in industrial, commercial and household applications. The typical guidelines for a classification of water hardness are: zero to 60 milligrams per liter (mg / l) as calcium carbonate is classified as soft; 61 to 120 mg / l as moderately hard; 121 to 180 mg / l as hard; and more than 180 mg / l as very hard. [0005] Hard water can be treated by removing the hardness ion species. Examples of systems that remove such species include those that use ion exchange beds. In such systems, the hardness ions become ionically bound to oppos...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01D61/48C02F1/00C02F1/28C02F1/44C02F1/46C02F5/00
CPCB01D61/48C02F1/283C02F1/441C02F1/46C02F5/00C02F2209/00C02F2301/066C02F2209/02C02F2209/03C02F2209/05C02F2209/06C02F2209/11C02F2209/40C02F2209/006
Inventor JHA, ANIL D.WILKINS, FREDERICKFREYDINA, EVGENIYASEZGI, AYTACMADHUSUDAN, RESHMAREARDON, MICHAEL
Owner SIEMENS WATER TECH HLDG CORP
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