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On-demand intermittent high purity water production system

A high-purity water and water treatment system technology, which is applied in non-polluting water treatment, water/sewage treatment, water treatment parameter control, etc., and can solve problems such as the deterioration of high-purity water quality

Inactive Publication Date: 2011-09-28
EVOQUA WATER TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These studies found that increased storage time deteriorated the quality of high-purity water

Method used

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  • On-demand intermittent high purity water production system
  • On-demand intermittent high purity water production system

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Embodiment Construction

[0020] The system described here allows users of high-purity water batch production plants to obtain fresh high-purity water on demand. Fresh means that the water is produced substantially at the same time as it is needed. The system includes a reverse osmosis membrane component fluidly connected to a storage tank to hold RO treated water. The storage tank is fluidly connected to the continuous electrodeionization unit. Depending on the feed water characteristics and user needs, other components may also be used to pre-treat the RO feed water or to further treat the permeate before or during storage.

[0021] Fluidly connected means that the liquid of a process step or equipment element is transferred to another step or equipment element. This can be accomplished through piping and any associated valves and control equipment, or can be done in a semi-batch mode, where fluid after a processing step is held in a tank or other reservoir until pumped or otherwise transferred to ...

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Abstract

An on-demand system for intermittent high purity water production which by locating a storage tank (10) for pre-polished water just prior to a final high purity polishing device reduces the potential for stagnant water in the system to reduce or degrade product high purity water quality and reduces the actual degradation of high purity water quality. Pre-polished water is preferably produced by reverse osmosis (2). Final polished water is produced by continuous electrodeionization (13).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY CLAIMS [0002] This invention is required under 35 USC §119(e) filed on October 31, 2008 entitled "USE AND PLACEMENT OF A STORAGE TANK FOR INSTANT PRODUCTION OF PURIFIED WATER" )”, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to a high-purity water production system, and more particularly to a system and process for producing high-purity water such that the purified water is supplied to users on demand while the system is flushed to remove water that may be in storage or during downtime. pollutants formed in the process. Background technique [0004] Highly purified water is required in many industrial and laboratory applications. Some such applications are described in "Ultrapure Water by Membranes" Chapter 13 of "Advanced Membranes Technology and Applications" by Norman Li et al., John Wiley & Sons, NJ. )" is visible. The semiconductor, phar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44C02F1/469B01D61/58
CPCB01D2311/06C02F1/469B01D61/58B01D61/12B01D61/48C02F2209/003C02F2209/03C02F1/441C02F2103/04B01D61/025C02F2209/05C02F1/4695B01D2311/243
Inventor J.特莱普恰克梁荔乡
Owner EVOQUA WATER TECH LLC