System and method of deionization of water

Patent metadata

Field	Value
Publication number	US-11447404-B2
Application number	US-202016821445-A
Country	US
Kind code	B2
Filing date	Mar 17, 2020
Priority date	Aug 8, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.

First claim

What is claimed is:

1. A system for providing treated water, the system comprising a first water treatment unit disposed at a first site, having:
a first ion exchange bed having ion exchange media contained therein, and disposed to receive a first water stream to be treated;
a first flow meter positioned along a first flow path including the first ion exchange bed and configured to measure a first flow rate of the first water stream passing through the first flow path; and
a first controller configured to receive first flow rate data and transmit the first flow rate data to a central server, the central server configured to apply a first weighting factor to the first flow rate data and determine a remaining capacity of the ion exchange media in the first ion exchange bed based on the applied first weighting factor to the first flow rate data and a current capacity of the first ion exchange bed.

2. The system of claim 1 , further comprising a second water treatment unit disposed at a second site remotely from the first water treatment unit, the second water treatment unit having:
a second ion exchange bed having ion exchange media contained therein, and disposed to receive a second water stream to be treated;
a second flow meter positioned along a second flow path including the second ion exchange bed and configured to measure a second flow rate of the second water stream passing through the second flow path; and
a second controller configured to receive second flow rate data and transmit the second flow rate data to the central server.

3. The system of claim 2 , wherein the central server configured to apply a second weighting factor to the second flow rate data and determine a remaining capacity of the ion exchange media in the second ion exchange bed based on the applied second weighting factor to the second flow rate data and a current capacity of the second ion exchange bed.

4. The system of claim 3 , wherein the central server is further configured to determine an estimated number of days remaining to exhaustion of the ion exchange media in the second ion exchange bed.

5. The system of claim 4 , wherein the central server is further configured to provide a recommendation to replace the first ion exchange bed and the second ion exchange bed in a same service trip.

6. The system of claim 5 , wherein the central server is configured to provide the recommendation of replacing the first ion exchange bed and the second ion exchange bed in the same service trip based on weighing a cost associated with regenerating the ion exchange media of the first ion exchange bed and the ion exchange media of the second ion exchange bed against a cost associated with different service trips to each of the first and the second sites.

7. The system of claim 6 , wherein each of the water treatment units further comprises at least one conductivity sensor disposed to respectively measure a conductivity of water introduced into the ion exchange media of each respective water treatment unit, and wherein the central server is further configured to receive conductivity data from the at least one conductivity sensor and determine a predicted days to exhaustion of the ion exchange media in respective water treatment units based on respective conductivity data.

8. The system of claim 7 , wherein the central server is configured to generate a service request to replace ion exchange media in a particular water treatment unit if the predicted days to exhaustion of the particular water treatment unit is less than a service lag time.

9. The system of claim 8 , wherein the central server is configured to generate the service request to replace the ion exchange media in the particular water treatment unit if the remaining capacity of the particular water treatment unit is less than a minimum capacity.

10. The system of claim 9 , wherein the central server is further configured to combine at least two service requests from at least two different water treatment units into an aggregated service request to replace respective ion exchange media of the at least two water treatment units if a separation distance between the at least two water treatment units is less than a maximum separation distance.

Assignees

• Evoqua Water Technolgies Llc
• Evoqua Water Tech Llc

Inventors

• Hoefferle Erich G
• Rozario Isabel
• Mildner Stephen

Classifications

• B01J49/85

  Controlling or regulating devices therefor · CPC title

• C02F2209/03

  Pressure · CPC title

• C02F2103/32

  from the food or foodstuff industry, e.g. brewery waste waters · CPC title

• C02F2209/008

  comprising telecommunication features, e.g. modems or antennas · CPC title

• C02F2209/06

  pH · CPC title