Filter life determination

Patent metadata

Field	Value
Publication number	US-11612840-B2
Application number	US-202017108629-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Dec 1, 2020
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

An embodiment provides a method for determining a filter life, including: introducing an aqueous sample into a filtration device comprising at least one filter and one or more sensors located upstream of the at least one filter, wherein the one or more sensors are capable of measuring a component of the aqueous sample; measuring the component of the aqueous sample using the one or more sensors; identifying a load on the at least one filter based upon the measuring of the component of the aqueous sample and at least one filtration characteristic; and determining the filter life of the at least one filter based upon the identifying. Other aspects are described and claimed.

First claim

What is claimed is:

1. A method for determining a filter life, comprising:
introducing an aqueous sample and a thiocarbamate-based indicator into a filtration device comprising at least one filter and one or more sensors located upstream of the at least one filter, wherein the one or more sensors are capable of measuring a component of the aqueous sample;
measuring the component of the aqueous sample using the one or more sensors, wherein the one or more sensors comprises a fluorometric sensor, wherein the fluorometric sensor measures a fluorescence intensity of the aqueous sample flowing through the at least one filter;
identifying a load on the at least one filter based upon the measuring of the component of the aqueous sample and at least one filtration characteristic, wherein the load is correlated to the fluorescence intensity; and
determining the filter life of the at least one filter based upon the identifying the load.

2. The method of claim 1 , wherein the component comprises chlorine.

3. The method of claim 1 , wherein the measured component correlates to a concentration of the component in the aqueous sample.

4. The method of claim 1 , wherein the measured component correlates to degradation of the at least one filter.

5. The method of claim 1 , wherein the determining the filter life further comprises a known projected life of the at least one filter.

6. The method of claim 1 , wherein the at least one filtration characteristic comprises a period of time, wherein the period of time corresponds to a time the at least one filter is in use.

7. The method of claim 1 , wherein the at least one filtration characteristic comprises a cumulative counter, wherein the cumulative counter corresponds to a total amount of the component passed through the at least one filter.

8. The method of claim 1 , wherein the determining the filter life further comprising assigning a confidence score to the filter life.

9. The method of claim 1 , further comprising the determining the filter life based upon a user selected time range of the at least one filter.

10. The method of claim 1 , wherein the aqueous sample comprises feed water of an industrial process.

Assignees

• Hach Co

Inventors

• Dervaes Nelson E
• Leone Lynn Ruth

Classifications

• G01N15/08 Primary

  Investigating permeability, pore-volume, or surface area of porous materials · CPC title

• B01D35/143 Primary

  Filter condition indicators · CPC title

• B01D2201/54

  Computerised or programmable systems · CPC title

• C02F2101/12

  Halogens or halogen-containing compounds · CPC title

• C02F1/001

  Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00) · CPC title