EP 3137424 A4 20180718 - WATER INTEGRITY AND APPARATUS FOR MEASURING HYDROGEN PEROXIDE IN WATER TREATMENT AND DISTRIBUTION SYSTEMS
Title (en)
WATER INTEGRITY AND APPARATUS FOR MEASURING HYDROGEN PEROXIDE IN WATER TREATMENT AND DISTRIBUTION SYSTEMS
Title (de)
WASSERINTEGRITÄT UND VORRICHTUNG ZUR MESSUNG VON WASSERSTOFFPEROXID IN WASSERAUFBEREITUNGS- UND VERTEILUNGSSYSTEMEN
Title (fr)
INTÉGRITÉ DE L'EAU ET DISPOSITIF POUR MESURER LE PEROXYDE D'HYDROGÈNE DANS DES SYSTÈMES DE TRAITEMENT ET DE DISTRIBUTION DE L'EAU
Publication
Application
Priority
- CA 2835012 A 20131129
- US 201314094754 A 20131202
- US 201462001204 P 20140521
- US 201414292593 A 20140530
- CA 2014000503 W 20140613
Abstract (en)
[origin: WO2015077863A1] As a measure of water integrity in water treatment and distribution systems, stabilized hydrogen peroxide is used as the secondary disinfectant. The concentration of hydrogen peroxide is monitored throughout the system and, if needed, additional hydrogen peroxide is injected into the system to maintain the level at established standard. An apparatus and method for measuring hydrogen peroxide concentration in water to an accuracy of 0.1 mg/L within water treatment and distribution systems comprises a colorimetric assay method to determine hydrogen peroxide concentration. The assay is monitored spectophotometrically at a desired wavelength. Each sample is corrected relative to a control sample and hydrogen peroxide concentration determined with respect to a standard curve.
IPC 8 full level
A61L 2/28 (2006.01); C02F 1/00 (2006.01); C02F 1/32 (2006.01); G01N 21/33 (2006.01); G01N 21/78 (2006.01); G01N 31/22 (2006.01); G01N 33/18 (2006.01)
CPC (source: EP)
C02F 1/008 (2013.01); C02F 1/325 (2013.01); C02F 1/686 (2013.01); C02F 1/722 (2013.01); G01N 21/78 (2013.01); G01N 31/22 (2013.01); G01N 33/18 (2013.01); C02F 2209/005 (2013.01)
Citation (search report)
- [Y] US 6245224 B1 20010612 - ENOKI HIDEO [JP], et al
- [Y] US 2004006513 A1 20040108 - WOLFE THOMAS D [US]
- [Y] US 2010204924 A1 20100812 - WOLFE THOMAS D [US], et al
- [Y] EP 2511240 A1 20121017 - SIEMENS AG [DE]
- [Y] WO 2004083168 A1 20040930 - DOJINDO LAB [JP], et al
- [Y] JP H1096720 A 19980414 - MITSUBISHI GAS CHEMICAL CO
- [Y] US 5474938 A 19951212 - JADESJOE GUNILLA [SE], et al
- [A] US 2002104787 A1 20020808 - MURAYAMA SEIICHI [JP], et al
- See references of WO 2015077863A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015077863 A1 20150604; CA 2932022 A1 20150604; EP 3137424 A1 20170308; EP 3137424 A4 20180718
DOCDB simple family (application)
CA 2014000503 W 20140613; CA 2932022 A 20140613; EP 14866451 A 20140613