公开(公告)号：US20250044273A1

公开(公告)日：2025-02-06

申请号：US18784203

申请日：2024-07-25

Applicant: ECOLAB USA Inc.

Inventor： Ning JIN ,  Seong Hoon YOON ,  Harshada Ramesh LOHOKARE

IPC: G01N33/18 ,  C02F1/76

Abstract: The present disclosure provides methods of monitoring and controlling biocides in an aqueous medium, methods of manufacturing the compositions, and various oxidizing biocide compositions suitable for use in aqueous medium treatment processes. Methods include adding a first oxidizing biocide at a first injection point upstream of a reverse osmosis (RO) membrane inlet, adding a second oxidizing biocide at a second injection point upstream of the RO membrane inlet, obtaining a first sample of the aqueous medium from a first location downstream of the first and second injection points and upstream of the RO membrane inlet, and obtaining a second sample of the aqueous medium from a second location downstream of the first location but immediately upstream of the RO membrane. Methods may also include measuring free residual oxidant concentration, total residual oxidant concentration, and oxidation-reduction potential of the first and second samples and adjusting biocide addition based on the measurements.