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Description: Measuring Total Residual Oxidants
Measuring Total Residual Oxidants
Measuring total residual oxidants (TROs) in effluent water is an important regulatory requirement for many industries, including power, manufacturing, food, and marine enterprises operating cooling water and wastewater management systems. Many of these systems require the use of chlorine- and bromine-based biocides to control biological growth in pipes, tanks, and other water management infrastructure. However, without careful monitoring and effective treatment to reduce TRO concentrations, using oxygen-scavenger biocides can cause serious harm to aquatic wildlife if released into the environment.
Author(s)
Andrew Yanjiao Xie
SourceArticle of WE&T Magazine
Project IDWET40
SubjectLaboratory; Innovation; Regulations
Document typeMagazine article
PublisherWater Environment Federation
Print publication date Nov 2019
Volume / Issue31 / 11
Content sourceWE&T Magazine
First / last page(s)32 - 35
Copyright2019
Word count1,496
Subject keywordstotal residual oxidantsmeasuring TRONational Pollutant Discharge Elimination SystemNPDESchlorine levelsion selective technology

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Description: Measuring Total Residual Oxidants
TRO Monitoring Challenges
Measuring Total Residual Oxidants
The most widely used techniques for measuring TRO levels in wastewater are colorimetric and amperometric methods. Colorimetric techniques involve measuring the color change associated with the reaction between oxidants and reagents, such as N,N-diethyl-1,4-phenylenediamine sulfate (DPD), to analyze residual chlorine and other chlorine-based oxidants. Amperometric methods such as chlorine sensors,...
PublisherWater Environment Federation
Copyright2019
Word count354
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Description: Measuring Total Residual Oxidants
Ion Selective Electrode Technology
Measuring Total Residual Oxidants
Ongoing advances in electrochemistry and improvements in instrument design are helping wastewater operators to monitor the landscape and meet their relevant regulatory requirements with the next generation of TRO analyzers.
PublisherWater Environment Federation
Copyright2019
Word count156
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Description: Measuring Total Residual Oxidants
Case Study: Measuring Total Chlorine
Measuring Total Residual Oxidants
ISE-based TRO analyzers have proven to deliver robust and reliable measurement data for a range of industrial wastewater management applications, including power facility water cooling systems. A recent study at a power facility in the Southeastern U.S. compared various methods for monitoring total chlorine levels in discharged cooling water treated with sodium hypochlorite.
PublisherWater Environment Federation
Copyright2019
Word count407
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Description: Measuring Total Residual Oxidants
Maintenance Needs
Measuring Total Residual Oxidants
While TRO measurement accuracy is a key concern within wastewater management applications, cost-efficiency is another important factor for operators. Fortunately, improvements in the reliability and ease of maintaining the latest ISE systems are greatly reducing the operational costs associated with regulatory compliant wastewater management. The use of automated solutions that deliver on-demand...
PublisherWater Environment Federation
Copyright2019
Word count368
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Measuring Total Residual Oxidants