Water and Wastewater Disinfection
Course Pack: Specialized Chemistry & Field Monitoring
Langelier Index & Nitrification
Course Description
This advanced module explores the Langelier Index and its role in evaluating water stability, corrosion potential, and overall water quality in drinking water systems. Learners will gain a deeper understanding of how temperature changes influence the Langelier Index, water chemistry balance, and system performance.
The course covers temperature-related impacts on the Langelier Saturation Index, along with jar testing procedures, colorimetric testing accuracy, and biological activity that can affect water treatment operations. Participants will learn how to assess stability changes, apply temperature-aware testing techniques, and evaluate factors that contribute to nitrification risks and corrosion control. Through practical examples and real-world scenarios, operators will develop the skills needed to use the Langelier Index as a tool for maintaining system stability, protecting infrastructure, and improving drinking water quality.
Learning Objectives
1) Interpret temperature impacts on Langelier Index
2) Understand nitrification sensitivity to temperature
3) Apply temperature control in jar and field testing
4) Explain colorimetric temperature dependencies
5) Assess biological responses to temperature shifts
Agenda
1) Fundamentals of the Langelier Index and its application to water stability
2) Temperature influences on water‑supply characteristics and treatment outcomes
3) Jar testing procedures with emphasis on temperature control and consistency
4) Field and colorimetric testing considerations related to temperature effects
5) Temperature impacts on nitrification/biological activity and applied case interpretations
Target audience
Operator 3-level personnel responsible for corrosion control, biological stability assessment, and temperature-sensitive monitoring programs.
Level
III
Learning material and method
Online on-demand
Assessment
Knowledge check and quiz (80% correct and above)
Instructor
Mike Harrington