Web-based applications to simulate drinking water inorganic chloramine chemistry

Area of Science:

• Environmental Chemistry
• Water Treatment Technologies
• Computational Chemistry

Background:

• Inorganic chloramine is a key disinfectant in drinking water treatment.
• Understanding chloramine formation, stability, and decay is crucial for effective water quality management.
• Existing tools for simulating chloramine chemistry can be complex or proprietary.

Purpose of the Study:

• To present two freely accessible web-based applications (WBAs) for simulating inorganic chloramine chemistry.
• To provide interactive learning tools for drinking water practitioners.
• To enable exploration of chloramine formation, stability, and breakpoint curve dynamics.

Main Methods:

• Development of two WBAs based on a validated inorganic chloramine formation and decay model.
• Implementation of interactive simulation parameters including disinfectant residuals, organic matter, pH, and temperature.
• Facilitation of side-by-side simulation comparisons and data download functionality.

Main Results:

• Successful creation of WBAs for simulating inorganic chloramine formation/stability and breakpoint curves.
• WBAs allow users to explore the impact of various water quality parameters on chloramine chemistry.
• Interactive simulations are accessible via web pages without requiring specialized software.

Conclusions:

• The developed WBAs serve as valuable, free educational resources for drinking water professionals.
• These tools enhance understanding and practical application of inorganic chloramine chemistry in water treatment.
• Interactive simulation promotes informed decision-making in water quality management.