Two web‐based applications (WBAs) relevant to drinking water practice are presented to simulate (1) inorganic chloramine formation and stability, including an example inorganic chloramine demand reaction for organic matter, and (2) breakpoint curves. The model underlying both WBAs is a well‐established inorganic chloramine formation‐and‐decay model. The WBAs were developed to be freely accessible over the Internet as web pages (https://usepaord.shinyapps.io/Unified-Combo/ and https://usepaord.shinyapps.io/Breakpoint-Curve/), providing drinking water practitioners (e.g., operators, regulators, engineers, professors, students) with learning tools to explore inorganic chloramine chemistry in an interactive manner without requiring proprietary software or user modeling expertise. The WBAs allow the user to specify two side‐by‐side simulations, providing a direct comparison of impacts associated with changing simulation conditions (e.g., free chlorine, free ammonia, and total organic carbon concentrations; pH; total alkalinity; and temperature). Once completed, the user may download simulation data to use offline. The WBAs’ implementation, validation, and example simulations are described.

中文翻译：

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基于Web的应用程序，用于模拟饮用水中无机氯胺的化学反应。

提出了两个与饮用水实践相关的基于Web的应用程序（WBA），以模拟（1）无机氯胺的形成和稳定性，包括有机物无机氯胺需求反应的示例，以及（2）断点曲线。两个WBA的基础模型都是公认的无机氯胺形成和衰减模型。WBA已开发为可通过互联网作为网页免费访问（https://usepaord.shinyapps.io/Unified-Combo/和https://usepaord.shinyapps.io/Breakpoint-Curve/），为饮用水从业者提供服务（例如，运营商，监管机构，工程师，教授，学生）使用学习工具，以交互方式探索无机氯胺化学，而无需专有软件或用户建模专家。WBA允许用户指定两个并行仿真，提供与变化的模拟条件（例如，游离氯，游离氨和总有机碳浓度，pH，总碱度和温度）相关的影响的直接比较。完成后，用户可以下载仿真数据以脱机使用。描述了WBA的实现，验证和示例仿真。