What is BioWin wastewater modeling software used for?

Updated

BioWin is a wastewater treatment process simulator developed by EnviroSim Associates Ltd. It is used to design, upgrade, and optimize municipal and industrial wastewater treatment plants. The software ties together biological, chemical, and physical process models so that engineers and utilities can evaluate how a treatment process will behave before committing to a design or operational change.

What BioWin simulates

BioWin's core is a proprietary biological model owned, developed, and supported exclusively by EnviroSim. That core is supplemented by other process models, including:

  • Water chemistry models for calculating pH and precipitation reactions
  • Mass transfer models for oxygen modeling and other gas-liquid interactions

Because these models are integrated rather than handled separately, a single simulation can reflect how biological activity, chemistry, and physical transfer interact within a treatment process.

Who uses it and for what

EnviroSim states that BioWin is used worldwide by consulting engineering companies and utilities. Typical applications include:

Task What BioWin contributes
Design Evaluating process configurations before construction
Upgrade Assessing changes to an existing plant's capacity or performance
Optimization Testing operational adjustments against modeled outcomes

The company's staff also work on treatment plant process problems, performance optimization, and process design, and they support clients through training seminars, software support, and involvement in project teams where BioWin is applied.

About EnviroSim

EnviroSim Associates Ltd. was incorporated in 1990. Its offices and laboratory are located in the Hamilton Technology Centre in Flamborough, Ontario, Canada. The company develops and supports wastewater treatment plant simulation software, with BioWin as its flagship product. Current and prospective users can get BioWin or update an existing version; the site lists version 6.5.4.5173, updated 7.28.2026. License renewal and invoice payment are handled through the site's account and shop pages.

When BioWin is a reasonable fit

BioWin is aimed at professionals who need to model treatment plant processes rather than at casual or educational users. It is most relevant if you are:

  • A consulting engineer designing or reviewing a municipal or industrial treatment plant
  • A utility evaluating an upgrade or optimizing an existing plant
  • Working on a project where biological, chemical, and physical process interactions need to be considered together

If your task is limited to a single unit process or a rough sizing calculation, a full process simulator may be more than you need. If your task involves predicting effluent quality, pH, precipitation, or oxygen transfer under changing conditions, BioWin's integrated model set is the reason to use it.