BioWin is a Microsoft Windows-based simulator used world-wide in the analysis and design of wastewater treatment plants. The figure below shows an example of a nutrient removal system configuration set up in BioWin. Many different process units can be included to "build" a specific treatment plant configuration. BioWin offers a number of features to aid in creating attractive, professional reports, and includes its own internal Notes editor to help keep track of project details. It is very easy to get results from BioWin into a word processor or spreadsheet. Charts, tables, system configuration layouts, etc. can be copied and pasted from BioWin to reports. Tables can be exported as tabbed text and then quickly converted to tables.

Support site:
https://envirosim.com/upgrade-history/upgrading-to-biowin-5-3