EnviroSim BioWin 2025 v6.4.2: Advanced Software for Wastewater Process Modeling

EnviroSim BioWin 2025 v6.4.2 is the industry-leading software for simulating, optimizing, and designing municipal and industrial wastewater treatment plants. It uses a comprehensive and rigorously calibrated model to predict the complex interactions of biological, chemical, and physical processes in a treatment facility.

Core Philosophy: The Plant-Wide Digital Twin

BioWin goes beyond simple biological modeling to create a dynamic digital twin of an entire wastewater treatment plant. This allows engineers and operators to test scenarios, troubleshoot problems, and optimize performance without interrupting the actual plant or building costly pilot systems.

Key Features & Capabilities in v6.4.2

As a point release (v6.4.2), this version focuses on refinements and bug fixes, building upon the significant features of the BioWin 6 platform.

1. Comprehensive Model Library

  • Advanced Biological Processes: Models a wide range of configurations for biological nutrient removal (BNR), including enhanced biological phosphorus removal (EBPR), nitrification, denitrification, and simultaneous nitrification-denitrification (SNdN).

  • Chemical & Physical Unit Processes: Integrates chemical phosphorus removal, primary clarification, secondary settling (using advanced models like the double-exponential function), thickening, anaerobic digestion, dewatering, and more.

  • Gas Handling & Energy Balance: Tracks biogas production (CO2, CH4) from digesters and calculates comprehensive plant-wide energy balances, crucial for optimizing energy efficiency and reducing carbon footprint.

2. Calibration & Data Analysis Tools

  • Parameter Estimation Tool (PET): A powerful feature that automatically calibrates the model by adjusting key kinetic and stoichiometric parameters to best fit a set of plant operating data, significantly reducing calibration time and improving model accuracy.

  • Dynamic Influent Profiler: Allows for the creation of realistic, time-varying influent files that reflect diurnal and seasonal variations in flow and load.

3. Scenario Management & Optimization

  • “What-If” Analysis: Test the impact of changes in operational setpoints (e.g., DO targets, internal recycle rates, chemical doses), influent characteristics, or even plant configuration.

  • Design & Debottlenecking: Use the model to size new tanks, identify capacity constraints in existing facilities, and evaluate different upgrade options.

  • Stormwater & Wet Weather Modeling: Simulate the impact of high-flow events on plant performance and assess control strategies.

4. User Experience & Integration

  • Intuitive Flowchart Interface: Build plant models by dragging and dropping unit processes onto a worksheet and connecting them with streams.

  • Powerful Graphing & Reporting: Customizable graphs and detailed output reports for analyzing and presenting simulation results.

  • Data Import/Export: Easily import data from spreadsheets and export results for further analysis.