News

A BioWin 6.2 patch was released today, taking the full version to 6.2.7.3043. The patch updates several default model and element parameters with respect to the Membrane Aerated Bioreactor (MABR) unit and improves the modeling of short-circuiting that may occur when continuously-fed sequencing batch reactors (SBR) are in settling mode. This 7-page document details the new developments

The EnviroSim team is pleased to announce the release of BioWin 6.2. A more comprehensive description of the upgrade may be found in the “What’s New in BioWin 6.2” document in printable format. BioWin 6.2 includes a new element to model Membrane Aerated Bioreactors. This technology is gaining acceptance worldwide as an effective wastewater treatment

Download BioWin 6.1 The EnviroSim team is pleased to announce the release of BioWin 6.1. A comprehensive description of the upgrade may be found in the “What’s New in BioWin 6.1” document in printable or presentation format. BioWin 6.1 Upgrade Highlights : Separate Hydrolysis Rate for External Organics Additional State Variables in SSO Sulfur in

The Version 6.0.26.1966 patch released on Jan 21, 2020, fixes the following minor issues: a typo in the text clarifying the stoichiometry required to simulate ACH with the alum metal input a minor issue with the pH displayed for an alum input used to simulate ACH an issue with opening old Influent Specifier files a

Today we have released a patch for BioWin 6 that will update to version 6.0.24.1932. This patch incorporates changes in the following areas of BioWin 6: Parameter changes impacting chemical phosphorus removal using ferric salts The new integrated Influent Specifier A brief outline of the changes is given in the following sections. For more information,

The Version 6.0.23.1859 patch released on Sept 13, 2019, fixes the following minor issues: plug flow channel element was not showing the last saved G value after loading a file conversion issue with variable ferrous input minor stoichiometry fixes, e.g. calcium release on decay of sulfur organisms and synthesis phosphorus use for anoxic growth on

The patch released today (BioWin 6.0.22.1827) addresses the following issues : an issue with the plug flow channel element volume calculation an issue with the P fractions displayed in the View Results section of the Influent Specifier an issue with exported album charts in Excel Reports having duplicate series names an issue where the velocity

The EnviroSim team is pleased to announce the release of BioWin 6.0. New features in BioWin 6.0 can be divided into two main areas : Model Additions and Usability Upgrades. A more comprehensive description of the upgrade may be found in the “What’s New in BioWin 6.0” document in printable or presentation format. BioWin 6.0

The patch released today (BioWin 5.3.0.1214) addresses the following issues : Fixed an issue where custom air supply groups (used in energy cost calculations) were not saved. Improved speed of simulation when controlling air flow via the BW Controller. Updated cabinet configurations: IFAS Simplified and IFAS Detailed. You can update using the automatic updater or

The patch released today (BioWin 5.3.0.1213) addresses the following issues : Fixed an issue for files created in older versions of BioWin where an airflow constraint specified in a media bioreactor’s Operation tab may not be obeyed. Updated cabinet configurations: MLE Process, 3 Stage Phoredox, and 3 Stage Phoredox with Primary Fermenter. You can update

The patch released today (BioWin 5.3.0.1212) addresses the following issues : Improved seeding in PST element. Minor fix to buttons that reset diffuser parameters to default values. Fix error when pasting the clipboard to a state variable vector in various dialogs. Change in SOTE calculation when media occupies a very large percent of total volume.

The patch released today (BioWin 5.3.0.1211) addresses the following issues : Steady state tables in the Album only update during simulation when “Steady state simulation table updates” is checked in Customize. Spanish, Japanese, and Chinese language support added. Updated several BW Controller examples to simulate quicker. You can update using the automatic updater or by downloading the

The patch released today (BioWin 5.3.0.1210) addresses the following issues : Increased precision for switching interval in Flow Router specification. Maximum/minimum air flow rate can be set in GSST element. You can update using the automatic updater or by downloading the latest version here : BioWin Update

The patch released today (BioWin 5.3.0.1209) addresses the following issues : The default values on the GSST Granules tab for granule settled volume and voidage have been modified slightly. When a new GSST element is added to the drawing board, it uses the global default parameters as the basis for its local parameters rather than

The EnviroSim team is pleased to announce the release of BioWin 5.3. BioWin 5.3 contains a new Granular Sludge Sequencing Tank element to model this process, which is gaining acceptance worldwide as an effective wastewater treatment technology. BioWin 5.3 also contains an enhancement to the trickling filter element and refinements to model parameters. A more

The patches released today (BioWin 5.2.0.1163 and PetWin 5.2.0.606) address the following issues : Percent capture of ISS in Grit tank element correctly updates on exiting dialog. Adjusted scaling of two-sided hydraulic loading factor switch in Trickling filter element. Improved accounting of power used by Brush/Surface aerator elements in total power calculation. Adjusted parameter used

The patch released today (BioWin 5.2.0.1162) fixes an issue related to volume limits in equalization tank elements, and improves DO / airflow modeling in trickling filter elements. You can update using the automatic updater or by downloading the latest version here : BioWin Update

The patch released today (BioWin 5.2.0.1159) fixes an error when editing old style PST elements, and fixes incorrect units for volumetric cost in sludge element. You can update using BioWin’s automatic updater or by downloading the latest version here. You can update using the automatic updater or by downloading the latest version here : BioWin Update    

A small issue where a portion of the Operation tab of the Ideal Primary Settling Tank was not displaying properly has been fixed by a patch released today (BioWin 5.2.0.1157). You can update using the automatic updater or by downloading the latest version here : BioWin Update

The EnviroSim team is pleased to announce the release of BioWin 5.2. BioWin 5.2 contains many exciting new updates that build upon the energy and operating cost features first introduced in BioWin 5.0, further expanding its capability as a plant management tool, and for comparing design alternatives.A more comprehensive description of the upgrade may be found in a What’s

A few days ago, Microsoft released a patch that seems to be causing graphics issues for some users. The graphical issues may manifest as “black bands” that appear when you click on white space in BioWin’s drawing board as shown in the screen capture below. We are investigating this, but at the moment the required

BioWin 5.1 was released in early October. The main feature of the new version is the game-changing speed improvement, for both steady state and dynamic simulations. We’ve had great feedback from many users. Soon after the release of BioWin 5.1 we issued a patch.  That was mainly to correct an interaction between BioWin and the

EnviroSim Associates is pleased to announce the release of BioWin 5.1. Building on the successful history of the BioWin line, BioWin 5.1 continues to provide rigorous mathematical models for wastewater treatment plant process simulation. The primary focus of this release has been to improve both steady state and dynamic simulation speed, particularly for (a) large

Please note that a patch for BioWin 4.1 has been recently released. The current release version of BioWin 4.1 is 4.1.1.1054. You can download that here. Also please note that BioWin 5.0 was released in February 2016. If you wish to upgrade BioWin 4.1 to BioWin 5.0, you may do that here.  

A BioWin 5 patch was recently released – all of our users who are unable to use BioWin’s auto-update feature should visit www.envirosim.com/upgrading-to-biowin-50 to download. The most recent version of BioWin is 5.0.0.1110, which you can check in BioWin by selecting Help > About…