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EnviroSim is pleased to announce the addition of one-day specialty courses to its training portfolio.
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WE HAVE MOVED! EnviroSim is pleased to announce its relocation to new offices at McMaster Innovation Park.
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NEW POSITION! EnviroSim is always seeking bright, ambitious, educated people to join our company.
Careers...

Sydney, Australia BioWin Training Course, scheduled for October 18 - 20, 2010.
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"The BioWin Advantage" e-tech letter : 1-D Settling Models
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EnviroSim to present at 6th International Conference on Sustainable Water Environment on July 31, 2010 in Newark, Delaware
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Introductory and Advanced BioWin Training Courses scheduled for September 13-17, 2010 at the EnviroSim offices in Hamilton, Ontario.
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EnviroSim to present at AETT Specialty Conference – Recent Advances in the Operation & Control of the Activated Sludge Process, July 15, 2010, Leeds, UK.
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EnviroSim is delighted to announce that its latest version of BioWin is now available with Multi-Language capabilities.
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EnviroSim to present at WEF Specialty Conference – Membrane Applications 2010, June 6 – 9, 2010, Anaheim, CA.
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Dwight Houweling becomes latest EnviroSim team member to achieve the Professional Engineer designation.
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"The BioWin Advantage" e-tech letter : Most Popular Biowin User Questions
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Introductory and Advanced BioWin Training Courses scheduled for April 19 - 23, 2010 at the EnviroSim offices in Hamilton, Ontario.
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BioWin Training for Engineering Applications is scheduled for March 16 – 18 at Tongji University, Shanghai PR China
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EnviroSim is pleased to announce the addition of a new team member, Shelley Potter.
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United Kingdom BioWin Training Course scheduled for January 2010.
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EnviroSim is pleased to announce the opening of our European Business.
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The EnviroSim team wishes to thank everyone who made our presence at WEFTEC 09 truly enjoyable.
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Introductory and Advanced BioWin Training Courses scheduled for November 30 - December 4, 2009 2009 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim is delighted to announce the release of BioWin 3.1, featuring MBR, Microscreen and Cyclone elements as well as a new SBR modeling technique
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EnviroSim is to exhibit at WEFTEC. 09, the 82nd Annual Water Environment Federation Technical Exhibition and Conference, from October 12 to 14, 2009, at McCormick Place, Orlando, FL.
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Melbourne, Australia BioWin Training Course, scheduled for October 26 - 28, 2009.
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EnviroSim is to present at WEFTEC.09, 82nd Annual Water Environment Federation Technical Exhibition and Conference, October 10 to 14, 2009, Orange County Convention Center, Orlando, FL.
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EnviroSim is pleased to announce the addition of a new team member, Leiv Rieger.
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BioWin Seminar and Training scheduled for September 6, 10 & 11, 2009 at the IWA’s Specialized Conference on Nutrient Management in Wastewater Treatment Processes in Krakow, Poland
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EnviroSim to present at IWA Specialized BNR Conference, September 6 - 9, 2009, Krakow, Poland.
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European BioWin User Group Meeting, September 21, 2009, Bordeaux, France.
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EnviroSim to present at 5th IWA Specialised Membrane Technology Conference for Water and Wastewater Treatment, Sep 1 to 3, 2009, Beijing, P.R. China
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EnviroSim contributes to IWA’s Conference on Sustainable Management & Technologies of Sludges, August 8 - 10, 2009, Harbin, PR China.
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EnviroSim launches e-tech letter “The BioWin Advantage”
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Introductory and Advanced BioWin Training Courses scheduled for July 27-31, 2009 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim to present at WEF Specialty Conference - Nutrient Removal 2009, June 28 – July 1 2009, Washington DC.
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EnviroSim contributes to WEF Specialty Conference – Residuals and Biosolids 2009, Sustainable Biosolids Management, May 3 - 6, 2009, Portland, OR.
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EnviroSim contributes to WEAO 2009 Annual Conference –April 5 - 7, 2009, Toronto, ON.
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Introductory and Advanced BioWin Training Courses scheduled for March 30 - April 3, 2009 at the EnviroSim offices in Flamborough, Ontario.
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Australia and New Zealand BioWin User Group Meeting scheduled for December 10, 2008
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Modeling Workshop in China scheduled for November 18-19, 2008
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Australia and New Zealand BioWin Training Course, scheduled for December 3rd - 5th, 2008
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Australia and New Zealand Calibration of Wastewater Plant Simulators Workshop, scheduled for December 8th - 9th, 2008
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Introductory BioWin Training Course scheduled for January 8-9, 2009 in Las Vegas, Nevada.
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EnviroSim is to exhibit at WEFTEC. 08, the 81st Annual Water Environment Federation Technical Exhibition and Conference, from October 18 to 22, 2008, at McCormick Place, Chicago, IL.
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Introductory BioWin Training Course scheduled for November 17-18, 2008 in Montreal, Quebec.
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EnviroSim is to present at WEFTEC.08, 81st Annual Water Environment Federation Technical Exhibition and Conference, October 18 to 22, 2008, McCormick Place, Chicago, IL.
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EnviroSim to present at IWA World Water Congress and Exhibition, Sep 7 to 12, 2008, Vienna, Austria
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EnviroSim is pleased to announce the opening of our Australian office.
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Introductory and Advanced BioWin Training Courses scheduled for August 25-29, 2008 at the EnviroSim offices in Flamborough, Ontario.
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New Authorized Reseller for Algeria, Libya, Mauritania, Morocco and Tunisia
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Introductory BioWin Training Course scheduled for June 30th - July 1st, 2008 at City College of New York, New York, NY
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United Kingdom Calibration of Wastewater Plant Simulators Workshop scheduled for June 11th - 12th, 2008
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New Zealand Training Course scheduled for May 2008.
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Australian Training Course scheduled for May 2008.
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Introductory and Advanced BioWin Training Courses scheduled for May 5-9, 2008 at the EnviroSim offices in Flamborough, Ontario.
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United Kingdom BioWin Training Course scheduled for April & May 2008
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New Authorized Reseller for Iran.
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EnviroSim contributes to WEF Specialty Conference –Residuals and Biosolids 2008, Traditions, Trends and Technologies, March 30 - April 2, 2008, Philadelphia, PA.
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EnviroSim to present at CAWQ Symposium on Water Quality Research, February 11 – 12, 2008, Burlington, Ontario.
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EnviroSim is delighted to announce the release of BW Controller for whole-plant process control simulation.
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Introductory and Advanced BioWin Training Courses scheduled for February 25-29 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim is pleased to announce BioWin 3 enhancements
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WEFTEC 07: A thank you from the EnviroSim Team at WEFTEC.07
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EnviroSim is pleased to announce the return of Dr Chris Bye from sabbatical in Australia.
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United Kingdom BioWin User Group Meeting scheduled for November 22, 2007.
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EnviroSim is to exhibit at WEFTEC.07, 80th Annual Water Environment Federation Technical Exhibition and Conference, October 13 to 17, 2007, San Diego Convention Center, San Diego, CA.
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EnviroSim is to present at WEFTEC.07, 80th Annual Water Environment Federation Technical Exhibition and Conference, October 13 to 17, 2007, San Diego Convention Center, San Diego, CA.
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EnviroSim is pleased to announce the addition of a new team member, Dwight Houweling.
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*UPDATE* BOTH COURSES NOW FULL : Introductory and Advanced BioWin Training Courses scheduled for October 29 - November 2, 2007 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim to present at 2007 Senior Technologic Forum on Water Industry, August 3 - 4, 2007, Beijing, China
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EnviroSim to present at Particle Separation Conference (PS 2007), July 9-12, 2007 in Toulouse, France.
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EnviroSim to present at International Workshop on Monitoring and Sensor for Water Pollution Control, June 13-14, 2007, Tsinghua University, Beijing, China.
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Introductory and Advanced BioWin Training Courses scheduled for July 23-27, 2007 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim to present at WATERMATEX 2007, May 7 – 9, 2007, Washington, DC.
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United Kingdom BioWin Training Course scheduled for June, 2007
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EnviroSim to present at CLONIC PROJECT workshop, April 19 – 20, 2007, Barcelona, Spain.
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EnviroSim to present at WEF / AWWA Specialty Conference – Joint Residuals and Biosolids Management Conference 2007, Biosolids and Residuals: Innovation and Sustainability, April 15 – 18, 2007, Denver, CO.
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EnviroSim to present at WEF / IWA Specialty Conference - Nutrient Removal 2007, The State of the Art, March 4 - 7 2007, Baltimore, Md.
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EnviroSim is delighted to announce the release of BioWin 3 which now includes Biofilm and Sidestream modeling
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Introductory and Advanced BioWin Training Courses scheduled for April 23-27, 2007 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim is pleased to announce the addition of a new team member, Zhirong Hu
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EnviroSim is pleased to welcome visiting Professor Yves Comeau
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Introductory and Advanced BioWin Training Courses scheduled for January 29 - February 2, 2007 at the EnviroSim offices in Flamborough, Ontario.
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WEFTEC 06: References to BioWin section expanded and a thank you from the EnviroSim Team
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Australian Training Course scheduled for December, 2006
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EnviroSim is to exhibit at WEFTEC.06, 79th Annual Technical Exhibition and Conference, October 21 to 25, 2006, Dallas Convention Center, Dallas, TX.
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New Authorized Reseller for France.
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United Kingdom BioWin Training Course scheduled for September, 2006.
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South Africa BioWin Training Course scheduled for August, 2006.
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EnviroSim to present at IWA Specialized Conference, Biofilm VI, 24 to 27 Sep 2006, Amsterdam, The Netherlands.
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EnviroSim to present at IWA World Water Congress and Exhibition, Workshops & Courses, Sep 7 to 14, 2006, Beijing, PR China.
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New Authorized Reseller for Egypt, Saudi Arabia, United Arab Emirates, Oman, Yemen and Tunisia.
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Australian and New Zealand BioWin Training Courses scheduled for July and November, 2006
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Introductory BioWin Training Course scheduled for July 10th - 11th, 2006 at the EnviroSim offices in Flamborough, Ontario.
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Calibration of Wastewater Plant Simulators Workshop, scheduled for June 19th - 20th, 2006 at the EnviroSim offices in Flamborough, Ontario
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Advanced BioWin Training Course scheduled for April 24th - 25th, 2006 at the EnviroSim offices in Flamborough, Ontario
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Introductory BioWin Training Course scheduled for March 6th - 7th, 2006 at the EnviroSim offices in Flamborough, Ontario
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News Archive

This page contains older news from June 1999 until December 2005.

EnviroSim : New Team Member December 1, 2005
EnviroSim is delighted to add a new team member, Robert Walker. Robert joins us from McMaster University where he recently graduated with a Bachelor in Engineering, Software Engineering. Robert will work closely with Mark Fairlamb on our accelerated product release program. Welcome Robert.

WEFTEC 05 November 11, 2005
The EnviroSim Team wishes to thank everyone who made our presence at WEFTEC 05 - as both presenters and exhibitors - such a huge success. We had a truly enjoyable event; it was fantastic both meeting with old friends and making new ones.

Once again, a number of papers presented at WEFTEC made use of BioWin. To see the variety of projects in which BioWin was utilized, check the BioWin References section. Papers from this year are listed at the top.

EnviroSim to Exhibit at WEFTEC.05 September 26, 2005
EnviroSim is delighted to announce that it will exhibit BioWin, industry accepted as the most complete, accurate and easy-to-use dynamic wastewater treatment process modeling and simulation software at the upcoming WEFTEC.05 Technical Exhibition and Conference, October 29 to November 02, 2005.

Please join us at Hall E Booth 8654 (this link loads quite slowly) and learn about the power and precision of BioWin and how process modeling can help you.

Click here for event overview      

Introductory BioWin Training Course September 15, 2005
EnviroSim has scheduled Introductory BioWin Training for October 17th - 18th, 2005 at our offices in Flamborough, Ontario. To register for the this two-day course, please fill out the registration form, or contact us for further information.

EnviroSim to Present at WEFTEC.05 September 8, 2005
EnviroSim is pleased to announce that we will make a significant contribution to the upcoming WEFTEC.05 Technical Exhibition and Conference, October 29 to November 02, 2005.

EnviroSim will be making several paper presentations and is involved with the International Water Association (IWA) 'Guidelines for Use of Activated Sludge Models in Practice' workshop on October 30, 2005.

Click here for event overview.     

EnviroSim to Present at IWA in Poland August 15, 2005
EnviroSim is pleased to announce that we will make a major contribution to the upcoming International Water Association (IWA) Specialized Conference on Nutrient Management in Wastewater Treatment Process Recycle Streams from September 19-21, 2005 and the Modeling Activated Sludge Plants Seminar and Workshop on September 18, 22 & 23, 2005 in Krakow Poland.

EnviroSim will be presenting papers and chairing sessions in the Scientific Program and will be heavily involved in presenting a Seminar/Workshop course titled Modeling Activated Sludge Plants.

EnviroSim Discussion Board June 20, 2005
EnviroSim is pleased to announce the launch of our new discussion board. This board provides EnviroSim customers with a forum to exchange ideas, share experiences, and offer solutions regarding BioWin and other EnviroSim products.

Click here to REGISTER. Then simply choose a USER NAME and a PASSWORD.

The old discussion board will remain active temporarily.

Download BioWin 2.2 using the new BioWin Update utility June 15, 2005
EnviroSim is pleased to announce the release of BioWin 2.2. Customers leasing BioWin (Version 2.1 or higher) can now update their copy of the software using the new BioWin Update utility.

Click here for a list of new features in Version 2.2
Click here to download the BioWin Update utility.

EnviroSim exhibits BioWin at IFAT in Munich April 25, 2005
Come visit us in Munich from April 25 to 29. IFAT (www.ifat.de) is the largest environmental show in the world, and EnviroSim will showcase BioWin in the Canadian Pavilion (Building A4 - Stand 315).

BioWin is affordable, simple to use, and highly accurate. See for yourself why it is the most widely applied process tool around the world. It contains more than 30 unit processes, the ASM model library, plus EnviroSim's pre-calibrated, pH enabled, combined activated sludge/anaerobic digestion model. For analysis of modern biological nutrient removal and integrated solids/liquid processing facilities BioWin is an essential tool for all process engineers.

Don't miss the chance to talk to Mark Fairlamb (lead developer) and Imre Takacs (senior modeller) about the capabilities and future development of BioWin.

See you in Munich.

EnviroSim Announces Release of BioWin 2.1 July 19, 2004
Existing BioWin users who are leasing the software can now upgrade to the new BioWin 2.1. EnviroSim’s policy is that upgrades are included in the annual lease, and these usually are distributed electronically. With this upgrade to BioWin 2.1 our aim is that all users should receive a replacement CD because the upgrade requires a complete installation. The cost for CD preparation, courier shipping and handling will be US$100.

Purchase Customers
Customers that purchased BioWin prior to July, 2003 may order an upgrade here.

VERY IMPORTANT - Click here to download Release Notes: This document will get you started in the new BioWin.

To order, click here

EnviroSim BioWin at WEFTEC October 29, 2003
Once again, a number of papers presented at WEFTEC made use of BioWin. To see the variety of interesting projects BioWin was used in, check the BioWin References section. Papers from this year are listed at the top.

EnviroSim Web Site Updates Complete August, 2003
The EnviroSim Web Site has undergone tremendous structural and aesthetic changes. Please click around and enjoy the new site

WERF Manual Published and Available August, 2003
Envirosim was extensively involved in the development of a manual describing methods for the characterization of wastewater and techniques for model calibration. This manual is now available from the Water Environment Research Foundation.

Read a paper on BioWin in Korean August, 2003
Read a paper by Byonghi Lee, entitled: Developing a New BNR (Parallel BNR) Process by Computer Simulation

Calibration Course in Paris by Envirosim a Success May 26/27, 2003
The second EnviroSim Calibration Seminar was held in Paris in May 2003. Influent fractionation, nitrification rate measurement methods, and various calibration techniques based on the latest literature as well as recent work by EnviroSim and other researchers, were presented and discussed with the participants. Responding to the success of the seminar and interest of the wastewater engineering community, EnviroSim will offer the course in the future in Europe and other locations around the world.

IWA ASM 1, 2d, and 3 Now Available August 14, 2002
The IWA ASM models are now available in BioWin. Download the model library and accompanying help, and you can start using the models in any plant layout configuration. Compare BioWin and IWA model predictions or simply run published IWA model configurations for reference. In the future EnviroSim will make other international models available in BioWin - check back for updates.

Imre Takacs Joins EnviroSim Associates Ltd. February, 2002
Dr. Imre Takacs joined EnviroSim this year in February. Imre brings close to a quarter century of experience in environmental modeling and wastewater treatment processes to EnviroSim. He will oversee exciting new developments in BioWin, and complement the unbeatable experience EnviroSim can offer in process modeling to its clients. You can send Imre an e-mail anytime at imre@envirosim.com.

BioWin at WEFTEC October 18, 2001
Once again, a number of papers presented at this year's WEFTEC conference made use of BioWin. To see the variety of interesting projects BioWin was used in, check the BioWin References section. Papers from this year are listed at the top.

BioWin Anaerobic Digester Update March 8, 2001
The latest version of BioWin (v 1.2.1) has entered the final beta testing stage. We expect the official release will take place very soon. This represents a major upgrade to BioWin, incorporating a number of new features. A brief summary of these includes:

  • Automatic report generation (printout or Microsoft Word™);
  • Anaerobic digester element;
  • Grey box element with built in equation editor to allow users to set up their own models;
  • Activated primary settling tank element (i.e. PST with biological reaction);
  • BOD influent element (allows input of influent wastewater data in terms of BOD, TSS, VSS, etc.);
  • New model processes and state variables (including 4 user-defined state variables);
  • Expanded documentation of model kinetics and stoichiometry, and influent nutrient (i.e. nitrogen and phosphorus) fractionation;
  • New types of tables and series gives even more flexibility in data presentation.


EnviroSim Has Moved! July 28, 2000
EnviroSim has moved to a new office location. For updated contact details, please visit the Contact Us page.

BioWin Update Released July 7, 2000
We have begun the process of upgrading our users to the latest version (1.1.2) of BioWin. A number of enhancements and fixes have been incorporated in this release. Detailed explanation of the changes may be found in the following technical note.

Web Site Structure Changes April 26, 2000
In order to give EnviroSim customers easier access to information, we have recently made some changes to the structure and content of our web site:

  • We have expanded and added to the Downloads section. Users of our products are able to download sample configurations for free!! In the future, this section will continue to expand and have more configurations added.
  • To give users of our products another means of communicating with us (and each other) we have added a Discussion Forum to our web site. Users (or potential users) of our software products can post messages and get feedback from both EnviroSim staff and other users.
  • To help users of our web site find the information they want quickly, we have added search functionality to our web site. From the Search page, users can perform both simple and advanced queries of all the material contained on our web site.
  • The Publications and References section has been reorganized and expanded to include more papers. It also has been moved up within the web site's navigational structure so that it is easier to find.
  • The BioWin Technical Notes section has had three additional documents added to it.


Demonstration Version Released December 20, 1999
EnviroSim has released a demonstration version of BioWin, our wastewater treatment process simulator. Now prospective users can experience firsthand the power of BioWin. Click here to download.

Sequencing Batch Reactor Update November 24, 1999
The development of BioWin's Sequencing Batch Reactor module is finished. The next release of BioWin incorporating the SBR module is available now. This BioWin release includes five new SBR modules:

  • A single-tank SBR;
  • An SBR with an always-mixed hydraulically linked pre-treatment zone;
  • An SBR with two always-mixed hydraulically linked pre-treatment zones;
  • An SBR with a mix/settle hydraulically linked pre-treatment zone;
  • An SBR with two mix/settle hydraulically linked pre-treatment zones.

Users will be able to set up complex operating patterns easily using BioWin's elegant interface. Vary airflow rates or dissolved oxygen setpoints during the SBR mixing phase using BioWin's scheduling utilities. Specify a temperature pattern over an operating cycle, or have a time-varying SBR underflow rate - all this is easy to do with BioWin. See the BioWin section of our web site for more information.

BioWin Now Shipping June 16, 1999
The latest 32-bit version of EnviroSim's leading wastewater treatment process simulator is now available. This latest version developed with the most modern software tools is a winner...

  • Easy to use...but massively powerful and efficient;
  • Easy to customize;
  • Access to all physical, operational, control and modeling data from a single graphical interface;
  • Point-and-view data windows linked to interface;
  • Album with pages for organizing tables and graphs efficiently;
  • Explorer for tree-like data view;
  • Presentation-quality professional graphics;
  • Rapid report generation and interface with other Microsoft Office products such as Word, Excel, and PowerPoint;
  • View help files either in your browser (Win98 format) or in Win95 format;
  • Context-sensitive online help;
  • Extensive documentation in electronic format.

See the BioWin section of our web site for more information.

Most recent news from January 2006 until July 2008.

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