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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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EnviroSim is always seeking bright, ambitious, educated people to join our company.
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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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EnviroSim is pleased to announce the addition of a new team member, Robert Walker
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WEFTEC 05: A thank you from the EnviroSim Team and BioWin at WEFTEC.05
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EnviroSim is to present and exhibit at WEFTEC.05, 78th Annual Technical Exhibition and Conference, October 29 to November 02, 2005, Washington Convention Center, Washington, DC.
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Introductory BioWin Training Course scheduled for October 17th - 18th, 2005 at the EnviroSim offices in Flamborough, Ontario.
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EnviroSim to present at IWA Specialized BNR Conference, Seminar and Workshop from September 18 to 23, 2005 in Krakow, Poland.
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EnviroSim launches a new discussion board.
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EnviroSim is pleased to announce the release of BioWin 2.2 - Customers leasing BioWin can now update their copy using the new BioWin Update utility
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Experimental Studies

Good model calibration requires knowledge of not only model parameters but also influent wastewater characteristics, which can significantly influence plant performance, especially BNR systems. Given that these parameters vary from system to system, if a process simulation model is to provide reasonable predictions of system behavior, adequate knowledge of wastewater characteristics and nitrification rate is extremely important, i.e. :

à Influent Wastewater Characteristics   à Nitrification Rate

Influent Wastewater Characteristics
The influent organic material consists of different fractions and sub-fractions; for example, biodegradable and unbiodegradable, each of these with soluble and particulate portions. The magnitudes of these fractions are very important in the description of activated sludge system behavior, particularly with respect to effluent COD quality, solids production and oxygen demand. Similarly, different influent nitrogen fractions can be identified; for example, the portion of the influent TKN which is in the form of saline ammonia. Influent wastewater characteristics may vary, often appreciably, from one municipal waste to another.

Nitrification Rate
In addition to the influent wastewater characteristics, there are a number of parameters which must be defined in order to apply a model to predict system behavior (for example, yields and growth rates). Studies have shown that these stoichiometric and kinetic parameters do not change appreciably for different systems treating municipal wastewaters with the exception of the maximum specific growth rate of nitrifying organisms. In the design and operation of wastewater treatment plants that must remove ammonia, nitrification kinetics are the single most important consideration that determines the size (and hence cost) of the secondary treatment tankage and its operation, once the flows and contaminant loads to be treated are defined. Therefore in the design of a wastewater treatment plant, it is desirable to measure nitrification kinetics to avoid conservative (and costly) assumptions in sizing the secondary treatment tankage.

EnviroSim has extensive experience in measuring this important data. Please contact us for more information.
     

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