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Introductory and Advanced BioWin Training Courses scheduled for February 21-24, 2012 at the EnviroSim offices in Hamilton, Ontario.
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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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Melbourne, Australia BioWin Training Course, scheduled for November 9 - 11, 2011.
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EnviroSim is to present at WEFTEC.11, 84th Annual Water Environment Federation Technical Exhibition and Conference, October 15 to 19, 2011, Los Angeles Convention Center, Los Angeles, CA.
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Introductory BioWin Training Course scheduled for November 17-18, 2011 in Reading, UK.
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Introductory BioWin Training Course scheduled for September 19-20, 2011 in Hamilton, Ontario.
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"The BioWin Advantage" e-tech letter : Using a Model Primary Settling Tank
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Calibration of Simulators Workshop scheduled for September 22-23, 2011 in Hamilton, Ontario
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Introductory BioWin Training Course scheduled for August 11-12, 2011 in Atlanta, Georgia.
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"The BioWin Advantage" e-tech letter : Upflow Anaerobic Sludge Blanket Reactors
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Introductory and Advanced BioWin Training Courses scheduled for June 6th - 10th, 2011 at the EnviroSim offices in Hamilton, Ontario.
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New Authorized reseller for Turkey
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EnviroSim is pleased to announce BioWin Engineering Applications training in Guangzhou, PR China.
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EnviroSim in association with Nolasco Associates is please to announce a BioWin seminar on April 4, 2011 in Mexico City
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EnviroSim is delighted to announce the release of PetWin+
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"The BioWin Advantage" e-tech letter : Simulating Step Feed for Storm Events
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EnviroSim to present at the WEF / IWA Specialty Conference –Nutrient Recovery and Management, January 9 – 12, 2011, Miami, FL.
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Introductory BioWin Training Course scheduled for February 7th-8th, 2011 in Scottsdale, Arizona.
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Introductory and Advanced BioWin Training Courses scheduled for January 31st - February 4th, 2011 at the EnviroSim offices in Hamilton, Ontario.
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"The BioWin Advantage" e-tech letter : The Rates Window in BioWin
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EnviroSim is to present at WEFTEC.10, 83rd Annual Water Environment Federation Technical Exhibition and Conference, October 2 to 6, 2010, New Orleans Morial Convention Center, New Orleans, LA.
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EnviroSim is pleased to announce the addition of one-day specialty courses to its training portfolio.
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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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United Kingdom BioWin Training Course scheduled for January 2010.
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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. :

· Influent Wastewater Characteristics   · 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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