Our Services

Introduction

The accuracy and utility of wastewater process models are greatly increased with reliable model input data. Certain important model inputs, such as wastewater characteristics and rate kinetics, often require experimental measurement.

EnviroSim experimental services include designing and conducting plant-wide intensive sampling campaigns, operation of long-term lab-scale systems to obtain detailed wastewater characteristics and nitrification rates, rapid determination of nitrification rates (e.g. Washout tests), and specific nitrification rate (SNR) tests for screening potential sources of nitrification inhibition.

EnviroSim also undertakes development of waste-specific models and/or model extensions; typically these are for industrial wastewaters. The approach often involves batch testing to determine kinetic and stoichiometric parameters.

EnviroSim has an in-house laboratory where we conduct our own research studies including the development of experimental methods. We also conduct experimental studies in our lab on behalf of clients. Depending on circumstances, we can perform these services at client sites.

Example projects

• Rochester WRP (Rochester, MN) nitrification kinetics using Washout method and inhibition screening using SNR tests
• Brighton WWTP (Brighton, ON) nitrification kinetics inhibition screening using SNR tests
• Ashbridges Bay Treatment Plant (Toronto, ON) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• South River WRC (Atlanta, GA) nitrification kinetics using Washout method and inhibition screening using SNR tests
• Thames Water Beckton STW (London, United Kingdom) screening of plant recycles for nitrification inhibition using SNR tests
• Brantford WWTP (Brantford, ON) nitrification kinetics inhibition screening using SNR tests
• Southwest WRF (St. Petersburg, FL) investigation of biological nutrient removal performance using phosphorous release tests, SNR tests and denitrification rate tests
• Investigation of impacts of gold mine leach pad RO brine on nitrification rate (private industry) using SNR tests
• Fritz Island WWTP (Reading, PA) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• Thames Water Reading STW (Reading, United Kingdom) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• Sulfolane degradation kinetics study (private industry)
• Elmira WWTP (Elmira, ON) detection of phosphorus accumulating organisms using phosphorous release test, measurement of influent biomass, measurement of nitrification kinetics using Washout method and inhibition screening using SNR tests.
• Hagersville WWTP (Hagersville, ON) study on impact of landfill leachate on nitrification kinetics using SNR tests
• Kitchener WWTP (Kitchener, ON) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• Bonnybrook WWTP (Calgary, AB) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• Guelph WWTP (Guelph, ON) nitrification inhibition testing
• Bran Sands WWTP (Middlesborough, UK) nitrification kinetics measurement using Washout method and industrial inhibition screening
• Hespeler WWTP (Hespeler, ON) full-scale sampling campaign design/sampling/analysis for wastewater characteristics and nitrification kinetics using High F/M method
• Guelph WWTP (Guelph, ON) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method
• Galt WWTP (Galt, ON) full-scale sampling campaign design/sampling/analysis for wastewater characteristics
• Greeley WPCF (Greeley, CO) nitrification kinetics measurement using High F/M method
• Denver Metro WWTP (Denver, CO) nitrification kinetics measurement using High F/M method
• Blue Plains WWTP (Washington, DC) methanol-utilizing organisms kinetics measurement
• 75^th Street WWTP (Boulder, CO) nitrification kinetics measurement using High F/M method
• Bradford West Gwillimbury WWTP  (Bradford West Gwillimbury, ON) full-scale sampling campaign design/sampling/analysis for wastewater characteristics and nitrification kinetics using High F/M method
• Bonnybrook and Pine Creek WWTPs (Calgary, AB) wastewater characteristics and nitrification kinetics using lab-scale sequencing batch reactor method

EnviroSim is a recognized world leader in the area of model development, calibration, and application. EnviroSim was a major contributor to the industry-standard publication in this field – WERF’s “Methods for Wastewater Characterization in Activated Sludge Modelling” and recently contributed a chapter on modelling in WEF’s Manual of Practice No. 8. Accurate model calibration greatly increases the power and utility of wastewater process simulators. EnviroSim offers a thorough and comprehensive approach for model calibration that is unparalleled in our industry. Our continual involvement in model calibration projects ensures that we remain at the forefront of our field.