- May 15, 2022
- 5 min
Rules of Thumb—Chemistry
This post provides tips and insights I've come across focused on chemistry topics for wastewater treatment operators. A search on Google...
- May 25, 2020
- 7 min
Increase DO in a Bioreactor with Hydrogen Peroxide & GPS-X Simulation
Introduction Hydrogen peroxide can be used to increase the dissolved oxygen (DO) concentration in an aerobic bioreactor, often referred...
- Mar 8, 2017
- 8 min
OUR Level 3 Testing
Level 3: Treatability OUR Testing This level of oxygen uptake rate (OUR) testing is used to evaluate the impact of different chemical...
- Mar 8, 2017
- 4 min
OUR Level 2 Testing
Level 2: Time to Endogenous Respiration Many activated sludge systems do not achieve endogenous respiration by the time the mixed liquor...
- Dec 19, 2016
- 5 min
OUR Level 1 Testing
Level 1: Oxygen Uptake Rate—An Introduction Whenever I evaluate a biological treatment system there are two sets of tests I always run:...
