Nitrogen Testing and Alkalinity Control
In this post I focus on aspects of laboratory testing and plant operation that relate to nitrification, a topic I am endlessly fascinated...
May 1, 202211 min read
Cell Generation Time
Bacteria are amazingly complex, even though each is comprised of only a single cell. Bacteria make up about 95 percent of all the...
Apr 3, 20214 min read
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...
May 25, 20207 min read
Estimating RAS TSS
Introduction In this post I'm going to discuss how you can estimate the solids concentration in the return activated sludge (RAS) using...
Sep 10, 20198 min read
Bioaugmentation
Detailed Review of Bioaugmentation Bioaugmentation is the addition of a specially prepared bacterial culture to a bioreactor (aeration...
Jan 2, 201910 min read
The Nitrogen Cycle
Three graphics of the nitrogen cycle are shown in this short, simple post. The first graphic below is one of the most common and you will...
May 2, 20172 min read
Food-to-Mass (F:M) Ratio
Introduction Before going into a detailed discussion of the F:M (food-to-mass or food-to-microorganism) ratio I want to let you know...
Dec 19, 20166 min read
Wastewater Temperature
Wastewater Temperature in the Bioreactor Operators know that when the temperature of the wastewater entering the bioreactor is too high,...
Sep 26, 20169 min read
Activated Sludge Table
Activated Sludge Design Parameters This is a handy chart from the well-known Metcalf & Eddy handbook (Metcalf & Eddy. Wastewater...
Sep 5, 20161 min read
