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...

Influent Wastewater Characteristics

This post will provide data/tables to give you a starting point when it comes to evaluating influent wastewater characteristics in the...

Introduction Hydrogen peroxide can be used to increase the dissolved oxygen (DO) concentration in an aerobic bioreactor, often referred...

I get asked every now and then about books I think are best for learning more about wastewater treatment. There are many, many excellent...

Dec 19, 20166 min read

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, 20163 min read

Oxidation Reduction Potential (ORP) Measuring the oxidation reduction potential (ORP) is such an easy, insightful test to perform, it’s a...

Dec 19, 20165 min read

Level 1: Oxygen Uptake Rate—An Introduction Whenever I evaluate a biological treatment system there are two sets of tests I always run:...

Dec 19, 20165 min read

Refinery Wet Gas Scrubber This may seem a little odd, perhaps, but there is one unit process in particular that I really enjoy evaluating...

Dec 19, 20164 min read

Adenosine Triphosphate (ATP)—An Introduction I’ve stated previously (OUR Level 1 Testing page) that whenever I evaluate a biological...