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...

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...

Best Books

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

Lab Test Interferences

I tend to go back and forth in my view of just how different industrial wastewater treatment is from municipal treatment. I used to be...

Struvite Scale and Its Chemistry

Review of struvite formation in anaerobic digesters and sludge dewatering equipment.

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...

Chemical Oxygen Demand Testing

For me, always traveling, always working at different sites, having to ship lab equipment and set up under less than ideal conditions, I...

Turbidity

Turbidity is defined as the degree to which light is scattered by particles suspended in a liquid. The measured turbidity depends on the...

Testing Equipment

Testing Equipment for Water, Reverse Osmosis, and Wastewater There are several "sets" of laboratory equipment that are critical for...

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