- Oct 9, 2016
- 4 min
Sludge Dewatering
Three Sludge Dewatering Units The data presented on this page comes primarily from two sources as follows: 1. An excellent textbook...
- Oct 9, 2016
- 2 min
Water Hardness
The Water We Use When I travel I seldom give much thought to the water I drink, cook with, and bathe in. But there are occasions when...
- Oct 8, 2016
- 1 min
pH & Alkalinity
pH and Alkalinity Relationships The following two graphics are intended to provide a handy reference describing pH and alkalinity...
- Oct 1, 2016
- 3 min
Life In the Field
Some Frustrations! I travel from one water or wastewater treatment plant to another, week after week, happily (usually) doing my job. And...
- Sep 29, 2016
- 1 min
EPA Fact Sheets
Informative EPA Fact Sheets The United States Environmental Protection Agency (EPA) does an excellent job of assembling and posting...
- Sep 29, 2016
- 1 min
10 State Standards
Wastewater Standards These well-known and reliable wastewater standards have changed slowly over the years, getting updates as needed to...
- Sep 28, 2016
- 2 min
Key ATP Terms
Adenosine Triphosphate (ATP) Testing ATP testing is an advanced analysis for thoroughly evaluating a biological treatment system. Because...
- Sep 26, 2016
- 9 min
Wastewater Temperature
Wastewater Temperature in the Bioreactor Operators know that when the temperature of the wastewater entering the bioreactor is too high,...
- Sep 5, 2016
- 1 min
Activated Sludge Table
Activated Sludge Design Parameters This is a handy chart from the well-known Metcalf & Eddy handbook (Metcalf & Eddy. Wastewater...
- Aug 10, 2016
- 2 min
ASTM OUR Standard Withdrawn
Much to My Dismay! I am a strong advocate for the use and value of oxygen uptake rate (OUR) testing. I find this simple procedure to be...
