Dec 28, 20234 min read
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...
Apr 12, 20214 min read
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...
Apr 12, 20214 min read
Turbidity
Turbidity is defined as the degree to which light is scattered by particles suspended in a liquid. The measured turbidity depends on the...
May 10, 20205 min read
BOD, COD, and TOC
The organic strength of wastewater is measured in three ways: 1) as 5-day biochemical oxygen demand (BOD5), 2) chemical oxygen demand...
Feb 11, 20191 min read
Estimating Organic Content
The following is quoted from W. Wesley Eckenfelder, Jr. in his excellent textbook “Industrial Water Pollution Control”, Third Edition,...
Nov 6, 20175 min read
Nitrogen Testing
Introduction In a recent post I focused on the importance and value of total kjeldahl nitrogen (TKN) testing. That post addressed the...
Nov 3, 20176 min read
Total Kjeldahl Nitrogen
Introduction After all the many years I've been working in water and wastewater treatment it's really just this past year that I have...
May 1, 20176 min read
Testing Equipment
Testing Equipment for Water, Reverse Osmosis, and Wastewater There are several "sets" of laboratory equipment that are critical for...
Dec 19, 20163 min read
ORP
Oxidation Reduction Potential (ORP) Measuring the oxidation reduction potential (ORP) is such an easy, insightful test to perform, it’s a...
Dec 19, 20164 min read
ATP
Adenosine Triphosphate (ATP)—An Introduction I’ve stated previously (OUR Level 1 Testing page) that whenever I evaluate a biological...
