- Dec 28, 2023
- 4 min
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, 2021
- 4 min
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, 2021
- 4 min
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, 2020
- 5 min
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, 2019
- 1 min
Estimating Organic Content
The following is quoted from W. Wesley Eckenfelder, Jr. in his excellent textbook “Industrial Water Pollution Control”, Third Edition,...
- Nov 6, 2017
- 5 min
Nitrogen Testing
Introduction In a recent post I focused on the importance and value of total kjeldahl nitrogen (TKN) testing. That post addressed the...