
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,...

Dec 19, 20166 min read
Food-to-Mass (F:M) Ratio
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...