11/09/2026
Is Your ETP Running Continuously but COD Is Still Not Coming Down?
Running your ETP continuously does not always mean you are getting the right treatment performance.
High COD at the outlet can be caused by several factors:
Incorrect chemical dosing
Poor equalization of wastewater
Improper pH control
Biological treatment problems
Low or excessive DO
Incorrect MLSS/MLVSS balance
Poor sludge condition
Variation in inlet wastewater characteristics