Pollution board consent and your polymer dosing
How the discharge limits in your consent order connect to the flocculant you dose. General orientation, not legal advice.
The consent order
Under the Water (Prevention and Control of Pollution) Act, a plant that runs an ETP normally holds two permissions from its State Pollution Control Board: Consent to Establish and Consent to Operate. In Tamil Nadu, that board is the TNPCB.
Limits are numbers
The order lists numeric limits for parameters such as pH, BOD, COD and suspended solids (TSS). "Meet the norms" is not enough to design a dosing programme around; the numbers are.
Where polymer shows up
Suspended solids at the outlet depend directly on how well the clarifier flocculates. A poor flocculant dose is one of the quickest ways to fail on TSS.
Keep the evidence
Record jar-test results, polymer grade and dose with your plant log. Each Sunfloc grade has a specification sheet and SDS for your files.
Plan ahead of renewal
Check renewal dates and any revised parameters early. Changing grade or dose needs time to trial and confirm.
Related
Polyelectrolyte dosing guide
Starting doses, solution strength and how to work out kilograms per day.
Read →Not sure which grade suits your water?
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