Polyelectrolyte for power plants
Thermal and captive power plants clarify raw water for cooling and boiler make-up, and treat run-off and effluent from coal handling and the plant itself.
Sunfloc Anionic HQ for regular plant use, or Anionic MQ for smaller plants and trials. ETP sludge at the plant usually needs a cationic grade. Confirm on your own sample with a free jar test.
Raw water pre-treatment
Clarifiers ahead of the filters and demineralisation plant use a coagulant followed by an anionic polymer. Start with Anionic HQ or Anionic MQ.
Coal handling run-off
Coal-bearing run-off settles with an anionic grade, as in coal washing.
ETP and sludge
Biological and organic sludge from the plant ETP usually needs a cationic grade: Cationic HQ or Cationic MQ.
Getting the dose right
Raw water quality swings with the season. Re-check the dose by jar test when turbidity changes.
Related
Polyelectrolyte dosing guide
Starting doses, solution strength and how to work out kilograms per day.
Read →Where this work clusters
Three water circuits, three doses
A power station treats raw water, cooling and ash water, and each behaves differently. Raw-water clarifiers see turbidity that follows the river, and an anionic polymer after the coagulant keeps the floc settling. Cooling-water blowdown is usually clean already. Ash-handling water is heavy in fine mineral solids and settles quickly with a low anionic dose.
Because flows are large, small differences in dose become large differences in cost. A calibrated metering pump and a daily jar test are worth more than any change of grade.
Worked example: 3,000 m³ a day at 0.3 mg/L is 0.9 kg of polymer a day, or about 27 kg a month, made up at 0.1% as 900 litres of solution a day. That is an illustration; your jar test sets the real dose.
Sources: ASTM D2035-19, Coagulation-Flocculation Jar Test of Water.
Not sure which grade suits your water?
Send us a one-litre sample or describe your process. We test it in our lab free of charge and recommend a grade and starting dose, and quote within 1 business hour.