Polyelectrolyte for ETP and STP
Anionic and cationic flocculants for clarifier and sludge stages in effluent and sewage treatment plants.
Sunfloc Anionic HQ for regular plant use, or Anionic MQ for smaller plants and trials. For the sludge line, switch to Cationic HQ. Confirm on your own sample with a free jar test.
Where the polymer goes
In an effluent treatment plant the coagulant (alum, ferric chloride or PAC) destabilises the fine solids. The polyelectrolyte then bridges them into larger flocs that settle in the clarifier or float off in a DAF unit. Dose the polymer after the coagulant, after the coagulant has had a moment to mix in, and mix it gently so the flocs are not sheared.
Which charge
- Anionic (Sunfloc Anionic HQ or MQ) is the usual flocculant after a metal-salt coagulant. Typical starting range for industrial effluent: about 0.5–3 mg/L.
- Cationic (Sunfloc Cationic HQ or MQ) suits organic-rich and biological solids, such as STP and food or tannery streams. Typical starting range: about 1–5 mg/L.
Making up and dosing
Prepare a dilute solution, stir gently for 45–60 minutes until the granules are fully dissolved and dose through a metering pump. Use the dosing calculator to turn your flow and dose into kilograms per day and pump rate.
Related streams
Textile, paper, tannery and pharma effluents all use this pattern with different grades and doses. See paper, textile and mineral processing. For coagulants such as alum, ferric chloride and PAC, see surajchemicals.com.
Where this work clusters
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.