Polyelectrolyte for paper, textile and mineral processing
Flocculation and settling of suspended solids in process water and effluent.
Sunfloc Anionic HQ for regular plant use, or Anionic MQ for smaller plants and trials. Textile effluent usually needs a cationic grade instead. Confirm on your own sample with a free jar test.
Mineral processing
Flocculation and settling of suspended solids in mineral-processing streams. Anionic polymers are the usual choice for mineral slurries; the right grade depends on the mineral and pulp chemistry.
Paper
Polyelectrolyte flocculant for paper-industry effluent and clarification. Cationic grades can work on organic fibre fines; anionic grades after coagulation.
Textile
Polyelectrolyte flocculant for textile-industry effluent, normally after coagulation and colour removal steps. For decolorants and coagulants see surajchemicals.com.
Each industry in detail
Three sectors, three kinds of test
These three sectors look unrelated, but they are judged by the same simple tests. In paper, the polymer is used to hold fines in the sheet and to clear the white water. In textiles, it sits behind a decolorant and collects the settled solids. In mineral work, it speeds up settling of fine particles so the water can be reused.
For paper and mineral streams, record settling rate and overflow clarity at each dose. For textile streams, record colour as well, because published work on synthetic dyeing effluent found that a coagulant and polyacrylamide alone removed only part of the colour (44.7% for an acrylic dyeing effluent and 33.2% for a cotton one in one study), which is why a decolorant step is added first.
A jar test is the fair way to compare options: the same water, the same stirring, one variable at a time. ASTM D2035 describes the practice, and it is the right starting point for any new stream.
Sources: Repositório Aberto da Universidade do Porto: coagulation/flocculation of synthetic dyeing effluents; 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.