Dicyandiamide Formaldehyde Resin
Colorless to Yellowish Translucid Liquid
Specific Gravity at 20°C:
PH Value (30% Solution):
Soluble With Water at Any Rate
30kgs net plastic drum, 250kgs net plastic drum palletized, 1250kgs net IBC drum
Dicyandiamide Resin has stronger decolorization (50%~99%) and removal of COD (50%~80%).
Used to de-color high-coloring effluent from textile and dyestuffs mills.
High performance to treat wastewater with soluble and insoluble dyestuffs, such as Reactive, Acid, Disperse, Direct Dyestuff, etc.
Specially used to treat color wastewater from the textile and dyeing industry, pigment industry, printing ink industry, and paper industry.
Used as a retention agent in the paper & pulp processing
Faster sedimentation, better flocculation.
Non-pollution (no aluminum, chlorine, heavy metal ions, etc.).
It can be used before or after biological treatment.
Less sludge is produced than other inorganic coagulants.
Make a solution of Dicyandiamide Resin, and mix with 40 times water to have a 2.5% solution for use.
Make polyaluminium chloride (PAC) solution, with 2-5% Al2O3
Have a solution of Polyacrylamide (Polyelectrolyte), 0.1%.
Have effluent, test pH value, and adjust pH value to 7-9. (It is very important, higher or lower pH, BWD-01 works not well)
Dose PAC solution, and mix with effluent completely. about 1-3 minutes
Add BWD-01 solution, mix with effluent completely, about 5-10 minutes
Add small content of anionic polyelectrolyte solution, and mix slowly to have big floc. (this step is a suggestion)
Check color for treated effluent
Adjust the dosage of BWD-01 and PAC to do more tests to have better testing results.
A. When have biological treatment first and after they make chemical treatment.
B. When they are treated first by chemicals, then the usual dosages are:
Test and adjust the pH of the effluent to 7-9
First, we apply the PAC (contact time 3-5 min with the wastewater), after then Dicyandiamide Resin (contact time 5-10 min), and after then anionic polyacrylamide.
It will give too much economy if we'll adjust the pH 7-9, otherwise, the consumption of color removal chemicals will be ~20% higher.
50-80 ppm Dicyandiamide Resin (raw)
80-100 ppm Dicyandiamide Resin (raw)
15-20ppm Polyaluminum Chloride (solid)
15 -30 ppm PAC(solid)
1 - 2 ppm Anionic Polyacrylamide (solid)
1 - 2 ppm Anionic Polyacrylamide(solid)
Bluwat Dicyandiamide Formaldehyde Resin Plant Snapshot: