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 Formaldehyde Resin is a special color removal chemical, which is a new type of high efficient decolorizing coagulant, it has been developed for more than 10 years, with very good stability.
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.
Less sludge is produced than other inorganic coagulants.
Soluble in water, safe, non-toxic, hydrolytic stable, is not sensitive to the change of pH value, anti-chlorine. Harmless, non-flammable, and non-explosive, it can be stored at room temperature, and it cannot be placed in the sun.
The use of 10-40 times of water diluted nitrile double melamine-formaldehyde resin, and then the diluted liquid added directly in the sewage, with a glass rod to stir a few minutes after sedimentation or flotation can cause the effluent decolorization obtained after the clear liquid.
|2||Wastewater pH value reached 7-10 when can better improve the decolorization effect of dicyandiamide formaldehyde resin.|
When dyeing and other need to deal with the high chroma of wastewater, COD can and of polymer aluminum chloride (PAC) with the use, but attention, not mixed-use. This can effectively reduce the wastewater decolorization processing cost, how to add PAC should be according to the actual situation, it is best to make the professional and technical personnel develop a good solution.
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, 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, mix slowly to have big floc, Sedimentation.
Check color for treated effluent
A. When have biological treatment first and after they make chemical treatment.
B. When they treat first with 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: