Decoloring Chemical with 50% Dicyandiamide Formaldehyde Resin for Paper Water Treatment
Dicyandiamide Formaldehyde Resin
White or light yellow aqueous solution
Specific Gravity :
Not less than 1.20 g/ml (at 25ﾟC)
3-6 (@30% Solution)
30kgs net plastic drum, 250kgs net plastic drum palletized, 1250kgs net IBC drum
Dicyandiamide formaldehyde resin(BWD-01 Water Decoloring Agent) has strong decreasing of COD and decolorization
Has functions of de-color high-colority 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 textile and dyeing industry, pigment industry, printing ink industry and paper industry.
Fast sedimentation, better flocculation.
Less sludge produced than other inorganic coagulants.
Soluble in water, safe, non-toxic, hydrolytic stability, is not sensitive to the change of pH value, anti-chlorine. Harmless, no-flammable and non-explosive, it can be stored at room temperature, it cannot be placed in the sun.
Mix it with water 40-50 times, dilute the solution, and then the dose it 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||Adjust the effluent sample pH value to 8-10, that 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 waste water decolorization processing cost, how to add PAC should be according to the actual situation, it is best to make the professional and technical personnel to develop a good solution.
Add small content of anionic polyelectrolyte solution, mix slowly to have big floc, Sedimentation.
A. When have biological treatment first and after they make chemical treatment.
B. When the treat first by chemicals, then the usual dosages are:
Test and adjustment the pH of the effluent to 8-10
First we apply the PAC (contact time 3-5 min with the waste water), 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 chemical will be ~20% higher.
50-80 ppm Dicyandiamide formaldehyde resin(raw)
80-100 ppm Dicyandiamide formaldehyde 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: