Dicyandiamide Formaldehyde Resin is our BWD-01 Water Decoloring Agent, which is a new type of high efficient decolorizing coagulant, it has been developed for more than 10 years, with very good stability.
It is a cationic quaternary polymer with medium molecular weight polymeric and has high color removal of dyeing effluent.
By providing a large number of cations, the negative charge is brought on dye molecules are neutralized instability, at the same time with color removal chemical by a large number of hydrolysis of flocs. Can be adsorbed dye, destabilization of the snare, from water separation, so as to achieve the purpose of bleaching.
It is a special product for de-coloring, flocculating, CODcr decreasing, and other application
It is used to remove the color of wastewater generated by textiles process houses and dyes industries and other fields.
The colored effluents, generated by the industries, when left untreated, play havoc with reusable water resources. For process houses, in water-scarce areas, it comes as heaven-sent facilitating recycling of the industrial effluent into process water. Our Dicyandiamide Resin is to solve this problem.
It is specially working high performance with the dyeing wastewater containing the hydrophilic dyes (reactive dyes, acid dyes, disperse dyes, etc.), less dosage, the color clear, fast speed, high processing liquid clarification of the settlement, but also reduces the composition of COD, improve the COD removal rate.
It can be used before or after the biochemical treatment, suggested to dose after the biochemical treatment, can be with low consumption, and low effect on the bacteria.
To reduce the costs of color wastewater treatment, suggested using poly aluminium chloride together, which can reduce the dosage of color removal chemicals.
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. It is slightly acidic, when skin contact, wash immediately with plenty of water.

Specifications

Product Name:	Dicyandiamide Formaldehyde Resin
Appearance:	Colorless to Yellowish Translucid Liquid
Cas No	55295-98-2
Solid Content:	≥50%
Specific Gravity at 20°C:	1.1-1.3
PH Value (30% Solution):	3-6
Viscosity(25°C,cps):	50-300
Solubility:	Soluble With Water at Any Rate
Package:	30kgs net plastic drum, 250kgs net plastic drum palletized, 1250kgs net IBC drum
Storage Temperature:	Room temperature(10-35℃)

Application Fields

Dicyandiamide Resin is mainly used as a decoloring coagulant for high-coloring effluent from textile dyeing & printing mills, dyestuffs & pigment mills, ink & paper making mills, and color removal treatment.
Dicyandiamide Resin is suitable to treat wastewater with different dyes, especially water-soluble dyes such as Reactive dye, Acid dye, Disperse dye, Direct dye, Sulphur dye, Vat dye, etc.
In the paper & pulp-making industry, it can be used as a retention agent in the production process.

Competitive Advantage

1	Dicyandiamide Resin has stronger decolorization (50%~99%) and removal of COD (50%~80%).
2	Used to de-color high-coloring effluent from textile and dyestuffs mills.
3	High performance to treat wastewater with soluble and insoluble dyestuffs, such as Reactive, Acid, Disperse, Direct Dyestuff, etc.
4	Specially used to treat color wastewater from the textile and dyeing industry, pigment industry, printing ink industry, and paper industry.
5	Used as a retention agent in the paper & pulp processing
6	Faster sedimentation, better flocculation.
7	Non-pollution (no aluminum, chlorine, heavy metal ions, etc.).
8	It can be used before or after biological treatment.
9	Less sludge is produced than other inorganic coagulants.

Application Methods

1	Make a solution of Dicyandiamide Resin, and mix with 40 times water to have a 2.5% solution for use.
2	Make polyaluminium chloride (PAC) solution, with 2-5% Al2O3
3	Have a solution of Polyacrylamide (Polyelectrolyte), 0.1%.
4	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)
5	Dose PAC solution, and mix with effluent completely. about 1-3 minutes
6	Add BWD-01 solution, mix with effluent completely, about 5-10 minutes
7	Add small content of anionic polyelectrolyte solution, and mix slowly to have big floc. (this step is a suggestion)
8	Sedimentation
9	Check color for treated effluent
10	Adjust the dosage of BWD-01 and PAC to do more tests to have better testing results.

Application Case:

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:
1	Test and adjust the pH of the effluent to 7-9
2	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.
3	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.
Dosage:
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:

Product Tags:

pigmentation removal

decolorant for dyeing wastewater

pigment removal

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