CAS No.: 55295-98-2
Product Name: BWD-01 Water Decoloring Agent 
Chemical Name: Dicyandiamide resin, Quaternary cationic polymer.

This product is a quaternary cationic polymer which is specialized product to treat effluent for colour removal, flocculating and COD decreasing.

Application field:
1, It is mainly used for color removal treatment for high-colority wastewater from dyestuffs plants. It is suitable to treat wastewater with actived, acidic and disperse dyestuffs.
2, It can also be used to treat wastewater from textile industry and dye houses, pigment industry, printing ink industry and paper industry.
3, It also can be used in the production process of paper&plup as rtention agent.

Specificationa:

Application methods:
1, Dilutes with 10 - 40 times water and then dosed into the waste water Directly, after being mixed for several minutes, it can be precipitated or Air-floated to become clear water
2, pH index of the waste water should be adjusted to 7 - 10 for better Result
3 If colority and COD are relatively high, it can be used with the help of Polyaluminum chloride to reduce treatment cost, whether polyaluminum Chloride is used before or afterwards depends on the flocculation test And the treatment process

Package and Storage:
1, It is harmless, non dangerous material
2, It can be stored at room temperature, can not be placed in the Sun
3, 25kg pails, 250kg plastic drums and 1250kg IBC tank.

Application technical information in Europe
 
The dyehouses are divided in 2 categories:
 
A. When they have biological treatment first and after they make chemical treatment. In this case they use:
 
      70-80 ppm BWD-01
      15-20 ppm Polyaluminum Chloride
      1-2  ppm Anionic polyacrylamide
 
First we apply the PAC (contact time 3-5 min with the waste water), after then BWD-01 Water Decoloring Agent (contact time 5-10 min), and after then anionic polyacrylamide.
 
It will give too much economy if we'll adjust the pH 7-8, otherwise the consumption of BWD-01 will be ~20% higher.
 
B. When the treat first by chemicals, then the usual dosages are :
       Adjustment the pH 7-8
       80-100 ppm BWD-01
       10-20 ppm  PAC
       1-2  ppm  Anionic polyacrylamide


Jar test process for BWD-01
 
1. Make solution of BWD-01, mix with 40 times water to have 2.5% solution for use.
2. Make PAC solution, 1-3% Al2O3
3. Have solution of anionic Polyelectrolyte, 0.1%.
4. Have effluent, test pH value, adjust pH value to 8-9.(It is very important, higher or lower       pH, BWD-01 works not well)
5. Add PAC solution, 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, mix slowly to have big floc.
8. Sedimentation
9. Check color for treated effluent
10. Adjust dosage of BWD-01 and PAC to do more test to have better testing result