Poly(Dimethyl diallyl ammonium Chloride)  (alias: PolyDADMAC) is a cationic polymer used in water treatment for decolorization, flocculation and water purification. It works by neutralizing negatively charged particles in the water, such as clay, organic matter and bacteria. This causes the particles to clump together to form flocs, which can then be easily removed from the water.

Here is how PolyDADMAC works in water treatment:

Decolorization: PolyDADMAC removes colored impurities by adsorbing them into the water.

Flocculation: PolyDADMAC causes suspended particles in water to clump together and form flocs. These flocs can then be easily removed from the water by sedimentation or filtration.

Purification: PolyDADMAC kills bacteria and other microorganisms and through the process of flocculation causes them to come together and form flocs, which are then removed from the water and purified.

The following are things to keep in mind when using PolyDADMAC in water treatment:

Dosage: The dose of PolyDADMAC required to treat water will vary depending on the type and concentration of the contaminants in the water. It is important to follow the manufacturer's dosage instructions, which can be obtained by trial and error;

When used alone, a dilute solution should be prepared and typically used at a concentration of 0.5% to 0.05% (of solids);

Temperature: PolyDADMAC is stable over a wide range of temperatures. However, it is important to note that the effectiveness of PolyDADMAC may be reduced at higher temperatures;

Stirring speed: the place of placement and the stirring speed should be carefully selected, now to ensure that the solution is evenly mixed with the material, but also to avoid floc fragmentation;

Dosing: continuous dosing is preferred.

Storage: PolyDADMAC should be stored in a cool and dry place, preferably under 5-40 degrees, do not expose to the hot sun. It should be kept in its original container and sealed to prevent contamination.