Cationic PAM Powder For dewatering

Cationic PAM powder (sludge cationic PAM) represents a significant advancement for sludge treatment. This specialized form of cationic PAM powder (polyacrylamide), delivered in powder form, finds extensive applications in water treatment,wastewater treatment and various industrial processes.

The dissolution time of cationic polyacrylamide (CPAM) powder is a crucial parameter to be strictly controlled in applications like oilfields and water treatment, as it directly impacts the efficiency of use and cost. The dissolution time is defined as the time it takes for the powder, once added to water, to disperse completely and for its molecular chains to fully extend (with no visible particles or "fish - eyes"). Generally, it ranges from 30 minutes to several hours. The dissolution time of CPAM powder is the result of the combined effects of the powder's own properties (molecular weight, particle size), process parameters (temperature, agitation, concentration), and water quality conditions. In practical applications, it is necessary to optimize the dissolution process according to the product characteristics. For example, in high - temperature and low - salt scenarios, increasing the water temperature can accelerate dissolution. In high - salt scenarios, it is required to refine the particles and reduce the concentration. While ensuring complete dissolution, it is also essential to avoid the degradation of molecular chains, so as to maximize its performance in aspects such as flocculation and thickening.

Cationic PAM for dewatring products could be customized according to clients'request. Sludge cationic PAM is confirmed by a jar test after technical communication. 

To determined the specific sludge cationic PAM, the parameters are as follows:

1. The treatment process.  

2. The processing temperatuer. 

3. The style of dewatering machine.

If the powder is directly dumped, it is prone to agglomeration. Therefore, the method of "slow spreading + dispersed dosing" should be adopted. For example, it can be added evenly to the stirred water through a funnel or a screw conveyor to avoid local accumulation. 

If a pre-dispersion device is used (such as making a paste by mixing the powder with a small amount of water first), the dissolution time can be significantly shortened. 

During the dissolution process, continuous stirring is required until there are no particles. However, if the stirring time is too short (incomplete dispersion) or too long (shear degradation), it will affect the final dissolution effect. Generally, after the powder is completely dispersed, it should be stirred at a low speed for another 30 minutes to ensure that the molecular chains are fully extended.

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