What Will Happen if Too Much Polyacrylamide Flocculant Is Added?

Polyacrylamide (PAM) is a commonly used flocculant that is important in water treatment. However, if you add too much, a series of problems may arise:

Agent turbidity: Excessive addition of PAM will cause turbidity in the water. This is because too many PAM molecules fail to combine with suspended particles effectively and instead form tiny, dispersed particles, thus affecting the transparency and clarity of water.

Excessive flocculation: The main function of PAM is to promote the rapid aggregation and sedimentation of solid particles or suspended matter. However, when too much is added, PAM molecules will combine with too many particles to form flocs that are too large and too heavy. This not only increases the difficulty of stirring and separation during the treatment process, but may also cause clogging of the sedimentation tank and difficulty in cleaning.

Sedimentation problem: Excessive PAM will generate a large amount of flocs, which may not completely settle during the settling process, resulting in a decrease in effluent quality. At the same time, these sediments may adhere to the inner walls of pipes, equipment or sedimentation tanks, affecting the normal operation of the equipment and increasing the cost of cleaning and maintenance.

Increased costs: From an economic point of view, excessive dosing of PAM will undoubtedly increase the consumption of chemicals, which directly leads to an increase in treatment costs.

In summary, excessive addition of polyacrylamide flocculant will have many adverse effects on the water treatment process. Therefore, in practical applications, the dosage of PAM should be strictly controlled to ensure that it is within an appropriate range to achieve better treatment results.