How to Correctly Dosage Polyacrylamide PAM?

Polyacrylamide (PAM)

(PAM) is a commonly used water treatment agent, widely used in industrial wastewater treatment, sludge dewatering, mineral processing and other fields. It can be used as both flocculant and coagulant aid. According to its different ionic properties, polyacrylamide can be divided into anionic, cationic and nonionic. In order to ensure the efficient utilization of polyacrylamide, the correct dosing method is very important. Here are some basic steps and precautions:

1. Prepare the solution

Dissolving container: Choose a container large enough to ensure that the solution can be fully mixed.

Water Quality Requirements: Use clean water to prepare the solution, avoid using water containing impurities.

Temperature control: Normally, a water temperature between 15°C and 30°C* is appropriate. Too high or too low temperature will affect the dissolution effect of PAM.

2. Dissolving process

Stirring speed: At the beginning, the stirring speed can be faster (about 600-1000 rpm) to disperse the particles; when the PAM starts to dissolve, the stirring speed should be slowed down (about 100-300 rpm) to avoid the formation of agglomerates.

Dosing method: add PAM powder or granule into water slowly and evenly, avoid large amount of input at one time.

Dissolving time: The dissolving process needs some time, usually 1-2 hours. For some high molecular weight products, it may take longer time to dissolve completely.

3. Dosing concentration

Concentration selection: Generally, the solution concentration of anionic PAM and nonionic PAM is recommended to be 0.1%-0.3%, while the concentration of cationic PAM is recommended to be 0.2%-0.5%.

Concentration adjustment: In actual application, the concentration needs to be adjusted according to the specific situation to achieve the effect.

4. Dosing point and dosage

Selection of dosage point: It is important to choose a suitable dosage point, usually in the water flow is relatively smooth and have good mixing conditions for the location of the dosage.

Determination of dosage: The dosage is determined experimentally. This is usually based on the results of water quality analysis and treatment objectives to determine.

5. Safe operation

Personal Protection: During operation, wear appropriate personal protective equipment (PPE), such as gloves and goggles.

Storage conditions: PAM should be stored in a dry and ventilated place, avoiding direct sunlight.

6. Effectiveness monitoring

Regular inspection: Check the treated water quality regularly to evaluate the effect of PAM and adjust the dosage or concentration accordingly.

Following the above guidelines can help you use polyacrylamide more effectively and improve the efficiency of water treatment.