What are the issues to pay attention to when using polyacrylamide?

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  • Release time: 2024-02-06
People who have knowledge of polyacrylamide know that it is mainly used for sewage treatment and has significant effects in preventing secondary pollution. So what should be noted during the use of polyacrylamide?

People who have knowledge of polyacrylamide know that it is mainly used for sewage treatment and has significant effects in preventing secondary pollution. So what should be noted during the use of polyacrylamide? I believe many people are not very clear about this issue, so let me introduce it to you here.

 

1. The size of the floc. Polyacrylamide can be used to adjust the size of flocs in sewage treatment, as flocs that are too small can affect the drainage speed, while those that are too large can reduce the degree of sludge.

 

2. Characteristics of sludge. Sludge can be divided into two types based on its properties: organic and inorganic sludge. Cationic polyacrylamide is used for organic sludge, while anionic polyacrylamide is used for inorganic sludge. When the alkalinity of sludge is strong, cationic polyacrylamide can be used, while when the acidity is strong, anionic polyacrylamide can be used. Moreover, sludge with higher solid content usually requires a higher amount of polyacrylamide.

 

3. The strength of flocs. Polyacrylamide helps to improve the stability of flocs, ensuring that they remain stable without breaking under shear.

 

4. Ionicity of polyacrylamide. For dehydrated sludge, flocculants with different ionic degrees can be selected through small-scale trials to select the best and suitable polyacrylamide. This can achieve better results while reducing the dosage and saving costs.

 

5. Dissolution of polyacrylamide. Only when polyacrylamide is well dissolved can it fully exert its flocculation effect. Sometimes it is necessary to accelerate the dissolution rate, and at this time, one can consider the appropriate concentration of polyacrylamide solution.

 

The above are the issues that need to be paid attention to when using polyacrylamide. We can choose different concentrations of polyacrylamide based on these characteristics to make the most of everything and let polyacrylamide play its greater role.

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