Precautions for polyacrylamide selection
The degree of sewage pollution and the types of pollutants are different, so the type of polyacrylamide used will also be different, so what should be paid attention to when choosing?
Polyacrylamide
1. Sewage properties:
When treating sludge in wastewater, we need to know whether the wastewater is organic or inorganic, so that we know what polyacrylamide to choose for treatment. For example, after we know it is organic sludge, we know to use anionic polyacrylamide. On the contrary, inorganic sludge is treated with cationic polyacrylamide.
2. Sewage turbidity
In addition to the nature of sewage, we also need to understand the turbidity of these sludges, so that we can know how much polyacrylamide should be used per ton of sewage to remove impurities in the water.
3. Ionity of polyacrylamide:
The ionicity of polyacrylamide is different, so the effect of treating sewage will be different. If polyacrylamide with lower ionicity was used in the past, in order to avoid waste when replacing polyacrylamide with high ionicity, we need to first Take part of the sewage to do a test, and start using it after finding a suitable amount.
4. Dissolution of polyacrylamide:
Whether polyacrylamide can be fully dissolved is also very important to the final effect. When choosing, we have to see if the dissolution speed of this polyacrylamide is fast enough.
