PAM, also known as polyacrylamide, is a commonly used flocculant in sewage treatment, mainly used for coagulation and flocculation. Sodium hydroxide, that is, flaky alkali, is mainly used to adjust pH value in wastewater treatment, that is, to adjust alkali, and sulfuric acid is also used to adjust acid and alkali. Generally speaking, PAM will not react with sodium hydroxide and sulfuric acid.

It depends on the order of the reaction. If heavy metals are removed, a large amount of flake caustic soda will be used, which will react with heavy metals first and then combine with pac and amide.

The PH adaptation range of polyacrylamide is limited, which is generally neutral and alkaline, and can also be acidic, but not too extreme. If it is under the condition of peracid or high alkalinity, it will destroy the activity of flocculant and lead to unsatisfactory treatment effect.

Therefore, before using flocculant, the PH value of water should be detected first. If it does not meet the use standard, it is necessary to add an acid-base regulator to adjust it to the best range. If the PH value is too acidic or alkaline, we should pay attention to adjustment. Adjust to neutrality with alkaline reagent sodium hydroxide or acidic reagent.

If the PH value cannot be adjusted in some production processes, it can be diluted before adding chemicals. Or choose nonionic or cationic treatment in extreme environment, and still have good results. The modeling reference of polyacrylamide: /a/news/jjfa/349.html? 155 1 1475 10

Polyacrylamide is divided into anionic polyacrylamide, cationic polyacrylamide and nonionic polyacrylamide. When treating water with an effective PH range, the general situation is as follows:

1.The pH value is between 5- 14, and anionic polyacrylamide is used;

Number 2.2. The PH value is between 1-8, and nonionic polyacrylamide is used;

3. number three. The PH value is between 7- 14, and cationic polyacrylamide is used.