Introduction

There are many types of sewage produced by human production and life, and the ionic models of polyacrylamide used in the treatment of different types of sewage are also different, which depends on spec…

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There are many types of sewage produced by human production and life, and the ionic models of polyacrylamide used in the treatment of different types of sewage are also different, which depends on specific situations.

1. Sludge is an inevitable product in sewage treatment. First of all, we should understand the source, nature, composition and solid content of sludge. According to the different main components contained in sludge, sludge can be divided into organic sludge and inorganic sludge. Generally speaking, cationic polyacrylamide is used to treat organic sludge, and anionic polyacrylamide is used to treat inorganic sludge. Cationic polyacrylamide is not recommended when it is very alkaline, and anionic polyacrylamide is not recommended when it is very acidic. When the solid content of the sludge is high, the use amount of polyacrylamide is usually large.

2. Selection of ionic degree of cationic polyacrylamide: The key to select ionic degree depends on (1) the size of the floc (2) the strength of the floc (water content).

3. Mixing of polyacrylamide and sludge: The viscosity of polyacrylamide solution must be appropriate, and it can be fully mixed with sludge under the existing equipment conditions. Whether the two are mixed evenly is the key factor for success. The viscosity of cationic polyacrylamide solution is related to its molecular weight and formulation concentration.

4. Dissolution of cationic polyacrylamide: Only when the dissolution is good can the flocculation effect be fully exerted. Sometimes it is necessary to speed up the dissolution rate, in this case, consider increasing the concentration of the polyacrylamide solution.

Because the production cost of PAM itself is high, it also greatly increases the cost of use when applied to the water treatment industry. However, the dosage of PAM is small, the benefit is high, and the effect can be generated quickly, which can not only help customers improve the efficiency of sludge and sewage treatment, but also reduce their cost of use.