The positive charge on the anionic polyacrylamide molecular chain neutralizes the negative charge in the sludge colloidal particles, which can accelerate the sludge flocculation speed. At the same time, the long molecular chain is used to wind the sludge particles together, which is mainly used in the anionic polyacrylamide compression double layer and adsorption bridge.
Anionic polyacrylamide sludge dehydrating agent is often used in the process of treating industrial wastewater backward, while anionic polyacrylamide sludge dehydrating agent is often used in the process of sludge dehydrating. According to the different properties of sludge, different ionic anionic polyacrylamide can be used for dehydration.
Due to the high ionic degree of anionic polyacrylamide sludge dehydrating agent, it can be divided into three types: weak cation type, medium positive ion type and strong cation type. High ionic anionic polyacrylamide sludge dehydrating agent has more positive charged ions, which can achieve higher adsorption stability effect, but the molecular weight of high ionic polyacrylamide is generally not too high. Therefore, its adsorption stability is greatly reduced. When customers need to use cationic plate for sludge treatment, it is best to conduct a preliminary trial, and then determine what kind of ionic cationic plate needs to be used. On the one hand, it can reduce the cost of use, on the other hand, it can improve the efficiency of sludge treatment.
Anionic polyacrylamide as sludge dehydrating agent used in polyacrylamide hydrolysis can be divided into natural drying and mechanical dehydration. The two dehydration methods of sludge have different emphasis, but they all need to use polyacrylamide dehydration. Natural drying and dehydration refers to the sludge placed in a drying tank, through evaporation, clear liquid overflow, penetration and other processes to dehydrate it, so that it is easy to produce odor, thereby causing disease.
