Cationic polyacrylamide sludge dewatering principle
Cationic polyacrylamide in the sludge dewatering time, the choice should pay attention to the problem: According to the nature of the product can be used in the corresponding grades, can be effective in the sludge into the filter before the gravity sludge dewatering. Dehydration, resulting in floc large, non-stick filter cloth, when the filter does not disperse, with less, high dehydration efficiency, mud cake moisture content of 80% or less.
Sewage and organic wastewater treatment: the product in acidic or alkaline media are showing positive electricity, so that the suspension of suspended solids in sewage sewage flocculation sedimentation, clarification is extremely effective, such as alcohol plant wastewater, brewery wastewater , The use of cationic polyacrylamide is higher than that of using anionic polyacrylamide, nonionic polyacrylamide or inorganic salt, and the effect of cationic polyacrylamide is higher than that of anionic polyacrylamide, nonionic polyacrylamide or inorganic salt Several times or several times, because such waste water is generally with a negative charge.
Cationic polyacrylamide molecular weight is about 12 million, the normal detection is 600-1000 million molecular weight, cationic polyacrylamide key or depends on the level of cationic, molecular weight is not the most important factor affecting flocculation.
The degree of hydrolysis of polyacrylamide is that the weak ions in the polyacrylamide solution are combined with water to form weakly alkaline or weakly acidic, or the ability to form weak acid and weak base in polyacrylamide aqueous solution is strong weak. For strong acid and alkali, the greater the ionization of the corresponding acid and alkali is stronger, and their degree of hydrolysis is weaker. For some soluble polyacrylamides, the larger the ionization is, the more ions are ionized, and the degree of hydrolysis is weaker. In general, the degree of ionization, the weaker the degree of hydrolysis, on the contrary, the degree of ionization is small, the greater the degree of hydrolysis.