Technical discussion: Please talk about the various wastewater treatment agents you use and their functions
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This post was last edited by cdpulin on 2011-6-24 22:18. Sea friends, please share the various wastewater treatment agents you use and their functions I used PAC and PAM as coagulants!
This post was last edited and replied to by hesonchang214 on 2011-6-18 at 18:49. Reply 1# Yu Ru Yu Cheng: Our factory used to use PAC and PAM as well, but the results were not very good. Now we are using the M180—3 type flocculant, and the results are excellent!
Leather wastewater: Previously PAC was used, but now aluminum sulfate plus PAM is employed; the results are satisfactory, though it is important to control the dosage properly, as too much aluminum sulfate will cause the sludge to float to the surface.
Commonly used coagulants include polyaluminum chloride, polyferric chloride, and polyaluminum ferric chloride; the type of coagulant used varies depending on the characteristics of the wastewater. The commonly used coagulant is polyacrylamide, which comes in anionic, cationic, and neutral types; among these, the anionic type is the most widely used, and its molecular weight can vary.
Common water treatment coagulants are mainly aluminum salts, iron salts, or mixtures of aluminum and iron salts, such as PAC, alum, ferrous sulfate, polyferric sulfate, composite polyiron, polyaluminum-iron, bauxite, diatomite, etc. The coagulant is selected based on the properties of the wastewater and the parameters to be removed. The coagulant used is mainly PAM, that is, polyacrylamide. Anionic PAM is primarily used for wastewater treatment, while cationic PAM is mainly used for sludge treatment. The price varies significantly depending on the molecular weight.
This post was last edited by cdpulin on 2011-8-1 22:28 – Ferrous sulfate
There is a big difference in PAM prices; what’s the reason?
Reply to 7# mmainn: The reason is that PAM has different prices depending on its molecular weight. Low-molecular-weight PAMs, those with a molecular weight of 15 million or less, are prepared by using PAM with a molecular weight of around 20 million along with additives such as sodium chloride and gypsum.
Are you still using this forum? I would like to ask you something
The coagulants we use for wastewater treatment are typically polyferric sulfate and polyaluminum chloride. The coagulant aid is anionic polyacrylamide. Cationic polyacrylamide for sludge dewatering