Many users are confused when they hear PAC. PAC is actually a commonly used water purification agent; PAC is just its English name. Polyaluminum chloride, commonly known as a water purifier, is abbreviated as polyaluminum chloride and is also known as PAC in English. Polyaluminum chloride is a new type of purification material and inorganic polymer coagulant, also known as polyaluminum. It is a high-molecular-weight, highly charged inorganic polymer water treatment agent produced by the bridging action of hydroxide ions and the polymerization of multiple anions. Polyaluminum chloride also has the ability to sterilize, deodorize, degrease, remove turbidity, remove heavy metal salts, remove radioactive pollutants, and remove color, fluoride, aluminum, chromium, and phenol. Therefore, polyaluminum chloride is widely used in various wastewater purification applications.
Polyaluminum chloride is widely used in the treatment of industrial wastewater from printing and dyeing plants, paper mills, electroplating plants, circuit board factories, food factories, pharmaceutical factories, fertilizer plants, and pesticide plants, as well as for phosphorus removal in domestic sewage treatment plants and tap water treatment. When it comes to removing heavy metals from wastewater, PAC flocculants significantly improve dye decolorization, generally outperforming inorganic flocculants. The addition of PAC causes dye molecules to form fine flocs due to double-layer compression or neutralization, while the addition of PAM allows anionic organic polymer molecules to form coarse flocs, primarily through the bridging effect of their long molecular chains, under the action of destabilizers. Furthermore, the side chains of PAM molecules contain numerous amide groups, which can form ionic bonds with the -SON groups in dye molecules, thereby reducing the solubility of the organic flocculant in water and promoting floc formation and precipitation.
The role of PAC in phosphorus removal:
1. After being added to phosphorus-containing wastewater, PAC hydrolyzes to form trivalent aluminum ions. These ions react with soluble phosphates in the wastewater to form insoluble phosphate precipitates, thereby removing phosphate ions from the wastewater.
2. After decomposing in the wastewater, PAC's coagulation effect compresses the surface charge layer of phosphate ions, creating adsorption and bridging, allowing phosphate ions to rapidly coagulate with other organic pollutants in the wastewater, forming flocculent precipitates.
3. Fine suspended solids generated by the addition of the phosphorus removal agent grow and coarsen through the sediment trapping mechanism and adsorption and bridging. These particles then coagulate, aggregate, and flocculate into larger particles that settle to the bottom layer. Solid-liquid separation is then performed, and the supernatant is discharged, achieving phosphorus removal.
The main products of flocculant manufacturer Xinhuan Water Treatment are:
White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polyferric aluminium chloride and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：+8619003830067 Email：joanna@xhwtm.com Contact:Joanna
