Description
What is POLYAMMONIUM CHLORIDE?
Polyaluminum chloride, often abbreviated as PAC, is a chemical compound used primarily in water treatment and purification processes. It is a coagulant and flocculant, which means it is added to water to help remove impurities and particles.
Polyaluminum chloride is typically a yellowish to brownish liquid, but it can also be found in solid form. It is derived from aluminum-containing raw materials and is produced by a variety of methods. PAC works by destabilizing the colloidal particles and suspended materials in water, causing them to clump together (flocculate) and settle out. This makes it easier to separate and remove impurities from the water.
Polyaluminum chloride is used in various applications, including:
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Water Treatment: PAC is widely used in municipal and industrial water treatment plants to clarify and purify water by removing suspended solids, organic matter, and some heavy metals.
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Wastewater Treatment: It is used to treat wastewater and industrial effluents, aiding in the removal of pollutants before discharge into the environment.
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Paper and Pulp Industry: PAC is employed in the paper and pulp industry as a retention and drainage aid during the papermaking process.
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Textile Industry: It can be used to improve the quality of wastewater from textile dyeing and finishing processes.
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Mining and Mineral Processing: In mining, it can be used for the clarification of process water and the removal of impurities from ore and mineral slurries.
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Oil and Gas Industry: PAC is sometimes used in the treatment of produced water from oil and gas extraction operations.
It’s worth noting that there are various formulations and types of polyaluminum chloride, and the specific type used depends on the application and the water quality requirements. PAC is favored for its effectiveness in water treatment and its lower environmental impact compared to some traditional coagulants like aluminum sulfate (alum). However, like all chemicals used in water treatment, it must be handled and dosed with care to ensure safe and effective treatment processes.
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