a chemical used for purification of water

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1. Scale Inhibitors These chemicals prevent scale formation by modifying the crystallization process of minerals in the water. Common scale inhibitors include phosphonates and polyacrylic acids, which help to keep calcium, magnesium, and other minerals in solution.


2. Disinfectants Post-treatment, it is crucial to disinfect the treated effluent to eliminate harmful pathogens. Chlorine, ozone, and ultraviolet (UV) light are commonly used disinfectants in STPs. Chlorination, while effective, requires careful management due to the formation of potentially harmful by-products. Conversely, UV disinfection offers a chemical-free alternative, reducing the risk of toxic residue but necessitating thorough filtration of water before application.


The benefits of using PAM as a flocculant are manifold. First and foremost, it is effective at low concentrations, making it a cost-efficient solution for large-scale applications. Moreover, PAM is biodegradable, and its environmental impact is considerably lower than that of traditional flocculants, such as alum or iron-based coagulants. This characteristic makes it an attractive alternative, especially in regions where environmental regulations are becoming more stringent.


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