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Another essential chemical in water treatment is coagulants, such as aluminum sulfate (alum) and ferric chloride. These compounds are used to facilitate the coagulation process, where small particles suspended in water clump together to form larger particles called flocs. This process improves the efficiency of the subsequent sedimentation and filtration steps, allowing for clearer and cleaner water. Coagulation is especially important in treating surface water, which often contains a variety of organic and inorganic impurities.


Following coagulation, sedimentation typically occurs. This is where the heavier flocs settle to the bottom of the treatment tank, allowing clearer water to be siphoned off from the top. To further enhance the removal of pathogens and dissolved substances, chlorination is frequently employed. Chlorine is a powerful disinfectant that effectively kills bacteria, viruses, and other microorganisms that may be present in water. However, it is crucial to control the concentration of chlorine, as excessive amounts can lead to the formation of harmful byproducts.


5. Oxidizing and Non-Oxidizing Biocides


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Children: The daily intake of vitamin C for children is lower than that of adults. For children aged 1-3 years, the recommended amount is 15 mg, while children aged 4-8 years should aim for 25 mg per day. Adolescents between 9-13 years old can follow the adult guidelines.

Maintaining the right pH level is essential for the effective operation of cooling towers. A pH value that is too low or too high can lead to increased corrosion or scaling. pH control chemicals, such as sodium hydroxide or sulfuric acid, are used to adjust and stabilize the pH, ensuring it remains within the optimal range. Regular monitoring of pH levels is crucial, and automated dosing systems are often implemented to maintain pH balance efficiently.


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