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Coagulants, such as alum (aluminum sulfate) and ferric chloride, are also employed in sewage treatment. These chemicals assist in the removal of suspended solids, colloidal particles, and turbidity from wastewater. When added to the treatment process, coagulants promote the aggregation of small particles into larger flocs, which can be more easily removed through sedimentation. This process is particularly important in primary treatment phases, where physical separation of solids occurs.
chemical used in sewage treatment plant

When the patient is fully under the influence of sevoflurane, they are in a state of unconsciousness. At this point, they are completely unaware of their surroundings and the ongoing medical procedure. This state ensures that the patient does not experience any pain or discomfort during surgery. It’s important to note that the patient’s muscles are relaxed, allowing the surgical team to perform procedures without encountering resistance.
Chemical treatment processes involve the addition of chemicals to water or wastewater to facilitate the removal of contaminants. One of the most widely used chemical treatments is chlorination, which involves adding chlorine or chlorine-based compounds to disinfect water by killing pathogens. However, this method must be carefully managed, as excessive chlorine can lead to the formation of harmful by-products.
physical chemical treatment of water and wastewater pdf
