gold ironing board cover_round tablecloth with umbrella hole
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

Following the removal of solids, disinfection is typically employed to eliminate any remaining pathogens. Common disinfectants include chlorine, ozone, and ultraviolet (UV) light. Each method has its own advantages and disadvantages; for instance, while chlorine is effective and inexpensive, it can produce harmful disinfection byproducts. In contrast, UV disinfection is environmentally friendly and poses no risk of residual contaminants, but it requires careful monitoring to ensure effectiveness.
chemical treatment system
