The pH of water is another important quality parameter that can significantly impact its suitability for various uses. Water that is too acidic or alkaline may corrode piping systems or inhibit the effectiveness of disinfectants. pH adjusters, such as sodium hydroxide or hydrochloric acid, are used to fine-tune the pH levels in water treatment processes. Achieving an optimal pH not only ensures the effectiveness of other chemicals but also protects infrastructure and enhances overall water quality.
During the primary treatment, the focus is on physically removing large solids and floating debris from the sewage. Chemical coagulants, such as aluminum sulfate or ferric chloride, are often added to this process. These coagulants cause small particles to agglomerate into larger clumps, which can then be easily separated from the wastewater by sedimentation. This stage significantly reduces the load of suspended solids, paving the way for more efficient secondary treatment.