What is the function of a clarifier in a wastewater treatment process?

The function of a clarifier in a wastewater treatment process is to remove solids from wastewater through sedimentation. This step is crucial in the treatment process, as it allows heavier particles, such as sediments, to settle to the bottom of the clarifier, forming a sludge layer. The clear water above the settled solids can then proceed to further stages of treatment or be discharged, depending on the treatment goals. This process enhances the overall efficiency of the wastewater treatment system by reducing the load of suspended solids, which can pose challenges for subsequent treatment steps, such as filtration or biological treatment.

Alternatives like increasing oxygen levels or mixing water with chemicals relate to different components of the treatment process but do not define the primary role of a clarifier. While additional filtration may also occur downstream, it is not the principal function of the clarifier. The sedimentation function is fundamental in maintaining water quality and ensuring that subsequent processes can function effectively.