Solid Contact Clarifiers

HRSCC is mostly used in applications wherein a large variation in the inlet conditions has to be tolerated by the system. After coagulation andor flocculation in the sludge blanket units, the incoming water passes through the suspended layer of previously formed floc.
"Solids-contact" refers to units in which large volumes of sludge are circulated internally. The term also describes the sludge blanket unit and simply means that prior to and during sedimentation the chemically treated water contacts previously coagulated solids. Solids-contact, slurry pool units do not rely on filtration as in sludge blanket designs.