Flocculation is a simple and efficient treatment from an economical and technical point of view. Flocculation can be described as an agent-induced aggregation of particles suspended in liquid media into larger particles called ‘flocs’. This destabilizing of a stable colloidal dispersion is induced by addition of a chemical known as flocculant. It is capable of removing substantial portion of organic content, and colloidal and dissolved substances from effluents by sedimentation, filtration, flotation, or biological conversion.