What is the function of flocculator in the typical water treatment scheme for surface water ?
1
To rapid dispersion of chemical coagulant(s) to encourage destabilization of colloids
2
To permit the settlement of chemical ‘flocs’ along with colloidal particles
3
To provide for gentle mixing of the destabilized colloids to promote agglomeration of colloids into large easily settleable flocs
4
To remove the flocs and colloids which escape from the settlement in the secondary sedimentation tank