Primary Water Treatment process consists in removing large suspended organic solids.
This is usually accomplished by sedimentation in settling basins.
The liquid effluent from primary treatment, often contains a large amount of suspended organic materials, and has a high BOD ( Biological oxygen demand ) ( about 60 % of original)
Sometimes, the preliminary as well as primary water treatments are classified together,
under primary water treatment.
The organic solids, which are separated out in the sedimentation tanks ( in primary water treatment) are often stabilized by Anaerobic decomposition in a Digestion Tank or incinerated. the residue is used for land fills or soil conditioners.
No comments:
Post a Comment