Sewage Treatment


 
 
Concept Explanation
 

Sewage Treatment

The industrial and municipal waste waters are treated in Effluent Treatment Plants before disposing them off into water bodies. This is done is three parts :

Primary Treatment

Separation of large debris by sedimentation in tanks.

Secondary Treatment :

The waste water is pumped into  oxidation ponds where micro-  organisms oxidise the organic matter releasing CO_2, and a solid precipitated  material sludge is produced that can be be used as manure.

Tertiary Treatment :

It involves removal of dissolved chemicals, metals or even pathogens and then  the waste water is discharged into natural waters or is used for irrigation.

                                       

 
 
 


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