Sewage Treatment Plant By Isr Industries

Sewage is actually the waste liquid that is disposed off through the sewers which includes waste water from toilets,baths,kitchens etc..Widely used methods to treat the sewage generally involves three steps:
a PrimaryTreatment(Mechanical)
a SecondaryTreatment(Biological)
a Tertiary (or Advanced) treatment

Primary Treatment consists of screening to Oil & Grease trap. This process is often called as a Mechanical Treatmenta and is designed to remove floating particles, Oil & Grease and Suspended Solids from raw sewage.
Secondary Treatment involves removing of organic matters that escapes primary treatment. It is performed by microbes / indigenous water borne micro-organisms which consumes organic matter as food for their growth & reproduction. The Secondary or Biological treatment requires additional Settling tanks to remove more suspended solids. This can achieve upto 85% removal of Suspended Solids & BOD through well managed plant. Treated Sewage from secondary treatment needs to be disinfected before it is discharged to Tertiary treatment.
Tertiary Treatment is the advanced treatment beyond secondary. Tertiary treatment of sewage can produce an output quality of treated effluent almost similar to drinking water quality. This may involve high technological expertise with expensive process utilization.
To achieve sustainable improvement in the quality of the sewage water