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Modernization of Existing 27 MLD Sewage Treatment Plant at Brahmpuri, Jaipur, India: A Model Study

Author Affiliations

  • 1S.S. Jain Subodh PG (Autonomous College) Jaipur, Raj., INDIA
  • 2RUIDP, JLN Marg, Jaipur, Raj., INDIA

Res.J.chem.sci., Volume 5, Issue (4), Pages 49-52, April,18 (2015)


The renovation and modernization work for 27 MLD STP at Brahmpuri, Jaipur was taken up after it becoming defunct in year 2000-2001. Besides renovating the civil structures, modern day state of the art and energy efficient mechanical and electrical machineries were installed with man-machine interface for efficient and effective operation and maintenance of the treatment process. The treatment process is based on extended aeration with introduction of energy efficient fine bubble diffused aeration system instead of outdated and energy intensive surface aerators. Sludge is being handled in aerobic digesters. Digested sludge is pumped to centrifuge unit where it is converted to semi solid form having consistency of approximately 22% solids to be used as manure for agriculture purposes by nearby farmers. The STP was commissioned after renovation and modernization work with the full plant capacity flow of 27 MLD. The main aim of modernization was to take care of effective removal of inorganic material as primary treatment unit which was a major reason for the plant to be defunct due to carrying over of inorganic to the reactor tank and to use energy efficient machinery for energy saving. The power saving is mainly achieved through the running of air blowers on variable frequency drive controlled by the level of dissolved oxygen in the reactor.


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