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Sewage Treatment Plant

CAPACITY EXPANSION FROM 8.5 MLD STP (ACTIVATED SLUDGE TECHNOLOGY) TO 16 MLD STP (PVA GEL TECHNOLOGY) WITHOUT EXTRA SPACE.

 

BACKGROUND

A sewage treatment plant of capacity of 8.5 MLD based on the Activated sludge process was completed and commissioned in Municipal corporation, Vadodara. Today sewage generation capacity is increased in the zone and the STP is overloaded. A total capacity of 16 MLD STP is required as per current demand. Hence a 7.5 MLD expansion is required.

 

CHALLENGE

As the STP is situated in the populated area of city, it was difficult to allocate more space for expansion. Hence the expansion of 7.5 MLD in existing 8.5 MLD STP should be done in existing infrastructure only.

 

SOLUTION

As the space is the major issue in this project, all the conventional technologies like MBBR & SBR cannot deliver the result. While MBR is economically not viable. PVA Gel based process is the only technology that can deliver the desired output considering the space & economic constraint.

Summary

The plant will operate on 16 MLD sewage load while it was 8.5 MLD previously. Using the advanced technology of PVA Gel any old plant can be enhanced to increase capacity & quality of treatment. The cost of increasing 7.5 MLD capacity in existing plant is many times lesser than constructing a totally a new 7.5 MLD STP.
The reare several old STP in India working an old technologies and as the population grows these STP will be overloaded soon. Not only these STP overloaded, the treatment quality does not comply with latest pollution control board set norms. Hence by using this technology an old STP can upgraded to increase capacity & improve treatment quality and all that need ed is minor civil work in existing STP.
Total area required by an Activated Sludge process based STP would be 3850 m2, while we have completed in 250 m2.