200 KLD CAMUS-SBT Based STP at Vadodara Airport

Scale of service


Area of installation (Sqm)

450 sqm

Year of Installation

Sept. 2016

Capital cost

Rs. 116 Lakh


Vadodara Airport

Operational & Maintenance cost

Rs. 18 Lakh

Funding Agency

Airport Authority of India

Design Capacity

200 KLD
500 KLD Ultimate



The STP was proposed to treat the sewage generated considering the average passenger’s footfall per day is 5000 people and also for the Airport Staff.


RST:- Raw Sewage Tank, CT1:- Collection Tank 1, CT2:- Collection Tank 2, TWT:- Treated Water Tank, BM1:- Bio Mound 1, BM2:- Bio Mound 2

The sewage from the facility after Preliminary Screening gets collected to Raw Sewage Tank (RST) for collection and equalization. The raw water is pumped to Bio Mound 1 (BM1) via the piping network in BM1 which enables equal distribution of sewage throughout the reactor surface area. The sewage distributed in BM1 gets trickled down by gravity in Collection Tank 1 (CT1). Similarly, the water in CT1 gets pumped to Bio Mound 2 (BM2) further treated and collected in Collection Tank 2 (CT2). The water in the CT2 Tank is the treated water and hence CT2 is named as Treated Water Tank (TWT) also.


From L-R:- RST,CT1, CT2/TWT

Since three year of Operation & Maintenance, Plant has been able to achieve sustained results with treatment efficiency in terms of TSS (>85%), BOD (>85%) & COD (>85%). The treated water is odour-free and colour free.


Senior Manager (Engg-Civil)
Airport Director Airports Authority of India, Civil Aerodrome, Harni Road Vadodara-390022 (Gujarat)

For Vision Earthcare Pvt. Ltd.

Dr Chandrashekar Shankar
Case study prepared by:
Mohit Hariya (+91 7304540858) Maintenance Manager