Author/Authors :
Ali Khan، Abid نويسنده 1Department of Civil Engineering, IIT Roorkee, Roorkee, India 2Royal HaskoningDHV, New Delhi, India , , Zahid Gaur، Rubia نويسنده School of Environment and Natural Resources, Doon University, Dehradun, India , , Mehrotra، Indu نويسنده , , Diamantis، Vasileios نويسنده Department of Environmental Engineering, Democritus University of Thrace, Xanthi, Greece , , Lew، Beni نويسنده The Volcani Center, Institute of Agriculture Engineering, Bet Dagan 50250, Israel Department of Civil Engineering, Ariel University, Ariel 40700, Israel , , Ahmad Kazmi، Absar نويسنده 1Department of Civil Engineering, IIT Roorkee, Roorkee, India ,
Abstract :
This paper present the experiences gained from the study of ten up flow anaerobic sludge blanket (UASB) based
sewage treatment plants (STPs) of different cities of India. Presently 37 UASB based STPs were under operation and
about 06 UASB based STPs are under construction and commissioning phase at different towns. The nature of
sewage significantly varied at each STP. Two STP were receiving sewage with high sulfate and heavy metals due to
the mixing of industrial waste. The treatment performance of all UASB reactors in terms of BOD, COD and TSS were
observed between 55 to 70% respectively. The post treatment units down flow hanging sponge (DHS) and
Aeration followed by activated sludge process (ASP) at two STPs were performing well and enable to achieve the
required disposal standards. Results indicate the effluent quality in terms of BOD and SS were less than 30 and
50 mg/L and well below the discharging standards.
