Evaluation of Effective Operational Cycle Time and Bioprocess Parameters in a Sequential Batch Reactor for Efficient Organic and Nutrient Removal from Domestic Sewage

Iranica Journal of Energy and Environment, 6(4), 2015.

7 Pages Posted: 25 May 2017

See all articles by Sandip Magdum

Sandip Magdum

R.D. Aga Research, Technology and Innovation Centre, Thermax Ltd.

Siva Varigala

Thermax Ltd.

Yogesh Patil

North Maharashtra University

Gauri Minde

Thermax Ltd.

Janardhan Bornare

Thermax Ltd.

V. Kalyanraman

Thermax Ltd.

Date Written: December 24, 2015

Abstract

Anaerobic, anoxic and aerobic environment can be simulated in the single stage sequential batch reactor (SBR) . Various design conditions viz., combinations of different phase time and different cycle time, hydraulic residence time (HRT), substrate loading rate, sludge age (SRT) and aeration time were analyzed for optimum biological treatment. The pilot runs were evaluated with the design conditions of food/microbe ratio (F/M) 0.2 per day and MLSS of 4950 mg/L. For the given design conditions 4, 5 and 6 hours cycle lengths were analyzed for their efficient performance with 30-33% of decant volume for sewage containing C:N:P of 100:8:2. Studies on 4 hours cycle resulted in the maximum overall organic and nutrient removal efficiency at SRT of 26 days and HRT of 12 hours. Efficient sequencing of reactions with respect to the simulated biological conditions in the pilot plant studies resulted in better oxygen recovery and low power consumption. Also, the enforced biological selector phase condition resulted in high microbial reaction rates for organic and nutrient removal. The removal efficiencies with 4 hours cycle time of COD, nitrogen (NH4–N) and phosphate (PO4–P) were 90, 92 and 78%, respectively. This study offers a potential option of low HRT nutrient removal SBR process.

Keywords: Cycle time, Organic Loading rate, Nitrogen removal, Phosphate removal, Wastewater treatment, sequential batch reactor

Suggested Citation

Magdum, Sandip and Varigala, Siva and Patil, Yogesh and Minde, Gauri and Bornare, Janardhan and Kalyanraman, V., Evaluation of Effective Operational Cycle Time and Bioprocess Parameters in a Sequential Batch Reactor for Efficient Organic and Nutrient Removal from Domestic Sewage (December 24, 2015). Iranica Journal of Energy and Environment, 6(4), 2015.. Available at SSRN: https://ssrn.com/abstract=2973147

Sandip Magdum (Contact Author)

R.D. Aga Research, Technology and Innovation Centre, Thermax Ltd. ( email )

Pune, 411019
India

Siva Varigala

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

Yogesh Patil

North Maharashtra University ( email )

Post Box No 80
Umavi Nagar
Jalgaon, Maharashtra 425001
India

Gauri Minde

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

Janardhan Bornare

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

V. Kalyanraman

Thermax Ltd. ( email )

14 Mumbai-Pune Road
Pune, 411 003
India

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