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Appraisal of suspended growth process for treatment of mixture of simulated petroleum, textile, domestic, agriculture and pharmaceutical wastewater

Egbuikwem, Precious N., Naz, Iffat and Saroj, Devendra P. (2019) Appraisal of suspended growth process for treatment of mixture of simulated petroleum, textile, domestic, agriculture and pharmaceutical wastewater Environmental Technology. pp. 1-16.

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Abstract

The unrestricted discharge of domestic and industrial wastewaters along with agricultural runoff water into the environment as mixed-wastewater pose serious threat to freshwater resources in many countries. Mixed-wastewater pollution is a common phenomenon in the developing countries as the technologies to treat the individual waste streams at source are lacking due to high operational and maintenance costs. Therefore, the need to explore the potential of the suspended growth process which is a well-established process technology for biological wastewater treatment is the focus of this paper. Different wastewater constituents: representing domestic, pharmaceutical, textile, petroleum, and agricultural runoff were synthesized as a representative of mixed-wastewater and treated in two semi-continuous bioreactors (R1 & R2) operated at constant operating conditions, namely MLSS (mg/L): 4640-R1, 4440-R2, SRT: 21-d, HRT: 48–72 h, and uncontrolled pH. The system attained stable condition in day 97, with average COD, BOD and TSS reduction as 84.5%, 86.2%, and 72.2% for R1; and 85.1%, 87.9%, and 75.1% for R2, respectively. Phosphate removal on average was by 74.3% in R1 and 76.6% in R2, while average nitrification achieved in systems 1 and 2 were 56.8% and 54.7%, respectively. The biological treatment system has shown potential for improving the quality of mixed-wastewater to the state where reuse may be considered and tertiary treatment can be employed to polish the effluent quality.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Egbuikwem, Precious N.p.egbuikwem@surrey.ac.uk
Naz, Iffat
Saroj, Devendra P.D.Saroj@surrey.ac.uk
Date : 16 May 2019
DOI : 10.1080/09593330.2019.1609097
Copyright Disclaimer : © 2019 Taylor & Francis
Uncontrolled Keywords : Mixed-wastewater treatment; Suspended growth process; Industrial wastewater; Domestic wastewater; Agricultural runoff
Depositing User : Clive Harris
Date Deposited : 17 May 2019 14:12
Last Modified : 01 May 2020 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/851858

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