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. 2020 Mar 2;17(5):1617.
doi: 10.3390/ijerph17051617.

Suitability of SBR for Wastewater Treatment and Reuse: Pilot-Scale Reactor Operated in Different Anoxic Conditions

Omar Alagha  1 , Ahmed Allazem  2 , Alaadin A Bukhari  3 , Ismail Anil  1 , Nuhu Dalhat Mu'azu  1
Affiliations

Suitability of SBR for Wastewater Treatment and Reuse: Pilot-Scale Reactor Operated in Different Anoxic Conditions

Omar Alagha et al. Int J Environ Res Public Health. .

Abstract

The present study investigates the performance of a pilot-scale Sequencing Batch Reactor (SBR) process for the treatment of wastewater quality parameters, including turbidity, total suspended solids (TSS), total solids (TS), nitrogen (ammonia (NH3-N), nitrite (NO2-), and nitrate (NO3-), phosphate (PO43-), the chemical oxygen demand (COD), and the 5-day biological oxygen demand (BOD5), from municipal wastewater. Two scenarios, namely, pre-anoxic denitrification and post-anoxic denitrification, were investigated to examine the performance of a pilot-scale SBR on the wastewater quality parameters, particularly the nitrogen removal. The correlation statistic was applied to explain the effects of operational parameters on the performance of the SBR system. The results revealed that the post-anoxic denitrification scenario was more efficient for higher qualify effluent than the first scenario. The effluent concentrations of the targeted wastewater quality parameters obtained for the proposed SBR system were below those of the local standards, while its performance was better than that of the North Sewage Treatment Plant, Dharan, Eastern province, Kingdom of Saudi Arabia (KSA), in terms of the BOD5, COD, TN, and PO43- treatment efficiencies. These results indicated the suitability of SBR technology for wastewater treatment in remote areas in the KSA, with a high potential of reusability for sustainable wastewater management.

Keywords: arid regions; domestic wastewater treatment; nitrogen and phosphorus removal; pilot-scale treatment; sequencing batch reactor; sustainable wastewater management.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic diagram of the pilot-scale sequencing batch reactor (SBR).
Figure 2
Figure 2
Variations of (a) nitrogen (NH3–N), (b) nitrate-nitrogen (NO3–N), (c) total nitrogen (TN), and (d) pH.
Figure 3
Figure 3
Variations and removal efficiencies of (a) the chemical oxygen demand (COD), (b) the 5-day biological oxygen demand (BOD5), and (c) phosphate (PO43−).
Figure 4
Figure 4
Variations and removal efficiencies of (a) turbidity, (b) total suspended solids (TSS), and (c) total solids (TS).
See this image and copyright information in PMC

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