Abstract
The present study identifies the hydraulic efficiency of a novel onsite sanitation system at variable hydraulic shock loading conditions. The system consisted of three chambers, each working as an up-flow anaerobic bioreactor, accommodated within a single unit. The hydraulic characteristics were identified with the help of residence time distribution (RTD) analysis by step feeding of lithium chloride (LiCl) solution into the system. The experiments were run at variable hydraulic loading conditions at different peak flow factors (PFF) of 1, 2, 4 and 6 while maintaining 24-h hydraulic retention time. As revealed in the RTD analysis, the biofilm reactor achieved a very good hydraulic efficiency that varied from 0.76 to 0.81 at PFF 1, 2 and 4. Although in the case of PFF6, it was comparatively low. It was noted that the dispersion number was always below 0.2 at variable hydraulic shock loading conditions under different PFFs, which indicated that the reactor behaved perfectly between mixed-flow and plug-flow reactor. The system was also able to achieve good pollutant removal efficiency for chemical oxygen demand (COD) and total suspended solids (TSS) under all PFFs, which was more than 68 and 75%, respectively.
Funding source: Department of Science and Technology, Government of Rajasthan
Award Identifier / Grant number: F8(9) DST/SSD/2016/Part-1/3809
Acknowledgement
We are also grateful to the STP team (Aquacare Solution Enviro Engineers) of Manipal University Jaipur for their continuous support.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This research project is financially sanctioned by the Department of Science and Technology, Government of Rajasthan, India, through Project file no. F8(9) DST/SSD/2016/Part-1/3809.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
Alaerts, G. J., S. Veenstra, M. Bentvelsen, and L. A. Van Duijl. 1993. “Feasibility of Anaerobic Sewage Treatment in Sanitation Strategies in Developing Countries.” Water Science and Technology 27: 179–86, https://doi.org/10.2166/wst.1993.0042.Search in Google Scholar
Anderson, G. K., C. M. M. Campos, C. A. L. Chernicharo, and L. C. Smith. 1991. “Evaluation of the Inhibitory Effects of Lithium when Used as a Tracer for Anaerobic Digesters.” Water Research 25 (7): 755–60, https://doi.org/10.1016/0043-1354(91)90154-I.Search in Google Scholar
APHA. 1995. American Public Health Association - Standard Methods for the Examination of Water and Wastewater. Washington, DC: American Public Health Association (APHA), the American Water Works Association (AWWA), and the Water Environment Federation (WEF).Search in Google Scholar
Cullimore, D. R., and T. Viraraghavan. 1994. “Microbiological Aspects of Anaerobic Filter Treatment of Septic Tank Effluent at Low Temperatures.” Environmental Technology 15 (2): 165–73, https://doi.org/10.1080/09593339409385416.Search in Google Scholar
Ducoste, J., K. Carlson, W. Bellamy, and K. Carlson. 2001. “The Integrated Disinfection Design Framework Approach to Reactor Hydraulics Characterization Combined CFD and Biokinetic Modelling View Project the Integrated Disinfection Design Framework Approach to Reactor Hydraulics Characterization.” Journal of Water Supply: Research & Technology - Aqua 50 (4): 245–61, https://doi.org/10.2166/aqua.2001.0021.Search in Google Scholar
Grobicki, A., and D. C. Stuckey. 1992. “Hydrodynamic Characteristics of the Anaerobic Baffled Reactor.” Water Research 26 (3): 371–8, https://doi.org/10.1016/0043-1354(92)90034-2.Search in Google Scholar
Hu, X., A. D. Ilgun, A. Passalacqua, R. O. Fox, F. Bertola, M. Milosevic, and F. Visscher. 2021. “CFD Simulations of Stirred-Tank Reactors for Gasliquid and Gas-Liquid-Solid Systems Using OpenFOAM®.” International Journal of Chemical Reactor Engineering 19 (2): 193–207, https://doi.org/10.1515/ijcre-2019-0229.Search in Google Scholar
IS: 2470-(Part-1). 1985. Code of Practice for Installation of Septic Tanks: Part-1, Design Criteria and Construction (Second Revision). New Delhi: Bureau of Indian Standards.Search in Google Scholar
Ji, J. Y., K. Zheng, Y. J. Xing, and P. Zheng. 2012. “Hydraulic Characteristics and Their Effects on Working Performance of Compartmentalized Anaerobic Reactor.” Bioresource Technology 116: 47–52, https://doi.org/10.1016/j.biortech.2012.04.026.Search in Google Scholar PubMed
Levenspiel, O. 1972. Chemical Reaction Engineering. New York: John Wiley & Sons. Inc..Search in Google Scholar
Li, S., J. Nan, and F. Gao. 2016. “Hydraulic Characteristics and Performance Modeling of a Modified Anaerobic Baffled Reactor (MABR).” Chemical Engineering Journal 284: 85–92, https://doi.org/10.1016/j.cej.2015.08.129.Search in Google Scholar
Mansouri, Y., A. A. Zinatizadeh, P. Mohammadi, M. Irandoust, A. Akhbari, and R. Davoodi. 2012. “Hydraulic Characteristics Analysis of an Anaerobic Rotatory Biological Contactor (AnRBC) Using Tracer Experiments and Response Surface Methodology (RSM).” Korean Journal of Chemical Engineering 29 (7): 891–902, https://doi.org/10.1007/s11814-011-0269-0.Search in Google Scholar
Metcalf, L., and H. P. Eddy. 2003. Wastewater Engineering: Treatment and Reuse, 4th ed. New York: McGraw-Hill.Search in Google Scholar
Morgan-Sagastume, J. M., B. Jiménez, and A. Noyola. 1997. “Tracer Studies in a Laboratory and Pilot Scale Uasb Reactor.” Environmental Technology 18 (8): 817–25, https://doi.org/10.1080/09593331808616600.Search in Google Scholar
Persson, J., N. L. G. Somes, and T. H. F. Wong. 1999. “Hydraulics Efficiency of Constructed Wetlands and Ponds.” Water Science and Technology 40: 291–300, https://doi.org/10.1016/S0273-1223(99)00448-5.Search in Google Scholar
Renuka, R., S. Mariraj Mohan, and S. Amal Raj. 2016. “Hydrodynamic Behaviour and its Effects on the Treatment Performance of Panelled Anaerobic Baffle-Cum Filter Reactor.” International Journal of Environmental Science and Technology 13 (1): 307–18, https://doi.org/10.1007/s13762-015-0824-z.Search in Google Scholar
Sarathai, Y., T. Koottatep, and A. Morel. 2010. “Hydraulic Characteristics of an Anaerobic Baffled Reactor as Onsite Wastewater Treatment System.” Journal of Environmental Sciences 22 (9): 1319–26, https://doi.org/10.1016/S1001-0742(09)60257-6.Search in Google Scholar
Sharma, M. K., A. Khursheed, and A. A. Kazmi. 2014. “Modified Septic Tank-Anaerobic Filter Unit as a Two-Stage Onsite Domestic Wastewater Treatment System.” Environmental Technology 35 (17): 2183–93, https://doi.org/10.1080/09593330.2014.896950.Search in Google Scholar
Sharma, M. K., and A. A. Kazmi. 2015. “Effect of Physical Property of Supporting Media and Variable Hydraulic Loading on Hydraulic Characteristics of Advanced Onsite Wastewater Treatment System.” Environmental Technology 36 (11): 1414–22, https://doi.org/10.1080/09593330.2014.992480.Search in Google Scholar
Singh, S. P., P. Yadav, C. Kumar, M. K. Sharma, and R. C. Gaur. 2021. “Performance of an Integrated Settler Based Anaerobic Biofilm Reactor as Onsite Sanitation System.” IETE Journal of Research, https://doi.org/10.1080/03772063.2021.1874840.Search in Google Scholar
Thackston, E. L., F. D. Shields, and P. R. Schroeder. 1987. “Residence Time Distributions of Shallow Basins.” Journal of Environmental Engineering 113 (6): 1319–32, https://doi.org/10.1061/(ASCE)0733-9372(1987)113:6(1319).10.1061/(ASCE)0733-9372(1987)113:6(1319)Search in Google Scholar
Tomlinson, E. J., and B. Chambers. 1979. The Effect of Longitudinal Mixing on the Settleability of Activated Sludge. Steevenage, England: Medmenham Laboratory.Search in Google Scholar
Toumi, L. B., M. Fedailaine, and K. Allia. 2008. “Modelling Three-phase Fluidized Bed Bioreactor for Wastewater Treatment.” International Journal of Chemical Reactor Engineering 6 (1): 1–16.10.2202/1542-6580.1449Search in Google Scholar
Xu, M., L. Ding, K. Xu, J. Geng, and H. Ren. 2016. “Flow Patterns and Optimization of Compartments for the Anaerobic Baffled Reactor.” Desalination and Water Treatment 57 (1): 345–52, https://doi.org/10.1080/19443994.2014.970580.Search in Google Scholar
Yang, C. Y., Y. S. Chien, J. H. Chou, H. Y. Li, and C. W. Hsieh. 2021. “Application of Cholette’s Model in Non-ideal Mixing CSTR: A Simulation Study on Dynamic Behavior.” International Journal of Chemical Reactor Engineering 19 (4): 341–67, https://doi.org/10.1515/ijcre-2020-0197.Search in Google Scholar
Young, J. C. 1991. “Factors Affecting the Design and Performance of Upflow Anaerobic Filters.” Water Science and Technology 24: 133–55, https://doi.org/10.2166/wst.1991.0222.Search in Google Scholar
Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/ijcre-2021-0112).
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- Frontmatter
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- Investigation on gas induction of liquid–gas ejector in jet loop reactor
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