Issue 11, 2024

Mathematical modeling to size anaerobic stabilization ponds intended for slaughterhouse wastewater treatment – the role of temperature and hydraulic retention time

Abstract

Slaughterhouse wastewater treatment is mainly performed using anaerobic stabilization pond systems. Despite some mathematical models for facultative ponds provided in the literature, no guidelines or mathematical equations exist to specifically size anaerobic ponds for this particular type of wastewater. In most cases, empirical knowledge or domestic wastewater treatment criteria are adapted for this purpose. This study proposes a mathematical model based on Bartha and Pramer's classical respirometry adapted to anaerobic conditions. Raw slaughterhouse wastewater was analyzed for biochemical oxygen demand (BOD) removal under steady-state conditions at varying temperatures and contact times. Results showed compatibility between the experimental conditions and data from anaerobic pond systems in operation, enabling the development of a mathematical model capable of correlating hydraulic retention time for BOD removal as a function of temperature. The model was validated using literature and field data, with a standard deviation of up to 7%, and can be used to design anaerobic stabilization pond systems over a wide temperature range (from 10 °C to 35 °C).

Graphical abstract: Mathematical modeling to size anaerobic stabilization ponds intended for slaughterhouse wastewater treatment – the role of temperature and hydraulic retention time

Supplementary files

Article information

Article type
Paper
Submitted
02 Jul 2024
Accepted
05 Sep 2024
First published
18 Sep 2024

Environ. Sci.: Water Res. Technol., 2024,10, 2882-2896

Mathematical modeling to size anaerobic stabilization ponds intended for slaughterhouse wastewater treatment – the role of temperature and hydraulic retention time

P. E. S. Soldera, R. F. Dantas and E. Fagnani, Environ. Sci.: Water Res. Technol., 2024, 10, 2882 DOI: 10.1039/D4EW00557K

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