Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process

Nawid Ahmad Akhtar; Mehmet Kobya

doi:10.51354/mjen.1407291

EN

Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process

Abstract

This study aimed to investigate the applicability and efficiency of sequential coagulation-flocculation (CF) and electrooxidation (EO) processes for cattle slaughterhouse wastewater by evaluating treatment efficiency and total operating cost values together. The effect of two different coagulant dosages (FeCl3 and alum) in the CF process and operating parameters such as current density (5 to 30 mA/cm2), wastewater flow rate (0.9 to 3.6 L/h), and supporting electrolyte concentration (1 to 3 g NaCl/L) in the EO process on chemical oxygen demand (COD) and turbidity removal were investigated. During the first part of the study, the FeCl3 coagulant dosage worked better than other coagulants, eliminating 50% of the COD and 68% of the turbidity. Due to the insufficient removal efficiencies of COD and turbidity, a secondary treatment was required. In the second part of the study, a boron-doped diamond (BDD) electrode was used to treat the coagulated effluent in a continuous EO reactor. The COD and turbidity removal efficiency under optimum treatment conditions (j = 30 mA/cm2, Q = 0.9 L/h, pH = 8.5, SE = 3.0 g NaCl/L, and hydraulic retention time = 1 hour) were calculated as 97.2% and 99.9%, respectively. At these optimum conditions, the energy consumption and total operating cost were calculated as 91.1 kWh/m3 (73.5 kWh/kg COD) and 3.50 US $/m3 (1.5 US $/kg COD), respectively. As a result, combined coagulation-flocculation and electrooxidation processes have proven to be very successful and cost-efficient for treating cattle slaughterhouse wastewater.

Keywords

Continuous electrooxidation reactor, Coagulation-flocculation, cattle Slaughterhouse, Treatment

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Details

Primary Language

English

Subjects

Waste Management, Reduction, Reuse and Recycling, Environmental Pollution and Prevention

Journal Section

Research Article

Authors

Nawid Ahmad Akhtar ^*
0009-0006-5390-7505
Kyrgyzstan

Mehmet Kobya
0000-0001-5052-7220
Kyrgyzstan

Publication Date

June 21, 2024

Submission Date

December 20, 2023

Acceptance Date

May 23, 2024

Published in Issue

Year 2024 Volume: 12 Number: 1

DOI

https://doi.org/10.51354/mjen.1407291

IZ

https://izlik.org/JA32PT73SM

APA

Akhtar, N. A., & Kobya, M. (2024). Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process. MANAS Journal of Engineering, 12(1), 116-128. https://doi.org/10.51354/mjen.1407291

AMA

1.Akhtar NA, Kobya M. Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process. MJEN. 2024;12(1):116-128. doi:10.51354/mjen.1407291

Chicago

Akhtar, Nawid Ahmad, and Mehmet Kobya. 2024. “Treatment of Cattle Slaughterhouse Wastewater by Sequential Coagulation-Flocculation Electrooxidation Process”. MANAS Journal of Engineering 12 (1): 116-28. https://doi.org/10.51354/mjen.1407291.

EndNote

Akhtar NA, Kobya M (June 1, 2024) Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process. MANAS Journal of Engineering 12 1 116–128.

IEEE

[1]N. A. Akhtar and M. Kobya, “Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process”, MJEN, vol. 12, no. 1, pp. 116–128, June 2024, doi: 10.51354/mjen.1407291.

ISNAD

Akhtar, Nawid Ahmad - Kobya, Mehmet. “Treatment of Cattle Slaughterhouse Wastewater by Sequential Coagulation-Flocculation Electrooxidation Process”. MANAS Journal of Engineering 12/1 (June 1, 2024): 116-128. https://doi.org/10.51354/mjen.1407291.

JAMA

1.Akhtar NA, Kobya M. Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process. MJEN. 2024;12:116–128.

MLA

Akhtar, Nawid Ahmad, and Mehmet Kobya. “Treatment of Cattle Slaughterhouse Wastewater by Sequential Coagulation-Flocculation Electrooxidation Process”. MANAS Journal of Engineering, vol. 12, no. 1, June 2024, pp. 116-28, doi:10.51354/mjen.1407291.

Vancouver

1.Nawid Ahmad Akhtar, Mehmet Kobya. Treatment of cattle slaughterhouse wastewater by sequential coagulation-flocculation/electrooxidation process. MJEN. 2024 Jun. 1;12(1):116-28. doi:10.51354/mjen.1407291