Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate

Gedefaw Asmare; Birhan Getachew; Tsegazeab Kassa; Wendifraw Abate

doi:doi:10.11648/j.ajche.20210904.11

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Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate

Gedefaw Asmare, Birhan Getachew, Tsegazeab Kassa, Wendifraw Abate

Published in American Journal of Chemical Engineering (Volume 9, Issue 4)

Received: 3 June 2021 Accepted: 8 July 2021 Published: 15 July 2021

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Abstract

Effluents from the tannery industry have been a major source of environmental pollution. There is a need to evaluate the performance of wastewater treatment plant against regulatory standards. If in compliance found with standard, Employing appropriate treatment technique to meet the permissible discharge is important. In this reaction, performance evaluation of Tannery Wastewater and Treatment by coagulation technique of wastewater was investigated. Chemical oxygen demand (COD), Dissolved oxygen (DO), Total dissolved solids (TDS), Total suspended solids (TSS), chromium III and VI were the parameters selected to characterize the tannery waste water. From the characterization result of the factory effluent treatment plant it was found that; the factory effluent treatment plant meets the permissible discharge value in DO, Chromium III and VI. However, COD, TDS and TSS are far from the standards. Calcium polysulfide (CaSx) and ferrous sulphate (Fe(SO)₄) were the chemicals used for coagulation purpose. Treatment of 500ml original tannery waste with 400mg iron sulphate and variable calcium polysulfide concentrations (one, two and four v/v %) was conducted and characterized. From characterization result, 400mg iron sulphate and 20ml of calcium polysulfide treatment yields water that full fill the standard of discharge limit except for COD. In addition, at this treatment the best closer value of COD (1340mg/l) to the standard value (250mg/l) was found.

Published in	American Journal of Chemical Engineering (Volume 9, Issue 4)
DOI	10.11648/j.ajche.20210904.11
Page(s)	79-83
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Waste Parameter, Effluent Treatment, Sedimentation, Calcium Polysulfide, Coagulation

References

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APA Style

Gedefaw Asmare, Birhan Getachew, Tsegazeab Kassa, Wendifraw Abate. (2021). Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. American Journal of Chemical Engineering, 9(4), 79-83. https://doi.org/10.11648/j.ajche.20210904.11

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ACS Style

Gedefaw Asmare; Birhan Getachew; Tsegazeab Kassa; Wendifraw Abate. Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. Am. J. Chem. Eng. 2021, 9(4), 79-83. doi: 10.11648/j.ajche.20210904.11

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AMA Style

Gedefaw Asmare, Birhan Getachew, Tsegazeab Kassa, Wendifraw Abate. Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. Am J Chem Eng. 2021;9(4):79-83. doi: 10.11648/j.ajche.20210904.11

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@article{10.11648/j.ajche.20210904.11,
  author = {Gedefaw Asmare and Birhan Getachew and Tsegazeab Kassa and Wendifraw Abate},
  title = {Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate},
  journal = {American Journal of Chemical Engineering},
  volume = {9},
  number = {4},
  pages = {79-83},
  doi = {10.11648/j.ajche.20210904.11},
  url = {https://doi.org/10.11648/j.ajche.20210904.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20210904.11},
  abstract = {Effluents from the tannery industry have been a major source of environmental pollution. There is a need to evaluate the performance of wastewater treatment plant against regulatory standards. If in compliance found with standard, Employing appropriate treatment technique to meet the permissible discharge is important. In this reaction, performance evaluation of Tannery Wastewater and Treatment by coagulation technique of wastewater was investigated. Chemical oxygen demand (COD), Dissolved oxygen (DO), Total dissolved solids (TDS), Total suspended solids (TSS), chromium III and VI were the parameters selected to characterize the tannery waste water. From the characterization result of the factory effluent treatment plant it was found that; the factory effluent treatment plant meets the permissible discharge value in DO, Chromium III and VI. However, COD, TDS and TSS are far from the standards. Calcium polysulfide (CaSx) and ferrous sulphate (Fe(SO)4) were the chemicals used for coagulation purpose. Treatment of 500ml original tannery waste with 400mg iron sulphate and variable calcium polysulfide concentrations (one, two and four v/v %) was conducted and characterized. From characterization result, 400mg iron sulphate and 20ml of calcium polysulfide treatment yields water that full fill the standard of discharge limit except for COD. In addition, at this treatment the best closer value of COD (1340mg/l) to the standard value (250mg/l) was found.},
 year = {2021}
}

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TY - JOUR
T1 - Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate
AU - Gedefaw Asmare
AU - Birhan Getachew
AU - Tsegazeab Kassa
AU - Wendifraw Abate
Y1 - 2021/07/15
PY - 2021
N1 - https://doi.org/10.11648/j.ajche.20210904.11
DO - 10.11648/j.ajche.20210904.11
T2 - American Journal of Chemical Engineering
JF - American Journal of Chemical Engineering
JO - American Journal of Chemical Engineering
SP - 79
EP - 83
PB - Science Publishing Group
SN - 2330-8613
UR - https://doi.org/10.11648/j.ajche.20210904.11
AB - Effluents from the tannery industry have been a major source of environmental pollution. There is a need to evaluate the performance of wastewater treatment plant against regulatory standards. If in compliance found with standard, Employing appropriate treatment technique to meet the permissible discharge is important. In this reaction, performance evaluation of Tannery Wastewater and Treatment by coagulation technique of wastewater was investigated. Chemical oxygen demand (COD), Dissolved oxygen (DO), Total dissolved solids (TDS), Total suspended solids (TSS), chromium III and VI were the parameters selected to characterize the tannery waste water. From the characterization result of the factory effluent treatment plant it was found that; the factory effluent treatment plant meets the permissible discharge value in DO, Chromium III and VI. However, COD, TDS and TSS are far from the standards. Calcium polysulfide (CaSx) and ferrous sulphate (Fe(SO)4) were the chemicals used for coagulation purpose. Treatment of 500ml original tannery waste with 400mg iron sulphate and variable calcium polysulfide concentrations (one, two and four v/v %) was conducted and characterized. From characterization result, 400mg iron sulphate and 20ml of calcium polysulfide treatment yields water that full fill the standard of discharge limit except for COD. In addition, at this treatment the best closer value of COD (1340mg/l) to the standard value (250mg/l) was found.
VL - 9
IS - 4
ER -

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Author Information

Gedefaw Asmare

Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology- Bahir Dar University, Bahir Dar, Ethiopia
Birhan Getachew

Department of Chemical Engineering, Debre Berhan University, Debre Berhan, Ethiopia
Tsegazeab Kassa

Department of Chemical Engineering, Debre Berhan University, Debre Berhan, Ethiopia
Wendifraw Abate

Department of Chemical Engineering, Debre Berhan University, Debre Berhan, Ethiopia

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APA Style

Gedefaw Asmare, Birhan Getachew, Tsegazeab Kassa, Wendifraw Abate. (2021). Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. American Journal of Chemical Engineering, 9(4), 79-83. https://doi.org/10.11648/j.ajche.20210904.11

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ACS Style

Gedefaw Asmare; Birhan Getachew; Tsegazeab Kassa; Wendifraw Abate. Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. Am. J. Chem. Eng. 2021, 9(4), 79-83. doi: 10.11648/j.ajche.20210904.11

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AMA Style

Gedefaw Asmare, Birhan Getachew, Tsegazeab Kassa, Wendifraw Abate. Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate. Am J Chem Eng. 2021;9(4):79-83. doi: 10.11648/j.ajche.20210904.11

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@article{10.11648/j.ajche.20210904.11,
  author = {Gedefaw Asmare and Birhan Getachew and Tsegazeab Kassa and Wendifraw Abate},
  title = {Tannery Wastewater Treatment by Coagulation-Flocculation Technique Using Combination of Calcium Polysulfide and Ferrous Sulphate},
  journal = {American Journal of Chemical Engineering},
  volume = {9},
  number = {4},
  pages = {79-83},
  doi = {10.11648/j.ajche.20210904.11},
  url = {https://doi.org/10.11648/j.ajche.20210904.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20210904.11},
  abstract = {Effluents from the tannery industry have been a major source of environmental pollution. There is a need to evaluate the performance of wastewater treatment plant against regulatory standards. If in compliance found with standard, Employing appropriate treatment technique to meet the permissible discharge is important. In this reaction, performance evaluation of Tannery Wastewater and Treatment by coagulation technique of wastewater was investigated. Chemical oxygen demand (COD), Dissolved oxygen (DO), Total dissolved solids (TDS), Total suspended solids (TSS), chromium III and VI were the parameters selected to characterize the tannery waste water. From the characterization result of the factory effluent treatment plant it was found that; the factory effluent treatment plant meets the permissible discharge value in DO, Chromium III and VI. However, COD, TDS and TSS are far from the standards. Calcium polysulfide (CaSx) and ferrous sulphate (Fe(SO)4) were the chemicals used for coagulation purpose. Treatment of 500ml original tannery waste with 400mg iron sulphate and variable calcium polysulfide concentrations (one, two and four v/v %) was conducted and characterized. From characterization result, 400mg iron sulphate and 20ml of calcium polysulfide treatment yields water that full fill the standard of discharge limit except for COD. In addition, at this treatment the best closer value of COD (1340mg/l) to the standard value (250mg/l) was found.},
 year = {2021}
}

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