Volume 17, Issue 4 (3-2025)
ijhe 2025, 17(4): 757-774 |
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Arab Ameri N, Godini H, Zarrabi M, Darvishmotevalli M. A study on the performance of the wastewater treatment plant in Charmshahr industrial estate and the potential of reuse for effluent and disposal sludge. ijhe 2025; 17 (4) :757-774
URL: http://ijhe.tums.ac.ir/article-1-6956-en.html
URL: http://ijhe.tums.ac.ir/article-1-6956-en.html
1- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran
2- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran AND Research Center for Health, Safety, and Environment, Alborz University of Medical Sciences, Karaj, Iran ,godini_h@yahoo.com
3- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran AND Research Center for Health, Safety, and Environment, Alborz University of Medical Sciences, Karaj, Iran
2- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran AND Research Center for Health, Safety, and Environment, Alborz University of Medical Sciences, Karaj, Iran ,
3- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran AND Research Center for Health, Safety, and Environment, Alborz University of Medical Sciences, Karaj, Iran
Abstract: (51 Views)
Background and Objective: Wastewater produced in industrial estates is crucial to address due to the wide range of pollutants it contains. The objective of the present study was to investigate the performance of the Chamshahr Industrial Estate Wastewater Treatment Plant for effluent and sludge reuse.
Materials and Methods: In this descriptive and comparative study, the quality of raw industrial wastewater, effluent, and sludge from the wastewater treatment plant of the Chamshahr Industrial Estate was investigated over three periods at monthly intervals. Additionally, archival quality data for wastewater, effluent, and sludge from 1402 to 1403 were analyzed. The results were compared with the standards and guidelines of Iran, WHO, FAO, USEPA, and others. The wastewater treatment method employed a combination of chemical sedimentation and aerated lagoons with return sludge.
Results: The volume of wastewater produced in this industrial estate was 15,000 m³/day, primarily originating from leather and tanning industries (6,100 m³/day), which exhibit high pollution intensity. The treatment plant's efficiency in removing BOD, COD, and TSS was 62±24%, 72±19%, and 84±13%, respectively. However, due to the concentration of heavy metals, such as chromium in the wastewater (0.28 mg/L) and sludge (353.5 mg/L), the treatment method was unable to meet existing standards and guidelines. Furthermore, the salt content in the effluent (43,300 mg/L) and sludge (202,000 mg/L) was excessively high, rendering it unsuitable for disposal or reuse without further treatment.
Conclusion: The performance of the wastewater treatment plant fails to meet the standards and guidelines for environmental discharge and the reuse of effluent and sludge. Therefore, the final effluent and sludge require additional treatment to enable reuse and prevent environmental pollution.
Materials and Methods: In this descriptive and comparative study, the quality of raw industrial wastewater, effluent, and sludge from the wastewater treatment plant of the Chamshahr Industrial Estate was investigated over three periods at monthly intervals. Additionally, archival quality data for wastewater, effluent, and sludge from 1402 to 1403 were analyzed. The results were compared with the standards and guidelines of Iran, WHO, FAO, USEPA, and others. The wastewater treatment method employed a combination of chemical sedimentation and aerated lagoons with return sludge.
Results: The volume of wastewater produced in this industrial estate was 15,000 m³/day, primarily originating from leather and tanning industries (6,100 m³/day), which exhibit high pollution intensity. The treatment plant's efficiency in removing BOD, COD, and TSS was 62±24%, 72±19%, and 84±13%, respectively. However, due to the concentration of heavy metals, such as chromium in the wastewater (0.28 mg/L) and sludge (353.5 mg/L), the treatment method was unable to meet existing standards and guidelines. Furthermore, the salt content in the effluent (43,300 mg/L) and sludge (202,000 mg/L) was excessively high, rendering it unsuitable for disposal or reuse without further treatment.
Conclusion: The performance of the wastewater treatment plant fails to meet the standards and guidelines for environmental discharge and the reuse of effluent and sludge. Therefore, the final effluent and sludge require additional treatment to enable reuse and prevent environmental pollution.
Type of Study: Research |
Subject:
wastewater
Received: 2024/07/17 | Accepted: 2024/12/4 | Published: 2025/03/8
Received: 2024/07/17 | Accepted: 2024/12/4 | Published: 2025/03/8
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