Volume 8, Issue 7 (2-2013)
J Health Syst Res 2013, 8(7): 1293-1299 |
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Asadi Ardali H, Suri A, Hasani A H, Eidi R. The Relationships between Microbial and Parasitic Parameters of Stabilized Sludge in Wastewater Treatment Plants of Chaharmahal and Bakhtiari. J Health Syst Res 2013; 8 (7) :1293-1299
URL: http://hsr.mui.ac.ir/article-1-484-en.html
URL: http://hsr.mui.ac.ir/article-1-484-en.html
1- Water and Wastewater Company of Markazi Province, Arak, Iran
2- Environmental and Occupational Health Center of Ministry of Health, Treatment and Medical Training, Tehran, Iran
3- Assistant Professor, Department of Environmental Health Engineering, School of Environment and Energy, Islamic Azad University, Tehran Science and Research Branch, Tehran, Iran
4- Lecturer, Farhangian University, Bahrol Olom, Shahrekord, Iran
2- Environmental and Occupational Health Center of Ministry of Health, Treatment and Medical Training, Tehran, Iran
3- Assistant Professor, Department of Environmental Health Engineering, School of Environment and Energy, Islamic Azad University, Tehran Science and Research Branch, Tehran, Iran
4- Lecturer, Farhangian University, Bahrol Olom, Shahrekord, Iran
Abstract: (1127 Views)
Background: Using the sludge as fertilizer on farms is one of the options to dispose it. Due to variety of pathogenic microorganisms of sludge, it may cause a wide range of bacterial and parasitic diseases in human and livestock. The purpose of this study was to investigate the relationships between several parameters of dried sludge produced in Sewage Treatment Plants to predict sludge quality and the corresponding standards. Methods: In this analytical-descriptive study, three Sewage Treatment Plants of Chaharmahal and Bakhtiari Province including Shahrekord, Farsan, and Borujen were selected due to their similarity in the weather condition and the treatment process. In order to investigate the sludge in its lowest and the highest rate of evaporation in the freezing cold winter and burning hot summer, two winters and two summers were selected as the timeframe. In this study, fecal coliform and total coliform were determined as the sludge microbial indexes and statistical relationships between them were determined using Pearson__AWT_QUOTE__s correlation. Findings: Strong statistical relationships were found between parasite eggs and fecal coliform of the samples with the Pearson__AWT_QUOTE__s correlation coefficient of 0.926. Pearson__AWT_QUOTE__s correlation coefficient between parasite eggs and total coliform was 0.919. Conclusion: As all the correlation coefficients were more than 0.9, these parameters had a proper statistical relationships. Since the best statistical relationships was found between parasite eggs and fecal coliform, other treatment plants with similar weather and process can predict microbial and parasite eggs condition in dried sludge using these relationships.
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2013/02/15 | Published: 2013/02/15
Received: 2020/07/16 | Accepted: 2013/02/15 | Published: 2013/02/15
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