Volume 14, Issue 1 (4-2018)
HSR 2018, 14(1): 98-106 |
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Bijan Bina 
1, Mohamad Mehdi Amin1 , Marjan Mansourian2 , Maryam Hatamzadeh3 , Golrokh Marasi4 , Marzieh Vahid-Dastjerdi3
1, Mohamad Mehdi Amin1 , Marjan Mansourian2 , Maryam Hatamzadeh3 , Golrokh Marasi4 , Marzieh Vahid-Dastjerdi3
1- Professor, Environment Research Center, Research Institute for Primordial Prevention of Non-communicable Diseases AND Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences, Isfahan, Iran
2- Associate Professor, Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences, Isfahan, Iran
4- MSc Student, Student Research Committee AND Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences, Isfahan, Iran
2- Associate Professor, Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences, Isfahan, Iran
4- MSc Student, Student Research Committee AND Department of Environmental Health Engineering, School of Health , Isfahan University of Medical Sciences, Isfahan, Iran
Abstract: (1095 Views)
Background: Dairies and livestock industries generate wastewater which is high in nutrients, and can impressed water resources. Constructed wetlands are one of alternatives for livestock wastewater treatments, because of their pollution removal efficiency, and low cost in construction and operation. The goal of this study was to determine the efficiency of constructed wetland at organic matter and nutrient removal at different hydraulic loading rates (HLR) and hydraulic retention times (HRT).Methods: The removal efficiency of biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), NO3-N, and PO4 (orthophosphate) from livestock wastewater in constructed wetlands at different HLRs and HRTs at a 6-months period were investigated.Findings: The highest removal efficiency of BOD, COD, TSS, NO3 and PO4 was obtained at the lowest HLR and highest HRT, in temperature above 15 °C, and was 74%, 62%, 69%, 61%, and 23%, respectively.Conclusion: Constructed wetlands can improve effluent quality from secondary wastewater treatment plant of livestock industry to meet the standard on Iranian Environmental Organization to reuse it in irrigation.
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2018/04/15 | Published: 2018/04/15
Received: 2020/07/16 | Accepted: 2018/04/15 | Published: 2018/04/15
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