Investigating the Efficiency and Kinetic Coefficients of Nutrient Removal in the Subsurface Artificial Wetland of Yazd Wastewater Treatment Plant

Environmental Health Engineering and Management Journal 2015; 2(1): 23–30

8 Pages Posted: 8 Jul 2015

See all articles by Mahdi Farzadkia

Mahdi Farzadkia

Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran

Mohammad Hasan Ehrampoush

Environmental Health Engineering Department, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Ehsan Abouee Mehrizi

Environment Research Center, Iran University of Medical Sciences, Department of Environmental Health Engineering, Faculty of Public Health, North Khorasan University of Medical Sciences-

Shahram Sadeghi

Environmental Health Engineering, Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran

Parvaneh Talebi

Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran

Akbar Salehi

Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran

Majid Kermani

Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran

Date Written: February 14, 2015

Abstract

Background: Investigating the performance of naturally operated treatment plants may be due to the fact that they cannot be operated as desired, or that they should be modified to achieve good performance e.g. for nutrients removal. The advantage of kinetic coefficient determination is that the model can be adjusted to fit data and then used for analyzing alternatives to improve the process. This study investigates the efficiency of subsurface artificial wetland and determines its kinetic coefficients for nutrient removal.

Methods: The present study investigated the kinetics of biological reactions that occurred in subsurface wetland to remove wastewater nutrient. Samples were taken from 3 locations of wetlands for 6 months. The nutrient content was determined through measuring Total Kjehldahl Nitrogen (TKN), ammonium, nitrate, and phosphate values.

Results: Average levels for TKN, ammonium, nitrate, and phosphate in effluent of control wetland were 41.15, 23.59, 1.735, and 6.43 mg/L, and in wetland with reeds were 28.91, 19.99, 1.49 and 5.63 mg/L, respectively. First-order, second-order, and Stover-Kincannon models were applied and analyzed using statistical parameters obtained from the models (Umax, KB).

Conclusion: The nutrients removal at Yazd wastewater treatment plant was remarkable, and the presence of reeds in wetland beds was not very efficient in improving system performance. Other more efficient plants are suggested to be evaluated in the system. Stover-Kincannon kinetic model provided predictions having the closest relationship with actual data obtained from the field.

Keywords: Wastewater, Wetland, Nutrients, Kinetic coefficients, Yazd

Suggested Citation

Farzadkia, Mahdi and Ehrampoush, Mohammad Hasan and Abouee Mehrizi, Ehsan and Sadeghi, Shahram and Talebi, Parvaneh and Salehi, Akbar and Kermani, Majid, Investigating the Efficiency and Kinetic Coefficients of Nutrient Removal in the Subsurface Artificial Wetland of Yazd Wastewater Treatment Plant (February 14, 2015). Environmental Health Engineering and Management Journal 2015; 2(1): 23–30. Available at SSRN: https://ssrn.com/abstract=2610040

Mahdi Farzadkia

Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran ( email )

Hemmat Hwy
Tehran
Iran

Mohammad Hasan Ehrampoush

Environmental Health Engineering Department, Shahid Sadoughi University of Medical Sciences, Yazd, Iran ( email )

Shohaday-e-Gomnam Blvd.
Alem Sq.
Yazd
Iran

Ehsan Abouee Mehrizi

Environment Research Center, Iran University of Medical Sciences, Department of Environmental Health Engineering, Faculty of Public Health, North Khorasan University of Medical Sciences- ( email )

Hemmat Hwy
Tehran
Iran

Shahram Sadeghi

Environmental Health Engineering, Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran ( email )

Sanandaj
Iran

Parvaneh Talebi

Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran ( email )

Hamedan, Iran
Iran
Tehran, Isfahan 461-15655
Iran

Akbar Salehi

Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran ( email )

Hamedan, Iran
Iran
Tehran, Isfahan 461-15655
Iran

Majid Kermani (Contact Author)

Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran ( email )

Hemmat Hwy
Tehran
Iran

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