Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration

Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration Publisher

Nabizadeh R¹ ; Naddafi K¹ ; Khazaei M¹ ; Fard RF² ; Izanloo H² ; Yavari Z³

Show Affiliations

1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2. Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
3. Department of Environmental Health Engineering, Esfahan University of Medical Sciences, Esfahan, Iran

Source: Environment Protection Engineering Published:2015

Abstract

Removal of suspended solids and microorganisms from an aerated lagoon effluent with a horizontal roughing filter (HRF) was investigated. The aerated lagoon receives Qom municipal wastewater. The HRF was operated at three filtration rates of 0.5,1.0 and 1.5 m3/(m2·h) during four month operation period. The measured values of turbidity, TSS, COD, pH, temperature and flow rate of HRF at the former filtration rate were 79±12 NTU, 100±11 mg/dm3, 190±12 mg/dm3, 7±0.1 °C, 17±8 °C and 0.82 dm3/min, respectively. The differences between inlet and outlet values of pH and temperature were not significant (P > 0.05). Measures turbidity, TSS and COD in HRF final effluent were 15±13.7 NTU, 37±295 mg/dm3,64±39.7 mg/dm3, respectively, which corresponds to 81.1%, 63% and 66.3% removal efficiencies, respectively. A decrease of removal efficiency was observed upon increasing filtration rates. The Spearman correlation coefficients between the head-loss and removal efficiencies ranged from 0.578 to 0.968 pointing to a direct relationship. Results of modeling approach revealed appropriate compliance between the values of the observed and predicted TSS for higher filtration rates.

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Style	Citing Format
MLA	Nabizadeh R, et al.. "Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration." Environment Protection Engineering, vol. 41, no. 3, 2015, pp. 121-136.
APA	Nabizadeh R, Naddafi K, Khazaei M, Fard RF, Izanloo H, Yavari Z (2015). Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration. Environment Protection Engineering, 41(3), 121-136.
Chicago	Nabizadeh R, Naddafi K, Khazaei M, Fard RF, Izanloo H, Yavari Z. "Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration." Environment Protection Engineering 41, no. 3 (2015): 121-136.
Harvard	Nabizadeh R et al. (2015) 'Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration', Environment Protection Engineering, 41(3), pp. 121-136.
Vancouver	Nabizadeh R, Naddafi K, Khazaei M, Fard RF, Izanloo H, Yavari Z. Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration. Environment Protection Engineering. 2015;41(3):121-136.
BibTex	@article{ author = {Nabizadeh R and Naddafi K and Khazaei M and Fard RF and Izanloo H and Yavari Z}, title = {Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration}, journal = {Environment Protection Engineering}, volume = {41}, number = {3}, pages = {121-136}, year = {2015} }
RIS	TY - JOUR AU - Nabizadeh R AU - Naddafi K AU - Khazaei M AU - Fard RF AU - Izanloo H AU - Yavari Z TI - Upgrading the Effluent Quality of an Aerated Lagoon With Horizontal Roughing Filtration JO - Environment Protection Engineering VL - 41 IS - 3 SP - 121 EP - 136 PY - 2015 ER -

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