Volume 11, Issue 3 (10-2015)
J Health Syst Res 2015, 11(3): 650-658 |
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Khorsandi H, Fathi F, Emamifar B, Shaabani H. A Study of the Horizontal Roughing Filter Efficiency to Improve the Quality of Effluent from Boukan Polishing Pond Following Aerated Lagoons. J Health Syst Res 2015; 11 (3) :650-658
URL: http://hsr.mui.ac.ir/article-1-790-en.html
URL: http://hsr.mui.ac.ir/article-1-790-en.html
1- Associate Professor, Environmental Health Engineering Department, Social Determinants of Health Research Center , School of Health, Urmia University of Medical Sciences, Urmia, Iran
2- B.S of Boukan Wastewater Treatment plant, West Azerbyjan Water and Wastwater Company, Boukan, Iran
3- B.S of Environmental Health Engineering, Urmia University of Medical Sciences, Urmia, Iran
2- B.S of Boukan Wastewater Treatment plant, West Azerbyjan Water and Wastwater Company, Boukan, Iran
3- B.S of Environmental Health Engineering, Urmia University of Medical Sciences, Urmia, Iran
Abstract: (1082 Views)
Background: The need to improve the quality of lagoon effluent is one of the environmental priorities for wastewater projects. Thus, the study objective was to investigate horizontal roughing filter (HRF) performance in reducing total suspended solides (TSS), chemical oxygen demand (COD), turbidity and fecal coliform in the effluent from polishing pond following aerated lagoons in order to comply with the national effluent standards.Methods: A pilot-scale experimental study was carried out on-site in the wastewater treatment plant of Boukan, Iran. Design, manufacture and installation of horizontal roughing filter pilot were performed according to Wegelin guidelines. HRF Performance for the removal of TSS, COD, turbidity and fecal coliform was studied in three filtration rates of 0.5, 1 and 1.5 m3/m2.hr. The results were analyzed by analysis of covariance (ANCOVA) using SPSS software, V.16.Findings: The mean TSS, COD, turbidity and fecal coliform in the horizontal roughing filter effluent had significant difference within various hydroulic loading rates (P< 0.001). Accordingly, in hydroulic loading rate of 0.5 m3/m2.hr as optimum loading rate, the HRF reduced TSS, COD and turbidity of effluent from the polishing pond following aerated lagoons to 21 mg/L, 35 mg/L and 8.33 NTU, respectively.Conclusion: The HRF can be used as appropriate option, due to high efficiency and easy operation, to improve the quality of effluent from the polishing pond following aerated lagoons in order to reach the national discharge standards.Key Words: Effluent, Horizontal Roughing Filter, Wastewater, Aerated Lagoon
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2015/10/15 | Published: 2015/10/15
Received: 2020/07/16 | Accepted: 2015/10/15 | Published: 2015/10/15
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