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:: Volume 6, Issue 4 (Autumn 2017) ::
Arch Hyg Sci 2017, 6(4): 320-325 Back to browse issues page
Efficiency of Horizontal Roughing Filter in Removing Suspended Solids from Effluent of Waste Stabilization Ponds in 2013
Seyed Mostafa Khezri , Hossein Jafari Mansoorian , Gharib Majidi , Farideh Atabi , Taha Tohidi Moghaddam , Narges Khanjani , Nahid Rashtchi *
Department of Environmental Engineering Water and Wastewater, Islamic Azad University, Western Tehran Branch, Tehran, Iran
Abstract:   (1355 Views)

Background & Aims of the Study: The Horizontal roughing filters (HRF) are generally formed with three layers. The size of the course at the beginning of the flow path is large and at the end is small. This kind of layering increases absorption capacity while the solids entering the bed–depth gradually separate because of the decline in the holes’ diameters. This study aimed to examine the efficiency of HRFs in removing total suspended solids (TSS) from effluent of a waste stabilization pond.

Materials & Methods: This experimental study was conducted in 2013. The pilot project was transferred to the Karaj wastewater treatment plant (waste stabilization pond), Alborz province of Iran. Then, the installation, equipping and start-up of the system began, using an effluent treatment plant. Sampling was done from March to August in 3 rates of 0.5, 1 and 1.5 m/h, which was included simultaneous sampling from inlet and outlet HRF to determine the concentrations of TSS.

Results: The results showed that at filtration rates of 0.5, 1, and 1.5 m/h, the average of TSS removal was equaled to 42.46, 56.65 and 33.22%, respectively. The removal efficiency of TSS at the rate of 1m/h was more than 0.5 and 1.5 m/h rate (p<0.05). The Outlet value of TSS was lower than the standards which are set by the Environmental Standards Organization (ESO) (P < 0.05).

Conclusion: According to the results of this study, the HRF function was approximately adequate in TSS removal and can be a suitable option for improving the quality of stabilization ponds effluent.

Keywords: Waste Stabilization Pond, Horizontal Roughing Filter, Total Suspended Solid
Full-Text [PDF 464 kb]   (342 Downloads)    
Type of Study: Research | Subject: Environmental Health
Received: 2016/12/17 | Accepted: 2017/06/29 | Published: 2017/09/30
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Khezri S M, Jafari Mansoorian H, Majidi G, Atabi F, Tohidi Moghaddam T, Khanjani N et al . Efficiency of Horizontal Roughing Filter in Removing Suspended Solids from Effluent of Waste Stabilization Ponds in 2013. Arch Hyg Sci. 2017; 6 (4) :320-325
URL: http://jhygiene.muq.ac.ir/article-1-207-en.html

Volume 6, Issue 4 (Autumn 2017) Back to browse issues page
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