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Qom Univ Med Sci J 2010, 4(1): 42-47 Back to browse issues page
Elimination of Suspended Solids from Aerated Lagoon Effluent by Horizontal Roughing Filter
M Khazaei 1, R Nabizadeh2, K Naddafi2, N Noorieh3, AR Omidi Oskouei4
1- Qom University of Medical Sciences , khazaei@muq.ac.ir
2- Tehran University of Medical Sciences
3- Khorram Abad University of Medical Sciences
4- Qom University of Medical Sciences
Abstract:   (3896 Views)

Background and Objectives: Horizontal roughing filters (HRF) can properly remove suspended solids and microorganisms from surface water resources, especially on filtration rates less than 1.5 m/h. This research was aimed at suspended solid removal efficiency of HRF during secondary wastewater effluent filtration.

Methods: This experimental study was conducted by installing an HRF pilot system on effluent pumping station of Qom wastewater treatment plant based on aerated lagoon process. The pilot was a horizontal cylindrical column consisting of three compartments filled with river gravels in various sizes. Grab samples were simultaneously taken from HRF inlet and outlet in three filtration rates: 0.5, 1, and 1.5m/h

Results: The results indicated that filtration rate had a significant effect on the amount of total suspended solids in HRF effluent. During optimum operation of HRF, removal efficiencies of three filtration rates (0.5, 1, and 1.5 m/h) were 78.5, 63.1, and 66.9, respectively.

Conclusion: T-test analysis indicated that with a significance difference, outlet effluent from HRF in all three flow rates met the standard requirements of Iran Environmental Protection Agency for irrigation and discharge to surface water.

Keywords: HRF, Wastewater Treatment Plant, Aerated Lagoon, Total Suspended Solids
Full-Text [PDF 1073 kb]   (849 Downloads)    
Type of Study: Original Article |
Received: 2016/04/3 | Accepted: 2016/04/3 | Published: 2016/04/3
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Khazaei M, Nabizadeh R, Naddafi K, Noorieh N, Omidi Oskouei A. Elimination of Suspended Solids from Aerated Lagoon Effluent by Horizontal Roughing Filter. Qom Univ Med Sci J. 2010; 4 (1) :42-47
URL: http://journal.muq.ac.ir/article-1-513-en.html

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Volume 4, Issue 1 (4-2010) Back to browse issues page
مجله دانشگاه علوم پزشکی قم Qom University of Medical Sciences Journal
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