کارايي صافي درشت‌دانه با جريان افقي در ارتقاي کيفيت پساب خروجي و احتمال بازيافت آن براي کشاورزي Improvement of Stabilization Pond Effluent by Horizontal Roughing Filter (HRF)
Journal Title: آب و فاضلاب - Year 2018, Vol 29, Issue 3
Abstract
Abstract User-friendly and low-cost wastewater treatment plants are good options for treating wastewater of small communities. The effluent of these treatment plants can be improved by various methods including using a horizontal rouphing filter (HRF). In this paper, HRF performance was evaluat by passing the Parkandabad wastewater treatment plant effluent through pilot scale constructed HRF. The HRF was constudted with four- compartments of different sand sizes and was operated under three filtration rates of 0.5, 1 and 1.5 m3/m2.h. The results obtained from this study showed that the HFR performed the best at filtration rate of 0.5m/h when the removal efficiency for BOD5 and COD was 61 and 63 %, respectively. Optimum removal efficieny of BOD5 and COD up to 65% could be achieved with an extended filtration run length. However, longer duration of filter operation after 4 months, reduced the filter performance for BOD5 and COD removal efficiency to 56.8 and 61.5%, respectivel. In conclusion, by using 4-compartment HRFs, compared with the conventional 3-compartment filtration, it may be possible to produce effluent quality for BOD5 and COD that is permissible for agricultural irrigation purposes.
Authors and Affiliations
Majid Daee, Amin Alizadeh, Farid Hosseini, Abdollah Rashidi Mehrabadi
Keywords
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- EP ID EP420724
- DOI 10.22093/wwj.2017.71248.2314
- Views 112
- Downloads 0
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