- Tytuł:
- Upgrading the effluent quality of an aerated lagoon with horizontal roughing filtration
- Autorzy:
-
Nabizadeh, R.
Naddafi, K.
Khazaei, M.
Fard, R. F.
Izanloo, H.
Yavari, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/208010.pdf
- Data publikacji:
- 2015
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
filtration
efficiency
effluents
lakes
turbidity
water quality
effluent quality
filtration rate
municipal wastewaters
roughing filtration
Spearman correlation coefficients
suspended solids
filtrowanie
wydajność
ścieki
jeziora
mętność
jakość wody
jakość ścieków
szybkość filtracji
ścieki komunalne
filtracja zgrubna
współczynniki korelacji Spearmana
zawiesiny - Opis:
- 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.
- Źródło:
-
Environment Protection Engineering; 2015, 41, 3; 121-136
0324-8828 - Pojawia się w:
- Environment Protection Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł