Performance of disc, conventional and automatic screen filters under rainbow trout fish farm effluent for drip irrigation system.

Autor: Hasani AM; Department of Water Engineering, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran., Nikmehr S; Department of Water Engineering, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran., Maroufpoor E; Department of Water Engineering, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran. E.maroufpoor@uok.ac.ir., Aminpour Y; Department of Hydraulic and Hydro-Environmental Engineering, Water Research Institute, Ministry of Energy, Tehran, Iran., Puig-Bargués J; Department of Chemical and Agricultural Engineering and Technology, University of Girona, 17003, Girona, Catalonia, Spain.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2022 Nov; Vol. 29 (53), pp. 80624-80636. Date of Electronic Publication: 2022 Jun 20.
DOI: 10.1007/s11356-022-21465-7
Abstrakt: This study aims to investigate the performance of disc, conventional screen, and automatic screen filters when rainbow trout fish effluent is used for irrigation. The experiments were performed in a fish farm, located in the north-west of Iran. The disc and conventional screen filters were tested at pressures of 150 and 300 kPa, and the automatic screen filter at 200 and 300 kPa. The filtration experiments continued until the backwashing was reached. The results showed that (1) the initial head loss of disc and conventional screen filters was 40 kPa, while for the automatic screen filter was 5 kPa. (2) In the disc filter, with increasing working pressure, the filtered volume significantly (P < 0.05) increased from 9.7 to 14.5 m 3  m -2 (10 kPa) -1 , but for conventional and automatic screen filters, it was constant at 5.5 and 7.0 m 3  m -2 (10 kPa) -1 , respectively, and all of them had significant (P < 0.05) differences. (3) In the disc filter, with increasing the working pressure, the filtered volume to reach backwashing significantly (P < 0.01) increased from 80.9 to 104.4 m 3  m -2 , while in the conventional screen filter increased from 14.1 to 16.4 m 3  m -2 . This volume at two working pressures was 29.5 m 3  m -2 for the automatic screen filter. These volumes were significantly different (P < 0.01) between filters. (4) The mass retention for the disc, conventional, and automatic screen filters were 28.88, 9.11, and 7.72 g min -1  m -2 , respectively, and tended to increase at lower working pressures. Based on this index, the difference in the performance of the filters was significant (P < 0.01). (5) Overall, the best performance was for the disc filter, and after that was the automatic screen filters, but the period of time to operate for the filters until backwashing time was less than half an hour, which is not applicable under farm conditions.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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