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| Cordier, Clemence; Stavrakakis, Christophe; Sauvade, Patrick; Coelho, Franz; Moulin, Philippe. |
| Among all the techniques studied to overcome fouling generated in dead-end filtration, the injection of air during backwashes proved to be the most effective. Indeed, shear stress engendered by the two-phase flow enhanced particle removal on membrane surface. This work aims to study the injection of air to drain the membranes before backwash. Firstly, the efficiency of this backwash procedure was evaluated during the ultrafiltration of seawater on a semi industrial pilot plant using different operating conditions. Then, the treatment of seawater, doped with oyster gametes to simulate the filtration of shellfish hatchery effluents, was performed to confirm the hydraulic performance of the air backwash. Indeed, the release of gametes, expulsed by exotic... |
| Tipo: Text |
Palavras-chave: Ultrafiltration; Air backwash; Efficiency; Viability of organic matter; Shellfish hatchery effluents. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00451/56270/57842.pdf |
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| Cordier, Clemence; Charpin, Lisa; Stavrakakis, Christophe; Papin, Mathias; Guyomard, Killian; Sauvade, Patrick; Coelho, Franz; Moulin, Philippe. |
| Shellfish profession is jeopardized by water quality problem that concerns inlet, with the need to protect the animals from pathogens contaminations, and effluents potentially harmful for the environment with the presence of pathogens, nutrients or organic matter. In this study, ultrafiltration was tested to answer these issues. The objective of the work was two-fold: (i) treat a real effluent from an oyster breeding, the pilot had to continuously face a water containing organic matter and pathogens and (ii) use ultrafiltered water to feed an oyster spat. The process was proved to be efficient in terms of total suspended solids (TSS) and bacterial retention, and especially for Vibrio bacteria, some of whom are potentially harmful for shells. The... |
| Tipo: Text |
Palavras-chave: Ultrafiltration; Aquaculture; Shellfish effluent; Spat protection. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00478/58951/61539.pdf |
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