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Gales A., Bonnafous A., Carré Claire, Jauzein V., Lanouguere E., Le Floc'h E., Pinoit J., Poullain C., Roques C., Sialve B., Simier Monique, Steyer J. P., Fouilland E. (2019). Importance of ecological interactions during wastewater treatment using High Rate Algal Ponds under different temperate climates. Algal Research : Biomass Biofuels and Bioproducts, 40, p. art. 101508 [9 p.]. ISSN 2211-9264.

Titre du document
Importance of ecological interactions during wastewater treatment using High Rate Algal Ponds under different temperate climates
Année de publication
2019
Type de document
Article référencé dans le Web of Science WOS:000468144100032
Auteurs
Gales A., Bonnafous A., Carré Claire, Jauzein V., Lanouguere E., Le Floc'h E., Pinoit J., Poullain C., Roques C., Sialve B., Simier Monique, Steyer J. P., Fouilland E.
Source
Algal Research : Biomass Biofuels and Bioproducts, 2019, 40, p. art. 101508 [9 p.] ISSN 2211-9264
Several studies focused on wastewater treatment in High Rate Algal Ponds (HRAP) suggest that highly variable climatic conditions cause large variations of microalgal biomass productivity. In the present study, we show that similar carbon, nitrogen and phosphorus removal efficiencies were reached in different HRAPs treating urban wastewaters located in two different temperate (Mediterranean and oceanic) climates. Furthermore, similar ecological successions were observed in these HRAPs. During the start-up phase, the consumption of organic matter by detritivores, already present in the wastewater, appears to be necessary for the microalgae to grow within two weeks in spring. The growth of the rapid-growing species, Chlorella sp., followed by the grazing-resilient species, Scenedesmus sp., combined with nitrifying and denitrifying bacterial activity, removed most the ammonia. The resulting exhaustion of ammonia would limit the complete removal of dissolved COD by bacteria and phosphate by microalgae in the HRAPs. This study shows that similar biological and environmental constraints were applied on the HRAPs, making the process efficiency highly reproducible under different temperate latitudes.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Sciences du milieu [021] ; Pollution [038] ; Biotechnologies [084]
Description Géographique
FRANCE ; ZONE TEMPEREE
Localisation
Fonds IRD [F B010075701]
Identifiant IRD
fdi:010075701
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