Algal-bacterial consortium in high rate algal pond : evaluation of performances, wastewater nutrient recovery and experimental and numerical models based design

Abstract : The thesis focused on both experimental and modeling works aiming to investigate the algal bacterial processes in High-Rate Algal Pond (HRAP) system. A pilot HRAP system was built and the impacts of different operational conditions on hydraulic and gas transfer rate of the pilot were investigated. Moreover, optimal inoculation ratio between algae and bacteria (Al-Bac) was also studied. The Al-Bac biomass was theninoculated in the HRAP system for long term assessment of wastewater treatment and nutrient recovery. The HRAP in this study can be applied for secondary treatment application or as a primary step removing rapidly high loads of COD and TKN from centrate wastewater. Experimental results obtained were also employed in calibrating and validating black box and comprehensive algal bacterial models. Both models coulddescribe the system in long term. The former was adequate for giving quick assessment of the system performance as well as sizing application while the latter successfully simulated the results both in long (general) and short (detailed) time scale. A next step should be applying the system in large scale.
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Le Anh Pham. Algal-bacterial consortium in high rate algal pond : evaluation of performances, wastewater nutrient recovery and experimental and numerical models based design. Ecotoxicology. Université de Strasbourg, 2018. English. ⟨NNT : 2018STRAD023⟩. ⟨tel-02160484⟩

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