Développement et validation d'un concept de surfaces de réponse pour évaluer la traitabilité des effluents

Abstract : It was demonstrated that biological treatment response to changes in SRT, HRT, and influent total COD could be described by response surfaces for each effleunt parameter under investigation. Iso-response regions or lines could be obtained thus defining the ranges of SRT and organic load combinations which must be maintained in order to ensure a given effluent quality. The response surface for the most restrictive parameter will ensure that operating conditions are chosen in such a way as to maximize the performance of the system as a whole. This concept can assist in optimization, upgrading or retrofitting decision making. This study showed that the effect of SRT is significantly reduced beyond a value of 15 days. In addition, HRT has been shown to be equally important to SRT as a process control parameter with significant impact on system stability, sludge setleability and microbial composition, as well as on the performance. Process control can be achieved by modifying jointly or separately each parameter. The inequacy of the F/M ratio as an operating and design parameter was demonstrated experimentally through its lack of predictive potential. Also the usefulness of ATP as a biological performance indicator was assessed. This concept was developped at pilot scale using settled variable abbatoir waste and successfully applied to the operation of the full scale treatment facility receiving the same wastewater
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Ronald Zaloum. Développement et validation d'un concept de surfaces de réponse pour évaluer la traitabilité des effluents. Sciences de l'environnement. Université Paul Verlaine - Metz, 1986. Français. ⟨NNT : 1986METZ028S⟩. ⟨tel-01775558⟩

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