C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/12 (2006.01) G05D 21/00 (2006.01)
Patent
CA 2305489
The invention concerns a method for controlling and managing the biomass store of plants biologically treating with activated sludge industrial or urban waste water, characterised in that it consists in using the variations in the hydraulic regime imposed by the variations in the flow rate of water to be treated for evaluating the total amount of sludge present in the plant, said evaluation, obtained by measuring the amount of suspended matters in the plant aeration tank, being carried out during intervals of sub-level hydraulic regime whereto correspond the maximal biomass concentration levels in said tank, the value of said concentration giving, by being multiplied by the tank volume, an estimate of the total mass of biomass or biomass store contained in the treatment plant.
The invention concerns a method for controlling and managing the biomass store of plants biologically treating with activated sludge industrial or urban waste water, characterised in that it consists in using the variations in the hydraulic regime imposed by the variations in the flow rate of water to be treated for evaluating the total amount of sludge present in the plant, said evaluation, obtained by measuring the amount of suspended matters in the plant aeration tank, being carried out during intervals of sub-level hydraulic regime whereto correspond the maximal biomass concentration levels in said tank, the value of said concentration giving, by being multiplied by the tank volume, an estimate of the total mass of biomass or biomass store contained in the treatment plant. Procédé de contrôle et de gestion du stock de biomasse d'installations de traitement biologique par boues activées d'eaux usées, municipales ou industrielles, caractérisé en ce qu'il consiste à utiliser les variations de régime hydraulique imposées par les variations du débit d'eau à traiter pour évaluer la quantité totale de boues présente dans l'installation, cette évaluation, effectuée par une mesure de la quantité de matières en suspension dans le bassin d'aération de l'installation, étant réalisée pendant les périodes de sous-régime hydraulique auxquelles correspondent les maxima de concentrations en biomasse dans ledit bassin, la valeur de ladite concentration donnant, par multiplication par le volume du bassin, une estimation de la masse totale de biomasse ou stock de biomasse, contenue dans l'installation de traitement.
Caulet Philippe
Chatellier Patrice
Goudreau Gage Dubuc
Suez - Lyonnaise Des Eaux
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