Method for controlling and managing the biomass store of biological installations treating waste water
AssigneeSuez Lyonnaise des Eaux
InventorsPatrice Chatellier, Philippe Caulet
Life of this patent
Estimating the term…
Abstract
A method of monitoring and managing biomass stock of treatment plants employs activated sludge. An aeration basin receives an effluent and a concentration of suspended matter in the basin is measured. A change in concentration is then analyzed and a maxima of this concentration is determined which corresponds to periods of hydraulic underperformance. A total biomass mass is estimated, and the rate of extraction of biomass is adjusted.
Claims5
Method of monitoring and of managing stock of biomass of a plant for a biological treatment of municipal or industrial wastewater by activated sludge, which include an aeration basin receiving an effluent to be treated and a clarification basin, the method comprising steps, wherein:
- a concentration of suspended matter in the aeration basin is measured;
- a change in the concentration is analyzed;
- a maxima of this concentration which corresponds to periods of hydraulic underperformance is determined;
- a total mass of biomass contained in the treatment plant is estimated by multiplying the maxima by the volume of the aeration basin;
- and
- the rate of extraction of the biomass from the plant is varied so as to adjust the total mass of the biomass contained in the plant according to pollution to be treated by the plant.
Dependencies are inferred from the claim text.