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Hydraulic device system for the activated sludge sewage stations
In the activated sludge sewage stations, floating sludges are observed on the second clarifier. In numerous experiences it has been proved that this phenomenon results from the bacteria lysis. The retention time in the clarifier is too long (more than 2,5h generally). In consequences, a lot of dysfunctions appears like Suspended Solids, increased COD and phosphate rates in the outflow.
Traditionally clarifiers are equipped with a Clifford (cylindrical skirt). The currents are directed towards the bottom and have a circular shape in which sludge is captured as a cloud. So that, sludge is spread and it is difficult to gather it and recycle to the aerated tank. Speed-O-Clar is a custom-made HDPE retrofit device improving primary or secondary clarifier performance. A cone shaped piece of equipment, installed at the inlet of circular clarifiers, directs influent onto a baffled plate, changing the direction of flow within the clarifier. This creates a centripetal flow at the bottom which make them more efficient and enhance the limit flow rate.
Speed-O-Clar by Densiline
Implemented by Agglomération du Bocage Bressuirais in Bressuire (France) in 2022
The urban agglomeration of Bocage Bressuirais, home to more than 70,000 inhabitants, has installed the solution in May 2022. The implementation aimed to prevent overflowing with sludges in the Mauleon Waste station (Deux-Sèvres-France). A day of work was required to put in place the circular wing to enable inside-currents in a clarifier to follow a parabolic curve. In this way, sludge is constantly moving as opposed to being maintained in suspension.
Result
No more need to treat sludge with ferric chloride & more concentrated extracted sludges (15 to 20 g / l)
Densiline
Developer of SPEED-O-CLAR™, clarifier process, enhancer for sewage stations, prevents from overwhelming situations
View company profileAqua-Valley
#French #Water #Cluster. 250 members. Competitivenes. Innovation. International. #Occitanie #PACA
View partner profileThe information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.