IMHOFF TANKS

These products belong to the category of the so-called combined basin or multiphase basins. Because of their configuration they permit to carry out two different treatments: sedimentation (physical process) and digestion (biological process).
The Imhoff tanks are made up of two overlapped parts connected to each other by a hydraulic system: the upper part is shaped like a hopper with small slits in the bottom. It permits the sedimentation of the substances contained in the sewage, which crosses the upper part longitudinally.
The lower part is for the continual store and digestion of the sludge that continuously comes from the hole of the above chamber.
The tanks are made to hold a volume equal to a retention time of the sewage of about two hours at the maximum capacity load for the sedimentation chamber and of 100 L/AE for the digestion chamber (considering a water supply of 200L/AE per day per inhabitant).

Imhoff monolithic tank diam. cm. int. 150

Description

1. Deposit of sludge
2. Digestion
3. Sedimentation
4. Manhole
5. Latherproof
E. Black water inlet
U. Clarified water outlet

to be continued... (IMHOFF tanks - page 2)

 

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