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EM20 - CENTRAL DRIVE CLARIFLOCCULATOR WITH TURBINE FOR SLUDGE RECYCLE

Application Clarifying of primary waste water.
Characteristics The equipment consists of a flocculation zone, inside the cone, a clarification zone, outside the cone, a sedimentation zone at the tank bottom, bottom scrapers to convey the settled sludge to the central drain well, radial ditches to collect the clarified water.
Operation The sedimented sludge flocs are kept in suspension by a turbine, recycled and mixed with the water to be treated. The solids in the incoming water settle over the existing recycled sludge flocs. The new flocs volume increases and they tend to sediment more easily.
Materials Hot dip galvanized carbon steel or Stainless steel.
Installation In a concrete tank.
Tank diameter From 8 to 30 m.
Advantages High efficiency of sedimentation.
Optional Radial structural steel ditches

 

OUTLINES OF THE PROCESS

The flocculation must occur in a moderate and not turbulent way.
This will help the sludge flocs creation and ageing.

 

OPERATION DESCRIPTION

In the Clariflocculator the suspension is recycled from the tank bottom to the reaction chamber.
The flocculation, which takes places in the clariflocculator, makes the suspended particles size grow rather than produce a precipitation of new particles.
Then suspension goes to a secondary reaction zone and subsequently to the concentration zone, from where it can return to the primary reaction chamber. 

 

In the Clariflocculator:
• the primary reaction chamber is inside the cylinder which contains the axial turbine
• the secondary reaction chamber is outside the cylinder but inside the cone

 

The function of the turbine is:
• lifting the sludge settled on the tank bottom
• mixing the newly formed sludge flocs with the suspension in the water to be treated

 

The reagents are added and mixed with the water to be treated, just before the waste water enter the reaction chamber.
The sludge is conveyed to the central hopper by some scrapers. 
The sludge sediments on the bottom of the hopper; the concentrated sludge is drained by gravity by opening the drain valves.
The clarified water is collected in the upper part through radial ditches.

 

TECHNICAL DATA
1.1 Design flow rate : m³/h
1.2 Min-max sludge recycle flow rate : m³/h
1.3 flocculation turbine min-max speed : r.p.m.
1.4 Flocculation chamber useful volume : m³
1.5 Flocculation contact time : min.

CLARIFLOCCULATOR ACELATOR TYPE

CLARIFLOCCULATOR ACELATOR TYPE

ECOMACCHINE in November 2021 has completed the supply of a clariflocculator "ACELATOR" type for the treatment plant of RAVENNA SERVIZI.


The unit can be utilized for clarifying or for clarifying and decarbonating the inlet water with lime.

The unit is able to treat up to 1,200 m3/hr with a maximum torbidity of 10 NTU at outlet.

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REVAMPING OF PRODUCTION WATER TREATMENT AND RE-INJECTION

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ECOMACCHINE in November 2021 completed and shipped a Dissolved Gas Flotation (DGF) package complete with saturation unit.

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CLARIFLOCCULATOR ACELATOR TYPE

CLARIFLOCCULATOR ACELATOR TYPE

ECOMACCHINE in November 2021 has completed the supply of a clariflocculator "ACELATOR" type for the treatment plant of RAVENNA SERVIZI.

Read more