EM11 - ACCELATOR WITH TURBINE FOR SLUDGE RECYCLE
| Application | Clarifying of primary waste water |
| Characteristics | The equipment consists of a flocculation zone, inside the cone, a sedimentation-clarification zone, outside the cone, hoppers to collect the settled material, 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 50 m. |
OUTLINES OF THE PROCESS
The flocculation must occur in a moderate and not turbulent way. This will help the sludge flocs creation and ageing and, at the same time, prevent their settling on the tank bottom.
OPERATION DESCRIPTION
In the Accelator the suspension is recycled from the sludge-bed chamber to the reaction chamber.
The reagents are added directly into the suspension of the precipitated sludge so that the reaction makes the suspended particles size grow rather than produce a precipitation of new particles.
Then the 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 Accelator:
• the primary reaction chamber is inside the cone
• the secondary reaction chamber is downstream the turbine
The rotary stirrer blades angle produces the circulation.
The sludge drainage is achieved by closing the sluice gates which do not allow the sludge to return to the reaction zone from the concentration zone. 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.
The Accelator is not equipped with bottom scrapers. In some cases only, for equipments of more than 25 m., it could be necessary to install some bottom scrapers to convey the sludge into the hopper.
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
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.
REVAMPING OF PRODUCTION WATER TREATMENT AND RE-INJECTION
ECOMACCHINE in November 2021 completed and shipped a Dissolved Gas Flotation (DGF) package complete with saturation unit.
CLARIFLOCCULATOR ACELATOR TYPE
ECOMACCHINE in November 2021 has completed the supply of a clariflocculator "ACELATOR" type for the treatment plant of RAVENNA SERVIZI.