Compact Units Pretreatment Plants For Wastewater Treatment Description

Combined pretreatment system is an answer to the high civil works costs and large footprint required to execute complete pretreatment systems in concrete, screening channel, sedimentation tanks and hoppers FOG removal. The DAGYEE system is a state-of-the-art combined pretreatment system designed to optimally perform all the effluent pretreatment function, screening, grit removal, FOG removal, in a single stainless steel machine.

The DAGYEE range consists of for screening and grit removal and the for screening, grit removal and FOG removal.
Generally supplied with the CFC Screw Screen, but in special execution it is also possible to provide it with the auger rotating drum screen, the step screen, the sub-vertical bar screen, or the perforated plate and brush screen.

Combined Screening Component

Dependable, complete and compact unit
performing the following process steps:
Fine screening
Screenings dewatering
Grit separation
Grit dewatering
Grease separation and removal (optional)

Combined Screening Working Principle

The compact Wastewater Treatment Plant (STU/C) is a compact plant to pre-treat sewage entering the plant at flow rates up to 200 litres/sec.

It is a completely enclosed system for an external above ground (or below grade) installation that:

Screens solids from the effluent
Lifts the screenings above the effluent level and simultaneous washes the screenings
De-waters the screenings which are discharged into conveniently placed skips
Separates sand particles / gritl
Lifts and de-waters the grit which is either discharged into the same skip or a separate skip
Optional grease removal

The wastewater firstly enters the tank where a screw screen is placed.

Big size solid materials are filtrated by the screw screen and a screw conveyor moves the solid materials captured up to the discharge point. At the end of the conveyor, they are pressed by the compaction unit before discharge.

The water which has still solid materials in smaller sizes flows through the sedimentation tank. The particles are settled by time and a horizontal screwconveyor transports them to the collection hopper.

Finally, they are conveyed by the grit removal screw conveyor to the discharge point.
 

Combined Screening Parameter

Combined Screening Features

Compact design
No odour or clogging problems
Low investment cost
Low maintenance and operation costs
No civil works required
Easy to install and operate
Volume reduction of the washed out solid
Low residual organic content in the washed out solid

Combined Screening Applications

Small sewage treatment works
Municipal wastewater treatment plants
Industrial wastewater treatment plant

Combined Screening Functions

Screening
Washing/compacting of solid removed
Sand/grit separation
Degreasing
Main advantages
Odor-free
No clogging
Low maintenance and operation costs
Low room needed
No construction works needed
Easy to install and operate
Very low residual organic content in the washed out solid
Volume reduction (up to 40%) of the washed out solid