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EnviroScreen

Shaftless screw screening

The Enviroscreen series SRS using shaftless screw is particularly adapted to project where effluent is delivered by gravity. The unit insures screening and conveying of waste.
However, to match with specific applications or installations, it is possible to add a compacting zone for dewatering the waste (model SRS/P).
There is also a built-in tank version, for pump discharge operation (SRS/CP series).
The effluent is flowing through the filtration grid where solid waste is stopped and removed under the action of the conveying shaftless screw towards the upper part to be discharged. Up to 1000 m3/h can be processed per unit.
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Layouts
1

Discharge zone

2

Dry waste outlet

3

Fixing supports

4

Effluent inlet

5

Effluent outlet

 

6

Motorisation

7

Shaftless screw fitted with brush

8

Filtration screen

With shaftles screw
1

Shaftless screw with brushes

2

Effluent inlet

3

Effluent outlet

4

Compacting zone

5

Solid waste

6

Filtration screen

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Option
In channel screening – compacting unit with shaftless screw srs/p
Specificities
  • Easy installation and maintenance
  • Small footprint
  • Proven technology
  • Low maintenance costs
  • Reliability and durability
Screening

The effluent is processed through the cylindric filtration grid. Due to such design, the effective filtration area is much larger compare to flat screening technology. Therefore, the ratio between size/flow allows to reduce the overall dimensions of the unit. Brushes are fixed onto the shaftless screw in order to keep the filtration zone clean and flow efficient by rotation during operation.

Conveying
The screw is extended to the conveying zone and then to the compacting zone before solid waste discharge.
Discharge
The waste is conveyed towards the upper part of the machine towards the discharge zone, the position of which is defined by the length of the conveying zone adapted to the lay-out.
Washing Ramp
In order to reduce the organic content present in the solid waste, washing ramps can be installed at the screeening and conveying zones.
Waste

The screening waste can be either discharged directly into containers or conditionned in continuous closed plastic bagging unit.

Performances
Hydraulic flow rates with urban effluent (m3/h)
MESH (MM)SRS 200SRS 300SRS 400SRS 500SRS 680
0.753876121192359
14794149237443
268136215342638
355110174277517
668136215342638
1084168266422788
Material

Construction in stainless steel 304L or 316L

Screw in special steel high resistance

Dimensions
Overall dimensions in mm
ModelsSRS 200/300 / PSRS 400 / PSRS 500 / PSRS 680 / P
DimensionsMiniMaxiMiniMaxiMiniMaxiMiniMaxi
Unit length25009000300090003000900030009000
Footprint20487372245773722457737224577372
Height14345162172151621721516217215162
Width250 / 350*450550750

*350 with shaftless screw SRS/P

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