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EnviroStrat

Vertical bar screen

Envirostrat inclined screens, STO series, are installed in channels. They fulfill both fine or coarse screening function. They can also be equipped with a fully integrated compactor for screenings dewatering (STO/P series).
The effluent passes through the screen, while the waste is stopped by vertical bars spaced apart according to the desired mesh.
The screen start-up is programmed periodically, and by loss of head measurement caused by the accumulation of waste on the bars.
The waste is lifted by means of multiple rakes drived by two lateral chains.
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Layouts
1

Motor

2

Sliding plate

3

Frame

4

Covers

5

Lateral rake and driving chains

6

Bars

7

Rake

8

Solid Waste outlet

Specificities
  • Installation : Chanel
  • 90° inclined bar screen
  • Bar spacing from 2 to 60 mm
  • Discharge height up to 15 m
  • Screenings discharge downstream
  • Rake driving by lateral chains
  • Simple design, reliable and sturdy
Frame

The structure of the screen is made up of two lateral frame structures fitting the required channel width. For channel installation, lateral rubber bands are sealing the gap between screen and civil-work. RAKESEP screens are covering configurations up to 2 meter width and up to 15 meters discharge height.

Filtration screen

The screen consists of fixed bars or Johnson profil whose space between them defines the screening mesh. This model with multiple rakes is particularly adapted for high loaded effluent and can be used either as a fine or coarse screen (2 to 60 mm bar spacing).

Mecanism
Rakes are fixed to lateral chains driven by toothed wheels. The precision of the upward movement of the rakes along the bar screen and then along the sliding plate guarantees a perfect scraping and raising of waste up to the point of discharge.
Waste
The screening waste can thus be unloaded in a container. They can be also transferred to a conveyor or a transversal screw compactor integrated to the unit (Version STO/P).
Performances
Hydraulic flow rates with urban effluent (m3/h)
MESH (MM)STO 500STO 750STO 1000STO 1250STO 1500STO 1750
FROM 2 TO 60 MMFLOW RATES ARE DEPENDING OF CHANNEL WIDTH, MESH AND HYDRAULIC PROFILE (FLOW VELOCITY)
UP TO 7500 M3/H
Material

Construction in stainless steel 304L or 316L.

Dimensions
Overall dimensions in mm
ModelsDischarge height maxiTotal height maxiChannel width miniScreen widthMKS width with compactor
STO 5001500016150500370490 + 300
STO 7501500016150750620740 + 300
STO 100015000161501000860980 + 300
STO 12501500016150125011101 230 + 300
STO 15001500016150150013601 480 + 300
STO 20001500016150200018601 980 + 300
STO 25001500016150250023602 480 + 300

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