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Screw Screen in Tank

Model SSB-mK

This packaged screw screen provides primary treatment for untreated sewage.
The SSB-mK screw screen is equipped with a stainless steel tank to allow installation where a concrete channel is not available. The tank is complete with flanged inlet and outlet pipe stubs.

The tank can be fitted with an optional bypass chamber (as contingency if the main screen overflows) fitted with a manually cleaned bar screen. The system includes screening compaction at the end of the conveying section of the screw.

Due to small footprint, minimal civil works required, and ease of installation, the Screw Screen in Tank offers a simple and low cost solution for small wastewater treatment applications and septage receival facilities.


ParameterUnitsSSB-mK-110 SSB-mK-160 SSB-mK-260 SSB-mK-390 SSB-mK-610 SSB-mK-830 
Treatment capacity*1With rounded holes Ø3m3/hr80122158320502690
With wedge wire0.25 mm173475115180220
0.5 mm456495170300340
1 mm5081135252350430
2 mm85100145303430580
3 mm112125187340505730
Inlet/outlet flange*3DN150200250300400500
Overflow outlet flange*3 (optional)100150200250350450
Installed motor powerkW0.550.750.750.750.750.75
Screw gear reducer speedrpm111111888
Screw inclinationdeg˚353535353535
Empty weightkg400440480570900990

*1Theoretical, calculated using clean water, *2Standard screen type & aperture, *3Flanges are lap joint max 15mm thick with holes P10 according to EN1092-1.



EquipmentStandard SupplyOptional Supply
Screw screen in tankRounded holes screen elementØ5mm aperture-
Custom aperture (3, 4, 5, 6 ,7 or 10mm)-
Wedge-wire screen element (0.25, 0.5, 1, 2 or 3mm)-
Integrated screenings compaction-
Screen basket cleaning, bolted nylon brushes-
PE breathing valve on screen tank-
PE pipe for returning liquid from compaction zone-
Squared outlet spout-
Bolted screenings compaction system cover-
Lifting eyebolts-
Nord drives with compact motor gearbox and cover guards-
Machine carpentry, inlet & outlet flanges, drive guards and anti-wear materials on screwSS304L, bolts A2 (SS304)-
SS316L, bolts A4 (SS316)-
Bypass ChamberManual bar screen10mm -
Rounded holesCustom aperture (3, 4, 5, 6 ,7 or 10mm)-
Wedge-wire 2 or 3mm-
Overflow from tank with flange -
ScrewHigh-carbon steel painted-
WashingCompaction zone only, with ½” manual valve-
Compaction zone with ½” manual valve and screening basket with 1” manual valve-
Manifold for compaction zone and screening basket, with 1” manual valve-
Automatic Longopac bagging system for screenings with 1x 80m long bag-
Drive motor premium efficiencyIP55 -
IP65 with thermistor overload protection-
Surface treatments*1-

*1Stainless steel parts: stripping with acid solution, passivation with glass particles, final surfaces cleaning with anti-dust oil. Carbon steel parts: sandblasting SA 2.5 for external anti-rust paint RAL 5015


Instrumentation & ControlsStandard SupplyOptional Supply
Safety limit switches for screen opening hatches-
Screen tank level sensor Conductive probe-
Solenoid valve kit(s) for selected washing system(s)-
Control panel, for external installation-✓