Technology Overview

Untreated sewage first passes through a screw screen, which effectively removes larger floating and suspended materials, known as screenings. The screened sewage then flows into a longitudinal sedimentation tank where sand and other heavy particles, referred to as grit, settle out and are removed by a system of screws.

A horizontal shaftless grit conveying screw transports settled grit to the sump. Grit is then removed from the sump via a shafted extraction screw which lifts the grit from the tank for discharge into a bin. Additionally, the system can be configured to remove fats, oils, and grease (FOG), offering enhanced treatment where required.

Key Features

  • Small footprint & minimal civil works
  • Ease of installation and operation
  • Low operating costs and maintenance
  • Low organic matter in the solid residue extracted
  • Reduction up to 40% in volume of solids removed
  • No odours

Technical Specifications

Standard Specifications


Parameter

Units

ICE-03

ICE-06

ICE-08

ICE-13

ICE-17

ICE-22

ICE-28

ICE-33

ICE-42

Treatment Capacity*L/s152030456080100120150
DimensionsTotal length (A)mm3,7805,3506,9556,9557,1208,61511,90013,41016,410
Total height (B)2,7802,7803,0553,6404,2204,2204,3405,2355,235
Inlet height centreline (C)1,4001,4001,4001,9001,9001,9001,9002,4702,470
Outlet height centreline (D)1,1001,1001,1001,6001,6001,6001,6002,2652,265
Discharge chute height (E)1,3251,3251,3251,7001,7001,7001,7001,7001,700
Settling tank height (M)1,6001,6001,6002,1802,1802,1802,1802,7702,770
Setting tank width9719719719969969961,3111,3111,311
Inlet/outlet flange*2DN200200250250300350400450500
Empty weightkg1,1001,2501,4001,9502,2002,3502,8006,8007,200
Screw screen in tankScreen model*SSB-mK160260390390610610830830830
Loading basket Ømm273356456456616616712712712
Shaftless screw for transport & compaction219219219219323323323323323
Gear reducer speedrpm1111111188888
Grit systemHorizontal transport shaftless screw Ømm180180180280280280280280280
Shafted extraction screw168168168219219219219273273
Horizontal screw gear reducer speed rpm555555555
Extraction screw gear reducer speed555555555
Installed power*4, 5K1kW0.550.550.550.550.550.550.550.750.75
K20.750.750.750.750.750.750.750.750.75
K30.370.370.370.370.370.370.370.370.55
K4 (ICEd model only) (optional)0.250.370.370.370.370.370.370.370.37
Side channel blower (optional) 0.250.750.750.750.750.751.11.11.1


*1Theoretical, calculated using clean water; reference design basis: influent TSS 500 mg/L with up to 0.5% grit; typical performance: up to 90% removal efficiency for grit particles >200 μm and density > 1,650 kg/m3, *2Flanges are lap joint max 15mm thick with holes P16 according to AS4087, *3Refer to MAK Water product data sheet SSB-mK for more details, *4 Refer to schematic, *Based on machine configuration, motor power could be different

Standard Inclusions and Options

= Standard Supply- = Not Applicable

Equipment

Standard Supply

Optional Supply

Screw screen in tankRounded holes screen elementØ6mm aperture-
Custom aperture (3, 4, 5, 7 or 10mm)-
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 gearboxes and cover guards-
Machine carpentry,inlet & outlet flanges, drive guards and open channel discharge chutes SS304L, bolts A2 (SS304)-
SS316L, bolts A4 (SS316)-
Bypass Chamber with 10mm manual bar screen-
Overflow from screen tank with flange*2-
Odour extraction port from tank with flange *2-
Enclosed pipe discharge chutes for screenings & grit-
All screws / anti-wearmaterial (bolted plateson screws)High-carbon steel painted / SS304L-
SS304L / SS304L-
SS316L / SS316L-
WashingCompaction zone only, with ½” manual valve-
Compaction zone with ½” manual valve and screening basket with 1” manual valve-
Compaction zone with ½” manual valve and for grit with ½” manual valve-
Compaction zone with ½” manual valve and screening basket with 1” manual valve and for grit with ½” manual valve -
Air sparging system for grit complete with blower and pipework*1-
Automatic Longopac bagging systems for screenings and grit with 1x 80m long bag each-
Drive motors premium efficiencyIP55 -
IP65 with thermistor overload protection-
Surface treatments*3-

*1Standard air blower system includes: motor TEFC premium efficiency IP55 with thermistor, 1” fittings with SS hoses, retention valve, pressure valve, pressure switch, suction filter, wiring & full installation, outdoors side installation, no additional protective covering, *2 Lap joint flange with holes PN16 according to AS4087 *3Stainless 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 & Controls

Standard Supply

Optional Supply

Safety limit switches for screen opening hatches-
Screen tank level sensor Conductive probe-
Ultrasonic-
Solenoid valve kit(s) for selected washing system(s) 24VDC-
Mechanical over-torque protection for all drives (backlash free-ball model)-
Wiring of all equipment and instrumentation to a junction box-
Control Panel, to AS/NZS3000 for external installation (supplied loose)-

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