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Biwater Treatment - Products
Grit Removal
 

Products

Rotating Bar Interceptors
Coarse Screen
Grit Removal
Tank Scrapers
Aerators - Horizontal Rotor
Aerators - Vertical Shaft
•Medium Speed
•Slow Speed
Tertiary Treatment

Package Plants

Compact Plant
BiFad
Bipur

Grit Removal
10m dia cross flow installation at Duncrue Street, Northern Ireland
10m dia cross flow installation at Duncrue Street, Northern Ireland
 Key Features:
• Upto 70% solids reduction
• Continuous flow
• Optional air scour
• Backwash Indexing
• Low head loss
• Fully automatic

General Description:

Cross Flow Tanks
Standard size 2.5m to 10.0m diameter
Flows from 100 litres per second to 1850 l/sec
Particle removal size approximately 0.2mm

Travelling Grit Dredger
Suitable for 1 to 6 channels
Bridge mounted or submersible pumps
On/Off bridge classifying

Finnchain Channel Dredger
For smaller inlet channels
All plastic/stainless steel construction

Combined Grit/Grease Removal
Based on the spiral flow principal
Travelling bridge type unit
Flows baffled to promote grease separation/flotation

Screw Classifier
All stainless steel construction
Screw sizes 200, 300 and 400mm diameter
Capacities 30, 80 and 120m³/hour

Reciprocating Rake
Inclinations between 11° and 16°
Widths 380 & 800mm
Maximum length 20 metres
Travelling Grit Dredger - Constant-Velocity Channel
When the preferred grit plant arrangement is in the form of parallel constant velocity channels, the automatic method of settled grit removal is with a travelling bridge type pump dredging machine.
The design of the dredger type unit reflects clients’ specifications, but normally includes a travelling bridge supported on flanged bogie wheels running on a rail-track positioned to the concrete coping wall of the constant velocity channels. The bridge is fitted with grit dredging pumps, of either the self-priming centrifugal, or submersible type. These are arranged to discharge lifted grit into a bridge mounted cyclone washer and storage hopper, or alternatively, into a side concrete launder. This provides gravity flow to a remote grit classifying system, of the reciprocating rake type.

 Travelling Grit at Shieldhall WwTW, WOSW
Travelling Grit at Shieldhall WwTW, WOSW
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Tony Gillard
Business Development Manager
+44 (0)1706 367555

Reference Sites
• Duncrue Street WwTW, DOE Ireland
• Shieldhall WwTW, West of Scotland Water
• Holland Haven WwTW, Anglian Water
• Whitby WwTW, Yorkshire Water
Biwater Treatment Ltd Biwater Place, Gregge St, Heywood, Lancashire, OL10 2DX
T:+44(01706) 367555 F: +44(01706) 365598 e:info@biwater.com
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