The document describes HUBER's ROTAMAT Ro5 headworks system, which integrates fine screens, grit removal, and screenings treatment into a compact unit. The ROTAMAT Ro5 can handle flows from 10-300 l/s and includes a rotary drum fine screen, grit trap, and integrated screenings washing for higher removal rates and reduced disposal costs. It provides effective pretreatment with high capture of screenings and grit to protect downstream processes.

1. Compact & Complete Plant: ROTAMAT® Ro5
a new concept in headworks systems
A.T.E. HUBER Envirotech Private Limited
www.atehuber.com
v4.0 Dec 2020

2. Headworks system
Headworks system includes:
1. Fine screens
2. Belt conveyor
3. Screenings treatment
(dewatering and compaction unit)
4. Grit trap
5. Grit classifier
6. Separation and removal of fat
and grease
All these are to be installed in a
concrete channel and tank.
Source: www.wwm.prima.gov, 12/2013

3. HUBER complete plant ROTAMAT® Ro5
▪ ROTAMAT® Ro5 is a complete
mechanical wastewater treatment
plant consisting of:
▪ Inlet screen with rake, wedge weir
or perforation; separation cut from
1 to 10 mm
▪ Integrated screenings treatment
system
▪ Grit trap (aerated or unaerated)
designed according to DWA (ATV)
▪ Grease chamber with automatic
enforced grease removal (optional)
▪ Grit transport and classification
(dewatering) system
▪ Hydraulic throughput from 10 to 300
l/s
▪ Grit separation efficiency for any
requirements:
e.g. 90 % of grain size 0.20 – 0.25
mm

4. Screens used in ROTAMAT Ro5 –
HUBER rotary drum fine screen ROTAMAT® Ro2
▪ Up to 300 l/s
▪ One dimensional screening
▪ 2 to 6 mm bar spacing (wedge wire)
▪ Rotating drum with spray bar and brush
Rotating screen basket

5. Screens used in ROTAMAT Ro5 –
HUBER perforated plate screen ROTAMAT® RPPS
▪ Up to 300 l/s
▪ Two-dimensional screening
▪ 1 mm to 6 mm perforated plate
▪ Rotating drum with spray nozzle bar and brush
Rotating screen basket

6. Screens used in ROTAMAT Ro5 –
HUBER fine screen ROTAMAT® Ro1
▪ Up to 300 l/s
▪ One dimensional screening
▪ 6 or 10 mm bar spacing
▪ Static drum with moving rake/comb
▪ Preferred screen for septic sludge or tanker waste sewage
Rotating screen basket

7. Screens used in ROTAMAT Ro5 –
HUBER microstrainer ROTAMAT® Ro9
▪ Up to 80 l/s
▪ One and two-dimensional screening
▪ 1 mm to 6 mm bar spacing (wedge wire)
▪ 2 mm to 6 mm perforation
▪ Static screen basket with moving screw/brush
▪ Preferred screen for low flows/small packages
Rotating screw and stationary
screen basket

8. Screenings treatment –
Integrated screenings washing system (IRGA)
Advantages
▪ Easy to retrofit
▪ Reduced disposal costs
▪ Weight reduction by approx. 50%
▪ Dewatering performance of up to 40% DS
▪ Improved operation and hygienic conditions
Integrated screenings washing system installed on ROTAMAT screen Press zone into ROTAMAT Treated screenings
▪ To optimise the treatment process, integrated screenings washing
system IRGA can be provided for every ROTAMAT screen
▪ Soluble matter is separated from the inert material and faeces are
completely washed out which leads to a significant weight reduction

9. Advantages of using ROTAMAT screens in Ro5
▪ Ensures best conditions for further wastewater
treatment
▪ High capture rate of screenings
▪ no rags on membranes
▪ no clogging in pumps
▪ no problems in digestor
▪ Less disposal weight and cost due to screenings
washing & dewatering
▪ High grit removal
▪ no wear in pumps
▪ no settlement in biology & digestor
▪ High resistance due to stainless steel

10. ▪ Standardised longitudinal grit trap consisting of:
▪ Grit trap designed according to ATV (unaerated or
aerated)
▪ Grease chamber with automatic enforced grease removal
(optional)
▪ Grit removal by means of a horizontal screw conveyor
▪ Grit classification system
▪ Throughput up to 300 l/s
▪ Grit trap separation efficiency: 90% of grain size 0.20 - 0.25
mm
▪ Optional combination with grit washing with grit washer RoSF4
Grit trap, above ground installation
HUBER longitudinal grit trap ROTAMAT® Ro 6

11. HUBER longitudinal grit trap ROTAMAT® Ro 6 – advantages
▪ Flexible dimensions ensure best solution for customers
▪ High grit capture rate (90% of grain size 0.20 – 0.25 mm)
▪ Adjustable aeration lances along length of the trap
▪ More than 3,000 installations worldwide
▪ Long lasting or durable internal components (stainless steel
screws, shells, sealing)
▪ Optional:
▪ Grit removal with classifying screw or grit pump
▪ Grease separation and removal with advanced equipment
▪ Organic removal with grit washer

12. HUBER complete plant ROTAMAT® Ro5 – Sample installations
More than 100 installations worldwide; below are a few examples

13. THANK YOU