The Keppel Seghers DANO DRUM is a key element in waste pre-treatment. It is a horizontally mounted, rotating steel cylinder that shreds, mixes, conditions, and sorts waste into components for recycling, composting, or energy recovery. It allows maximum materials recovery while producing a fuel and pre-treating organic waste. A case study highlights how Rapid City, SD extended its landfill life by over 25 years using a DANO DRUM to process municipal solid waste and biosolids.

1. SEGHERS Dano Drum
Waste Pre-Treatment Technology
26 Ju ne 201 2
© Keppel Seghers Group of Companies, 20012

2. Contents
•1. The Keppel Seghers DANO DRUM
History
The Key Element
Process Implementation
Main Applications
-Bulk Reduction
-Materials Recovery
-Biological treatment
-Case Study: Rapid City, SD
•2. References

3. History
1. DANO Denmark
Composting since 1939
2. DANO Switzerland (1972)
Composting/separation/pulverisation
3. DANO Motherwell Bridge UK (1986)
Biological treatment - separation-pulverisation -
Materials Recycling Facility
4. DANO (1999)
Materials Recycling Facility – separation -pulverization -
Biological treatment – Waste-to-Power

4. Updating your perceptions
DANO allows a maximum recovery of recyclable
materials, an ideal pretreatment of the organic
fraction prior to biological treatment and at the same
time produces an excellent RDF type of fuel.

5. What is waste?
• Technical: a product not longer wanted by its producer
Note: it can still be a valuable raw material to others!
• Economical: a product for which one has to pay to dispose of
• Legal: “each matter or object of which the owner wants , plans or has
to dispose of”
• Different categories of “waste” according to source, physical &
chemical composition, size, …

7. Keppel Seghers Dano Drum
The core of a waste pre-treatment installation is the
KEPPEL SEGHERS Dano Drum for waste conditioning.
The drum is a horizontally mounted, rotating steel
cylinder which automatically shreds, mixes, conditions
and sorts the refuse into components for either
recycling, composting, or incineration with energy
recovery.

8. DANO Drum Mark III
By Keppel Seghers, Inc
The Keppel Seghers DANO Drum Mark III has a length of about 24-27 meters (79-89 ft.) and
an internal diameter of 3,8 meters (12.5 ft.). An integrated screen is attached to the end of the
drum.

9. ANO Drum AD MODEL

10. ENTRANCE HOPPER AND INPUT
CONVEYOR (By Gravity Flow)

11. ENTRANCE HOPPER AND INPUT
CONVEYOR (By Ram Feeder)

12. Live Ring and Rollers (Trunions)

13. Dano Drums 1,2 to 4,8 RPM
Extremely Efficient and Dependable

14. DETAILED GIRTH IN ASSEMBLY
PHASE

15. GEAR UNIT ASSEMBLY AND AUXILIARY
EQUIPMENT: LUBRICATION GREASE UNIT
AND BRAKE

16. Drive Unit & Variable Frequency Drive
The Drive Unit is situated next to the Gear Ring of the Keppel Seghers
Dano Drum. The unit is formed by a “tandem” type reductor with parallel
axles. It also has a mechanical break pad (with electrical blockeage) in
order to avoid the movement of the Drum, and its load, when stopped.

17. Drive Unit & Variable Frequency Drive
A VFD regulates the speed of the electrical motor. The unit can give
variable speeds of 1,2 RPM, 2,4 RPM, 3,6 RPM, and up to 4,8 RPM if the
customer requests it.
The electrical motor is directly coupled by a shaft to the reductor, which in
turn, is coupled to the pinion, and the pinion directly coupled to the gear
ring of the Dano Drum. The coupling between the motor shaft and the
main reductor shaft is done through an elastic coupling.

18. GEAR UNIT ASSEMBLY AND AUXILIARY
EQUIPMENT: HYDRO-ELECTRIC
PROPULSION

19. SIEVE ELEMENT AT THE END OF DANO DRUM
40 MM HOLES AND LENGHT 6,6 METRES

20. SIEVE ELEMENTS AT THE END OF DANO DRUM
LENGHT 2,6 METRES

21. Protection and Reliability
A number of triangular shaped projections are fitted in the Keppel Seghers
DANO Drum to help prevent the formation of bundles of textiles.

22. Contents
• 1. The Keppel Seghers DANO DRUM
History
The Key Element
Process Implementation
Main Applications
-Bulk Reduction
-Materials Recovery
-Biological treatment
-Case Study: Rapid City, SD
• 2. References

23. The Key Process Element
• Waste pretreatment
– Pulverizing
– Homogenizing
– Conditioning
– Separating
• Horizontally Mounted, Rotating Steel Cylinder
• Integrated Rotary Screen option
– 2 or 3 Fractions readily separated at end of
drum

24. The Key Element
• Drum size: Mark III drum: 3.8 m (12.5 ft.) diameter. 24-27 m
(79-89.3 ft.) length
• Drum Capacity:
– MK III: 15-18 tons/hour of Municipal Solid Waste
• Rotation of the Drum
– MK III: 1.2 RPM up to 4.8 RPM.
– Breakdown of Softer Components by Particle Collision and
Attrition
– Repeated Contact With the Drum Wall and Harder
Elements

25. The Key Element - Features
• High quality electro drive system
• Special Anti-wear system for drum shell
• Result of decades of construction experience
• Unique inlet assembly construction
• Hydraulically operated outlet slide gate
• Integrated screen

26. The Key Element - Advantages
EXTREMELY RELIABLE
Example in UK: North Ayrshire Council - Irvine, Scotland,
operation period of 18 years:
Unscheduled downtime in % of total operating time:
electrical 0.1%
mechanical 0.5%
TOTAL 0.6%
TOTAL AVAILABILITY = 99.4%

27. The Key Element - Advantages
• Increases organic content of fines through
paper/carton attrition
• Keeps heating value of oversize
• Extremely reliable
• Flexible process implementation
• Simple operation
• Low maintenance

28. Contents
• 1. Waste management
• 2. The Keppel Seghers DANO DRUM
History
The Key Element
Process Implementation
Main Applications
-Bulk Reduction
-Materials Recovery
-Biological treatment
-Case Study: Rapid City, SD
• 3. References

29. Overview of process options

30. KEPPEL SEGHERS DANO Drum
By Keppel Seghers, Inc
The following diagram shows a typical flow sheet of the Seghers Keppel DANO Drum:
Water or biosolids Screen
MSW
Seghers DANO
Putrecibles
Metals
RDF

31. Principle & Process Implementation
Main Applications
-Bulk Reduction
-Materials Recovery
-Separation of Organic Fraction (Unders)
and the High Calorific Value Fraction (Overs)
- Biological Treatment (pre-activation of
the material without losing any of its
“biological energy” for biomethanisation
and/or composting)

32. Principle & Process Implementation
This diagram shows the possibilities of mixing different wastes at the input of the Keppel Seghers DANO Drum system, as
well as the different possibilities for the outlet streams:
Water Sludge Waste to Energy
Municipal Landfill
Solid SEGHERSdano drum RDF
Waste
RDF Baling for transport or
storage
Nonhazardous Metals
Industrial ORGANIC recovery
Waste
Dry Anaerobic Wet Anaerobic Aerobic Landfill cover
Digestion Digestion Composting
(Biogas) (Biogas)
Final Residues: Landfill or
Incineration

33. KEPPEL SEGHERS DANO Drum
Oversize:
Dry / high calorific waste,
Approx. 55%
To WtE or Advanced Conversions
Undersize:
humid putrecible waste,
Approx. 45%
To Composting or Digestion

34. Biological treatment - Advantages
• attrition of paper and cardboard increases biogas
production for anaerobic digestion
• relatively low contamination of organic waste stream
• increased digestion feed rate from same amount of
Municipal Solid Waste with high-organic stream
• good material handling properties (fibrous material)
• reduced particle size and homogeneous

35. PROJECT HIGHLIGHTS - TECHNICAL

36. WASTE COMPOSITION
Input description
Input material description (Rapid City)
Plastic Textil Wood Metals Glass/stones Organic (Cardboard included)

37. OVERS - WASTE COMPOSITION
Overflow description (>45mm)
Output material description >45mm
(Rapid City)
Plastic Textil Wood Metals Glass/stones Organic (Cardboard included)

38. OVERS - WASTE COMPOSITION
Sunk description (>45mm)
Output material description <45mm
(Rapid City)
Plastic Textil Wood Metals Glass/stones Organic (Cardboard included)

39. MASS BALANCE
Loses .
7.39%
.
Overflow
45.96%
unders
Sunk
46.64%
46.64%
Plastic
Textil
Wood
Metals
Glass/stones
Organic

40. Tip Floor – Rapid City MRF @1,858 square
meters 180 – 200 TPD of MSW

41. Dano Infeed Biosolids at @ 30 – 50
GPM
12,000 to 18,000 gallon per day

42. Dano Discharge Screens 150 MM
and 45 MM screens

43. RAPID CITY – IPS/SIEMENS COMPOSTING
SYSTEM
06/26/12

44. CASE STUDY: Rapid City, SD

45. CASE STUDY: Rapid City, SD
As you can see on the last slide, even though we are
adding around 16,000 gallons of biosolids (+/_ 8% Total
Solids) to the incoming MSW (25% incoming moisture).
The Overs will finish with a 13,7% moisture.

46. CASE STUDY: Rapid City, SD
The excess moisture has being absorbed by the Organic
Fraction in helping break down the cardboard and paper
in the MSW. Having as a result a cleaner and dryer RFD
and a better C:N ratio on the Organic Fraction

47. Rapid City, South Dakota
• Solid Waste Division, Public Works
• All revenue from tip fee and sale of recyclables
• 1 plant supervisor
• 1 plant operations chief
• 1 plant engineer
• 3 mechanics
• 7 operators
• 8 laborers

48. Summary
• Landfill life extended from the year 2027 to 2053
• Biosolids issue solved
• 55% to 65% of what was traditionally landfilled,
will be reused or recycled
• We have secured a long term utility that is cost
effective
06/26/12

49. Contents
• 1. Waste management
• 2. The Keppel Seghers DANO DRUM
History
The Key Element
Process Implementation
Main Applications
-Bulk Reduction
-Materials Recovery
-Biological treatment
-Feedstock for WTE Installations
• 3. References

50. References
• Materials Recovery
• RDF baling
• Pre-composting
Italy - Rossignano Marittimo
Keppel Seghers DANO DRUM
Plant Capacity: 15 tonnes/hour

51. References
UK - Manchester
Total Capacity:
16-20 tonnes/hour
Integrated operation:
• Materials Recovery
• RDF production
• Biological pre-treatment
(AD ENPURE System)

52. References
USA- Rapid City
South Dakota

53. References
SPAIN – La Rioja

54. References
QATAR – Doha

55. info_USA keppelseghers.com •
www.keppelseghers.com
Keppel Seghers Inc.
1235-F Kennestone Circle
Marietta, Georgia 30066
phone: (770) 421-1181
fax: (770) 421-8611
© Keppel Seghers Group of Companies, 2012

56. QUESTIONS?
© Keppel Seghers Group of Companies, 2012