Download - Dano drum presentation 080510
SEGHERS Dano DrumWaste Pre-Treatment Technology
11 April 2023© Keppel Seghers Group of Companies, 2009
• 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
Contents
• Waste pretreatment
– More efficient and effective plant
– More throughput
– Better operation
• Policies, trends and even economics change
• DANO DRUM = FLEXIBLE solution for
waste pretreatment
Waste management
Updating your perceptions
Materials recovery and recycling is high on the priority list of waste management strategies, certainly higher than incineration or land filling, which often meet public resistance.
The Keppel Seghers DANO Drum is ideally suited to precondition waste before final treatment.
Updating your perceptions
It 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.
Updating your perceptions
Waste is a heterogeneous mixture of different solid products such as paper, plastics, cardboard, metals, food waste, etc. The composition varies widely according to many parameters:
• Origin (households, industry,…) • Region or country • Living standards and habits • Time of the year (winter, summer, rainy season) • Waste collection method (bags, open containers.)
Waste disposal becomes a top priority for many local governments.
Updating your perceptions
In most countries the waste management strategy is a delicate mixture of ecological and economical interests and is based on the following principles, in decreasing order of priority:
• 1. Waste prevention • 2. Recycling into usable materials • 3. Composting• 4. Landfilling • 5. Energy recovery in Waste-to-Energy plants
What is waste?
• Technical: a product not longer wanted by its producerNote: 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, …
• 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
Contents
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
History
• 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
Contents
Seghers Dano Drum
The core of a waste pre-treatment installation is the 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.
SEGHERS DANO DrumBy Keppel Seghers, Inc
The Keppel Seghers DANO Drum Mark III has a length of about 79 ft and an internal diameter of 12.5 ft. An integrated screen is attached to the end of the drum.
Principle & Process Implementation
SEGHERS DANO DrumBy Keppel Seghers, Inc
Seghers DANO
Water or biosolids
MSW
Screen
Putrecibles
Metals
RDF
The following diagram shows a typical flow sheet of the Seghers Keppel DANO Drum:
SEGHERS DANO Drum
Oversize:Dry / high calorific waste,Approx. 55%
To WtE or Landfill
Undersize: humid putrecible waste,Approx. 45%
To Composting or Digestion
• 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
The Key Element
• Drum size
– Mark III drum: 3.8m (12.5 ft.) diameter –
24m (79 ft.) length
• Drum Capacity:
– 20 tons/hour of Municipal Waste
• Rotation of the Drum
– 1.0 rpm up to 4.8 rpm
– Breakdown of Softer Components by Particle Collision
and Attrition
– Repeated Contact With the Drum Wall and Harder
Elements
The Key Element
The Key Element - typical lay-out
• High quality electro-hydraulic 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
The Key Element - Features
Construction
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%
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
The Key Element - Advantages
• 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
Contents
Overview of process options
• 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
Contents
Bulk Reduction - Landfill - Transfer Station
• Pulverization Increases the Bulk Density by 2-3.
– Savings of Transport Costs
– Extending the Life Time of Landfills
– Faster biological stability of Landfills
– Separate fine fraction for landfill cover
• Faster Methane Production Compared to Crude Landfill
– Earlier Stabilization Period
– Improved Commercial Exploitation
Bulk Reduction - Benefits
Principle & Process Implementation
The rotation of the drum imparts a tumbling action to its contents, which leads to a breakdown of the softer components by particle collision and attrition as they repeatedly contact the drum wall and harder elements in the mixture.
Principle & Process Implementation
The DANO system was originally designed as an aerobic composting system for municipal waste, either alone or in a co-composting process with sewage sludge.
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:
SEGHERSdano drum RDF
ORGANIC
Waste to Energy
RDF Baling for transport orstorage
Metalsrecovery
AerobicComposting
Dry AnaerobicDigestion(Biogas)
Wet AnaerobicDigestion(Biogas)
Landfill cover
Final Residues: Landfill orIncineration
MunicipalSolidWaste
Sludge
NonhazardousIndustrialWaste
Water
Landfill
• Soil Improvement and Cover Material for Landfill
– No Need for Importing Cover Material
– Immediate Saving
– More hygiene and less vector attraction
Landfill waste pretreatment
• Readily available RDF fluff and organic waste
streams
• Most of the metal fraction concentrated in DANO
DRUM “metal rich” fraction
• Fine material is fibrous and solid (not “pulped”)
resulting in good handling properties
• Simple, reliable system with low maintenance
Materials Recovery - Benefits
• 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
Biological treatment - advantages
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.
Protection and Reliability
In order to protect the drum from wear, Keppel Seghers DANO Drum uses a system which causes pulverized elements in the refuse to form a deep lining around the total internal periphery of the drum. This completely protects the cylinder shell and has proved to be extremely successful in ensuring, with minimum maintenance, a virtually everlasting life for the drum.
Unique and Different
The flexible process implementation allows for a change in secondary resource markets and values.
It also copes with future policy changes due to public appreciation and the evolution of final treatment technologies.
This is not only a major advantage, it is also a necessity when considering the long lifetime of a Keppel Seghers DANO Drum.
• Energy Recovery Out of pulverized MSW:
– More homogeneous than non-treated waste
– Leading to higher efficiency and throughput, and
better plant control
• Energy Recovery Out of RDF fraction
– High calorific value
– More homogeneous than non-treated waste
– Potentially better burnout
Feedstock for EfW Installations
• Smoother Operation and More Stable Steam
Flow
• Easier Operation and Automation of the Plant
• Automatic Feeding of the Waste is possible
• Higher design throughput of waste
• Higher Public Acceptance
Feedstock for EfW Installations - Advantages
Waste to Power - MSW - 1 dayWith 5-10% higher averaged throughput by SEGHERSdano
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0 12 24hours
Th
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Feedstock for EfW Installations
• 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
Contents
Italy - Rossignano MarittimoKeppel Seghers DANO DRUMPlant Capacity: 15 tonnes/hour
• Materials Recovery• RDF baling• Pre-composting
References
UK - Manchester
Total Capacity:160-200 tonnes/hour
Integrated operation:• Materials Recovery• RDF production• Biological pretreatment• Soil forming product • Energy crops• Landfill cover
References
Brasil - Sao PauloDANO DRUM
References
USA- Rapid City South Dakota
References
FranceDANO DRUM
References
© Keppel Seghers Group of Companies, 2009
[email protected] www.keppelseghers.comKeppel Seghers Inc. 1235-F Kennestone CircleMarietta, Georgia 30066 phone: (770) 421-1181 fax: (770) 421-8611
© Keppel Seghers Group of Companies, 2009 - MStore_3P_en_004_B
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