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.


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.


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.


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, …



History

The Key Element


Main Applications

-Bulk Reduction

-Materials Recovery



• 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



History

The Key Element


Main Applications

-Bulk Reduction

-Materials Recovery


-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



History

The Key Element


Main Applications

-Bulk Reduction

-Materials Recovery


-Feedstock for WTE

Installations

• 3. References

Contents

Overview of process options



History

The Key Element


Main Applications

-Bulk Reduction

-Materials Recovery


-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


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.


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

0

10

20

30

40

50

0 12 24hours

Th

erm

al In

pu

t (M

W)

Feedstock for EfW Installations



History

The Key Element


Main Applications

-Bulk Reduction

-Materials Recovery



• 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

http://www.keppelseghers.com/

© Keppel Seghers Group of Companies, 2009 - MStore_3P_en_004_B

QUESTIONS ?