Transcript Slide 1

Sustainable Redevelopment of an Uncontrolled
Dumping Site into an Integrated Waste
Recycling and Treatment Centre, Moen,
Belgium
Dr. S. Helsen
Zagreb
25/11/2010
Intermunicipal Organisation IMOG
Intermunicipal waste
organisation in
Flanders (BE):
11 municipalities
pop. 227.000
Yearly turnover
26 million euro (2009)
200 employees
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IMOG Objectives
Treatment of household waste through sustainable
waste management
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Overview landfill expansions
and current activities
Initiatives reduce
and recycle
waste
Business plan
for expansion
of landfill
Old landfill
covered and
remediated
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Clay quarry & landfill expansion
Excavation of
quarry for brick
industry
Excavated clay
reused as seal
Covered landfill
partly
developed as
treatment centre
for dredged
sediments
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Secondary use covered landfill
Delivery of cat. 1 waste (industrial waste) reduced
Emphasis on cat. 2 waste (mainly household waste)
Groundwater protection
Groundwater pollution (metals, salts,…) landfill leachate
constitutes risk to environment and nearby waterway
To prevent further spreading  soil remediation project
Hydrogeologically isolating entire landfill site
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Groundwater protection
Impermeable cement-bentonite slurry wall
around landfill site
Wall to depth of 20 m below groundsurface
Quality control procedure to ensure depth
was reached
Groundwater flow and water levels
calculated by modeling and compared to
field data
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Wastewater treatment
Wastewaters evacuated to biological treatment plant:
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Rain
Water seeping through the landfill
Runoffs
Wheel washing residues
Domestic waste water
Optimal treatment efficiency through operated
and monitored facility
BATNEEC principles
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Visual hindrance
Green buffer of 6 m wide
Integrated in existing landscape
Maximizes ecological potential with native plants
Corridor
for local faunas
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Management of waste fractions
Processing through incineration (Harelbeke site) 
Production of electricity 
Removal through landfill 
Selective collection of paper and cardboard 
Selective collection of glass bottles and jars 
Composting of green waste 
Producing and marketing of compost 
1.6 billion kg
600 m. kwh
1.5 billion kg
220 m.kg
100 m. kg
300 m.kg
75 million kg
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Collected quantities waste
fractions civic amenity sites
12000
Operation of 16 civic
10000
amenity sites
8000
Separate collection of 40
waste fractions
6000
Differential pricing applied:
 pay according to type
and quantity of materials
 following ‘polluter pays,
the preventer saves’
4000
2000
0
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Sorting centers for bulky waste
Sorting centers for:
 bulky waste sorting line
 wood waste sorting
 cleaning line
Manual and mechanical
sorting for:
 paper and cardboard
 inert building materials
 wood, plastics, ....
Non-recyclable fraction
sent to compactor
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Wood sorting centre
Wood waste segregated
into:
 untreated
 treated,
uncontaminated
 contaminated
Crushed and sieved into
fractions
Used as biomass for
energy and/or MDF wood
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Composting
Green waste sorting and processing important
Respond to demand
 new equipment: trucks, sieving and shredding
machinery
 new composting and maturation areas constructed
 building of area for sieved compost
 quality label developed and compost market explored
30.000 ton green waste to composting installation
13.000 ton compost and 3000 ton wood chips sold on
local market
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Treatment street & sweep refuse
Street sweep refuse picked up by brush or sweep trucks
Litter, sand, leaves and small branches
Optimization of waste sorting line
Waste cleaned and segregated:
 sand fraction  reused as a secondary raw material
 plastic
 metal
 green waste
 combustible waste
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Treatment dredged sediments
High demand treatment dredged sediments from
navigable and non-navigable waterways
Development of treatment centre for dredged sediments
Dredged sediments :
 Arrive by ship over the adjacent waterway
 Dewatering
 Material excavated and removed once dry
 Use for final landfill cover or as filling materials
in road constructions or noise barriers
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Biomass centre
1999  selective collection, sorting and treatment
of wood waste
Wood collected at civic amenity sites: recycled
(production of MDF board)
2005  non-recyclable wood: biomass power plant
(green energy)
Every year 30.000 ton of biomass produced =
41 million kWh = electric consumption for pop. 32.000
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Potential landfill gas extraction
12 vertical wells &
Horiz. HDPE pipes
to central location
> 500 m³/hr
combustion engine
electricity
< 500 m³/hr:
Micro turbine
electricity
Flare system
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Solar energy park
Landfill closed: after care and monitoring for 30 yrs
Site developed cfr. local / regional planning regulations
2 ha of solar panels on old landfill
Electrical energy used on site; excess: through the grid
Entire landfill ‘closed’
 10 ha of photovoltaic cells
 Energy for 1500 families
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Exporting forty years
of knowhow
Success based on :
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Use of various communication methods
Public awareness
Education encouraging waste prevention and
Improving sorting at source
Secondary materials quality
Creates social basis for waste management practices
Aim: export technical and operational knowledge
Collaborations with EU partners in transitional and
developing countries, incl. Western Balkans
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Conclusion
Waste :
Source for secondary materials and renewable energy
Creates job opportunities and profits
Management demands investment with risks
Management requires technical skills, technology,
organization and monitoring
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Thank you for the attention
ECOREM NV / SA
Headquarters:
Kontichsesteenweg 38
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Keizer Karellaan 292B
Av. Charles Quint 292B
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T +32 2 800 00 10
[email protected]
www.ecorem.be
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