Sustainable Redevelopment of an Uncontrolled Dumping Site into an Integrated Waste Recycling and Treatment Centre, Moen, Belgium

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Sustainable Redevelopment of an Uncontrolled
Dumping Site into an Integrated Waste Recycling
and Treatment Centre, Moen, Belgium
Dr. S. Helsen Zagreb 25/11/2010
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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 pollution
(metals, salts,) landfill leachate constitutes
risk to environment and nearby waterway To
prevent further spreading ? soil remediation
project Hydrogeologically isolating entire
landfill site
Groundwater protection
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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
• 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) ? 1.6 billion kg
Production of electricity ? 600 m. kwh
Removal through landfill ? 1.5 billion kg
Selective collection of paper and cardboard ? 220 m.kg
Selective collection of glass bottles and jars ? 100 m. kg
Composting of green waste ? 300 m.kg
Producing and marketing of compost ? 75 million kg
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Collected quantities waste fractions civic
amenity sites

• Operation of 16 civic amenity sites
• Separate collection of 40 waste fractions
• Differential pricing applied
• pay according to type
• and quantity of materials
• following polluter pays,
• the preventer saves

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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
• gt 500 m³/hr
• combustion engine electricity
• lt 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
• 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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