Dr. S. Helsen Zagreb 25/11/2010

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

2. Intermunicipal Organisation IMOG Intermunicipal waste organisation in Flanders (BE): 11 municipalities pop. 227.000 Yearly turnover 26 million euro (2009) 200 employees 2

3. IMOG Objectives Treatment of household waste through sustainable waste management 3

4. Overview landfill expansions and current activities • Initiatives reduce and recycle waste • Business plan • for expansion • of landfill • Old landfill covered and remediated 4

5. 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 5

6. 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 6

7. 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 7

8. 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 8

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10. Visual hindrance Green buffer of 6 m wide Integrated in existing landscape Maximizes ecological potential with native plants Corridor for local faunas 10

11. Management of waste fractions 11

12. 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’ 12

13. 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 13

14. 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 14

15. 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 15

16. 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 16

17. 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 17

18. 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 18

19. 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 19

20. 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 20

21. 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 21

22. Conclusion • Waste : • Source for secondary materials and renewable energy • Creates job opportunities and profits • Management demandsinvestment with risks • Management requires technical skills, technology, organization and monitoring 22

23. Thank you for the attention ECOREM NV / SA Headquarters: Kontichsesteenweg 38 Keizer Karellaan 292B 16 Place de l’Université B – 2630 Aartselaar Av. Charles Quint 292B B – 1348 Ottignies T +32 3 871 09 00 B – 1083 Brussel/ Bruxelles T +32 10 48 35 03 F +32 3 871 09 01 T +32 2 800 00 10 info@ecorem.be www.ecorem.be Ecorem is a member of the Exequtes Group – www.exequtes.eu