Technologies and Management of Municipal Solid Waste in Thailand: Status Quo and Current Developments
Dr. Jochen Amrehn
King Mongkut’s Institute of Technology Ladkrabang
Integrated Resource Management in Asian Cities: the Urban Nexus Bangkok, 24.6.2013 – 27.6.2013
1 General Information
ò Inhabitants: 69,122,234 ò Population of Capital (2009): 7,025,000 (official figure) ò Population of BMR (2009): 12,177,000 (estimated ) BMR ò 76 Provinces ò 1277 municipalities and ò 6636 SAO’s in Thailand (Subdistrict Administrative Organizations or Thesaban)
2 Distribution of Authorities for MSW
Royal Thai Government
Central Government Regional Governments Local Governments
Formulate policies, Coordinate related Handle waste guidelines, programs, works between central management within regulations and and local governments governed area standards
Implementing Unit
3 Dr. Jochen Amrehn, Bangkok 25.6.2013 Generation of MSW
Region 2005 2006 2007 2008 2009 2010
Bangkok 8,291 8,403 8,532 8,780 8,834 8,766 Special Zone Pattaya 12,635 12,912 13,600 14,915 16,368 16,620 Central and Eastern Region 5,499 5,619 5,780 5,258 5,830 5,918 Northern Region 2,148 2,195 2,346 2,931 3,255 3,315 North-Eastern Region 2,906 2,970 3,167 4,267 4,700 4,768 Southern Region 2,082 2,128 2,307 2,459 2,583 2,619 Outside Municipalities 18,295 18,697 18,200 17,369 16,208 16,146
Whole Thailand 39,221 40,012 40,332 41,064 41,410 41,532
Pollution Control Department , Annual Report, 2011
4 Dr. Jochen Amrehn, Bangkok 25.6.2013 Thai MSW
ò High amount of organics (>50%) ò Water content > 50% ò High amount of small plastic bags ò Little amount of recycling materials 5 ò Calorific value low (3-4 MJ/kg) Dr. Jochen Amrehn, Bangkok 25.6.2013 Improper Disposal
6 Dr. Jochen Amrehn, Bangkok 25.6.2013 Municipal Solid Waste (MSW)
7 Dr. Jochen Amrehn, Bangkok 25.6.2013 Collection Rate
8 Dr. Jochen Amrehn, Bangkok 25.6.2013 Waste Flow
Saleng
9 Dr. Jochen Amrehn, Bangkok 25.6.2013 Waste Flow
Transfer Station
Dump site / landfill 10 Dr. Jochen Amrehn, Bangkok 25.6.2013 Waste Flow outside Bangkok
Composting Household Household Household Animal Feed
Illegal Dumping Burning Waste Bin
Informal Collectors (Saleng)
Garbage Collection OBOTO
Collecting Company
Landfill Washing and Dump, MBT Repacking Company
<1% Recycling Company Scavengers
Public sector Recycling Quota Government <1% Private and informal sector 11 Private and informal sector Ai Hiramatsu et al., Waste Manag Res 2009; 27; 951 Wongpanich (Recycling Materials)
ò Founded in 1974 ò Over 400 branches in Thailand ò Buys recycling materials ò Located at good locations ò Franchising 12 Dr. Jochen Amrehn, Bangkok 25.6.2013 Waste Treatment Technologies
13 Dr. Jochen Amrehn, Bangkok 25.6.2013 MSW Treatment
ò Landfill / open dumps – Number of operating sanitary landfills: 93 – Number of landfills that never opened: 8 – Number of landfills that have been closed: 6 – Number of open dumps: 330 (official) ò Incinerators: 3 – Phuket : 250 t/d currently extended to 850 t/d – Koh Samui: 150 t/d (only partially operational) – Lampang: 6 t/d – Bangkok 500 t/d (under construction) ò Integrated Waste Management: 3 14 Dr. Jochen Amrehn, Bangkok 25.6.2013 Incinerators
Phuket Koh Samui
15 Dr. Jochen Amrehn, Bangkok 25.6.2013 Economic Models
ò Government operated ò BOT (Build-Operate-Transfer) – Private investor – License from government for treatment of MSW ò x years (10 -30), y tons/day, z Baht/t tipping fee – Private investor has to recover investment, o&m costs and profit from treatment process
16 Economic Models
Tipping Fee Electricity Recycling materials Reduced disposal costs 17 Dr. Jochen Amrehn, Bangkok 25.6.2013 Income Distribution
Energy
Tipping Fee
High Income Countries Lower Income Countries 18 Europe, USA, Japan Thailand Problems of MSW in Thailand
ò Collection of waste on the country side is difficult ò Responsibility of waste management on Thesaban level leads to small amounts of waste ò No enforcement of regulations ò Tipping fee very low ò Landfills are almost full ò Resistance of the informal sector
19 Dr. Jochen Amrehn, Bangkok 25.6.2013 Integrated Waste Management
20 Adder tariff Dr. Jochen Amrehn, Bangkok 25.6.2013 Problems for Automatic Sorting
ò High water and organic matter content ò Bag-in-the-bag concept
Europe Waste Bin
Thailand
ò Small amounts of waste ò Road transport ò Low Tipping Fee ò Social Factors 21 Dr. Jochen Amrehn, Bangkok 25.6.2013 Municipal Waste Management Center
22 Dr. Jochen Amrehn, Bangkok 25.6.2013 Criteria for Successful Technology
ò Can treat unsorted MSW ò Can cope with high moisture content of MSW ò Can utilize all components to generate electricity: – Biogas and RDF ò Can treat wide range of MSW compositions ò Environmentally friendly ò Economically feasible
23 Dr. Jochen Amrehn, Bangkok 25.6.2013 MYT (Biodamp) Technology
Mechanical pretreatment
Mixed Paper, packaging MSW Metal ~90 separation % BIODAMP ®
Off-gas treatment Biological drying
Mechanical separation 2 days 8 days Electric current Co-generation
Heat Aerobic waste Inerts Solid recovered fuel Anaerobic digestion water treatment 6 days 24 Dr. Jochen Amrehn, Bangkok 25.6.2013 Biodamp Pilotplant Petchaburi
BIODAMP ® Pilot Plant Thailand
Company: WEHRLE Umwelt GmbH
Location: Petchaburi, Thailand
Input: 3 t/d Municipal Solid Waste
Year: 2010 – 2011
25 Dr. Jochen Amrehn, Bangkok 25.6.2013 Waste with high organic contents Water content ~ 50-60 % 26 Dr. Jochen Amrehn, Bangkok 25.6.2013 27 Waste composition of the input matierial Dr. Jochen Amrehn, Bangkok 25.6.2013 Charging of the DAMP ®-mixer 28 Dr. Jochen Amrehn, Bangkok 25.6.2013 Fresh waste in the DAMP ®-mixer 29 Dr. Jochen Amrehn, Bangkok 25.6.2013 Treated waste in the DAMP ®-mixer 30 Dr. Jochen Amrehn, Bangkok 25.6.2013 Dewatered output of the DAMP ®-mixer Water content ~ 35 % 31 Dr. Jochen Amrehn, Bangkok 25.6.2013 Structure of the output material 32 Dr. Jochen Amrehn, Bangkok 25.6.2013 Air-drying (rotting) of the output material
33 Dr. Jochen Amrehn, Bangkok 25.6.2013 Key Figures of the dry output material RDF: • Water content ~2 %
• Calorific value H u = 13,000 - 20,000 kJ/kg 34 • Chlorine content 0.24 – 0.44 % Dr. Jochen Amrehn, Bangkok 25.6.2013 Clustering of Thesaban
Source: Pollution Control Department 2011 35 Dr. Jochen Amrehn, Bangkok 25.6.2013 Clustering (2)
Cluster Size Waste Load Number of MoU [t/day] Clusters Agreements Large Cluster > 500 3 3 Medium Cluster 250 – 500 206 140 M1 100 – 250 26 18 M2 50 – 100 88 65 M3 92 57 Small Cluster < 50 301 207
Cluster Size Recommended Processes L Sorting + Bio-conversion Process + Incineration + Landfill M1 Sorting + Anaerobic Digestion + Gasification/Pyrolysis/Stoker Incineration + Landfill M2 Sorting + Bio-conversion Process + Pyrolysis/ Gasification + Landfill M3 Sorting + Bio-conversion Process + Pyrolysis/ Gasification + Landfill S Sorting + Bio-conversion Process + Landfill 36 Source: Pollution Control Department 2011 Dr. Jochen Amrehn, Bangkok 25.6.2013 Existing Clusters (2011)
37 Dr. Jochen Amrehn, Bangkok 25.6.2013 Conclusion
ò Most cities in Thailand face a “waste crisis” ò New landfills face public resistance ò New waste management and treatment strategies are needed i.e. – waste reduction, waste separation, distribution of authorities etc. ò Treatment technologies must be appropriate for the Thai specific MSW ò Government must provide suitable conditions for advanced MSW treatment 38 Dr. Jochen Amrehn, Bangkok 25.6.2013 Questions and Answers