1 Biogas Plant on Phu Quoc - a feasible option
Current Energy Situation Phu Quoc (1) 2 nergy Supply Grid Diesel based ca. 16.000 MWh/a (2003), approx. 15% increase per year Ca. 21.160 MWh/a (2005) Old diesel generator End of grid, (North Phu Quoc)
Current Energy Situation Phu Quoc (2) 3 ew diesel based ower plant
Current Energy Situation Phu Quoc (3) 4 Rural area: - not connected to the grid - small diesel generators - Example : locations Xa Bai Thom and Ganh Dau (7 villages) Demand: ca. 1.440 MWh/a (Ca. 2000 households, monthly energy demand per h: 40-80 kwh)
Current Energy Situation Phu Quoc (4) Price Grid: 1.700 VND/kWh expexted increase of electricity costs (due to increase of fuel prices and resulting electricity generation costs of ca. 2000 VND/kWh) diesel cost: 2100 VND = 700 VND/kWh elk. 5 Rural (not connected to grid, small diesel generators): 5.000 20.000 VND/kWh
Suitable substrates for Biogas from Phu Quoc (1) Household waste (organic fraction) 6 rigin: two major cities: (Duong Dong and An Thoi) uantity: 0,53 kg waste/ day/person 80.000 Inhabitants Duong Dong/ An Thoi (Prognosis for next years) Ca. 15,5 million kg waste
ousehold Waste characteristics ca. 50 % Dry Substance (DS) ca. 80% organic Dry Substance (ods) Suitable substrates for Biogas from Phu Quoc (1) 7 iogas yield from household waste ca. 0,35 m³ biogas /kg waste ods 0,14 m³ biogas /kg wet waste (OS)
Energy production from household waste from Phu Quoc 8 Total energy content of 15,5 million kg household waste from Phu Quoc Ca. 13.000 MWh/a (= ca. 1,3 mio liter Diesel) Netto surplus electricity production Ca. 4.100 MWh/a (considering generator efficiency of 35%, auxiliary energy consumtion 10%) = 470 kwh
Possible Sites for a biogas plant (1) 9 site near planned landfill, Xa Bai Thom (North Phu Quoc)
Possible Sites for a biogas plant (2) Site near new Power Plant (near Duong Dong) 10
Possible Process Technology 11 Liquid fermentation process?
12 Biogas plant, Radeberg Co-fermentation of clarification sludge and biowaste Source: Bio-Verwertungsgesellschaft Radeberg mbh
Dry fermentation in concrete container 13
Dry fermentation in concrete container 14
Possible Process Technology 15 Dry fermentation process Gas processing Block heat and power plant CO 2 Electricity Heat iowaste Bunker Fermenter Condensate Composting Compost screening and refining Sec. raw material fertiliser (agriculture) Interferring substances Leachte
BEKON plant, Pilot plant 16
BEKON plant, Pilot plant 17
BEKON plant, Pilot plant 18
80 70 60 50 40 30 20 BEKON plant, Pilot plant Methan [% CH4] Temperatur [ C] H2S [ppm] 120 110 100 90 80 70 60 50 40 30 19 13.07.2004 15.07.2004 17.07.2004 19.07.2004 21.07.2004 23.07.2004 25.07.2004 27.07.2004 29.07.2004 31.07.2004 02.08.2004 04.08.2004 06.08.2004 08.08.2004 10.08.2004 12.08.2004 14.08.2004 16.08.2004 18.08.2004 20.08.2004 22.08.2004 24.08.2004 26.08.2004 28.08.2004 30.08.2004 Datum % CH4 bzw. C ppm
Biogas production 20 30 25 Gasproduktion [Nm³/h] 20 15 10 5 0 0 10 20 30 40 50 60 Source: Bekon Energy Technology GmbH & Co KG Zeit [d]
Biogas production 21 Source: Bekon Energy Technology GmbH & Co KG
BEKON plant, Pilot plant 22
Economic feasibility 23 diesel cost: 2100 VND = 700 VND/kWh elk...
Benefits of Biogas in Phu Quoc 24 Cost effective, decentralised energy production Reduction of energy price Reliable electrification of villages Independent from import fuels Environmental benefits Reduction of ground water pollution and smell, by pre-treatment of waste prior landfilling CO 2 -Reduction by utilising organic content of waste (CO2-neutral) Reduction of air and noise pollution (from generators) Clean Island Economic benefit Attractiveness for tourists Infrastructure Jobs
Funding available 25 News: Funding granted for subsequent project RENEW - Feasbility study for Biogas and Biomass Combution for Phu Quoc, Vietnam EC-ASEAN Energy Facility-Programme 50 % funding Start: ca. January 2005 ca. December 2006
Next steps 26 Goal: Implementation of a biogas plant Looking for finance and funding from EC or others Looking for Vietnamese co-financing