1 ershad ullah khan, msc process engineer tps termiska processer ab
TRANSCRIPT
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Ershad Ullah Khan, MScProcess Engineer
TPS Termiska Processer AB
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Arsenic poisoning
Bangladesh is experiencing the largest mass poisoning in human history, because of arsenic in the ground water. Around 80 million Bangladeshis may be affected (WHO)
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Lack of electricity and safe water
80% of the population live in rural areas.Around 70% of them are not connected to the
national grid electricity.
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Decentralised energy
Decentralised systems for the supply of electricity are the most appropriate solutions for rural dwellers.
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The project
This project is a pilot investment in Bangladesh
Livestock and vegetable waste biogas CHP plant integrated with membrane distillation.
The purpose is to make both electricity and clean water from the same bio energy.
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Biogas driven engine and membrane distillation process
Distributed powerSafe drinking water and Fertilizer all from one input which is manure or
vegetable waste.
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Pilot project description
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Biogas engine from JDEC
Small scale electricity productionWell proven technology for small scale CHPBiogas can be used directly in the gas engineHeat of exhaust gas is used for ground water
heatingCommercially availableTechnically and economically feasible
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Membrane distillation technology (MD)
Conventional Membrane distillation
Conventional small-scale technologies could not remove the arsenic sufficiently
Conventional large plants are not feasible for small and rural areas
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Absolutely pure water
Bacteria and virusFertilizers and pesticidesIndustrial chemicalsArsenic
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Representative test results
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Membrane module system
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Proposed pilot project
26 kWe biogas engine 3 membrane distillation modulesElectric efficiency 31% Thermal efficiency 40%Annual electricity generation 197 MWh (540
kWh/d)Annual water production 456,000 litres (1250
l/d) Equipment life 10-20 yrs
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Costs per capita electricity and waterSpecific cost for kWh electricity $ 0.04 (28
öre)Specific cost for per liter water $ 0.015
(11 öre)Total investment cost for digester 6,700.00 (USD)
Operating and maintenance costs for 10 years 6,700.00
Total investment cost for gas engine 32,500.00
Operating and maintenance for 10 years 32,500.00
Total cost for electricity production 78,400.00
Specific cost for per kWh electricity 0.04 $/kWh
Total investment cost for MD facilities 41,500.00
Operating and maintenance for 20 years 93,000.00
Total cost for water production 1,34,500.00
Specific cost for water production 0.015 $/lit
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Organizational chart
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Costs of proposed pilot project
Installation costs $ 80700Operation and maintenance 04 years project
$ 8070Investment costs for different units
MD unit,52% Engine; 40%
Digester; 8%
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Economic viability
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Total budget
Equipment and installation costs (demo plant), $ 84,000
Demo plant operation and maintenance costs, $ 8,070/year for 4 years
Salary (Project leader + Advisor) $ 162,000/year for 4 years
Travel per year $ 4,000 for 4 yearsTotal budget, $ 780,200
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Sensitivity analysisGas engine cost Vs Total Invt.
0
40000
80000
120000
160000
200000
240000
280000
0 15000 30000 45000 60000 75000 90000 105000 120000 135000 150000 165000 180000 195000
Engine cost
Inve
stm
ent
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Sensitivity analysisInvestment Vs module cost
69000
71000
73000
75000
77000
79000
81000
8000 10000 12000 14000 16000 18000 20000
Modules cost
Investm
ent
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Thank you for your attention