Ershad Ullah Khan, MSc

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• Ershad Ullah Khan, MSc
• Process 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 power
• Safe 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 production
• Well proven technology for small scale CHP
• Biogas can be used directly in the gas engine
• Heat of exhaust gas is used for ground water
  heating
• Commercially available
• Technically 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 virus
• Fertilizers and pesticides
• Industrial chemicals
• Arsenic

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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 modules
• Electric 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 water

• Specific cost for kWh electricity 0.04 (28
  öre)
• Specific cost for per liter water 0.015 (11
  öre)

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Organizational chart
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Costs of proposed pilot project

• Installation costs 80700
• Operation and maintenance 04 years project 8070

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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 years
• Total budget, 780,200

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Sensitivity analysis
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Sensitivity analysis
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Thank you for your attention