the first high-level biofuels seminar in africa 30 july – 1 august 2007, addis ababa, ethiopia by...
TRANSCRIPT
THE FIRST HIGH-LEVEL BIOFUELS SEMINAR IN AFRICA
30 JULY – 1 AUGUST 2007, ADDIS ABABA, ETHIOPIA
by
AFRICAN UNION UNIDO
JOHN AFARI-IDAN,An International Expert - Biogas Technology in
AfricaTeam Leader, ARSCP Biofuel Task
Team For Africa
A joint activity of the African Union Commission, Brazilian Government and UNIDO.
Presentation on Industrial Application of Biogas Technology in Africa
Feed Stocks
Industrial solid and liquid Wastes
Agricultural residues and manure
Municipal Solid Waste
Domestic and Commercial Liquid waste
Health Care Waste
Human wastes (normally considered as part of domestic waste generation in industry)
Sources of Feed Stocks (1)
Restaurants and HotelsTourist AreasStadiaEducational InstitutionsPolice, Military and Prisons BarracksMunicipal Sewage
Sources of Feed Stocks (2)
Meat and Agro-processing IndustriesAbattoirsFish and Animal HusbandryReal Estates
Conversion Technologies
Broad Classification of Digester Types Covered Lagoons Balloon Plants Fixed-Dome Plants Floating Drums
Design Characteristics Continues Feed Batch Feed
Digester Characteristics
The African Experience
Kenya Lesotho South Africa Namibia Sudan Nigeria Burundi
Rwanda Botswana Uganda Ghana Guinea
Integrated Approach - BTWAL the Ghanaian
ExperienceSegregates hi-BOD process effluent at source
Segregates degradable fractions of municipal solid wastes and
solid process wastes at source
Integrates all bio-wastes and sewage in the anaerobic digesters to
maximize biogas production(Sewage providing the best substrate
for the indigestion process)
Recycles treated wastewater for less critical application, water
conservation, liquid fertilizer production for periurban organic
framing
The BTWAL Technology Components
The Bio-digester (s)The Expansion ChambersFiltration BedsUV Water Treatment System Treated Effluent storageBiogas Recovery BalloonBiogas end-use accessories
A large scale application for an under-construction university in Ghana (15,000
student population)
Sections of the University Building under Construction
Completed biogas plant -Health-care Industry
Completed biogas plantFood Processing Industry
THE BIOGAS PLANT AT THE NESTLE FACTORY, TEMA - GHANA
Biogas Use – Cooking at the Valley View University, Accra
BIOGAS ELECTRICITY GENERATOR at the Abattoir in Ferkessedougou, Ivory Coast
15KW BIOGAS GENERATOR POWER UNIT
REFRIDGERATION
Biogas Technology Opportunities
Problems of current waste handing practicesIncreasing need of alternative energy sources
to address energy securityPotential for methane emissions reduction
and climate mitigation technologiesSustainable use of nutrients and energy
resources in waste materials
Potential Industrial Application of the BTWAL Approach
AbattoirFood industryHealth-care IndustryHousing IndustryHospitality IndustrySewage Treatment Plant
The Abattoir
Hospital Industry
Housing Industry
Hospitality industry
Substitution of Waste Water Treatment
Substitution of raw Sewage disposal into wetlands and large marine (e.g. the sea)
ecosystem
Substitution of Industrial Waste Treatment
Substitution of Septic Tanks in Real Estate Development
Substitution of Extended Aeration Plant
Municipal Solid Waste65% of which is Biodegradable
Broken-Down Aerators (STP)
Cesspool Emptying
SUSTAINABILITY INDICATORS
Meets the 3R Principles
Reduction of water use at source
Recovery of degradable organic fractions of solid waste
Recovery of residual energy in bio-waste for biogas
generation
Recycle of 60% total water component of digester feed
Re-use the energy resources
DIRECT ECONOMIC BENEFITS
Avoid Cost of Constructing Septic Tank for new projects
Reduce cost of transportation to landfills Reduce portable water use at source from
cistern modification Recycle and Reuse treated wastewater
for: WCs re-flushing Irrigation and land scaping
Equivalent LPG of Biogas for cooking and refrigeration of essential drugs
Environment, Health and Sanitation Benefits
Avoidance of odour nuisance from Septic Emptying and off-site transportation
Elimination of seasonal overflows of septic tanks
Avoidance of off-site dumping of Hi-BOD load sewage in ecosystems
Recovery of residual energy resource in sewage for energy security
Water conservation for water security Contribute to meeting MDG goals for
poverty reduction
Barriers to Industrial Applications
TechnicalHuman ResourceFinancialCommunication
PLAN OF ACTION FOR PENETRATION OF BIOGAS TECHNOLOGIES APPLICATION
Communication and Awareness creation
Institutional Framework and capacity building
Technical Capacity Building
• Design and construction
•Large Scale pre-Casting of modular digesters
Knowledge Networking and Transfer
Financial Resource Mobilization
Patenting and Intellectual Property Right
Demonstration Projects for integrated waste treatment with Biogas
Power
generation
THANK YOU
MERCI