Clean Development Mechanism: An UpdateIGES-ICS workshop

Bangalore, 26-27 July 2005

CDM : Poultry litter based power generation

Project brief“Recovery of methane from poultry litter by

high rate biomethanation process and grid connected power generation”

PurposeTo collect, process and recover methane generated by poultry litter To generate electricity from methane and sell to state owned utility To produce organic manure from the biogas digester residue.To demonstrate environment friendly technology to avoid emissions and to enhance propagation of commercialization of such technologyTo contribute to the positive sustainable development of the region: socially, environmentally and economically

Project brief

Promoters : G. K. Bioenergy Pvt. Ltd. Capacity : 1.5 MW / 40 t of manure/dayLocation : Namakkal, Tamil NaduQuantum of litter collected : 200 tons/day

( from 12 farms housing 1.5 Mn birds)

Technology: High rate biomethanation(imported technology – indigenized)

Commissioned : Jan-Feb 2005

Current practice

Open dumping, removed every six monthsmethane is generated due to uncontrolled anaerobic digestion besides nitrous oxide. Unhygienic conditions for egg laying birdsSold as manure to Keralaafter six months

Proposed intervention

Collection of poultry litter every 3-4 dayswell-constructed and properly maintained sheds with a sloping floor for easy collection of litter in bins Adequate space or gap is provided between the sloping floor and the poultry shelter for facilitating litter collection. Anaerobic digestion of collected litter for methane generationPower generation from methaneManure production from the treated litter

Proposed intervention

Poultry WasteFeed

preparation Digester

Biogasstorage

Biogas desulphuration

Power generation

Electricity to grid

Dewatering of sludge by screw presses

Residue storage

tank

Aerobic composting Compost

Dewatering of sludge by screw presses

Residue storage

tank

Aerobic composting Compost

CDM and the project

Project qualifies under small scale CDM (Type III D : Methane Recovery and Type I D : Power supply to grid)Avoids Methane, Carbon-di-oxide and Nitrous oxide emissionsNitrous oxide emission reductions and CO2 reductions (for replacing chemical fertilizer) to be ascertained at later stage

Litter production in poultry farms

Open dumping for six months

Land application as manure

Gas released into atmosphere

CH4

Emissions due to transportation of

semi digested litter (manure)

NOx and CO2

CO2

CDM and the project

EmissionsTransportationCombustionManure handling

Poultry no. 1

Poultry no. 2

Poultry no. …

Poultry no. 12

Litter collection BiomethanationPlant

Manure usage in fields

ElectricityGenerator TNEB grid

Biogas composed ofmethane andcarbon dioxide

Manure

Project boundary

Fuel(Diesel/Petrol)

transportation

Emission reductions

Methane recovery part6,000/ annum

Power recovery part10,000 / annum

Methodology for other ER being explored by the promoter

Additionality arguments

Investment barrierProject cost : 4.6 Mn USD

Not a common practiceContinue to open dump

Project : First of its kindHRBM for poultry litter

Stakeholder consultation

Study through GRDIM, Coimbatore

Poultry farm ownersPrice for litter less attractive (Rs 550 Vs 700 / Ton)

Government officialsImprove hygienic conditions for birdsRid of bad odours and vector breedingEnhance egg laying capacityImproved power availability

Thank you