Energy generation from slaughterhouse waste

HYDERABAD, DEC. 27. A 60 tonne per day capacity Bio-Methanation plant for energy generation from slaughterhouse waste was inaugurated on the premises of the Al-Kabeer Exports Private Limited in Rudraram village, Medak district, on Thursday by Mr. P.M. Nair, Secretary, Union Ministry of Non-Conventional Energy Sources (MNES).

Sponsored jointly by the UNDP's Global Environmental Facility (UNDP/GEF) and MNES, the project had been implemented by the Chennai based Central Leather Research Institute (CLRI) in technological collaboration with Entec, Austria.

The project envisages a comprehensive utilisation of animal waste generated at the slaughter house to both halt disposal of polluting waste and convert the waste into energy to be used for operations of the slaughter house.

The Union Minister of State for Non-Conventional Energy Sources, Mr. M. Kannappan, whose address was read out in his absence, said that the energy recovery potential from urban waste was about 1000 MW and from industrial waste 700 MW. To tap this potential, his Ministry was implementing a `National Programme on Energy Recovery from Urban and Industrial Wastes'.

Dr. P. Venkataramana, South Asia Representative, UNDP/GEF, said that the special feature of the project was that it was a `closed cycle' projected and said that it would act as a technology demonstrator which could be replicated in abbatoirs all over the country.

Dr. T. Ramasami, Director, CLRI, pointed out that organic wastes were easily amenable to produce energy, but if they were disposed untreated they pollute soil, water and air adding to global warming. In fact, it had been a contention of many developed countries that developing countries like India contribute to global warming through their animal populations. Energy produced from such waste would help reduce our burden on fossil fuels while addressing these global concerns, he said.

The Al-Kabeer slaughter house, with a capacity to process 1500 sheep and 500 to 800 buffaloes per day, generates 1400 cubic metres of liquid waste and 60 tones of solid waste per day.

The liquid waste treatment plant already produces 1800 cubic metres of biogas and 500 kg of bio-sludge every day and the treated effluent could be used for soil enrichment and aquaculture.

The new solid waste Bio-Methanation plant was expected to treat dung, semi-digested dung, fat and grease and generate 2600 cubic metres of biogas. Built at a total cost of Rs. 3.85 crores, the next phase of the project envisages the installation of a gas engine to generate 500 KW/h of electricity plus 10 tonnes of organic fertilizer.