PERFORMANCE STUDY OF HIGH RATE BIOMETHANATION FOR TREATMENT OF INDUSTRIAL SAGO WASTE WATER

V. PALANISELVAM¹*, A. KAMARAJ², D. RAMESH³, S. SRIRAMAJAYAM^4
1Agricultural College and Research Institute, Madurai, 625 104, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
²Agricultural College and Research Institute, Thanjavur, 614 902, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
³Horticultural College and Research Institute for Women, Tiruchirappalli, 620009, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
⁴Department of Bioenergy, Agricultural Engineering College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
* Corresponding Author : vpselvam2002@gmail.com

Received : 30-11-2019     Accepted : 27-12-2019     Published : 30-12-2019
Volume : 11     Issue : 24       Pages : 9332 - 9335
Int J Agr Sci 11.24 (2019):9332-9335

Keywords : Hybrid reactor, Biogas, Anaerobic digestion, Biomethanation, Sago wastewater treatment
Academic Editor : Dr Latifah Omar, Monpara B A
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to DST, SERB, New Delhi for the Financial grant to do the project and Sri Senniamman Sago Factory, Athur for the supply of Sago industrial waste water used in the studies. Authors are also thankful to Agricultural College and Research Institute, Madurai, 625 104, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
Author Contribution : All authors equally contributed

In India, energy continues to be precious with continues hiking of oil prices unlike in the west, anaerobic digestion has far greater relevance then it has to many other regions of the world. The cassava starch production in India is mainly concentrated in small to medium scale factories, which generates 30,000 to 40,000 litres of effluent per tonne of sago produced. The effluent from these industries is acidic and highly organic in nature having COD of 5000 to 7000 mg/l during the season and 1000 to 5000 during the off-season. These effluents pose a serious threat to the environment and quality of life in the both rural and cities. Since the treatment of sago factory effluent through the normal biogas plant with 30 to 55 days retention period is very costly, attempts have been made to treat them through high rate biomethanation reactor with several hours of retention period. In the batch digestion of 4-5 week period there was no gas production at all from the sago waste water, when it was not neutralized and not added with inoculum without any addition of media. The maximum gas production of 34.5 Litres at 4.35m3/Kg TS reduced with biogas production of 1.01/l of feed in the digestion with the weekly addition of 25,10 and 5 percent of inoculum respectively over the first three weeks without any addition of media. The performance of hybrid biomethanation reactor with the packing media of PVC pall rings was designed and performance was studied under different retention period. The specific gas production was 723l/Kg TS and 909l/Kg VS in PVC pall rings media reactor.

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