Identification of Dominant Role of Bacillus sp. in Potential Aerobic Biological Treatment of Bulk Drug Industrial Effluent
Mriganka Sekhar Mukhopadhyay1, Vijay K. Dwivedi2, Sudit S. Mukhopadhyay3, Soumya Bhattacharyya4
1Mriganka Sekhar Mukhopadhyay, Department of Civil Engineering, National Institute of Technology, Durgapur (West Bengal), India.
2Vijay K. Dwivedi, Department of Civil Engineering, National Institute of Technology, Durgapur (West Bengal), India.
3Sudit S. Mukhopadhyay, Department of Biotechnology, National Institute of Technology, Durgapur (West Bengal), India.
4Soumya Bhattacharyya, Department of Civil Engineering, National Institute of Technology, Durgapur (West Bengal), India.
Manuscript received on 02 June 2019 | Revised Manuscript received on 27 June 2019 | Manuscript Published on 04 July 2019 | PP: 23-29 | Volume-8 Issue-1S4 June 2019 | Retrieval Number: A10060681S419/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A year-long study has been carried out on aerobic biological treatment of bulk drug industrial effluent which is highly acidic in nature and shows high value of BOD5 (≈ 36000 mg/l), COD (≈ 84000 mg/l), and volatile solids (≈ 1, 70,000 mg/l). Chemical treatment conducted for neutralizing the pH followed by biological treatment using a lab-scale reactor with acclimatized bacterial consortia isolated from natural soil has confirmed its biological treatability. About 99% removal of COD from starting value of around 8000 mg/l has been achieved. The COD value in different hydraulic retention time (HRT) has been brought down to less than 100 mg/l in treated effluent, showing high removal of dissolved organics by aerobic biological treatment. The biochemical and genetic analysis has confirmed the Bacillus sp. playing an omnipotent role in treating the chemically treated and diluted bulk drug industrial effluent and in bringing down the COD value to a level which conform the effluent standard for discharge to surface water.
Keywords: Keywords: Bulk Drug Effluent, Aerobic Biological Treatment, COD, Bio-Kinetic Constants, Bacillus Sp.
Scope of the Article: Residential, Commercial, Industrial and Public Works