title: Treatment of slaughter house wastewater in a sequencing batch reactor: performance evaluation and biodegradation kinetics.
abstract: Slaughterhouse wastewater contains diluted blood, protein, fat, and suspended solids, as a result the organic and nutrient concentration in this wastewater is vary high and the residues are partially solubilized, leading to a highly contaminating effect in riverbeds and other water bodies if the same is let off untreated. The performance of a laboratory-scale Sequencing Batch Reactor (SBR) has been investigated in aerobic-anoxic sequential mode for simultaneous removal of organic carbon and nitrogen from slaughterhouse wastewater. The reactor was operated under three different variations of aerobic-anoxic sequence, namely, (4+4), (5+3), and (3+5) hr. of total react period with two different sets of influent soluble COD (SCOD) and ammonia nitrogen (NH4(+)-N) level 1000 ± 50 mg/L, and 90 ± 10 mg/L, 1000 ± 50 mg/L and 180 ± 10 mg/L, respectively. It was observed that from 86 to 95% of SCOD removal is accomplished at the end of 8.0 hr of total react period. In case of (4+4) aerobic-anoxic operating cycle, a reasonable degree of nitrification 90.12 and 74.75% corresponding to initial NH4(+)-N value of 96.58 and 176.85 mg/L, respectively, were achieved. The biokinetic coefficients (k, K(s), Y, k(d)) were also determined for performance evaluation of SBR for scaling full-scale reactor in future operation.
authors.affiliation: Environmental Engineering Division, Civil Engineering Department, Jadavpur University, Kolkata 32, India.
authors.forename: Pradyut
authors.initials: P
authors.lastname: Kundu
authors.forename: Anupam
authors.initials: A
authors.lastname: Debsarkar
authors.forename: Somnath
authors.initials: S
authors.lastname: Mukherjee
mesh_terms: D000003:Abattoirs; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002244:Carbon / Q000737:chemistry; D006801:Humans; D007700:Kinetics; D009584:Nitrogen / Q000737:chemistry; D062065:Wastewater / Q000737:chemistry*
chemical_list: D002244:Carbon; D009584:Nitrogen; D062065:Wastewater
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