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Treatment of petrochemical wastewater by rotating biological contactor.
Environ Technol. 2005 Dec; 26(12):1317-26.ET

Abstract

A laboratory scale study has been conducted to assess the efficiency of rotating biological contactor (RBC) to treat the synthetic wastewater from a petrochemical industry producing acrylonitrile. The attached biomass was acclimatised by gradually increasing cyanide concentration from 5 to 40 mg l(-1) with simultaneous increase in the concentration of chemical oxygen demand (COD) and ammonium nitrogen (NH4+-N). During acclimatization COD removal varied between 80-88 percent (%) while cyanide removal was more than 99%. The RBC was operated at varying hydraulic loading rates from 0.011 to 0.027 m3 m(-2) d(-1). The performance of the RBC was monitored for various parameters like COD, 5-day biochemical oxygen demand at 20-degree centigrade (degrees C) [BOD5], cyanide, ammonium nitrogen etc., for all hydraulic loadings. At all hydraulic loadings the cyanide removal remained more than 99%. The removals obtained in terms of percentage, for cyanide, COD, BOD5 and NH4+-N were greater than (>) 99, 95.2, 99.1 and 77, respectively at hydraulic loading of 0.011 m3 m(-2) d(-1). The effect of substrate/cyanide ratio on the performance of the process at five different ratios, 100/1, 80/1, 60/1, 40/1 and 20/1, showed more than 99% cyanide removal at ratio 20/1. The effect of COD/nitrogen (N) ratio was studied at four different ratios, 12/1, 10/1, 8/1 and 6/1, showed cyanide removal remained unaffected. The variation of biomass concentration within the system was also studied.

Authors+Show Affiliations

Centre for Environmental Science & Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, India.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16372566

Citation

Kubsad, V, et al. "Treatment of Petrochemical Wastewater By Rotating Biological Contactor." Environmental Technology, vol. 26, no. 12, 2005, pp. 1317-26.
Kubsad V, Gupta SK, Chaudhari S. Treatment of petrochemical wastewater by rotating biological contactor. Environ Technol. 2005;26(12):1317-26.
Kubsad, V., Gupta, S. K., & Chaudhari, S. (2005). Treatment of petrochemical wastewater by rotating biological contactor. Environmental Technology, 26(12), 1317-26.
Kubsad V, Gupta SK, Chaudhari S. Treatment of Petrochemical Wastewater By Rotating Biological Contactor. Environ Technol. 2005;26(12):1317-26. PubMed PMID: 16372566.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Treatment of petrochemical wastewater by rotating biological contactor. AU - Kubsad,V, AU - Gupta,S K, AU - Chaudhari,S, PY - 2005/12/24/pubmed PY - 2006/3/3/medline PY - 2005/12/24/entrez SP - 1317 EP - 26 JF - Environmental technology JO - Environ Technol VL - 26 IS - 12 N2 - A laboratory scale study has been conducted to assess the efficiency of rotating biological contactor (RBC) to treat the synthetic wastewater from a petrochemical industry producing acrylonitrile. The attached biomass was acclimatised by gradually increasing cyanide concentration from 5 to 40 mg l(-1) with simultaneous increase in the concentration of chemical oxygen demand (COD) and ammonium nitrogen (NH4+-N). During acclimatization COD removal varied between 80-88 percent (%) while cyanide removal was more than 99%. The RBC was operated at varying hydraulic loading rates from 0.011 to 0.027 m3 m(-2) d(-1). The performance of the RBC was monitored for various parameters like COD, 5-day biochemical oxygen demand at 20-degree centigrade (degrees C) [BOD5], cyanide, ammonium nitrogen etc., for all hydraulic loadings. At all hydraulic loadings the cyanide removal remained more than 99%. The removals obtained in terms of percentage, for cyanide, COD, BOD5 and NH4+-N were greater than (>) 99, 95.2, 99.1 and 77, respectively at hydraulic loading of 0.011 m3 m(-2) d(-1). The effect of substrate/cyanide ratio on the performance of the process at five different ratios, 100/1, 80/1, 60/1, 40/1 and 20/1, showed more than 99% cyanide removal at ratio 20/1. The effect of COD/nitrogen (N) ratio was studied at four different ratios, 12/1, 10/1, 8/1 and 6/1, showed cyanide removal remained unaffected. The variation of biomass concentration within the system was also studied. SN - 0959-3330 UR - https://www.unboundmedicine.com/medline/citation/16372566/Treatment_of_petrochemical_wastewater_by_rotating_biological_contactor_ L2 - https://www.tandfonline.com/doi/full/10.1080/09593332608618614 DB - PRIME DP - Unbound Medicine ER -