caa a22 4500 606169741 CHVBK 20210128100713.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10098-014-0829-1 doi (NATIONALLICENCE)springer-10.1007/s10098-014-0829-1 Nitrification and denitrification characteristics in a sequencing batch reactor treating tannery wastewater [Elektronische Daten] [Rangaraj Ganesh, Philippe Sousbie, Michel Torrijos, Nicolas Bernet, Ramamoorty Ramanujam] Long-term evaluation of a SBR fed with tannery wastewater (SBRtww) was carried out to study the periods of satisfactory and unsatisfactory performance in the nitrification and denitrification properties. Another SBR fed with synthetic nitrogen medium simulating tannery wastewater (SBRsww) was used to assess separately the end points of nitritation and nitratation by online monitoring of pH and DO. Flex point in the DO and pH profiles of the SBRsww cycle corresponding to the end point of nitritation was well observed, whereas the end point of nitratation was vaguely detected. The end point of nitritation suggested that the aeration phase can be reduced considerably and denitrification via nitrite can be facilitated to minimize oxygen requirements and reduce operational costs. During the long-term operation of SBRtww, stable and unstable phases of nitrification were observed. A maximum nitrification rate of 14.1mg/Lh was obtained during the stable phase of the reactor. Inhibiting substances in tannery wastewater was found to be the possible reason for the instability in nitrification. Denitrification property, however, was not much affected as that of nitrification. The maximum denitrification rate observed was 10.7mg/Lh. Nitrogen removal in an aerobic SBR through simultaneous nitrification--denitrification could be a good option for tannery wastewater. SBR is a viable option for tannery wastewater compared to the conventional aerobic systems provided pollution control measures are conducted at the source level through the use of eco-friendly chemicals and cleaner processing methods to avoid nitrification inhibiting compounds in the effluent. Springer-Verlag Berlin Heidelberg, 2014 SBR nationallicence Nitrification nationallicence Tannery wastewater nationallicence DO control nationallicence pH control nationallicence Inhibition nationallicence Ganesh Rangaraj Department of Environmental Technology, Council of Scientific and Industrial Research - Central Leather Research Institute, 600020, Chennai, India aut Sousbie Philippe UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut Torrijos Michel UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut Bernet Nicolas UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut Ramanujam Ramamoorty Department of Environmental Technology, Council of Scientific and Industrial Research - Central Leather Research Institute, 600020, Chennai, India aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/3(2015-03-01), 735-745 1618-954X 17:3<735 2015 17 10098 https://doi.org/10.1007/s10098-014-0829-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-014-0829-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ganesh Rangaraj Department of Environmental Technology, Council of Scientific and Industrial Research - Central Leather Research Institute, 600020, Chennai, India aut NATIONALLICENCE 700 1- Sousbie Philippe UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut NATIONALLICENCE 700 1- Torrijos Michel UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut NATIONALLICENCE 700 1- Bernet Nicolas UR0050, Laboratoire de Biotechnologie de l'Environnement, INRA, Avenue des Etangs, 11100, Narbonne, France aut NATIONALLICENCE 700 1- Ramanujam Ramamoorty Department of Environmental Technology, Council of Scientific and Industrial Research - Central Leather Research Institute, 600020, Chennai, India aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/3(2015-03-01), 735-745 1618-954X 17:3<735 2015 17 10098