Home > Research Paper Tags > Denitrification
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However it achieves only a transfer of pollution by producing concentrated brines. This study demonstrated the feasibility of ED brine denitrification in a membrane bioreactor (MBR). The results showed the high efficiency of the MBR despite the drastic conditions of nitrate concentration, pH
Desalination 149 (2002)
... rate was 40 L d−1. The treatment system was able to remove 70% of the total nitrogen and 78% nitrate when sugar is used as carbon source for denitrification at a C:N ratio of 4:1. The SMBR produced an effluent with turbidity less than 0.5 NTU consistently for more than 200 days. An air flow rate o ...
Desalination 221 (2008)
... the system. When DO concentration was 2 mg/L and mixed liquor suspended solids, MLSS, concentration was 16 g/L, simultaneous nitrification and denitrification was observed in the system. The effluent turbidity, was always below 1 NTU, equal to or below that of tap water, and around 6–7 log colifor ...
Desalination 215 (2007)
... high molecular weight compounds would be the first positive role of membrane biofilm in MBR process as discussed in previous researches. 3.3. Denitrification by the membrane biofilm During the experiments, we found that the concentration of nitrate was significantly different between supernatant an ...
Desalination 202 (2006)
Effects of hydraulic loading and room temperature on performance of anaerobic/anoxic/aerobic system for ammonia-ridden and phenol-rich coking effluents
... at A2/O stages, whereas the effect of temperature on ammonium removal at A1 stage was relatively weak. Keywords: A1/A2/O process; Ammonia; Denitrification; Phenol; Hydraulic loading; Room temperature 1. Introduction High-strength Coking Effluent (CE) is produced in the integrated steel plants a ...
Desalination 250 (2009)
Comparative pilot study of the performances of two constructed wetland wastewater treatment hybrid systems
... higher than 90% in organic matter removal are registered. For the first system we could obtain a substantial nitrification but uncompleted denitrification whereas for the second system we observed that the total nitrogen (NTK) reduction was achieved by denitrification and nitrification remain ...
Desalination 248 (2009)
... in large quantities are methemoglobinemy and the formation of nitrosamines that are carcinogenic and that reach the stomach or the liver. The denitrification of waters becomes obligatory. Various methods have been tested for the denitrification of waters which are biological denitrification, io ...
Desalination 168 (2004)
Influence of a prolonged solid retention time environment on nitrification/denitrification and sludge production in a submerged membrane bioreactor
... high strength industrial wastewater. Throughout the entire experiment, chemical and biological effects on sludge production and nitrification/denitrification were investigated. The trend of MLSS growth was found to be divided into four phases. An initial growth phase followed by a pseudo stabl ...
Desalination 245 (2009)
The results of an experimental study, developed on a membrane bioreactor/membrane contactor pilot plant, aimed at drinking water denitrification are presented and discussed. In the adopted configuration the water, contaminated by nitrates, flows inside the fibres of a membrane unit. Du ...
Desalination 210 (2007)
Denitrification of drinking water by the association of an electrodialysis process and a membrane bioreactor: feasibility and application
... the recommended value (25 mg/l−1) for drinking water. Moreover, the ED treatment induced a softening of the treated water. The biological denitrification allowed the almost total removal of nitrates (99%) with kinetics close to 0.3 kgN–NO3/kg MVS/d and a limited sludge production of 0.5 gV.S.S
Desalination 139 (2001)