Carbon and nitrogen removal from tannery wastewater with a membrane bioreactor

2003 ◽  
Vol 48 (1) ◽  
pp. 207-214 ◽  
Author(s):  
A. Goltara ◽  
J. Martinez ◽  
R. Mendez
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Sequencing Batch Reactor ◽  
Biomass Yield ◽  
Batch Reactor ◽  
Biomass Concentration ◽  
Carbon And Nitrogen ◽  
Yield Values ◽  
Removal Efficiencies

A 3.5 L Membrane Sequencing Batch Reactor (MSBR) was used for the treatment of a wastewater coming from the beamhouse section of a tannery. The wastewater, produced after the oxidation of sulphide compounds, contained average COD and ammonium concentrations of 550 and 90 mg/L respectively. The system was operated for a period of 150 days, with no sludge removal during the whole period of operation. The biomass concentration inside the reactor varied considerably, with maximum values close to 10 g/L at the end of operation. Low biomass yield values were achieved probably due to the low feed/microorganisms (F/M) ratio. An important accumulation of organic matter in the reactor was noticed, although the COD effluent was not affected due to the permeation through the membrane. The nature of this organic matter is finally discussed. Removal efficiencies close to 100% in ammonium and 90% in COD were achieved and the TN removal efficiency ranged from 60 to 90%.

Sequencing batch reactor treatment of tannery wastewater for carbon and nitrogen removal

2002 ◽  
Vol 46 (9) ◽  
pp. 219-227 ◽  
Author(s):  
S. Murat ◽  
E. Atesş Genceli ◽  
R. Tasşli ◽  
N. Artan ◽  
D. Orhon
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Tannery Wastewater ◽  
Tannery Effluent ◽  
Industrial District ◽  
Carbon And Nitrogen ◽  
Start Up ◽  
Evaluation Of System Performance

The paper evaluates the organic carbon and nitrogen removal performance of the sequencing batch reactor (SBR), technology for tannery wastewater. For this purpose, a pilot-scale SBR was installed on site to treat the plain-settled tannery effluent. The study involved wastewater characterization, start-up and operation of the reactor for carbon and nitrogen removal and model evaluation of system performance. Its removal efficiency was compared with that of the existing continuous-flow activated sludge system providing full treatment to wastewater from the Istanbul Tannery Organized Industrial District.

Treatment of high loaded swine slurry in an aerobic granular reactor

2011 ◽  
Vol 63 (9) ◽  
pp. 1808-1814 ◽  
Author(s):  
M. Figueroa ◽  
A. Val del Río ◽  
J. L. Campos ◽  
A. Mosquera-Corral ◽  
R. Méndez
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Batch Reactor ◽  
Granular Sludge ◽  
Average Diameter ◽  
Nitrogen Loading ◽  
Aerobic Granular Sludge ◽  
Swine Slurry ◽  
Start Up ◽  
Removal Efficiencies

Aerobic granular sludge grown in a sequential batch reactor was proposed as an alternative to anaerobic processes for organic matter and nitrogen removal from swine slurry. Aerobic granulation was achieved with this wastewater after few days from start-up. On day 140 of operation, the granular properties were: 5 mm of average diameter, SVI of 32 mL (g VSS)−1 and density around 55 g VSS (Lgranule)−1. Organic matter removal efficiencies up to 87% and nitrogen removal efficiencies up to 70% were achieved during the treatment of organic and nitrogen loading rates (OLR and NLR) of 4.4 kg COD m−3 d−1 and of 0.83 kg N m−3 d−1, respectively. However, nitrogen removal processes were negatively affected when applied OLR was 7.0 kg COD m−3 d−1 and NLR was 1.26 kg N m−3 d−1. The operational cycle of the reactor was modified by reducing the volumetric exchange ratio from 50 to 6% in order to be able to treat the raw slurry without dilution.

scholarly journals Carbon and Nitrogen Removal in Sequencing Batch Reactor Treating Piggrery Wastewater-Pilot Scale Experiment.

1999 ◽  
Vol 22 (12) ◽  
pp. 990-996 ◽  
Author(s):  
Ju-Hyun KIM ◽  
Tetsuro SAKAMURA ◽  
Nobuo CHIBA ◽  
Osamu NISHIMURA ◽  
Ryuichi SUDO
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Pilot Scale ◽  
Carbon And Nitrogen ◽  
Scale Experiment

Tannery wastewater treatment: comparison between SBR and MSBR

2003 ◽  
Vol 3 (5-6) ◽  
pp. 275-282 ◽  
Author(s):  
J.M. Martinez ◽  
A. Goltara ◽  
R. Mendez
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Stable Operation ◽  
Filamentous Bacteria ◽  
Removal Rates ◽  
Loading Rates ◽  
Treatment Comparison ◽  
Removal Efficiencies

The beamhouse sections of tanneries produce around 45% of the total wastewater of factories. A beamhouse wastewater, collected after the oxidation of sulphide compounds and diluted to average COD and ammonium concentrations around 550 and 90 mg/L respectively, was treated separately in two reactors: a sequencing batch reactor (SBR) and a membrane sequencing batch reactor (MSBR). Both systems were operated for 150 days with similar conditions without sludge purge, operating at low feed to microorganisms (F/M) ratios and applying organic and ammonium loading rates up to 0.75 gCOD/L·d and 0.12 gNH4+/L·d respectively. The SBR achieved low ammonium and nitrogen removal rates and COD removal values close to 90%, which decreased dramatically during the last 30 days of operation. An important washout of microorganisms in the SBR was noticed due to the proliferation of filamentous bacteria. However, removal efficiencies close to 100% in ammonium and 90% in COD were achieved in the MSBR, and very stable operation was maintained.

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