Specific nutrient removal rates in saline wastewater treatment using sequencing batch reactor

2006 ◽  
Vol 41 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Ahmet Uygur
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Saline Wastewater ◽  
Removal Rates

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.

Simulation and applications of a novel modified SBR system for biological nutrient removal

2001 ◽  
Vol 43 (3) ◽  
pp. 215-222 ◽  
Author(s):  
W. Wu ◽  
P. Timpany ◽  
B. Dawson
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Sequencing Batch Reactor ◽  
High Efficiency ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Biological Nutrient Removal ◽  
Waste Activated Sludge ◽  
Practical Applications ◽  
Annual Basis

Dynamic simulation and applications of a novel, continuous-fed, constant level modified sequencing batch reactor for biological nutrient removal are presented. The underlying mathematical model and practical applications of the simulation are discussed. Case studies are presented to illustrate the applications as well as the flexibility of the system in meeting different wastewater treatment requirements. Operation experience from full-scale wastewater treatment plant demonstrates the reliability, ease of operation and high efficiency of the system. Average BOD5, total nitrogen, total phosphorus and TSS removals of 97, 81, 88 and 94% are achieved respectively on an annual basis with little operator attention. Consistently high waste activated sludge concentrations are demonstrated, averaging approximately 20,000 mg/L.

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