The influence of the selected nonionic surfactants on the activated sludge morphology and kinetics of the organic matter removal in the flow system

2007 ◽  
Vol 41 (1-2) ◽  
pp. 26-34 ◽  
Author(s):  
Ewa Liwarska-Bizukojc ◽  
Marcin Bizukojc
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Nonionic Surfactants ◽  
Flow System ◽  
Organic Matter Removal ◽  
Kinetics Of

Effect of anionic and nonionic surfactants on the kinetics of the aerobic heterotrophic biodegradation of organic matter in industrial wastewater

2008 ◽  
Vol 42 (4-5) ◽  
pp. 923-930 ◽  
Author(s):  
Ewa Liwarska-Bizukojc ◽  
René Scheumann ◽  
Anja Drews ◽  
Ute Bracklow ◽  
Matthias Kraume
Keyword(s):  
Organic Matter ◽  
Industrial Wastewater ◽  
Nonionic Surfactants ◽  
Kinetics Of

Simultaneous Organic Matter Removal in a Cyclic Activated Sludge Reactor from Municipal Waste Water

2010 ◽  
Vol 113-116 ◽  
pp. 952-955
Author(s):  
Hong Wei Wang ◽  
Jian Huang ◽  
Xin Yu Wang ◽  
Xiao Hong Wu ◽  
Tie Dong Liu ◽  
...  
Keyword(s):  
Waste Water ◽  
Organic Matter ◽  
Activated Sludge ◽  
Municipal Waste ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Organic Matter Removal ◽  
Activated Sludge Reactor ◽  
Aerobic And Anaerobic ◽  
Degradation Ability

The aerobic and anaerobic cyclic activated sludge reactor of A/O process was separated into an A/O domestication segments and organic matter removal ability strengthen segments. In the A/O disposal system, organic carbon degradation, nitrogen and phosphorus removal from municipal waste water in reactor were investigated. Results showed that good performance of the A/O disposal system was achieved and the highest removal efficiencies of COD, TN and TP were 96%, 50% and 75%, respectively. When organic loadings varied from low to high, the removal ability increased and then the hybrid microbe in activated sludge degradation ability became strong. So the cyclic activated sludge was a useful method for eliminate organic matter removal from municipal waste water.

Kinetics of Organic Matter Removal in a Chemical Sequential Reactor (CSR)

1993 ◽  
Vol 15 (3) ◽  
pp. 201-211 ◽  
Author(s):  
R. Hausler ◽  
F.G. Briére ◽  
P. Béron
Keyword(s):  
Organic Matter ◽  
Organic Matter Removal ◽  
Kinetics Of

Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal

2014 ◽  
Vol 70 (1) ◽  
pp. 76-81 ◽  
Author(s):  
M. M. Pérez ◽  
J. M. Hernández ◽  
J. Bossens ◽  
T. Jiménez ◽  
E. Rosa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Removal Efficiency ◽  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Domestic Wastewater ◽  
Vertical Flow ◽  
Order Model ◽  
Organic Matter Removal ◽  
Vertical Flow Constructed Wetlands ◽  
Kinetics Of

The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m2) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From the sixth week of operation, the performance of the wetland stabilized, and a significant reduction in pollutant concentration of the effluent wastewater was obtained. Also a significant increase of dissolved oxygen (5 mg/l) was obtained. The organic matter removal efficiency was greater than 85% and the nutrient removal efficiency was greater than 75% in the vertical subsurface wetland. Nitrogen and biochemical oxygen demand (BOD) removal could be described by a first-order model. The kinetic constants were 3.64 and 3.27 d−1 for BOD and for total nitrogen, respectively. Data on the removal of phosphorus were adapted to a second-order model. The kinetic constant was 0.96 (mg/l)−1 d−1. The results demonstrated the potential of vertical flow constructed wetlands to clean treated domestic wastewater before discharge into the environment.

The Use of Anoxic Selectors for the Control of Low F/M Activated Sludge Bulking

1989 ◽  
Vol 21 (6-7) ◽  
pp. 609-619 ◽  
Author(s):  
Y.-J. Shao ◽  
David Jenkins
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Pilot Plant ◽  
Detention Time ◽  
Substrate Removal ◽  
Batch System ◽  
Sludge Bulking ◽  
N Removal ◽  
Soluble Substrate ◽  
Activated Sludge Systems

Laboratory and pilot plant experiments on anoxic selector activated sludge systems were conducted on two wastewaters in some cases supplemented with nitrate, acetate or glucose. To prevent bulking sufficient anoxic selector detention time and nitrate levels must be available to reduce selector effluent soluble COD to below 100 mg/l and to reduce readily metabolizable organic matter to virtually zero (< 1 mg/l). Soluble COD/NO3-N removal stoichiometry is in the range 6.0-6.7. Selector systems have elevated soluble substrate removal and denitrification rates compared to CSTR systems. These rates are not affected greatly by temperature (20-25°C) for CSTR sludges but are for selector sludges. Upon exhaustion of nitrate in a selector soluble COD leaks out of the activated sludge in significant amounts. Thiothrix sp. and type 021N denitrify only to NO2 and at much slower rates than Zoogloearamigera does to N2. A sequencing batch system provides an optimistic estimate of the SVI that can be obtained by an anoxic selector system.

Comparative Kinetic Study of Carrier Type in a Moving Bed System Applied to Organic Matter Removal in Urban Wastewater Treatment

2011 ◽  
Vol 223 (4) ◽  
pp. 1699-1712 ◽  
Author(s):  
J. Martín-Pascual ◽  
C. López-López ◽  
A. Cerdá ◽  
J. González-López ◽  
E. Hontoria ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Kinetic Study ◽  
Urban Wastewater ◽  
Organic Matter Removal ◽  
Moving Bed ◽  
Urban Wastewater Treatment
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