Aerobic biodegradation of polydiallyldimethylammonium chloride-acrylic-acrylamide-hydroxyethyl acrylate/ZnO nanocomposite in an activated sludge system

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 21277-21284 ◽  
Author(s):  
Xia Zhao ◽  
Hongrui Ma ◽  
Jianzhong Ma ◽  
Dangge Gao ◽  
Jing Xu ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Aerobic Biodegradation ◽  
Polydiallyldimethylammonium Chloride ◽  
Activated Sludge System ◽  
System P

Biodegradation studies of polydiallyldimethylammonium chloride-acrylic-acrylamide-hydroxyethyl acrylate/ZnO (P(DMDAAC-AA-AM-HEA)/ZnO) nanocomposite were performed in a simulated aerobic activated sludge system.

The effect of ZnO on aerobic biodegradation of a novel polyacrylate tannage in activated sludge system

2015 ◽  
Vol 57 (11) ◽  
pp. 4982-4993 ◽  
Author(s):  
Xiang fei Lü ◽  
Hong rui Ma ◽  
Kai Du ◽  
Ran Zhao ◽  
Xia Zhao ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Aerobic Biodegradation ◽  
Activated Sludge System

The effects of carbon nanotubes on nitrogen and phosphorus removal from real wastewater in the activated sludge system

RSC Advances ◽  
2014 ◽  
Vol 4 (86) ◽  
pp. 45953-45959 ◽  
Author(s):  
Xiong Zheng ◽  
Yinglong Su ◽  
Yinguang Chen ◽  
Yuanyuan Wei ◽  
Mu Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Activated Sludge ◽  
Phosphorus Removal ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Activated Sludge System ◽  
System P ◽  
Real Wastewater

Potential effects of CNTs on activated sludge and performances of nitrogen and phosphorus removal from real wastewater.

A review of the treatment of low–medium strength domestic wastewater using aerobic granulation technology

2020 ◽  
Vol 6 (3) ◽  
pp. 464-490
Author(s):  
Angel Chyi En We ◽  
Azmi Aris ◽  
Nor Azimah Mohd Zain
Keyword(s):  
Activated Sludge ◽  
Domestic Wastewater ◽  
Promising Alternative ◽  
Aerobic Granulation ◽  
Conventional Activated Sludge ◽  
Activated Sludge System ◽  
System P ◽  
Medium Strength ◽  
Granulation Technology

In recent times, the treatment of actual low-medium strength domestic wastewater using aerobic granulation has been proposed as a promising alternative to replace the conventional activated sludge system.

Oxidation Ditch

2018 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Activated Sludge ◽  
Special Form ◽  
Oxidation Ditch ◽  
End Point ◽  
Activated Sludge System

As a part of activated sludge system, oxidation ditch has a special form like a canal without end point. Rotor is used to diffuse oxygen from air to the water.

Parameters for Measuring the Activity and Viability of Activated Sludge

1974 ◽  
Vol 9 (1) ◽  
pp. 235-249 ◽  
Author(s):  
S.G. Nutt ◽  
K.L. Murphy
Keyword(s):  
Organic Carbon ◽  
Activated Sludge ◽  
Biological System ◽  
Analytical Methods ◽  
Heterogeneous System ◽  
Removal Rate ◽  
Bacterial Species ◽  
Atp Content ◽  
Culture Studies ◽  
Activated Sludge System

Abstract Conventional wastewater parameters are accepted as inadequate estimates of the condition of activated sludge but numerous other indices have been suggested as specific measurements of the activity and viability of the biomass. Literature in the related fields of microbiology and biochemistry were reviewed in order to select the most appropriate activity parameters for application to a heterogeneous biological material. Modified analytical methods were applied to a well-controlled biological system containing a single predominant bacterial species to evaluate the relative merit of each as an indicator of viability and activity. The potential of each parameter in a complex heterogeneous system was determined by monitoring each index in a bench activated sludge system. The predominant culture studies indicated that the ATP content of the biomass and the dehydrogenase activity were potential indicators of cell viability in a simple system. However, in the complex activated sludge system, only the ATP content showed significant correlation to the organic carbon removal rate.

TREATABILITY OF 2,4-D PRODUCTION WASTEWATERS

1994 ◽  
Vol 30 (3) ◽  
pp. 73-78 ◽  
Author(s):  
O. Tünay ◽  
S. Erden ◽  
D. Orhon ◽  
I. Kabdasli
Keyword(s):  
Hydrogen Peroxide ◽  
Activated Sludge ◽  
Partial Oxidation ◽  
Chloride Concentration ◽  
Chemical Oxidation ◽  
Cod Removal ◽  
Optimum Conditions ◽  
Organic Loading ◽  
Activated Sludge System ◽  
Biological Treatability

This study evaluates the characterization and treatability of 2,4-D production wastewaters. Wastewaters contain 20000-40000 mg/l COD, 17000-30000 mg/l chloride and pH is around 1.0. Chemical oxidation with hydrogen peroxide provided almost complete COD removal. The optimum conditions are 3:1 H2O2/COD oxidant dosage, 3000 mg/l Fe3+ as catalyst and pH 3. Partial oxidation at 0.5:1 H2O2//COD ratio is also effective providing 67% COD removal. A batch activated sludge system is used for biological treatability. Dilution is needed to maintain a tolerable chloride concentration which increases through COD removal. pH also increased during COD removal. 85% COD removal is obtained for the 50% dilution at an organic loading of 0.3 day‒1 on a COD basis. Completely and partially oxidized wastewaters are also treated in the activated sludge down to 30 mg/l BOD5.

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