Formation of filamentous fungal pellets in aerobic granular sludge via reducing temperature and dissolved oxygen: Characteristics of filamentous fungi and denitrification performance

2021 ◽  
Vol 332 ◽  
pp. 125056
Author(s):  
Xiaoying Liu ◽  
Renjie Li ◽  
Rui Chen ◽  
Yuan Chen ◽  
Ao Zeng ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Filamentous Fungi ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Fungal Pellets

Kinetics of aerobic granular sludge treating low-strength synthetic wastewater at high dissolved oxygen

2018 ◽  
Vol 41 (11) ◽  
pp. 1455-1463 ◽  
Author(s):  
Tanner Ryan Devlin ◽  
Maciej S. Kowalski ◽  
Alessandro di Biase ◽  
Jan A. Oleszkiewicz
Keyword(s):  
Dissolved Oxygen ◽  
Granular Sludge ◽  
Synthetic Wastewater ◽  
Aerobic Granular Sludge ◽  
Low Strength ◽  
Kinetics Of

Research on the Characteristic of Dyeing-Printing Wastewater Treatment with Micro-Aerobic Granular Sludge

2013 ◽  
Vol 726-731 ◽  
pp. 2757-2760
Author(s):  
Ling Feng Zhu ◽  
Dou Dou Huang ◽  
Chao Ye ◽  
Xiao Min Wang ◽  
Jie Yan Wu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Dissolved Oxygen ◽  
Removal Rate ◽  
Control Valve ◽  
Aerobic Condition ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Dyeing Wastewater ◽  
Printing And Dyeing Wastewater ◽  
Mixed Water

In order to treat dyeing-printing wastewater, the experiment took reflux tank, self-regulating control valve making of medical infusion, air flow meter, dissolved oxygen instrument, aerator pumps and aeration equipment under the micro-aerobic condition by IC reactor. The result indicates that the concentration of dissolved oxygen at 0.3 ~ 0.5 mg/L, increasing the load of mixed water and in-flow water by 25% and 7% separately in turn, the experiment is feasible. When COD load reached 2188.2 mg/ L in the mixed wastewater, the components in printing and dyeing wastewater are poisonous and repressive to the grown of granular sludge, which also illuminates that the function of micro-aerobic granular sludge treating printing and dyeing wastewater is limitary. When the influent load reached 4655.1mg / L or so, dissolved oxygen was 0.3 ~ 0.5mg / L, HRT was 6h, the reactor worked best, this moment, the removal rate of COD could reach 85.8%.

Dissolved oxygen as a key parameter to aerobic granule formation

2008 ◽  
Vol 58 (4) ◽  
pp. 781-787 ◽  
Author(s):  
B. S. McSwain Sturm ◽  
R. L. Irvine
Keyword(s):  
Dissolved Oxygen ◽  
Shear Force ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Batch Reactors ◽  
Aerobic Granules ◽  
High Shear ◽  
Sequencing Batch Reactors ◽  
Granule Formation ◽  
Substrate Removal

Much research has asserted that high shear forces are necessary for the formation of aerobic granular sludge in Sequencing Batch Reactors (SBRs). In order to distinguish the role of shear and dissolved oxygen on granule formation, two separate experiments were conducted with three bench-scale SBRs. In the first experiment, an SBR was operated with five sequentially decreasing superficial upflow gas velocities ranging from 1.2 to 0.4 cm s−1. When less than 1 cm s−1 shear was applied to the reactor, aerobic granules disintegrated into flocs, with corresponding increases in SVI and effluent suspended solids. However, the dissolved oxygen also decreased from 8 mg L−1 to 5 mg L−1, affecting the Feast/Famine regime in the SBR and the substrate removal kinetics. A second experiment operated two SBRs with an identical shear force of 1.2 cm s−1, but two dissolved oxygen concentrations. Even when supplied a high shear force, aerobic granules could not form at a dissolved oxygen less than 5 mg L−1, with a Static Fill. These results indicate that the substrate removal kinetics and dissolved oxygen are more significant to granule formation than shear force.

Inoculation of aerobic granular sludge to achieve granulation under high dissolved oxygen and the associated mechanisms

2021 ◽  
Vol 42 ◽  
pp. 102168
Author(s):  
Xin Song ◽  
Shiquan Sun ◽  
Lean Zhou ◽  
Yang Gao ◽  
Meiyi Tang ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Granular Sludge ◽  
Aerobic Granular Sludge

Impact of fungal pellets dosage on long-term stability of aerobic granular sludge

2021 ◽  
Vol 332 ◽  
pp. 125106
Author(s):  
Mingyue Geng ◽  
Shijie You ◽  
Haijuan Guo ◽  
Fang Ma ◽  
Xiao Xiao ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Term Stability ◽  
Long Term Stability ◽  
Fungal Pellets
Sign in / Sign up

Export Citation Format

Share Document