Sidestream superoxygenation for wastewater treatment: Oxygen transfer in clean water and mixed liquor

被引：13

作者：

Barreto, Carlos M. ^{[1
,4
]}

Ochoa, Ivania M. ^{[1
]}

Garcia, Hector A. ^{[1
]}

Hooijmans, Christine M. ^{[1
]}

Livingston, Dennis ^{[2
]}

Herrera, Aridai ^{[3
]}

Brdjanovic, Damir ^{[1
,4
]}

机构：

[1] IHE Delft Inst Water Educ, Dept Environm Engn & Water Technol, Westvest 7, NL-2611 AX Delft, Netherlands

[2] OVIVO Water MBR Syst, 2404 Rutland Dr, Austin, TX 78758 USA

[3] JCI Ind Inc, 1161 SE Hamblen Rd Lees Summit, Kansas City, MO 64081 USA

[4] Delft Univ Technol, Dept Biotechnol, Van der Maasweg 9, NL-2629 HZ Delft, Netherlands

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2018年 / 219卷

关键词：

Speece cone; Oxygen transfer; Activated sludge; Aeration efficiency; Membrane bioreactor; Wastewater treatment; SCALE MEMBRANE BIOREACTORS; ACTIVATED-SLUDGE; SUSPENDED-SOLIDS; MASS-TRANSFER; SPEECE CONE; AERATION; PERFORMANCE; SYSTEMS; MBR;

D O I：

10.1016/j.jenvman.2018.04.035

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The performance of a pilot-scale superoxygenation system was evaluated in clean water and mixed liquor. A mass balance was applied over the pilot-scale system to determine the overall oxygen mass transfer rate coefficient (K(L)a, h(-1)), the standard oxygen transfer rate (SOTR, kg O-2 d(-1)), and the standard oxygen transfer efficiency (SOTE, %). Additionally, the alpha factor (alpha) was determined at a mixed liquor suspend solids (MLSS) concentration of approximately 5 g L-1 . SOTEs of nearly 100% were obtained in clean water and mixed liquor. The results showed that at higher oxygen flowrates, higher transfer rates could be achieved; this however, at expenses of the transfer efficiency. As expected, lower transfer efficiencies were observed in mixed liquor compared to clean water. Alpha factors varied between 0.6 and 1.0. However, values of approximately 1.0 can be obtained in all cases by fine tuning the oxygen flowrate delivered to the system. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：125 / 137

页数：13

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