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Partial nitrification and oxygen tra...

Cotter, Samuel Wesley.

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Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration./
Author:	Cotter, Samuel Wesley.
Description:	74 p.
Notes:	Source: Masters Abstracts International, Volume: 49-01, page: 0604.
Contained By:	Masters Abstracts International49-01.
Subject:	Environmental Studies. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1479974
ISBN:	9781124162980

Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration.
Cotter, Samuel Wesley.

Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration. - 74 p.

Source: Masters Abstracts International, Volume: 49-01, page: 0604.

Thesis (M.S.)--Iowa State University, 2010.

Excess nutrients in lakes, rivers, and streams harm aquatic ecosystems. Advanced treatment at wastewater treatment plants can reduce this pollutant load. An innovative nutrient removal system, ANAMMOX, anaerobically converts ammonium and nitrite to N2 gas. Because this system requires a 1:1.31 NH4+ : NO2- ratio, a partial nitrification system is coupled with the ANAMMOX system to provide the necessary substrates. A hollow fiber membrane reactor was employed to create this partial nitrification system. Gas mass transfer was first evaluated to determine the KLa oxygen transfer coefficient. Reactor parameters, such as mixing speed, membrane length, and gas pressure, were evaluated to determine how KLa was affected by these variables. This hollow fiber membrane was then used to control oxygen delivery to the partial nitrification system, producing an effluent with ammonium and nitrite. Controlling dissolved oxygen at low concentration selects for ammonium oxidizing bacteria, while nitrite oxidizing bacteria are suppressed. This system effectively treated influent ammonium concentrations ranging from 50 mg/L NH4 +-N to 250 mg/L NH4+-N. Real-time polymerase chain reaction (qPCR) was employed to verify the system preference for ammonium oxidizing bacteria. Hollow fiber membrane aeration is effective for controlling oxygen transfer.

ISBN: 9781124162980Subjects--Topical Terms:

1669635
Environmental Studies.

Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration.
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005 20111015105954.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781124162980
035 $a (UMI)AAI1479974
035 $a AAI1479974
040 $a UMI $c UMI
100 1 $a Cotter, Samuel Wesley. $3 1679977
245 1 0 $a Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration.
300 $a 74 p.
500 $a Source: Masters Abstracts International, Volume: 49-01, page: 0604.
500 $a Adviser: Shihwu Sung.
502 $a Thesis (M.S.)--Iowa State University, 2010.
520 $a Excess nutrients in lakes, rivers, and streams harm aquatic ecosystems. Advanced treatment at wastewater treatment plants can reduce this pollutant load. An innovative nutrient removal system, ANAMMOX, anaerobically converts ammonium and nitrite to N2 gas. Because this system requires a 1:1.31 NH4+ : NO2- ratio, a partial nitrification system is coupled with the ANAMMOX system to provide the necessary substrates. A hollow fiber membrane reactor was employed to create this partial nitrification system. Gas mass transfer was first evaluated to determine the KLa oxygen transfer coefficient. Reactor parameters, such as mixing speed, membrane length, and gas pressure, were evaluated to determine how KLa was affected by these variables. This hollow fiber membrane was then used to control oxygen delivery to the partial nitrification system, producing an effluent with ammonium and nitrite. Controlling dissolved oxygen at low concentration selects for ammonium oxidizing bacteria, while nitrite oxidizing bacteria are suppressed. This system effectively treated influent ammonium concentrations ranging from 50 mg/L NH4 +-N to 250 mg/L NH4+-N. Real-time polymerase chain reaction (qPCR) was employed to verify the system preference for ammonium oxidizing bacteria. Hollow fiber membrane aeration is effective for controlling oxygen transfer.
590 $a School code: 0097.
650 4 $a Environmental Studies. $3 1669635
650 4 $a Water Resource Management. $3 1669219
650 4 $a Engineering, Environmental. $3 783782
690 $a 0477
690 $a 0595
690 $a 0775
710 2 $a Iowa State University. $b Civil, Construction, and Environmental Engineering. $3 1022221
773 0 $t Masters Abstracts International $g 49-01.
790 1 0 $a Sung, Shihwu, $e advisor
790 1 0 $a Alleman, James E. $e committee member
790 1 0 $a Loynachan, Thomas E. $e committee member
790 $a 0097
791 $a M.S.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1479974