Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system

Weitang Zhang; Yongzhen Peng; Nanqi Ren; Qingsong Liu; Yongzhi Chen

doi:10.1016/j.chemosphere.2013.08.047

Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system

Weitang Zhang
, Yongzhen Peng^*
, Nanqi Ren
, Qingsong Liu
, Yongzhi Chen

^*Corresponding author for this work

School of Environment

Beijing University of Technology

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

Abstract

A two-sludge system, combining anaerobic/anoxic/aerobic process with biological aerated filter (AAO-BAF), is used to treat domestic wastewater with low COD/N ratio (around 3.6). The volume ratio of anoxic to aerobic zone (V_ano/V_aer) of the AAO reactor gradually increased from 2:5 to 6:1, during which the nutrient removal was improved. However, phosphorous removal began to deteriorate noticeably while V_ano/V_aer increased to 7:0. The favorable V_ano/V_aer was between 2.5:1 and 6:1. When V_ano/V_aer was 6:1, the average removal efficiencies of COD, TN and PO43- were 89±4%, 83±3% and 99±1%, respectively. This study suggested the AAO-BAF system could achieve efficient nitrogen and phosphorous removal with limited carbon source.

Original language	English
Pages (from-to)	2859-2863
Number of pages	5
Journal	Chemosphere
Volume	93
Issue number	11
DOIs	https://doi.org/10.1016/j.chemosphere.2013.08.047
State	Published - Nov 2013

Keywords

AAO
BAF
COD/N ratio
Denitrifying phosphorus removal
Domestic wastewater

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10.1016/j.chemosphere.2013.08.047

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@article{a3f3aa50ebc64eb2a541872438944e87,

title = "Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system",

abstract = "A two-sludge system, combining anaerobic/anoxic/aerobic process with biological aerated filter (AAO-BAF), is used to treat domestic wastewater with low COD/N ratio (around 3.6). The volume ratio of anoxic to aerobic zone (Vano/Vaer) of the AAO reactor gradually increased from 2:5 to 6:1, during which the nutrient removal was improved. However, phosphorous removal began to deteriorate noticeably while Vano/Vaer increased to 7:0. The favorable Vano/Vaer was between 2.5:1 and 6:1. When Vano/Vaer was 6:1, the average removal efficiencies of COD, TN and PO43- were 89±4\%, 83±3\% and 99±1\%, respectively. This study suggested the AAO-BAF system could achieve efficient nitrogen and phosphorous removal with limited carbon source.",

keywords = "AAO, BAF, COD/N ratio, Denitrifying phosphorus removal, Domestic wastewater",

author = "Weitang Zhang and Yongzhen Peng and Nanqi Ren and Qingsong Liu and Yongzhi Chen",

year = "2013",

month = nov,

doi = "10.1016/j.chemosphere.2013.08.047",

language = "英语",

volume = "93",

pages = "2859--2863",

journal = "Chemosphere",

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TY - JOUR

T1 - Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system

AU - Zhang, Weitang

AU - Peng, Yongzhen

AU - Ren, Nanqi

AU - Liu, Qingsong

AU - Chen, Yongzhi

PY - 2013/11

Y1 - 2013/11

N2 - A two-sludge system, combining anaerobic/anoxic/aerobic process with biological aerated filter (AAO-BAF), is used to treat domestic wastewater with low COD/N ratio (around 3.6). The volume ratio of anoxic to aerobic zone (Vano/Vaer) of the AAO reactor gradually increased from 2:5 to 6:1, during which the nutrient removal was improved. However, phosphorous removal began to deteriorate noticeably while Vano/Vaer increased to 7:0. The favorable Vano/Vaer was between 2.5:1 and 6:1. When Vano/Vaer was 6:1, the average removal efficiencies of COD, TN and PO43- were 89±4%, 83±3% and 99±1%, respectively. This study suggested the AAO-BAF system could achieve efficient nitrogen and phosphorous removal with limited carbon source.

AB - A two-sludge system, combining anaerobic/anoxic/aerobic process with biological aerated filter (AAO-BAF), is used to treat domestic wastewater with low COD/N ratio (around 3.6). The volume ratio of anoxic to aerobic zone (Vano/Vaer) of the AAO reactor gradually increased from 2:5 to 6:1, during which the nutrient removal was improved. However, phosphorous removal began to deteriorate noticeably while Vano/Vaer increased to 7:0. The favorable Vano/Vaer was between 2.5:1 and 6:1. When Vano/Vaer was 6:1, the average removal efficiencies of COD, TN and PO43- were 89±4%, 83±3% and 99±1%, respectively. This study suggested the AAO-BAF system could achieve efficient nitrogen and phosphorous removal with limited carbon source.

KW - AAO

KW - BAF

KW - COD/N ratio

KW - Denitrifying phosphorus removal

KW - Domestic wastewater

UR - https://www.scopus.com/pages/publications/84887407092

U2 - 10.1016/j.chemosphere.2013.08.047

DO - 10.1016/j.chemosphere.2013.08.047

M3 - 文章

C2 - 24035691

AN - SCOPUS:84887407092

SN - 0045-6535

VL - 93

SP - 2859

EP - 2863

JO - Chemosphere

JF - Chemosphere

IS - 11

ER -

Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system

Abstract

Keywords

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