Biological nitrogen removal using the supernatant of ozonized sludge as extra carbon source

Shuo Yang; Qunhui Wang; Tao Zhang; Peng Li; Chuanfu Wu

doi:10.1080/01919512.2011.604763

Biological nitrogen removal using the supernatant of ozonized sludge as extra carbon source

Shuo Yang, Qunhui Wang^*, Tao Zhang, Peng Li, Chuanfu Wu

^*Corresponding author for this work

Water Desalination & Reuse Center

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

7 Citations (SciVal)

Abstract

A sludge ozonation process with lab-scale anaerobic/oxic (A/O) system was used to investigate the utilization of the ozonized sludge (OS) supernatant as extra carbon source for denitrification. The optimal ozone dose for the sludge ozonation was 0.2 gO3/gSS. The concentrations of SCOD, BOD, NH3-N and TN in the supernatant increased respectively at this ozone dose. In the meantime, the sludge was significantly reduced. The OS supernatant had negative effect on nitrification because of low pH and alkalinity. After alkalinity adjustment, the A/O with the OS supernatant as the extra carbon source achieved a nitrogen removal rate of 78%, which was very close to the control experiment using glucose (79%).

Original language	English (US)
Pages (from-to)	410-416
Number of pages	7
Journal	Ozone: Science and Engineering
Volume	33
Issue number	5
DOIs	https://doi.org/10.1080/01919512.2011.604763
State	Published - Sep 2011

Keywords

Low Carbon Source
Nitrogen Removal
Ozone
Sludge
Wastewater

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry

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10.1080/01919512.2011.604763

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title = "Biological nitrogen removal using the supernatant of ozonized sludge as extra carbon source",

abstract = "A sludge ozonation process with lab-scale anaerobic/oxic (A/O) system was used to investigate the utilization of the ozonized sludge (OS) supernatant as extra carbon source for denitrification. The optimal ozone dose for the sludge ozonation was 0.2 gO3/gSS. The concentrations of SCOD, BOD, NH3-N and TN in the supernatant increased respectively at this ozone dose. In the meantime, the sludge was significantly reduced. The OS supernatant had negative effect on nitrification because of low pH and alkalinity. After alkalinity adjustment, the A/O with the OS supernatant as the extra carbon source achieved a nitrogen removal rate of 78%, which was very close to the control experiment using glucose (79%).",

keywords = "Low Carbon Source, Nitrogen Removal, Ozone, Sludge, Wastewater",

author = "Shuo Yang and Qunhui Wang and Tao Zhang and Peng Li and Chuanfu Wu",

note = "Funding Information: The authors gratefully acknowledge the financial support of the Major Sci-Tec Projects on Water Pollution Control and Management Foundation of China (2009ZX07529-007) and Beijing Natural Science Foundation (8112021); Thanks are due to Kikuchi ECO-Earth Co. Ltd., Tokyo, Japan for the providing of the micro-bubble generator, and we thank Mr. Takashige Kikuchi for his support to our study.",

year = "2011",

month = sep,

doi = "10.1080/01919512.2011.604763",

language = "English (US)",

volume = "33",

pages = "410--416",

journal = "Ozone: Science and Engineering",

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TY - JOUR

T1 - Biological nitrogen removal using the supernatant of ozonized sludge as extra carbon source

AU - Yang, Shuo

AU - Wang, Qunhui

AU - Zhang, Tao

AU - Li, Peng

AU - Wu, Chuanfu

N1 - Funding Information: The authors gratefully acknowledge the financial support of the Major Sci-Tec Projects on Water Pollution Control and Management Foundation of China (2009ZX07529-007) and Beijing Natural Science Foundation (8112021); Thanks are due to Kikuchi ECO-Earth Co. Ltd., Tokyo, Japan for the providing of the micro-bubble generator, and we thank Mr. Takashige Kikuchi for his support to our study.

PY - 2011/9

Y1 - 2011/9

N2 - A sludge ozonation process with lab-scale anaerobic/oxic (A/O) system was used to investigate the utilization of the ozonized sludge (OS) supernatant as extra carbon source for denitrification. The optimal ozone dose for the sludge ozonation was 0.2 gO3/gSS. The concentrations of SCOD, BOD, NH3-N and TN in the supernatant increased respectively at this ozone dose. In the meantime, the sludge was significantly reduced. The OS supernatant had negative effect on nitrification because of low pH and alkalinity. After alkalinity adjustment, the A/O with the OS supernatant as the extra carbon source achieved a nitrogen removal rate of 78%, which was very close to the control experiment using glucose (79%).

AB - A sludge ozonation process with lab-scale anaerobic/oxic (A/O) system was used to investigate the utilization of the ozonized sludge (OS) supernatant as extra carbon source for denitrification. The optimal ozone dose for the sludge ozonation was 0.2 gO3/gSS. The concentrations of SCOD, BOD, NH3-N and TN in the supernatant increased respectively at this ozone dose. In the meantime, the sludge was significantly reduced. The OS supernatant had negative effect on nitrification because of low pH and alkalinity. After alkalinity adjustment, the A/O with the OS supernatant as the extra carbon source achieved a nitrogen removal rate of 78%, which was very close to the control experiment using glucose (79%).

KW - Low Carbon Source

KW - Nitrogen Removal

KW - Ozone

KW - Sludge

KW - Wastewater

UR - http://www.scopus.com/inward/record.url?scp=80053072373&partnerID=8YFLogxK

U2 - 10.1080/01919512.2011.604763

DO - 10.1080/01919512.2011.604763

M3 - Article

AN - SCOPUS:80053072373

SN - 0191-9512

VL - 33

SP - 410

EP - 416

JO - Ozone: Science and Engineering

JF - Ozone: Science and Engineering

IS - 5

ER -

Biological nitrogen removal using the supernatant of ozonized sludge as extra carbon source

Abstract

Keywords

ASJC Scopus subject areas

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