Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes

Chengpeng Lee; Hau Truong; Khoa Nam Ngo; Emily Karen Kin; Stephanie Fuentes; Xiaojue Chen; George Wells; Haydée De Clippeleir

Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes

Chengpeng Lee^*, Hau Truong, Khoa Nam Ngo, Emily Karen Kin, Stephanie Fuentes, Xiaojue Chen, George Wells, Haydée De Clippeleir

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The High-Rate Activated Sludge (HRAS) process, which aims to lower hydraulic and solids retention time, increases digestibility of diverted chemical oxygen demand while reducing mineralization. Meanwhile, the Enhanced Biological Phosphorus Removal (EBPR) method employs phosphorus accumulation organisms (PAOs) to absorb soluble phosphorus from wastewater. Challenges arise due to the slow growth rates of PAOs at aggressive solids retention times (SRTs) commonly employed in HRAS. This study aims to pinpoint the minimal SRT that sustains significant biological phosphorus removal, and to measure phosphorus removal through both assimilation and biological means, as well as evaluate sludge settling behavior. The results accentuate the importance of phosphorus removal and settling improvement for enhancing the overall system's efficiency.

Original language	English (US)
State	Published - 2023
Event	96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023 - Chicago, United States Duration: Sep 30 2023 → Oct 4 2023

Conference

Conference	96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023
Country/Territory	United States
City	Chicago
Period	9/30/23 → 10/4/23

Keywords

High-rated activated sludge
enhanced biological phosphate removal
flocculent settleability
polyphosphate accumulating organisms
short SRT
wastewater treatment

ASJC Scopus subject areas

Waste Management and Disposal
Water Science and Technology
Ecological Modeling
Environmental Chemistry
Pollution

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

Lee, C., Truong, H., Ngo, K. N., Kin, E. K., Fuentes, S., Chen, X., Wells, G., & De Clippeleir, H. (2023). Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes. Paper presented at 96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023, Chicago, United States.

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title = "Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes",

abstract = "The High-Rate Activated Sludge (HRAS) process, which aims to lower hydraulic and solids retention time, increases digestibility of diverted chemical oxygen demand while reducing mineralization. Meanwhile, the Enhanced Biological Phosphorus Removal (EBPR) method employs phosphorus accumulation organisms (PAOs) to absorb soluble phosphorus from wastewater. Challenges arise due to the slow growth rates of PAOs at aggressive solids retention times (SRTs) commonly employed in HRAS. This study aims to pinpoint the minimal SRT that sustains significant biological phosphorus removal, and to measure phosphorus removal through both assimilation and biological means, as well as evaluate sludge settling behavior. The results accentuate the importance of phosphorus removal and settling improvement for enhancing the overall system's efficiency.",

keywords = "High-rated activated sludge, enhanced biological phosphate removal, flocculent settleability, polyphosphate accumulating organisms, short SRT, wastewater treatment",

author = "Chengpeng Lee and Hau Truong and Ngo, {Khoa Nam} and Kin, {Emily Karen} and Stephanie Fuentes and Xiaojue Chen and George Wells and {De Clippeleir}, Hayd{\'e}e",

note = "Publisher Copyright: Copyright {\textcopyright} 2023 Water Environment Federation.; 96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023 ; Conference date: 30-09-2023 Through 04-10-2023",

year = "2023",

language = "English (US)",

}

Lee, C, Truong, H, Ngo, KN, Kin, EK, Fuentes, S, Chen, X, Wells, G & De Clippeleir, H 2023, 'Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes', Paper presented at 96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023, Chicago, United States, 9/30/23 - 10/4/23.

Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes. / Lee, Chengpeng; Truong, Hau; Ngo, Khoa Nam et al.
2023. Paper presented at 96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023, Chicago, United States.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes

AU - Lee, Chengpeng

AU - Truong, Hau

AU - Ngo, Khoa Nam

AU - Kin, Emily Karen

AU - Fuentes, Stephanie

AU - Chen, Xiaojue

AU - Wells, George

AU - De Clippeleir, Haydée

PY - 2023

Y1 - 2023

N2 - The High-Rate Activated Sludge (HRAS) process, which aims to lower hydraulic and solids retention time, increases digestibility of diverted chemical oxygen demand while reducing mineralization. Meanwhile, the Enhanced Biological Phosphorus Removal (EBPR) method employs phosphorus accumulation organisms (PAOs) to absorb soluble phosphorus from wastewater. Challenges arise due to the slow growth rates of PAOs at aggressive solids retention times (SRTs) commonly employed in HRAS. This study aims to pinpoint the minimal SRT that sustains significant biological phosphorus removal, and to measure phosphorus removal through both assimilation and biological means, as well as evaluate sludge settling behavior. The results accentuate the importance of phosphorus removal and settling improvement for enhancing the overall system's efficiency.

AB - The High-Rate Activated Sludge (HRAS) process, which aims to lower hydraulic and solids retention time, increases digestibility of diverted chemical oxygen demand while reducing mineralization. Meanwhile, the Enhanced Biological Phosphorus Removal (EBPR) method employs phosphorus accumulation organisms (PAOs) to absorb soluble phosphorus from wastewater. Challenges arise due to the slow growth rates of PAOs at aggressive solids retention times (SRTs) commonly employed in HRAS. This study aims to pinpoint the minimal SRT that sustains significant biological phosphorus removal, and to measure phosphorus removal through both assimilation and biological means, as well as evaluate sludge settling behavior. The results accentuate the importance of phosphorus removal and settling improvement for enhancing the overall system's efficiency.

KW - High-rated activated sludge

KW - enhanced biological phosphate removal

KW - flocculent settleability

KW - polyphosphate accumulating organisms

KW - short SRT

KW - wastewater treatment

UR - http://www.scopus.com/inward/record.url?scp=85179587844&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85179587844&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85179587844

T2 - 96th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2023

Y2 - 30 September 2023 through 4 October 2023

ER -

Determining washout SRT towards biological phosphorus removal and improved settleability in high rate activated sludge processes

Abstract

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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