Impact of fungal pellets dosage on long-term stability of aerobic granular sludge

Mingyue Geng; Shijie You; Haijuan Guo; Fang Ma; Xiao Xiao; Jinna Zhang

doi:10.1016/j.biortech.2021.125106

Impact of fungal pellets dosage on long-term stability of aerobic granular sludge

Mingyue Geng
, Shijie You
, Haijuan Guo^*
, Fang Ma
, Xiao Xiao
, Jinna Zhang

^*Corresponding author for this work

School of Environment, Harbin Institute of Technology
Hebei University of Engineering

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

51 Scopus citations

Abstract

The effects of fungal pellets (FPs) dosage on both structural and functional stability of aerobic granular sludge (AGS) were investigated during 200-day operation. Results showed that the AGS induced by low (a dry mass ratio of FPs to seed sludge, 30%) and high FPs dosage (60%) exhibited good morphology integrity during the entire phase of operation, while the filamentous overgrowth and AGS breakup were observed in the control reactor (0% FPs). Moreover, the granules developed at high FPs dosage demonstrated excellent nutrients removal (COD: 93%; NH4⁺-N: 100%; TN: 77%) and stable bioactivity with a maximum specific oxygen uptake rate (SOUR) of 52.6 ± 2.6 mg O₂/(gVSS·h), a value being 12.2% and 26.7% higher than that of 30% and 0% dosage. The microbial community analysis revealed 60% FPs dosage enriched various functional bacteria involved in nutrients removal. This study suggests a sustainable strategy for improving structural and functional stability of AGS.

Original language	English
Article number	125106
Journal	Bioresource Technology
Volume	332
DOIs	https://doi.org/10.1016/j.biortech.2021.125106
State	Published - Jul 2021
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Aerobic granular sludge
Functional stability
Fungal pellets
Structural stability

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10.1016/j.biortech.2021.125106

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@article{ee29424f2fdb4de68e2757c0a0ea4481,

title = "Impact of fungal pellets dosage on long-term stability of aerobic granular sludge",

abstract = "The effects of fungal pellets (FPs) dosage on both structural and functional stability of aerobic granular sludge (AGS) were investigated during 200-day operation. Results showed that the AGS induced by low (a dry mass ratio of FPs to seed sludge, 30\%) and high FPs dosage (60\%) exhibited good morphology integrity during the entire phase of operation, while the filamentous overgrowth and AGS breakup were observed in the control reactor (0\% FPs). Moreover, the granules developed at high FPs dosage demonstrated excellent nutrients removal (COD: 93\%; NH4+-N: 100\%; TN: 77\%) and stable bioactivity with a maximum specific oxygen uptake rate (SOUR) of 52.6 ± 2.6 mg O2/(gVSS·h), a value being 12.2\% and 26.7\% higher than that of 30\% and 0\% dosage. The microbial community analysis revealed 60\% FPs dosage enriched various functional bacteria involved in nutrients removal. This study suggests a sustainable strategy for improving structural and functional stability of AGS.",

keywords = "Aerobic granular sludge, Functional stability, Fungal pellets, Structural stability",

author = "Mingyue Geng and Shijie You and Haijuan Guo and Fang Ma and Xiao Xiao and Jinna Zhang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = jul,

doi = "10.1016/j.biortech.2021.125106",

language = "英语",

volume = "332",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Impact of fungal pellets dosage on long-term stability of aerobic granular sludge

AU - Geng, Mingyue

AU - You, Shijie

AU - Guo, Haijuan

AU - Ma, Fang

AU - Xiao, Xiao

AU - Zhang, Jinna

PY - 2021/7

Y1 - 2021/7

N2 - The effects of fungal pellets (FPs) dosage on both structural and functional stability of aerobic granular sludge (AGS) were investigated during 200-day operation. Results showed that the AGS induced by low (a dry mass ratio of FPs to seed sludge, 30%) and high FPs dosage (60%) exhibited good morphology integrity during the entire phase of operation, while the filamentous overgrowth and AGS breakup were observed in the control reactor (0% FPs). Moreover, the granules developed at high FPs dosage demonstrated excellent nutrients removal (COD: 93%; NH4+-N: 100%; TN: 77%) and stable bioactivity with a maximum specific oxygen uptake rate (SOUR) of 52.6 ± 2.6 mg O2/(gVSS·h), a value being 12.2% and 26.7% higher than that of 30% and 0% dosage. The microbial community analysis revealed 60% FPs dosage enriched various functional bacteria involved in nutrients removal. This study suggests a sustainable strategy for improving structural and functional stability of AGS.

AB - The effects of fungal pellets (FPs) dosage on both structural and functional stability of aerobic granular sludge (AGS) were investigated during 200-day operation. Results showed that the AGS induced by low (a dry mass ratio of FPs to seed sludge, 30%) and high FPs dosage (60%) exhibited good morphology integrity during the entire phase of operation, while the filamentous overgrowth and AGS breakup were observed in the control reactor (0% FPs). Moreover, the granules developed at high FPs dosage demonstrated excellent nutrients removal (COD: 93%; NH4+-N: 100%; TN: 77%) and stable bioactivity with a maximum specific oxygen uptake rate (SOUR) of 52.6 ± 2.6 mg O2/(gVSS·h), a value being 12.2% and 26.7% higher than that of 30% and 0% dosage. The microbial community analysis revealed 60% FPs dosage enriched various functional bacteria involved in nutrients removal. This study suggests a sustainable strategy for improving structural and functional stability of AGS.

KW - Aerobic granular sludge

KW - Functional stability

KW - Fungal pellets

KW - Structural stability

UR - https://www.scopus.com/pages/publications/85103790784

U2 - 10.1016/j.biortech.2021.125106

DO - 10.1016/j.biortech.2021.125106

M3 - 文章

C2 - 33848820

AN - SCOPUS:85103790784

SN - 0960-8524

VL - 332

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 125106

ER -

Impact of fungal pellets dosage on long-term stability of aerobic granular sludge

Abstract

UN SDGs

Keywords

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