Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment

Tingting Zhang; Qilin Wang; Liu Ye; Zhiguo Yuan

doi:10.1007/s10295-016-1742-x

Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment

Tingting Zhang
, Qilin Wang^*
, Liu Ye
, Zhiguo Yuan

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

Abstract

In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO₂) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5–3.1 % compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO₂-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 %) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS. © 2016, Society for Industrial Microbiology and Biotechnology.

Original language	English
Pages (from-to)	713-717
Journal	Journal of Industrial Microbiology and Biotechnology
Volume	43
Issue number	5
DOIs	https://doi.org/10.1007/s10295-016-1742-x
Publication status	Published - 1 May 2016
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

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

SDG 6 Clean Water and Sanitation
SDG 9 Industry, Innovation, and Infrastructure

Research Keywords

Anaerobically digested sludge
Free nitrous acid
Methane production
Post anaerobic digestion
Sludge reduction

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10.1007/s10295-016-1742-x

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title = "Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment",

abstract = "In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO2) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5–3.1 \% compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO2-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 \%) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS. {\textcopyright} 2016, Society for Industrial Microbiology and Biotechnology.",

keywords = "Anaerobically digested sludge, Free nitrous acid, Methane production, Post anaerobic digestion, Sludge reduction",

author = "Tingting Zhang and Qilin Wang and Liu Ye and Zhiguo Yuan",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2016",

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doi = "10.1007/s10295-016-1742-x",

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journal = "Journal of Industrial Microbiology and Biotechnology",

issn = "1367-5435",

publisher = "Oxford University Press",

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TY - JOUR

T1 - Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment

AU - Zhang, Tingting

AU - Wang, Qilin

AU - Ye, Liu

AU - Yuan, Zhiguo

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2016/5/1

Y1 - 2016/5/1

N2 - In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO2) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5–3.1 % compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO2-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 %) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS. © 2016, Society for Industrial Microbiology and Biotechnology.

AB - In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO2) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5–3.1 % compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO2-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 %) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS. © 2016, Society for Industrial Microbiology and Biotechnology.

KW - Anaerobically digested sludge

KW - Free nitrous acid

KW - Methane production

KW - Post anaerobic digestion

KW - Sludge reduction

UR - https://www.scopus.com/pages/publications/84957557871

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84957557871&origin=recordpage

U2 - 10.1007/s10295-016-1742-x

DO - 10.1007/s10295-016-1742-x

M3 - RGC 21 - Publication in refereed journal

C2 - 26856593

SN - 1367-5435

VL - 43

SP - 713

EP - 717

JO - Journal of Industrial Microbiology and Biotechnology

JF - Journal of Industrial Microbiology and Biotechnology

IS - 5

ER -

Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment

Abstract

Bibliographical note

UN SDGs

Research Keywords

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