ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR H2S MANAGEMENT

Mohsina Sherief; Ashraf Aly Hassan; Mohamed Hamouda; Munjed Maraqa

doi:10.14455/ISEC.2022.9(1).AAW-03

ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR H2S MANAGEMENT

Mohsina Sherief, Ashraf Aly Hassan, Mohamed Hamouda, Munjed Maraqa

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH^© kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab^©. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.

Original language	English
Pages (from-to)	AAW-03-1-AAW-03-6
Journal	Proceedings of International Structural Engineering and Construction
Volume	9
Issue number	1
DOIs	https://doi.org/10.14455/ISEC.2022.9(1).AAW-03
Publication status	Published - 2022
Event	4th European and Mediterranean Structural Engineering and Construction Conference, EURO-MED-SEC-4 2022 - Virtual, Online Duration: Jun 20 2022 → Jun 25 2022

Keywords

Concrete corrosion
Hydrogen sulfide
Odor control
Pattern
Toxicity

ASJC Scopus subject areas

Building and Construction
Architecture
Civil and Structural Engineering
Safety, Risk, Reliability and Quality

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10.14455/ISEC.2022.9(1).AAW-03

Cite this

@article{5e760a26947e46508e85b73616aa5c3a,

title = "ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR H2S MANAGEMENT",

abstract = "Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH{\textcopyright} kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab{\textcopyright}. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.",

keywords = "Concrete corrosion, Hydrogen sulfide, Odor control, Pattern, Toxicity",

author = "Mohsina Sherief and Hassan, {Ashraf Aly} and Mohamed Hamouda and Munjed Maraqa",

note = "Funding Information: I would like to acknowledge and give my warmest thanks to my adviser Dr. Ashraf Aly Hassan who introduced me to this world of research and made this work possible. I would also like to thank my co-adviser Dr. Munjed Maraqa for his guidance. I would like to thank my family, Muhammed Sherief, Sabitha Sherief, and Waseem Sherief for their sacrifices and support throughout my life. I would also like to thank my husband, Hisham Ashraf for his support. Publisher Copyright: {\textcopyright} 2022 ISEC Press.; 4th European and Mediterranean Structural Engineering and Construction Conference, EURO-MED-SEC-4 2022 ; Conference date: 20-06-2022 Through 25-06-2022",

year = "2022",

doi = "10.14455/ISEC.2022.9(1).AAW-03",

language = "English",

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AU - Sherief, Mohsina

AU - Hassan, Ashraf Aly

AU - Hamouda, Mohamed

AU - Maraqa, Munjed

N1 - Funding Information: I would like to acknowledge and give my warmest thanks to my adviser Dr. Ashraf Aly Hassan who introduced me to this world of research and made this work possible. I would also like to thank my co-adviser Dr. Munjed Maraqa for his guidance. I would like to thank my family, Muhammed Sherief, Sabitha Sherief, and Waseem Sherief for their sacrifices and support throughout my life. I would also like to thank my husband, Hisham Ashraf for his support. Publisher Copyright: © 2022 ISEC Press.

PY - 2022

Y1 - 2022

N2 - Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH© kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab©. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.

AB - Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH© kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab©. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.

KW - Concrete corrosion

KW - Hydrogen sulfide

KW - Odor control

KW - Pattern

KW - Toxicity

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DO - 10.14455/ISEC.2022.9(1).AAW-03

M3 - Conference article

AN - SCOPUS:85136142553

SN - 2644-108X

VL - 9

SP - AAW-03-1-AAW-03-6

JO - Proceedings of International Structural Engineering and Construction

JF - Proceedings of International Structural Engineering and Construction

IS - 1

T2 - 4th European and Mediterranean Structural Engineering and Construction Conference, EURO-MED-SEC-4 2022

Y2 - 20 June 2022 through 25 June 2022

ER -

ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR H2S MANAGEMENT

Abstract

Keywords

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