TY - JOUR
T1 - Hydrogen sulfide control in sewer systems
T2 - A critical review of recent progress
AU - Zhang, Liang
AU - Qiu, Yan-Ying
AU - Sharma, Keshab R.
AU - Shi, Tao
AU - Song, Yarong
AU - Sun, Jianliang
AU - Liang, Zhensheng
AU - Yuan, Zhiguo
AU - Jiang, Feng
PY - 2023/7/15
Y1 - 2023/7/15
N2 - In sewer systems where anaerobic conditions are present, sulfate-reducing bacteria reduce sulfate to hydrogen sulfide (H2S), leading to sewer corrosion and odor emission. Various sulfide/corrosion control strategies have been proposed, demonstrated, and optimized in the past decades. These included (1) chemical addition to sewage to reduce sulfide formation, to remove dissolved sulfide after its formation, or to reduce H2S emission from sewage to sewer air, (2) ventilation to reduce the H2S and humidity levels in sewer air, and (3) amendments of pipe materials/surfaces to retard corrosion. This work aims to comprehensively review both the commonly used sulfide control measures and the emerging technologies, and to shed light on their underlying mechanisms. The optimal use of the above-stated strategies is also analyzed and discussed in depth. The key knowledge gaps and major challenges associated with these control strategies are identified and strategies dealing with these gaps and challenges are recommended. Finally, we emphasize a holistic approach to sulfide control by managing sewer networks as an integral part of an urban water system. © 2023 Elsevier Ltd
AB - In sewer systems where anaerobic conditions are present, sulfate-reducing bacteria reduce sulfate to hydrogen sulfide (H2S), leading to sewer corrosion and odor emission. Various sulfide/corrosion control strategies have been proposed, demonstrated, and optimized in the past decades. These included (1) chemical addition to sewage to reduce sulfide formation, to remove dissolved sulfide after its formation, or to reduce H2S emission from sewage to sewer air, (2) ventilation to reduce the H2S and humidity levels in sewer air, and (3) amendments of pipe materials/surfaces to retard corrosion. This work aims to comprehensively review both the commonly used sulfide control measures and the emerging technologies, and to shed light on their underlying mechanisms. The optimal use of the above-stated strategies is also analyzed and discussed in depth. The key knowledge gaps and major challenges associated with these control strategies are identified and strategies dealing with these gaps and challenges are recommended. Finally, we emphasize a holistic approach to sulfide control by managing sewer networks as an integral part of an urban water system. © 2023 Elsevier Ltd
KW - Electrochemical system
KW - Free nitrous acid
KW - Online control of chemical dosing
KW - Sewer odor and corrosion
KW - Sulfate-reducing bacteria
KW - Sulfide-oxidizing bacteria
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U2 - 10.1016/j.watres.2023.120046
DO - 10.1016/j.watres.2023.120046
M3 - RGC 21 - Publication in refereed journal
C2 - 37224665
SN - 0043-1354
VL - 240
JO - Water Research
JF - Water Research
M1 - 120046
ER -
