Residential College | false |
Status | 已發表Published |
Development of cost-effective and long-lasting integrated technology for H2S control from sludge in wastewater treatment plants | |
Hao, Tianwei1; Zeng, Jiajia2; Pan, Jianyu2; Huang, Wenzhuo2; Kong, Zhe3; Sun, Jianliang2 | |
2023-02-01 | |
Source Publication | Environmental Science-Water Research & Technology |
ISSN | 2053-1400 |
Volume | 9Issue:2Pages:433-441 |
Abstract | Hydrogen sulfide (HS) production and emissions from sulfate-reducing bacteria (SRB) during wastewater and sludge (primary sludge and excess activated sludge) treatment and disposal are major concerns due to odor nuisance, corrosion, and health risks associated with HS. The widely used chemical dosing approach requires high amounts of chemicals, resulting in high treatment costs. To develop cost-effective and long-lasting technologies for the HS control from the sludge, this study proposed integrated methods, including oxidant-glutaraldehyde dosing, aeration-oxidant dosing, and oxidant-iron oxide (FeO) dosing. Two oxidants (hydrogen peroxide and sodium chlorite) and one biocide (glutaraldehyde) were selected. All the integrated methods yielded good performances in the HS control, from the sludge, due to the synergistic pathways involved, namely, sulfide oxidation by oxidants and FeO, and the inhibition of the SRB activity by glutaraldehyde. The optimal removal efficiencies of HS in the gas phase and dissolved sulfide in the sludge phase were up to 99.8% and 99%, respectively, within 4 h. Moreover, the integration of oxidants with glutaraldehyde and FeO decreased the hydrogen sulfide release by 66-93%, in prolonged periods of 24-48 h. The integrated oxidant-glutaraldehyde dosing and aeration-oxidant dosing, with treatment costs between 0.5-1.57 USD per m sludge, were more cost-effective than the integrated dosing of FeO (12.22-13.68 USD per m sludge), as well as the case of dosing a single oxidant (0.53-2.35 USD per m sludge). The findings demonstrated that the integrated oxidant-glutaraldehyde and aeration-oxidant dosing could be cost-effective and long-lasting alternatives to the conventional chemical dosings for HS control from sludge, oil wells, and reservoirs. This shows the potential industrial application of this work. |
DOI | 10.1039/d2ew00496h |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Engineering ; Environmental Sciences & Ecology ; Water Resources |
WOS Subject | Engineering, Environmental ; Environmental Sciences ; Water Resources |
WOS ID | WOS:000896682000001 |
Publisher | Royal Society of Chemistry |
Scopus ID | 2-s2.0-85144795052 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | Faculty of Science and Technology DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
Corresponding Author | Sun, Jianliang |
Affiliation | 1.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China 2.Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, China 3.School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China |
First Author Affilication | Faculty of Science and Technology |
Recommended Citation GB/T 7714 | Hao, Tianwei,Zeng, Jiajia,Pan, Jianyu,et al. Development of cost-effective and long-lasting integrated technology for H2S control from sludge in wastewater treatment plants[J]. Environmental Science-Water Research & Technology, 2023, 9(2), 433-441. |
APA | Hao, Tianwei., Zeng, Jiajia., Pan, Jianyu., Huang, Wenzhuo., Kong, Zhe., & Sun, Jianliang (2023). Development of cost-effective and long-lasting integrated technology for H2S control from sludge in wastewater treatment plants. Environmental Science-Water Research & Technology, 9(2), 433-441. |
MLA | Hao, Tianwei,et al."Development of cost-effective and long-lasting integrated technology for H2S control from sludge in wastewater treatment plants".Environmental Science-Water Research & Technology 9.2(2023):433-441. |
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