| Effect of low-temperature thermal drying on malodorous volatile organic compounds (MVOCs) emission of wastewater sludge: The relationship with microbial communities | |
Yang, Xiaofang ; Zhu, Xinmeng; Gao, Wei; Jiao, Ruyuan; Zhao, Shan; Wang, Jianwei Yu Dongsheng; Wang, Dongsheng
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| 2022-08-01 | |
| Source Publication | ENVIRONMENTAL POLLUTION
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| ISSN | 0269-7491 |
| Volume | 306Issue:0Pages:119423 |
| Abstract | Sludge treatment processes are the main source of nuisance odors in wastewater treatment plants. Apart from well-known odorants such as NH3 and H2S, malodorous volatile organic compounds (MVOCs) contribute largely to nuisance odors but are less concerned. In this work, the emission of MVOCs from wastewater sludges at different processing stages was measured, and the effects of dewatering and low-temperature thermal drying on the generation of sludge odor were investigated. The MVOCs were analyzed by olfactory measurements, head space gas chromatography-coupled ion mobility spectrometry (HS-GC-IMS), and head-space solid-phase micro extraction gas chromatography-mass spectrometry (HS-SPME-GC-MS). Low-temperature thermal drying treatment changed the odor categories and increased the odor intensity (OI) from moderate level (8-9) for raw sludges to strong (> 10) for dried sludge. The odor emission capacity of MVOCs, namely the concentration of MVOCs, increased for dried sludge. The major odorants of sludge after different processes included 2-MIB, geosmin, dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), hexanal, and decanal according to their odor activity values (OAVs). The bacterial community structures showed a correlation with the key MVOC odorants. Specifically, there was a significant positive correlation between the concentration of key odorants and the relative abundance of the phyla of Actinobacteria and Chloroflexi. Thus, low-temperature thermal drying had a significant effect on odor formation by acting on the microbial community of sludge. |
| Department | 环境水质学国家重点实验室 ; 环境水质学国家重点实验室 |
| Keyword | WHEEL CLASSIFICATION SCHEME SULFUR-COMPOUNDS SEWAGE-SLUDGE ODOROUS COMPOUNDS BIOSOLIDS ANTIMONY |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47689 |
| Collection | 环境水质学国家重点实验室 |
| Corresponding Author | Yang, Xiaofang |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yangtze River Delta Res Ctr Ecoenvironm Sci, Yiwu 322000, Peoples R China 4.Beijing Drainage Grp Co Ltd, Res & Dev Ctr, Beijing 100124, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085 |
| Recommended Citation GB/T 7714 | Yang, Xiaofang,Zhu, Xinmeng,Gao, Wei,et al. Effect of low-temperature thermal drying on malodorous volatile organic compounds (MVOCs) emission of wastewater sludge: The relationship with microbial communities[J]. ENVIRONMENTAL POLLUTION,2022,306(0):119423. |
| APA | Yang, Xiaofang.,Zhu, Xinmeng.,Gao, Wei.,Jiao, Ruyuan.,Zhao, Shan.,...&Wang, Dongsheng.(2022).Effect of low-temperature thermal drying on malodorous volatile organic compounds (MVOCs) emission of wastewater sludge: The relationship with microbial communities.ENVIRONMENTAL POLLUTION,306(0),119423. |
| MLA | Yang, Xiaofang,et al."Effect of low-temperature thermal drying on malodorous volatile organic compounds (MVOCs) emission of wastewater sludge: The relationship with microbial communities".ENVIRONMENTAL POLLUTION 306.0(2022):119423. |
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| Effect of low-temper（2264KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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