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- Title
人工快渗-湿地系统对生活污水中DOM 的去除.
- Authors
王刚; 刘洋; 戴本林
- Abstract
Derivative fluorescence and two-dimensional correlation spectroscopy (2D-COS) were used to analyze the removal effects of fluorescence components in DOM from urban domestic sewage by constructed rapid infiltration-wetland treatment system. The result showed that derivative fluorescence spectrum can identify four obvious fluorescence regions, which were protein-like region A1 (250~298 nm), fulvic-like region A2 (298~353 nm), fulvic-like region A3 (353~390 nm) and humic-like A4 (390~550 nm). The treatment system indicated an excellent removal effect of protein-like materials, and the removal rates of three samples were 61.73%, 40.05% and 71.49%, respectively. The constructed wetland can further remove fluorescent substances in the first two treatment units. Fluorescence regional integral showed that the total removal rates of fluorescent substances in the three samples by constructed rapid infiltration-wetland treatment system were 72.12%, 43.03% and 63.09%, respectively. The inflow load of urban sewage has an important influence on the treatment effect of the system. The 2D-COS showed that the preferential change of fluorescent components was in the order as protein-like (275 nm), humic-like (418 nm), fulvic-like (366 nm), humic-like (433 nm) and humic-like acid fluorescence (540 nm). The results of moving-window 2D-COS showed that protein-like components showed a distinct change in the whole treatment system, which was consistent with the high removal effect of protein-like components. Therefore, the study on the removal effect of fluorescent DOM can more easily and quickly reflect the efficiency of constructed rapid infiltration-wetland treatment system.
- Subjects
FLUOROPHORES; SEWAGE; CONSTRUCTED wetlands; TREATMENT effectiveness; FLUORESCENCE; DISSOLVED organic matter; SEWAGE purification; FLUORESCENCE spectroscopy
- Publication
Environmental Science & Technology (10036504), 2022, Vol 45, Issue 10, p93
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.0886.22.338