Characterization of dissolved organic matter extracted from water treatment sludge
Characterization of dissolved organic matter extracted from water treatment sludge
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DOI：
10.2166/ws.2020.120
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发表时间：
2020-09
期刊：
影响因子：
1.7
通讯作者：
M. Rosadi;Toshiro Yamada;H. Hudori;H. Tamaoki;Fusheng Li
中科院分区：
文献类型：
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作者：
M. Rosadi;Toshiro Yamada;H. Hudori;H. Tamaoki;Fusheng Li
研究了饮用水处理污泥在不同温度（5℃、20℃、40℃）下长期（7、14和21天）储存的好氧和厌氧培养过程中形成的溶解有机物（DOM）的特征。研究发现，高温厌氧培养和长期储存比有氧培养产生更高的有机物含量（40℃时为3.6-6.8倍）。高温引起DOM组分的变化，有氧培养中主要形成腐殖质类物质，厌氧培养中主要形成蛋白质类物质。结果表明，在厌氧培养期结束时，类腐殖质和类蛋白质物质的荧光强度分别增加了45%和22%。与厌氧培养中的相比，需氧培养中的紫外吸收 DOM 成分具有较低的分子量并且更加不均匀。
The characteristics of dissolved organic matter (DOM) that formed during the aerobic and anaerobic incubation of drinking water treatment sludge stored at different temperatures (5 C, 20 C, 40 C) for long periods (7, 14, and 21 days) were investigated. Anaerobic incubation at high temperatures with prolonged storage was found to result in higher organic content than aerobic incubation (3.6–6.8 times at 40 C). The high temperatures caused changes in the DOM fractions, with humic-like substances mainly formed in aerobic incubation and protein-like substances in anaerobic incubation. Results showed that the fluorescence intensity of humic-like and protein-like substances increased by 45% and 22%, respectively, at the end of the anaerobic incubation period. The UV-absorbing DOM constituents in aerobic incubation had lower molecular weights and were more heterogeneous than those in anaerobic incubation.