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首页> 外文期刊>Journal of Environmental Management >Source identification and characterization of the accumulating non-biodegradable organics in Korean reservoirs
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Source identification and characterization of the accumulating non-biodegradable organics in Korean reservoirs

机译：韩国水库蓄积的不可生物降解有机物的来源识别和表征

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An increase in the chemical oxygen demand (COD) has been noticed in most Korean reservoirs. Therefore, this research systematically investigated the causes of organic accumulation. Samples of soil affecting the quality of water of reservoirs were collected at various sources and analyzed for their organic characteristics. The COD to biochemical oxygen demand (BOD) ratio was used as the key parameter in the evaluation of non-biodegradable (NBD) organic accumulation in the reservoirs. Soil samples containing plant roots were agitated, with the supernatant showing COD/BOD ratios of less than 2.8, while those of the composted tree leaves were greater than 5.0, suggesting that humic substances produced in forest areas are a major cause of NBD organic accumulation in reservoirs. In addition, the organic fractionation of the leachate from leaching tests showed that of the various types of hydrophobic natural organic matter (NOM), the larger molecular weight humic acid makes a greater contribution than fulvic acid to the increase in the NBD COD in Korean reservoirs.
机译：在韩国大多数水库中，化学需氧量（COD）均已增加。因此，本研究系统地研究了有机积累的原因。从各种来源收集影响水库水质的土壤样品，并分析其有机特征。 COD与生化需氧量（BOD）之比用作评估储层中不可生物降解（NBD）有机累积的关键参数。搅动含有植物根的土壤样品，上清液的COD / BOD比小于2.8，而堆肥的树叶大于5.0，表明森林区域产生的腐殖质是NBD有机积累的主要原因。水库。此外，浸出试验中浸出液的有机分馏显示，在各种类型的疏水性天然有机物（NOM）中，较大分子量的腐殖酸对富勒酸的贡献大于黄腐酸，对韩国水库中NBD COD的增加。

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