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首页> 外文期刊>Journal of King Saud University >The hydrophilic/hydrophobic ratio vs. dissolved organics removal by coagulation – A review
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The hydrophilic/hydrophobic ratio vs. dissolved organics removal by coagulation – A review

机译：凝结去除亲水/疏水比与溶解有机物的关系-综述

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This review discusses the hydrophilic/hydrophobic ratio as a function of the hydrophilic and hydrophobic contents removal by coagulation process. It is well established that coagulation process could bring a reduction in dissolved organic carbon of around 30–60% by increasing the coagulant dose and optimising reaction pH, in which large organic molecules with hydrophobic property was removed preferentially. Furthermore, the literature affirmed that the greater removal of UV-absorbing substances indicates that alum coagulation preferentially removed the hydrophobic fraction of the total organic carbon. For the hydrophobic fraction, it needs to be removed entirely without its transformation into hydrophilic fractions by coagulation process avoiding pre-chlorination/pre-oxidation due to the risk of organic molecules fragmentation. Determining the exact numerical values of the hydrophilic/hydrophobic ratio for raw water and treated water at different stages of the treatment processes in a water treatment plant, as for the DCO/DBO 5 ratio in the case of wastewater treatment, would help on more focusing on OM control and removal.
机译：这篇评论讨论了亲水/疏水比与通过凝聚过程去除亲水和疏水成分的函数。公认的是，混凝过程可通过增加混凝剂剂量和优化反应pH来减少约30-60％的溶解有机碳，其中优先去除具有疏水性的大有机分子。此外，文献确认紫外线吸收物质的去除量更大表明明矾凝结法优先去除了总有机碳的疏水部分。对于疏水部分，需要通过凝结过程将其完全除去而不使其转变为亲水部分，以避免由于有机分子破碎的风险而进行预氯化/预氧化。确定水处理厂中处理过程不同阶段的原水和处理后水的亲水/疏水比的确切数值，如废水处理中的DCO / DBO 5比，将有助于更加集中关于OM控制和删除。

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