Treguer R, Couvert A, Wolbert D, Suty H, Randon G
Ecole Nationale Supérieure de Chimie de Rennes, Sciences Chimiques de Rennes, UMR CNRS 6226, Chimie et Ingénierie des Procédés - Avenue du Génŕal Leclerc - 35700 Rennes, France.
Environ Technol. 2007 Aug;28(8):861-9. doi: 10.1080/09593332808618850.
More restricting legislation on dissolved organic carbon (DOC), especially when applied to waters with high DOC contents and low turbidity, urges the drinking water industry to improve the removal of dissolved organic matter (DOM). Jar tests were carried out on sand-filtered water (SFW) and raw water (RW), with respectively 50 different particulate compounds and different cationic polymers. Analytical measurements of DOC and UV absorbance at 254 nm, as well as a characterisation by size exclusion chromatography (SEC), were performed in order to determine the efficiency of the process. Experiments on SFW showed that activated carbon was the only compound able to remove efficiently the residual DOC remaining after conventional treatments (up to 40% of reduction). Other trials on RW using mixes of ferric chloride (FeCl3) and cationic polymers (polyamines and polyDADMAC) pointed out that the molecular mass and the reticulation ratios have a significant influence on the efficiency of the treatment. Finally, the addition of activated carbons to the previous reagents significantly improved the observed removal efficiencies by similar amounts.
对溶解有机碳（DOC）实施更严格的法规，尤其是应用于高DOC含量和低浊度的水体时，促使饮用水行业改进溶解有机物（DOM）的去除效果。对砂滤水（SFW）和原水（RW）进行了烧杯试验，分别使用了50种不同的颗粒化合物和不同的阳离子聚合物。为了确定该工艺的效率，对DOC和254nm处的紫外线吸光度进行了分析测量，并通过尺寸排阻色谱（SEC）进行了表征。对砂滤水的实验表明，活性炭是唯一能够有效去除常规处理后残留DOC的化合物（去除率高达40%）。对原水使用氯化铁（FeCl3）和阳离子聚合物（多胺和聚二甲基二烯丙基氯化铵）混合物的其他试验指出，分子量和网状化比率对处理效率有显著影响。最后，在先前的试剂中添加活性炭显著提高了观察到的去除效率，且提高幅度相似。
