Université Paris-Est, Laboratoire Eau, Environnement, Systèmes Urbains (LEESU), UMR MA 102 - AgroParisTech, 61 Avenue du Général de Gaulle, Créteil Cedex, France.
Université Paris-Est, Laboratoire Eau, Environnement, Systèmes Urbains (LEESU), UMR MA 102 - AgroParisTech, 61 Avenue du Général de Gaulle, Créteil Cedex, France.
Chemosphere. 2019 Mar;218:1050-1060. doi: 10.1016/j.chemosphere.2018.11.182. Epub 2018 Nov 27.
Several advanced treatments, such as ozonation or activated carbon adsorption, are currently considered for the removal of organic micropollutants (OMPs) in wastewater treatment plants (WWTP). However, little is known on the overall performances of a WWTP upgraded with those processes and the benefits provided regarding the elimination of multiple families of OMPs. In this study, 5 sampling campaigns were performed to determine the removal of 48 OMPs in a WWTP followed by an activated carbon pilot. The primary treatment had no effect on OMPs (removals < 20%), whereas the biological treatment removed OMPs that can be easily sorbed onto sludges or biodegraded (>60%). The additional elimination provided by the advanced treatment was not significant (<10%) for OMPs already well removed in the WWTP) but was substantial (>30%) for recalcitrant OMPs. Removals higher than 60% were obtained for all OMPs (except azithromycin and sulfamethoxazole) over the WWTP and the activated carbon pilot. The adsorption conditions (10 g/m fresh activated carbon addition) were not sufficient to achieve the 80% removal targeted in Switzerland for compounds suggested as indicator substances for wastewater treatment. A higher dose of activated carbon or the combination with another advanced treatment should be used to achieve a satisfactory removal of those compounds.
一些先进的处理方法，如臭氧氧化或活性炭吸附，目前被认为是去除废水处理厂（WWTP）中有机微污染物（OMPs）的方法。然而，对于用这些工艺升级的 WWTP 的整体性能以及在消除多种 OMP 家族方面提供的好处，人们知之甚少。在这项研究中，进行了 5 次采样活动，以确定在 WWTP 后进行活性炭中试的情况下，48 种 OMPs 的去除情况。一级处理对 OMPs 没有影响（去除率<20%），而生物处理去除了容易被污泥吸附或生物降解的 OMPs（>60%）。对于已经在 WWTP 中得到很好去除的 OMPs（除阿奇霉素和磺胺甲恶唑外），高级处理提供的额外去除效果不显著（<10%），但对于难去除的 OMPs 效果显著（>30%）。在 WWTP 和活性炭中试中，所有 OMPs（除阿奇霉素和磺胺甲恶唑外）的去除率均高于 60%。吸附条件（每立方米新鲜活性炭添加 10 克）不足以实现瑞士针对作为废水处理指示物质的化合物设定的 80%去除目标。应该使用更高剂量的活性炭或与另一种先进的处理方法结合使用，以实现这些化合物的令人满意的去除。
