Hernandez-Raquet Guillermina, Soef Antoine, Delgenès Nadine, Balaguer Patrick
INRA UR050, Laboratoire de Biotechnologie de l'Environnement, Avenue des Etangs, Narbonne F-11100, France.
Water Res. 2007 Jun;41(12):2643-51. doi: 10.1016/j.watres.2007.02.039. Epub 2007 Apr 16.
The estrogenic compound nonylphenol (NP) is frequently found in sludge from sewage treatment works. Hence, when sewage sludge is spread on the land, endocrine-disrupting compounds may get into the soil. The goal of this study was to investigate the extent to which aerobic mesophilic treatment in continuous reactors permits the removal of NP from sludge and how this process may be useful for treating anaerobically stabilised sludge. We also report on the behaviour of NP during the anaerobic treatment of sludge. The reduction in sludge estrogenic activity observed in the different types of treatment, as measured using estrogen-responsive reporter cells lines (MELN bioassay), was compared with NP removal rates. Under anaerobic conditions, no degradation of NP and its estrogenic activity was observed. Indeed, an accumulation of the compound occurred. In contrast, high removal of NP was achieved in aerobic conditions as well as in aerobic Post-treatment of anaerobically pre-digested sludge, with a concomitant reduction of the sludge's estrogenic potency.
雌激素化合物壬基酚（NP）在污水处理厂的污泥中经常被发现。因此，当污水污泥施用于土地时，内分泌干扰化合物可能会进入土壤。本研究的目的是调查连续反应器中的好氧中温处理在多大程度上能够去除污泥中的NP，以及该过程如何有助于处理厌氧稳定化污泥。我们还报告了NP在污泥厌氧处理过程中的行为。使用雌激素反应报告细胞系（MELN生物测定法）测量，比较了不同类型处理中观察到的污泥雌激素活性降低与NP去除率。在厌氧条件下，未观察到NP及其雌激素活性的降解。事实上，该化合物发生了积累。相比之下，在好氧条件下以及对厌氧预消化污泥进行好氧后处理时，NP的去除率很高，同时污泥的雌激素效力也相应降低。
