Andersen Henrik, Siegrist Hansruedi, Halling-Sørensen Bent, Ternes Thomas A
Tile Danish University of Pharmaceutical Sciences, Institute of Analytical Chemistry, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
Environ Sci Technol. 2003 Sep 15;37(18):4021-6. doi: 10.1021/es026192a.
The fate of the highly potent endocrine disrupters estrone (E1), 17beta-estradiol (E2), and 17alpha-ethinylestradiol (EE2) was investigated in mechanical and biological sewage treatment as well as in sewage-sludge treatment at a municipal German sewage treatment plant (STP). The main outcome of the study was that a common municipal STP with an activated sludge system for nitrification and denitrification including sludge recirculation can appreciably eliminate natural and synthetic estrogens. As a consequence, the endocrine effects of biota in the receiving waters should be significantly reduced. All estrogen concentrations decreased gradually along the treatment train. In the STP effluent, the steroid estrogen concentrations were always below the quantification limit of 1 ng/L. The elimination efficiency of the natural estrogens (E1 and E2) exceeded 98%, and EE2 was reduced by more than 90%. The natural estrogens were largely degraded biologically in the denitrifying and aerated nitrifying tanks of the activated sludge system, whereas EE2 was only degraded in the nitrifying tank. Only about 5% of the estrogens are sorbed onto digested sewage sludge. It is very likely that conjugates (glucuronides and sulfates) of the estrogens were cleaved into the parent compounds mainly in the first denitrification tank.
在德国一家城市污水处理厂（STP），研究了高效内分泌干扰物雌酮（E1）、17β - 雌二醇（E2）和17α - 乙炔雌二醇（EE2）在机械和生物污水处理以及污泥处理中的命运。该研究的主要结果是，一个具有用于硝化和反硝化的活性污泥系统（包括污泥回流）的普通城市污水处理厂能够显著去除天然和合成雌激素。因此，受纳水体中生物群的内分泌效应应会显著降低。沿处理流程，所有雌激素浓度均逐渐降低。在污水处理厂的出水中，类固醇雌激素浓度始终低于1 ng/L的定量限。天然雌激素（E1和E2）的去除效率超过98%，EE2的去除率超过90%。天然雌激素在活性污泥系统的反硝化和曝气硝化池中主要通过生物降解，而EE2仅在硝化池中降解。只有约5%的雌激素吸附到消化后的污水污泥上。雌激素的结合物（葡萄糖醛酸苷和硫酸盐）很可能主要在第一个反硝化池中裂解为母体化合物。
