Hashimoto T, Onda K, Nakamura Y, Tada K, Miya A, Murakami T
Japan Sewage Works Agency, 3-3-1 Yotsuya, Tokyo, Japan.
Water Res. 2007 May;41(10):2117-26. doi: 10.1016/j.watres.2007.02.029. Epub 2007 Apr 9.
The presence of natural estrogens, 17beta-estradiol (E2), estrone (E1) and estriol (E3), as well as estrogenic activity in wastewater influents and secondary effluents were investigated in 20 full-scale wastewater treatment plants in Japan. In all of the influent samples, natural estrogens were detected at concentrations above the minimum limits of detection (0.5ng/L). The concentrations of natural estrogens detected in the effluent of oxidation ditch plants were generally lower than previously reported values. On the other hand, in the conventional activated sludge plants, increments of E1 during biological treatment were frequently observed although E2 and E3 were removed effectively in the process. The removal rates of natural estrogens or estrogenic activity show no observed statistical relationship with the solids retention time (SRT) and the hydraulic retention time (HRT). However, the plants with high SRT or HRT generally showed high and stable removal of both natural estrogens and estrogenic activity.
在日本的20座全尺寸污水处理厂中，对污水进水和二级出水中天然雌激素（17β-雌二醇（E2）、雌酮（E1）和雌三醇（E3））的存在情况以及雌激素活性进行了调查。在所有进水样本中，均检测到天然雌激素的浓度高于最低检测限（0.5ng/L）。氧化沟工艺污水处理厂出水中检测到的天然雌激素浓度通常低于先前报道的值。另一方面，在传统活性污泥法污水处理厂中，尽管在处理过程中E2和E3被有效去除，但经常观察到生物处理过程中E1有所增加。天然雌激素或雌激素活性的去除率与固体停留时间（SRT）和水力停留时间（HRT）之间未显示出统计学关系。然而，SRT或HRT较高的污水处理厂通常对天然雌激素和雌激素活性都具有较高且稳定的去除率。
