A2/O工艺处理污水中雌激素活性和典型雌激素水平变化

doi:10.11934/j.issn.1673-4831.2017.06.012

Abstract

Abstract:

As endocrine disrupting chemicals in the water environment is low in concentration, difficult to remove and highly hazardous, it is essential to get a full grasp of how estrogen in wastewater varies with the process of treatment in activity and concentration. To that end, samples of wastewater were collected from an urban wastewater treatment installation for analysis of concentrations and activities of 4 kinds of steroid estrogens, using the high performance liquid chromatography-UV detector-fluorescence detector (HPLC-UV-FLD) and the yeast estrogen screen (YES) method, separately. Moreover, enzyme linked immunosorbent assay (ELISA) was performed to determine concentrations of E2 in the wastewater under treatment. Results show that among the four kinds of estrogens detected in the effluent, E1 was the highest in concentration, reaching 87.97 ng·L^-1 and E2, the lowest being 5.50 ng·L^-1, which indicates that the steroid estrogen removal rate varied in the range of 88.83%-95.69%. The A²/O system was found to be able to lower activity of the estrogens by 73.33%. However, the estrogens in the effluent were still quite active with EEQ being 1.92 ng·L^-1. ELISA reveals that the concentration of E2 in the effluent varied in the range of 10.01-82.82 ng·L^-1, which indicates that the removal rate of E2 was 88.23%. Obviously ELISA and YES are quite consistent in determination. Therefore, it could be concluded that ELISA could be a workable supplement to in vitro assays of estrogens.

Key words: A²/O process, estrogens, estrogenicity, ELISA, removal rate

CLC Number:

X592

YOU Meng, ZHANG Qiu-ya, WANG Xiao-chang, MA Xiao-yan. Activity of Estrogen and Contents of Typical Estrogenic Compounds in A²/O Treated Wastewater[J]. Journal of Ecology and Rural Environment, 2017, 33(6): 571-576.

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Activity of Estrogen and Contents of Typical Estrogenic Compounds in A²/O Treated Wastewater

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Activity of Estrogen and Contents of Typical Estrogenic Compounds in A2/O Treated Wastewater

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Activity of Estrogen and Contents of Typical Estrogenic Compounds in A²/O Treated Wastewater