ABSTRACT

The Erhai Lake basin dominated by agricultural production had a total sewage interception system and was selected as the study area. Survey data showed the total steroid estrogens (SEs) production was 55.97 kg/year (EEQ-E2β) in the whole basin and the main source of SEs was swine breeding (57%). The results indicated that unsatisfactory removal effect of SEs could be related to insufficient influent carbon sources as a result of the total sewage collection. The observed average concentrations of E1, E2α, E2β, E3 and EE2 in rivers/ditches were 25.9 ng/L, 43.5 ng/L, 14.4 ng/L, 49.4 ng/L and 24.5 ng/L, and SEs in ditches were significantly higher than that in rivers, proving the influence of the irrigation tailwater. Above, the annual SEs contribution for Erhai Lake was estimated, and the correlation coefficient of SEs and water quality of inflow rivers/ditches indicated that SEs had a certain correlation with nitrogen.

摘要

以农业为主的海流域拥有完整的污水截流系统，被选为研究区域。调查数据显示，整个流域的甾体雌激素（SEs）总产量为55.97千克/年（EEQ-E2β），而SEs的主要来源是猪的繁殖（57％）。结果表明，由于污水收集总量大，SEs去除效果不理想可能与进水碳源不足有关。河流/沟渠中的E1，E2α，E2β，E3和EE2的平均浓度分别为25.9 ng / L，43.5 ng / L，14.4 ng / L，49.4 ng / L和24.5 ng / L，沟渠中的SEs显着高于河流，证明了灌溉尾水的影响。以上是对，海年度SE贡献的估算，