Current wastewater treatment is not designed for the elimination of micropollutants (MP) and therefore these are released into the aquatic environment by means of the municipal wastewater. The MicroStop project investigates a combination of a fixed‐bed reactor (FBR) and a nanofiltration plant (NF) for the elimination of organic MP. NF acts as a barrier for MP while biological degradation of the pollutants is to be induced in the FBR. A simultaneous treatment of the retentate should be realized by its return to the FBR. The NF is to be supplied with energy by a large separation of organic matter in the primary clarification. The experiments showed that NF can eliminate more than 95% of the selected and detected MP on average, and therefore, this method represents a suitable barrier for these pollutants. The retentate of the NF was used to test the potential of the biological degradation in the FBR. The test results showed that a significant biological degradation of different MP took place in the FBR. The degradability of the substances could be verified by not detecting significant adsorption on sludge and fixed‐bed. For certain MP (sulfamethoxazole and carbamazepine) only little potential of biodegradation could be detected, which is confirmed by values from the literature. Apart from these two substances, the average degradation rate was 78%. The successful MP‐retention in connection with the biological degradation rates demonstrated the potential of the concept.

中文翻译：

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通过纳滤和生物膜反应器（MicroStop）去除废水中新兴的微污染物

当前的废水处理并非旨在消除微污染物（MP），因此这些污染物会通过市政废水释放到水生环境中。该MicroStop该项目研究了固定床反应器（FBR）和纳滤装置（NF）的组合，以消除有机MP。NF充当MP的屏障，同时在FBR中诱导污染物的生物降解。返回渗入FBR时应同时处理渗余物。在主要澄清中，将通过大量分离有机物来为NF提供能量。实验表明，NF可以平均消除超过95％的选定和检测到的MP，因此，该方法代表了这些污染物的合适屏障。NF的截留物用于测试FBR中生物降解的可能性。测试结果表明，不同的MP在FBR中发生了明显的生物降解。可以通过在污泥和固定床上未检测到明显的吸附来验证这些物质的可降解性。对于某些MP（磺胺甲基异恶唑和卡马西平），仅能检测到极少的生物降解潜力，这一点已得到文献报道的证实。除这两种物质外，平均降解率为78％。与生物降解率相关的成功的MP保留证明了该概念的潜力。