Assessment of input of organic micropollutants and microplastics into the Baltic Sea by urban waters
Assessment of input of organic micropollutants and microplastics into the Baltic Sea by urban waters
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DOI：
10.1016/j.marpolbul.2019.07.014
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发表时间：
2019-11-01
影响因子：
5.8
通讯作者：
Bester, Kai
中科院分区：
文献类型：
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作者：
Bollmann, Ulla E.;Simon, Marta;Bester, Kai
我们评估了与废水有关的不同微污染物和微塑料是如何被引入波罗的海的。评估了未经处理的废水、处理过的废水、处理过和未经处理的雨水径流以及综合下水道溢流（CSO）在质量平衡方面的相关性，以及微污染物和塑料流入波罗的海的相对情况。为了实现这一目标，采用了基于示范性下水道系统数据和单一来源中测量的微污染物浓度的模型。大多数化合物通过处理过的废水到达接收的波罗的海。少数例外是在废水处理厂中被去除到很高程度的化合物。对于这些化合物，与雨水（如特布特灵）或未经处理的废水（如三氯生）一起排放的排放物占主导地位。此外，从城市表面流出的水排出的化合物通过雨水径流进入海洋区域。这些数据用于预测波罗的海的总质量负荷和浓度。预计三氯生和TCPP（2-氯丙基磷酸盐）的质量负荷在0.1至5.9吨/年之间，微塑料颗粒的质量负荷在0.2吨/年之间。波罗的海开阔水域的预期浓度为0.01至26纳克/升。
We assess how different micropollutants and microplastics, connected to wastewater are introduced into the Baltic Sea. The relevance of untreated wastewater, treated wastewater, treated and untreated rain runoff, as well as combined sewer overflow (CSO), is assessed in respect to mass balance, as well as relative inflows of micropollutants and -plastics into the Baltic Sea. To achieve this, modelling based on data on exemplary sewer systems and measured micropollutant concentrations in the single sources were used. Most compounds reach the receiving Baltic Sea via treated wastewater. A few exceptions are compounds that are removed to a very high extent in wastewater treatment plants. For these compounds, the emissions with stormwater (e.g., terbutryn) or untreated wastewater (e.g., triclosan) are dominating. Additionally, compounds that are discharged with the water that is running off urban surfaces are introduced into marine areas via rain runoff. These data are used to forecast a total mass load and concentrations that can be expected in the Baltic Sea. Massloads are expected to be between 0.1 and 5.9 t/a for triclosan and TCPP (iris (2-chloropropyl) phosphate) and 0.2 t/a for microplastic particles. The expected concentrations in open Baltic Sea waters range from 0.01 to 26 ng/L.