Department of Biological Environment, Kangwon National University (KNU), Gangwon-do, South Korea.
Environ Technol. 2011 Oct;32(13-14):1597-604. doi: 10.1080/09593330.2010.545081.
Bioassays are becoming an important tool for assessing the toxicity of complex mixtures of substances in aquatic environments in which Daphnia magna is routinely used as a test organism. Bioassays outweigh physicochemical analyses and are valuable in the decision-making process pertaining to the final discharge of effluents from wastewater treatment plants as they measure the total effect of the discharge which is ecologically relevant. In this study, the aquatic toxicity of a textile plant effluent and river water downstream from the plant were evaluated with sulfur-oxidizing bacterial biosensors in continuous mode. Collected samples were analysed for different physicochemical parameters and 1,4-dioxane was detected in the effluent. The effluent contained a relatively high chemical oxygen demand of 60 mg L(-1), which exceeded the limit set by the Korean government for industrial effluent discharges. Results showed that both the effluent and river waters were toxic to sulfur-oxidizing bacteria. These results show the importance of incorporating bioassays to detect toxicity in wastewater effluents for the sustainable management of water resources.
生物测定法正成为评估水生环境中复杂物质混合物毒性的重要工具，其中大型溞通常被用作测试生物。生物测定法比物理化学分析更有优势，并且在与废水处理厂最终排放有关的决策过程中具有价值，因为它们可以衡量排放的总效应，这与生态相关。在这项研究中，使用硫氧化细菌生物传感器以连续模式评估了纺织厂废水和工厂下游河水的水生毒性。采集的样品进行了不同物理化学参数的分析，并在废水中检测到了 1,4-二恶烷。废水中含有相对较高的化学需氧量 60mg/L，超过了韩国政府为工业废水排放设定的限值。结果表明，废水和河水都对硫氧化细菌具有毒性。这些结果表明，在可持续水资源管理中，将生物测定法纳入废水毒性检测中非常重要。
