Research and Development Department, Ezequiel Dias Foundation, Conde Pereira Carneiro St, 80 Belo Horizonte, Brazil.
Environ Monit Assess. 2022 Mar 5;194(4):248. doi: 10.1007/s10661-022-09877-x.
Surfactants are substances that when in aquatic environments can cause negative impacts. Hospital effluents carry numerous chemicals daily, including surfactants, used in sanitization and disinfection procedures. These chemicals are found in the effluents and reach water bodies due to a lack of proper removal in the wastewater treatment plants. The present study investigated data about wastewater monitored from healthcare facilities located in the city of Belo Horizonte, Brazil, focusing on anionic surfactants. The results showed 72 establishments monitoring this parameter, resulting in a median concentration of 1 mg L and 2.49 mg L mean value of anionic surfactants, between 2007 and 2019. It is also observed in the correlation between surfactants and oils in all healthcare establishment sizes, except for the medium-sized. Although anionic surfactants are the most used in cleaning product formulations, cationic surfactants still do not have specific legislation in the studied country that dictates a limit for discharge into sewage; consequently, they are not routinely monitored in effluents. However, these compounds are used in the formulation of routine hospital products.
表面活性剂是在水生环境中会产生负面影响的物质。医院废水每天都含有大量的化学物质，包括用于消毒和清洁程序的表面活性剂。由于废水处理厂没有适当去除这些化学物质，因此它们会出现在废水中，并进入水体。本研究调查了巴西贝洛奥里藏特市医疗机构监测的废水数据，重点是阴离子表面活性剂。结果表明，有 72 家机构监测该参数，在 2007 年至 2019 年期间，其浓度中位数为 1mg/L，阴离子表面活性剂的平均值为 2.49mg/L。在所有规模的医疗机构中，都观察到了表面活性剂与油之间的相关性，中型规模的除外。尽管阴离子表面活性剂在清洁产品配方中使用最多，但在研究的国家中，阳离子表面活性剂仍没有具体的法规规定其排放到污水中的限值，因此，它们在废水中没有常规监测。然而，这些化合物被用于常规医院产品的配方中。
