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首页> 外文期刊>Journal of Environmental Science and Health >Assessing an intermittently operated household scale slow sand filter paired with household bleach for the removal of endocrine disrupting compounds
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Assessing an intermittently operated household scale slow sand filter paired with household bleach for the removal of endocrine disrupting compounds

机译：评估间歇性操作的家用规模慢沙滤池与家用漂白剂的搭配，以去除内分泌干扰物

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Endocrine disrupting compounds (EDCs) are a contaminant of emerging concern throughout the world, including developing countries where centralized water and wastewater treatment plants are not common. In developing countries, household scale water treatment technologies such as the biosand filter (BSF) are used to improve drinking water quality. No studies currently exist on the ability of the BSF to remove EDCs. In this experiment, the BSF was evaluated for the removal of three EDCs, estrone (El), estriol (E3), and 17α-ethinyl estradiol (EE2). Removal results were compared to the slow sand filter (SSF) from the literature, which is similar to the BSF in principal but comparisons have revealed differences in removal of other water quality parameters between SSF and BSF. In general, the BSF minimally removed the compounds from spiked lake water as removal was less than 15% for all three compounds, though mass removal much higher than other studies in which the SSF was used. Household bleach was added to the rate was BSF effluent as suggested in order to achieve different Cl- concentrations (0.67, 2.0, 5.0, and 10.0 mg/L) and subsequent removal of EDCs by oxidation was examined. Concentrations were reduced ＞ 98% for all compounds when the Cl- concentration was greater than 5 mg/L. Removal efficiency was ＞ 50% at the 0.67 mg/L Cl- concentration, while almost 70% removal was observed for all compounds at the 2.0 mg/L Cl- concentration.
机译：内分泌干​​扰化合物（EDCs）是世界范围内日益引起关注的污染物，包括发展中国家的集中式水和废水处理厂并不常见。在发展中国家，家庭规模的水处理技术，例如生物砂滤池（BSF）被用于改善饮用水质量。目前尚无关于BSF去除EDC的能力的研究。在该实验中，评估了BSF去除三种EDC（雌酮（El），雌三醇（E3）和17α-乙炔基雌二醇（EE2））的能力。将去除效果与文献中的慢沙滤池（SSF）进行了比较，该原理与BSF基本相似，但比较结果表明，去除了SSF和BSF之间其他水质参数的差异。通常，BSF很少从加标的湖水中去除化合物，因为所有三种化合物的去除率均低于15％，尽管质量去除率远高于使用SSF的其他研究。按照达到建议的BSF出水速率，将家用漂白剂添加到BSF废水中，以达到不同的Cl-浓度（0.67、2.0、5.0和10.0 mg / L），并检查随后通过氧化去除EDC的方法。当Cl-浓度大于5 mg / L时，所有化合物的浓度均降低> 98％。在0.67 mg / L Cl-浓度下，去除效率> 50％，而在2.0 mg / L Cl-浓度下，所有化合物的去除效率均接近70％。

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