a Química Analítica, Instituto de Química Aplicada del Litoral (IQAL, UNL-CONICET), Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) , Santiago del Estero , Santa Fe , Argentina.
b Universidad Tecnologica Nacional Facultad Regional Rafaela, GEM (Grupo de Estudios de Medio Ambiente) , Rafaela , Santa Fe , Argentina.
Int J Phytoremediation. 2018 Jul 29;20(9):895-900. doi: 10.1080/15226514.2018.1438361.
The aim of this work was to evaluate the efficiency of horizontal subsurface flow constructed wetlands (HSFCWs) planted with Typha domingensis and Phragmites australis in the final treatment of dairy wastewater. Ten microcosms-scale reactors simulating HSFCWs were arranged outdoors under a semi-transparent plastic roof. Five replicates were planted with T. domingensis and five with P. australis. In both cases, light expanded clay aggregate (LECA) 10/20 was used as a substrate. Real effluent with previous treatment was used. In order to evaluate contaminant removal efficiencies in each reactor, pH, electrical conductivity, suspended solids, ammonium, nitrate, nitrite, total phosphorus, and chemical oxygen demand (COD) were analyzed before and after treatment. HSFCWs planted with T. domingensis and P. australis were efficient for the final treatment of dairy wastewater. Removal efficiencies obtained in microcosms planted with both macrophytes were over 96% for ammonium and nitrite. Nitrate removal efficiency was 39%. COD decreased along the experiment near 75% for both treatments. High removal percentages for suspended solids (78.4-81.1%) were also achieved. However, systems planted with T. domingensis were significantly more efficient for total phosphorus removal (88.5%) than those planted with P. australis (71.6%).
本研究旨在评估种植香蒲和芦苇的水平潜流人工湿地（HSFCWs）在奶牛废水最终处理中的效率。十个模拟 HSFCWs 的微宇宙规模反应器在半透明塑料屋顶下户外布置。其中五个种植香蒲，五个种植芦苇。两种情况下均使用轻质膨胀粘土骨料（LECA）10/20 作为基质。使用经过预处理的实际废水。为了评估每个反应器中的污染物去除效率，在处理前后分析了 pH 值、电导率、悬浮固体、铵、硝酸盐、亚硝酸盐、总磷和化学需氧量（COD）。种植香蒲和芦苇的 HSFCWs 可有效用于奶牛废水的最终处理。在这两种植物的微宇宙中，铵和亚硝酸盐的去除效率均超过 96%。硝酸盐去除效率为 39%。COD 在实验过程中下降了近 75%，两种处理均如此。悬浮固体（78.4-81.1%）的去除率也很高。然而，种植香蒲的系统对总磷的去除（88.5%）明显优于种植芦苇的系统（71.6%）。
