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首页> 外文期刊>Water Environment Research >Mechanisms Of Manganese Removal From Wastewaters In Constructed Wetlandscomprising Water Hyacinth(eichhomia Crassipes (mart.) Solms)grown Under Different Nutrient Conditions
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Mechanisms Of Manganese Removal From Wastewaters In Constructed Wetlandscomprising Water Hyacinth(eichhomia Crassipes (mart.) Solms)grown Under Different Nutrient Conditions

机译：湿地湿润湿润风液中废水中的锰去除机制（Eichhomia Crassipes（Mart。）solms）在不同的营养条件下成长

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This article discusses key mechanisms involved in removing 1 mg/L Mn from synthetic wastewaters in constructed wetlands comprising water hyacinth (Eichhomia crassipes (Mart.) Solms) grown under different nutrient levels of 1-fold (28 mg/L and 7.7 mg/L of total nitrogen and total phosphorus, respectively), 2-fold, 1/4-fold, and 1/8-fold. A mass balance was carried out to evaluate the key removal mechanisms. Phytoremediation mainly due to phytoextraction substantially contributed to manganese removal. However, chemical precipitation was absent, suggesting that manganese has a higher solubility in the given average pH (6.2 to 7.1) conditions in constructed wetlands. Bacterial mediated immobilization mechanisms also did not contribute to manganese removal. Sediments constituted a minor sink to manganese, implying that manganese has a poor adsorption potential. Constructed wetlands comprising water hyacinth are effective at removing manganese from wastewaters despite the fact that the plants are grown under higher or lower nutrient conditions.
机译：本文讨论了在不同营养水平为1倍的不同营养水平（28 mg / L和7.7mg / L的不同营养水平下，从包含水葫芦（Eichhomia Crassipes（Mart.）SOLMS）的构造湿地中除去1mg / L MN的关键机制。总氮和总磷，分别为2倍，1/4倍，1/8倍。进行质量平衡以评估关键的去除机制。植物化主要是由于植物萃取物显着促使锰去除。然而，不存在化学沉淀，表明锰在构造的湿地的给定平均pH（6.2至7.1）条件下具有更高的溶解度。细菌介导的固定机制也没有促进锰去除。沉积物构成锰的次要水槽，暗示锰的吸附潜力差。包含水葫芦的构造湿地是有效地从废水中除去锰，尽管植物在更高或更低的营养条件下生长。

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