化感植物-填料浮床装置的设计与应用

将传统浮床与水生植物的化感作用相结合,并配合生物填料,设计了化感植物-填料浮床装置。该浮床装置中的植物选择了香菇草,浮床填料分别选择了砾石、麦饭石、果壳、活性氧化铝、聚氨酯。该装置的应用结果表明:1香菇草种植水对于铜绿微囊藻的生长具有良好的化感抑制效果;2除果壳填料外,4种填料都能显著改善试验水质,有效降低水体中的Chl-a质量浓度;3化感植物-填料浮床装置能有效降低富营养化水体中的CODMn、TN、TP质量浓度和浊度等理化指标,并使水体中的DO显著升高,消除水体黑臭。

Design and application of allelopathic plant-filler floating bed

An allelopathic plant-filler floating bed was developed through the integration of the allelopathy of aquatic plants and conventional floating beds and by the use of biological fillers. Hydrocotyle vulgaris was chosen as the experimental plant, and gravel, maifanite, shell, activated alumina, and polyurethane were chosen as the fillers of the floating bed. The experimental results are as follows: (1)The planting water of Hydrocotyle vulgaris can effectively inhibit the growth of Microcystis aeruginosa. (2)Except for the shell, the other four fillers can significantly improve the water quality and effectively reduce the concentration of chlorophyll a. (3)The allelopathic plant-filler floating bed can effectively reduce the concentrations of COD_Mn, TN, TP, and the turbidity in eutrophic water, increase the dissolved oxygen in the water, and remove the odor.