多孔混凝土与水生植物综合水质净化效应的试验研究

发布时间：2019-03-20 10:59

【摘要】：通过自行设计室内水质净化装置模拟自然水环境,研究水生植物香蒲、荷花和水生动物螺蛳组成的生态系统对水质的净化能力,以及多孔混凝土与该生态系统相结合时整体的水质净化能力和多孔混凝土的生态适应性。试验结果表明,水生生物形成的生态系统对水体中TP、TN、COD的最大去除率分别为85.71%、85.88%、86.66%,与多孔混凝土联合应用后,对TP、TN、COD的去除率分别达到87.50%、88.89%、86.70%,多孔混凝土的应用为水生生物的生长繁殖提供了空间,一定程度上提高了水生植物的水质净化效率。对多孔混凝土综合水质净化效应机理分析表明,多孔混凝土的孔隙结构可为水体生物提供附着生长的空间,通过物理吸附作用、植物吸收作用、微生物生化降解和水生动物滤食作用去除水体中的污染物。提出多孔混凝土可作为生态护坡材料,与水生植物、水生动物结合应用于生态护坡。
[Abstract]:An indoor water purification device was designed to simulate the natural water environment, and the water purification ability of the ecosystem composed of cattail, lotus and aquatic animal snail was studied. When the porous concrete is combined with the ecosystem, the whole water purification ability and the ecological adaptability of the porous concrete are discussed. The results showed that the maximum removal rate of TP,TN,COD in the aquatic ecosystem was 85.71%, 85.88% and 86.66%, respectively. When combined with porous concrete, the TP,TN, was removed by the combination of the ecosystem and porous concrete, and the maximum removal rate was 85.71%, 85.88% and 86.66% respectively. The removal rates of COD were 87.50%, 88.89% and 86.70%, respectively. The application of porous concrete provided space for the growth and reproduction of aquatic organisms and improved the water purification efficiency of aquatic plants to a certain extent. The mechanism of comprehensive water purification effect of porous concrete is analyzed. It is shown that the pore structure of porous concrete can provide the space for aquatic organisms to attach and grow, and through physical adsorption and plant absorption, the pore structure of porous concrete can provide the space for biological growth. Biodegradation of microorganisms and filtration of aquatic animals to remove pollutants in water. It is suggested that porous concrete can be used as ecological slope protection material combined with aquatic plants and aquatic animals for ecological slope protection.
【作者单位】：沈阳农业大学水利学院;
【分类号】：X173;X52

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