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。
Equipments of the water purification experiment were designed to simulate natural water environment. Water purification ability of the ecosystem consisted of Typhaorientalis Presl,Nelumbo Nucifera,and Margarya Melanoide was studied. The ecological adaptability of porous concrete and the whole water purification ability of porous concrete and the ecosystem were analyzed. The results showed that the maximum removal rates of TP,TN,and COD were 83. 93%,85. 88%,and 86. 66%,respectively,in the ecosystem formed by aquatic plants and animals. While combining with porous concrete,the maximum removal rate of TP,TN,and COD raised to 87. 5%,88. 89%,and 86. 7%,respectively. The comprehensive water quality purification mechanisms analysis of porous concrete showed that the pore structure of porous concrete could provide attached growth space for aquatic organisms and remove pollutants by physical absorption,plants absorption,microbial biochemical degradation and aquatic animal filter feeding and improve the water purification efficiency. It was suggested that the porous concrete may be combined with aquatic plants and animals to construct ecological slope protection.
出处
《环境工程》
CAS
CSCD
北大核心
2017年第11期33-36,81,共5页
Environmental Engineering
关键词
水质净化
综合效应
多孔混凝土
水生植物
water purification
comprehensive effect
porous concrete
aquatic plants
