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为了研究植物生态浮床在喀斯特水体环境中富营养物质的去除效果及生态浮床中植物的选取组合,将富贵竹和鸢尾通过单一、组合形式构建生态浮床,模拟喀斯特环境水体进行生态修复实验。结果表明,富贵竹、鸢尾、富贵竹+鸢尾不同的植物组合生态浮床对COD、TN、NH~+_4-N、NO~-_3-N、TP都有较好的去除效果,去除率依次为61.63%、44.38%、94.01%、13.35%、76.48%;28.33%、51.18%、88.11%、26.29%、55.25%;33.97%、49.56%、89.73%、22.25%、49.81%。鸢尾对TN、NO~-_3-N的去除率最好,富贵竹对NH~+_4-N、TP的去除中效果最佳,富贵竹+鸢尾组合处于中间状态,可见植物组合会使去除效果产生协同效应。通过实验组植物的生长状况和去除能力分析,单一植物组比混合组去除能力更强,但考虑综合去除效果还需要应用组合型生态浮床。
In order to study the eutrophication removal effect of plant ecological floating bed in the karst water environment and the selection and combination of plants in the ecological floating bed, the ecological floating bed was simulated by the single and combination forms of the Euonymus japonicus and Iris, and the ecological restoration experiments were simulated. The results showed that the different floating ecological beds of Phyllostachys praecox, Iris rhynchophylla, Phyllostachys praecox / Iris rhynchophylla had better removal effects on COD, TN, NH 4 + -N, NO 3-N and TP, the removal rates were 61.63%, 44.38%, 94.01%, 13.35%, 76.48%; 28.33%, 51.18%, 88.11%, 26.29%, 55.25%, 33.97%, 49.56%, 89.73%, 22.25%, 49.81% respectively. The iris had the best removal rate of TN and NO ~ -_3-N, the best effect was obtained when the bamboo was rich in bamboo, while the combination of Phyllostachys praecium + Iris was in the intermediate state. Produce synergies. According to the analysis of plant growth status and removal ability in the experimental group, the single plant group is more capable of removing than the mixed plant group. However, in consideration of the comprehensive removal effect, the combined type ecological floating bed is also required.