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不同种植密度的黑藻在城市河道中净化效果的模拟

Journal of Environmental Engineering Technology(2018)

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Abstract
在流速为1.74 cm∕s的较低动水条件下,设置3组黑藻种植密度,ρ1、ρ2和ρ3分别为0.9、1.9和3.0株∕dm2,模拟不同密度的黑藻对城市河道水质的净化效果.结果表明,与ρ1和ρ3组相比,ρ2组对NH3-N、CODCr和TP的净化均有优势,其平均去除率分别为87.79%、67.43%和82.48%;试验结束后,水质由原GB 3838—2002《地表水环境质量标准》地表Ⅴ类水质净化为Ⅲ类水质.说明在较低流速水环境中黑藻的种植密度以1.9株∕dm2的净化效果为佳.
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