模块化沉床对城市富营养化水体中TN去除率研究

模块化沉床结构主要包括床体、基质、植物三部分,这些作为人为可控因素对污染水体中TN的去除有着密切的关系。文章通过正交试验和数量化理论分析方法,分析显示自变量对因变量的影响均极显著,并得出沉床最佳组合形式为A2B2C2D3,即:水位是0.50m;陶粒床体;页岩基质;植物为狐尾藻、黄花鸢尾和旱伞草的混合型水生植物组合,它对TN、的去除率可达79%,其可靠性为95%。经正交表L9(34)完全试验中81种组合形式的工程平均估计和数量化方程的预测,这两种统计方法所得结果是吻合的,其结果可作为实施污染水体生态修复时的参考。

Effect of Mattress Blocking on Ecological Remediation of Urban Wastewater

Submerged modular bed consists of bed physical,substrate and plants,which is closely related with TN removal as artificial controllable factors.Orthogonal comparison and quantitative analysis indicated that the effect of independent variable to the variable is highly significant.The best conditions of removal is that the water level of 0.5m,figuline granule bed,shale substrate,hybrid aquatic plants including fox brush alga,yellow flower fleur-de-lis and xero-grass regarded as vanguard vegetation in submerged bed,with TN removal of 79% and reliability of 95%.