水平潜流人工湿地有机物去除模型研究

以总有机碳(TOC)做为模型参数,建立了1个水平潜流人工湿地有机物去除机理模型.通过对试验数据的拟合得到模型中的未知参数,再对模型进行验证.结果表明,模型预测值与实测值的吻合较好.种植花叶芦竹的水平潜流人工湿地和空白湿地对生活污水中总有机碳的去除率分别为92%和91%,去除的主要途径为生物降解作用,生物降解量占进水总有机碳的84%.植物对总有机碳去除有促进作用,但影响不大.

Modelling organic matter removal in horizontal subsurface constructed wetland

A conceptional model for prediction of organic matter removal with TOC as the check index in horizontal subsurface constructed wetlands was developed. The values of the unknown parameters in the model were estimeted by fitting the conceptional model to one set of the experimental data. Then model was valided by another set of the experimental data. The predicted effluent concentrations were well close to the actual effluent concentrations. The removal rate of TOC for domestic sewage in the constructed wetland with Arundo donax var.versicolor and the controlled constructed wetland were 92% and 91%, respectively. The major organic matter removal process was biodegradation, contributing 84% of the TOC removal. Plant had a little impact to TOC removal.