湿地土壤对苯酚的净化能力及其影响因素研究

Study on Purification Ability of Wetland Soil and Influence Factor of Phenol

用动态土柱法和静态降解法研究了芦苇湿地土壤对苯酚的净化效果及其影响因素。结果表明,未生长芦苇的湿地土壤对苯酚具有较好的净化效果;苯酚在土壤中滞留时间、土壤的粒径范围均影响湿地土壤对苯酚的吸附能力;芦苇能改变土壤入渗率和根际土壤的理化性质,从而影响湿地土壤对苯酚的吸附能力。

Through experiments of static degradation and dynamic soil column, both purification efficiency of phenol and influences of reed wetland soil were studied. The results indicate that： Purification efficiency of phenol was better of wetland soil in which was not reed-planted; Both the residence time of phenol in soil and the range of particle size affected the adsorption ability of wetland soil; Through changing soil infiltration and physicochemical properties of rhizosphere, reed can affect adsorption ability of wetland soil on phenol.