造纸废水滩涂芦苇湿地处理系统中钠的分布特征

Distribution Characteristics of Sodium Ion in the Reed Wetland Irrigating Pulping and Papermaking Effluent

通过现场采样和桶栽芦苇实验 ,分析了造纸废水、土壤、芦苇组织中的Na+ 分布特征。结果表明 ,造纸废水滩涂芦苇湿地生态处理过程中 ,土壤中的Na+ 含量呈下降趋势 ,而芦苇对Na+ 的吸收随灌溉废水浓度的提高而呈上升趋势 ,且其吸收量仅为造纸废水对生态系统贡献量的 1 . 3 %左右 ,其他大部分的Na+ 均随水下渗到下层土壤。用造纸废水灌溉滩涂芦苇湿地 ,对盐碱性土壤有洗盐的作用 ,对芦苇的生长有促进作用。

A survey of the content of sodium ion in the soils and reeds irrigating with pulping and papermaking effluent was conducted.Results showed that the content of sodium ion in the soils reduced after irrigating and the reeds adsorbed only about 1.3 percent of sodium ion of the effluent,most of the sodium ion penetrated through soil to groundwater.It could wash salts in seashore wetland soil and promote reed growth with pulping and papermaking effluent irrigation.