抚顺西露天矿绿色泥岩改良生态沟渠基质降碳除磷研究

Study on Carbon and Phosphorus Removal of Ecological Ditch Matrix Improved by Green Mudstone in West Open Pit Mine of Fushun

为了改进生态沟渠处理污水的除磷效果,文章以不同含量抚顺西露天矿绿色泥岩为生态沟渠土壤改良基质,搭建反应器。模拟农村面源污水周期性进水,以COD、TP和TN等为检测指标,考察改良与未改良反应器对污水的处理效果。利用扫描电镜(SEM)、X射线荧光光谱分析(XRF)和X射线衍射仪(XRD)等方法对绿色泥岩进行表征。结果表明:当绿色泥岩添加量为9%时,改良后的反应器对COD、TP和TN的平均去除率分别为70%,83%和88%,比未改良的对照组分别提高了27%、21%和5%。表明以绿色泥岩为改良土壤基质显著提升了生态沟渠对TP和COD的除去效果。

In order to improve the phosphorus removal efficiency by ecological ditches,the green mudstone with different contents were selected as the soil improvement matrix of the ecological ditches in this paper,and a reactor was also set up.The comparative experiment was carried out between the improved reactor and the origin one.The wastewater treatment differences between them were investigated by simulating the periodic inflow of the rural non-point source sewage.COD,TP and TN were selected as the evaluation indicators.The green mudstone was characterized by SEM,XRF and XRD.The results showed that the average removal rates of COD,TP and TN in the improved reactor were 70%,83%and 88%respectively with the green mudstone content of 9%.The removal rates increased by 27%,21%and 5%than that in the unimproved group.The results indicated that the removal effect of TP and COD in ecological ditch was effectively improved by using the green mudstone as the soil matrix.