污水土地处理系统中土壤性质随时间变化研究  

Time-dependent Soil Property Change in Wastewater Land Treatment System

作　　者：孟凡丽 杨星宇 

机构地区：[1]贵州省环境科学研究设计院,贵州贵阳550081 [2]贵州省水污染控制与资源化技术研究重点实验室,贵州贵阳550081 [3]贵州省环境工程评估中心,贵州贵阳550002

出　　处：《环境科学与管理》2013年第2期39-41,共3页Environmental Science and Management

基　　金：贵州省科技厅基金项目(黔基合计字[2002]3076号);贵州省环境科学研究设计院院长基金项目

摘　　要：土壤性质对污水处理系统污水处理率起到重要的作用。自2002年至今,贵州省采用污水土地处理技术的污水处理工程有21个,本研究选择1-8年不同服务年限污水处理系统进行采样、分析,通过分析不同服务年限污水处理系统中土壤性质变化,并与本底值进行对比,分析结果表明:在污水土地处理工程有效服务年限范围内,随污水处理系统服务年限的增加,污水土地处理工程土壤的有机质、交换钙、孔隙度呈上升趋势,而交换镁、容重、pH变化不明显。Soil properties influence the wastewater treatment efficiency significantly in wastewater treatment systems. Overall 21 sewage treatment plants adopted wastewater soil treatment system since 2002. This study selected the sewage treatment systems with service period from one to eight years as research objects. The variations of soil property in wastewater treatment system were analyzed and were compared with the baseline value. These studies were carried out within the validity period. The results show that organic matter, exchangeable calcium and porosity of soil in wastewater treatment systems showed a rising trend with the in- crease in service life. However, exchangeable magnesium, weight and pI-I remained relatively stable.

关 键 词：污水 土地处理系统 土壤性质 

分 类 号：X703.1[环境科学与工程—环境工程]