河南省平原地区浅层地下水总硬度的分布及演化趋势

针对河南省平原地区浅层地下水总硬度总体呈升高趋势的现状,分析其原因,结果表明,地表污水的渗入、工业废渣和城市生活垃圾的随意堆放、农药化肥的大量使用、地下水开采引起的含水层水动力条件改变,是河南省平原地区浅层地下水总硬度升高的主要原因。为防止地下水硬度进一步升高,建议采取进一步推进产业结构战略性调整,加强重点行业管理与水污染源治理;优化农业产业结构,研究和推广农业面源污染防治技术;加强地下水资源的统一规划和管理,分区限量开采地下水等措施。

Distribution and evolution trend of total hardness of shallow groundwater in plain area of Henan Province

The total hardness of shallow groundwater in the plain area of Henan Province is currently rising. Analysis shows that the main reasons for the rising total hardness of the groundwater are the infiltration of polluted surface water, the dumping of industrial solid waste and urban daily solid waste, the substantial utilization of farm pesticide and fertilizer, and the changing of hydrodynamic conditions due to extraction of groundwater. To avoid a further rise in the total hardness of shallow groundwater, it is suggested that the following measures be adopted： strategic adjustment of the industrial structure, tightening up of the management of major industrial pollution control, developing new technology for controlling non-point agricultural pollution, enhancing the unified plan and management of groundwater resources, and restricting the extraction of groundwater.