西北村镇集雨饮用水源地水质评价体系研究

Evaluation system of water quality for source rainwater in villeages and towns of Northwestern China

由于工农业的快速发展和水资源的不合理开发利用,西北村镇目前存在诸多水资源短缺与水环境质量问题。以庆阳市西峰地区作为示范区,本课题选用土路面、学校砖地面、庭院砖地面、油毡屋面、瓦屋面及沥青路面为集雨饮用水源地,通过研究西北村镇集雨水源地水质评价体系,评价确定出了示范区集雨水环境的污染程度与特征。结果表明:示范区集雨饮用水源地水质以高有机负荷、高浊度为特征;达到地表水环境质量标准Ⅲ类要求的集雨饮用水源地为油毡屋面和瓦屋面;评价结果符合示范区集雨饮用水源地实际情况,结果客观、切实,能为该地区水资源规划、利用、开发和环境系统优化提供更为客观的参考依据。

The speedy development of industry and agriculture irrational utilization of water resources in Xi Feng in Qing Yang city, resulted in a good many problems of water environment. Taking Xifeng as a showing spot, soil pavement, school brick flooring, brick courtyard ground, fehed roof, tile roof and asphalt pavement were selected as source rainwater, the degree and the characteristics of pollution were identified by studying water quality evaluation system of the rainwater harvesting in northwest China. The results showed that ： the water quality was characterized by high organic load and turbidity. The fehed roof and tile roof met the requirements of category three of environmental quality standard. Meanwhile, these analysis results can provide materials for improving and protecting the quality of rainwater in Xifen.