典型感潮河流水质采样预处理方式研究

Study on Pretreatment Methods of Water Quality Sampling of typical tidal river

指出了为掌握地表水环境质量状况,全国各级环境监测站每月开展所辖地区地表水环境质量监测。常规监测时含泥沙河流采样需现场静置30min,然而对感潮河流来说,30min的沉降时间远达不到沉降性固体和悬浮性固体分离的目的。对感潮河流4种水样预处理方式进行了23种方案试验,从中寻找了一种更加快捷、不受现场条件限制的感潮河段地表水沉降性固体分离方法。

In order to master the quality of surface water environment, the national environmental monitoring stations at all levels carry out monthly monitoring of surface water environmental quality. Conventional monitoring of sedi ment laden river sampling requires 30min＇ standing on site. However, for tidal rivers, 30min sedimentation time is far less than the purpose of settling solids and suspended solids separation. In this paper, 4 kinds of water sample pretreatment methods and 23 kinds of test schemes of tidal river were used to find a more rapid and non-settling method which is not restricted by field conditionsfor surface water sedimentation in tidal reach of river surface.