Study on Determining Fluoride Subtracting Background Value in part Surface Water Examination Section of Shangqiu City
In order to solve the problem that the fluoride of Tuohe river,Huihe river and Wangjian river in the east and southeast of Shangqiu city exceeds the Class Ⅲ standard limit value of Surface Water Environmental Quality Standard(GB 3838-2002)for a long time,according to the technical requirements,combined with the fluoride monitoring data of surface water and groundwater in Shangqiu city over the years and the results of regional geological survey.This paper analyzes the influence of regional environment background and pollution source on the fluoride exceeding the standard of the corresponding sections of Tuohe river,Huihe river and Wangyin river from the aspects of correlation analysis of geological geomorphology and fluoride exceeding the standard,pollution source discharge,fluoride concentration and man-made pollution source and the cause analysis of high fluoride.It is found out that the high natural background is the main reason of exceeding fluoride of Tuohe river,Huihe river and Wangyin river in the east and southeast of Shangqiu city.
surface water sectionfluoridebackground valuedecision study