Groundwater Quality Evaluation And Adsorption Of Fluoride Study In Tian Jin

As important water source ,the groundwater is approximately composes 1/3 of the water supply in Tianjin . With the natural condition restriction and the humanity activity, Groundwater quality condition is not well. Therefore, It's necessity to investigate and study the ground water quality, and determine what's the reasonable evaluation method, and research distributed rule of main influence component about ground water quality .According to chemical examination result of shallow groundwater and second confined water in October, 2001. Many kinds evaluation methods used.The results are that, the conventional component and the micro component as well as fluoride, manganese, iron exceed is main reason of bad.quality of groundwater. Fuzzy mathematics method is more superior. The groundwater.quality main rank is from I to III.With the examination result, mainly exceeds component distribution rule shows that : TDS and in the chloride ion spatial distribution presents the good relevance. The fluoride ion, TDS and the chloride ion spatial distribution have the certain relevance with groundwater flow. In the ammonium root ion separated the degree in shallow groundwater is different in-depth groundwater . The sulfate radical ion shows hight in south and low in north is possible relate with the ground water flows and the mainland salty function. The iron and the manganese are primary component in the groundwater,and are not main component. affects the water quality.Fluoride exceeds the allowed figure in groundwater in Tianjin majority areas.The traditional viewpoints thought drinks water of high fluoride is main reason of the fluoride disease. But the way is exist that fluoride enters the human body by the grain crops in the nature.Therefore research of soil fluoride behavior has the practical significance. This article through the fluoride adsorption experiment, initially discusses the fluoride adsorption behavior, determined fluoride adsorption dynamics modeland the uniform temperature adsorption model conforms to Tianjin,and studies migration rule of the fluoride among groundwater ,soil and biology, makes the preliminary attempt for deal fluoride disease. for further.