Gao Zongjun

The comprehensive disposal experiment of high-salinity geothermal tail water

Take the geothermal tail water treatment in Dongying of Shandong province as an example, we get various parameters through batch experiments and obtain dynamic changes of TDS ( Total Dissolved Solids), hardness, Chloride and Sodium ion in the experiments of dynamic continuous composite experiment, then gain the best treatment process. It is confirmed that it is feasible for the process to deal with high salinity, high hardness geothermal tail water, the treatment costs drop to 2.2¥/m3, Solving the problem of high costs of water treatment, the prospect of the development and utilization of Geothermal resources is increasingly broad.

The impact of forest cover degree of surface for runoff and geological environmental

The paper discusses the relationship of the forest cover rate and the quantity of surface flow of two typical basins in LuZhong mountain area in more than forty years. The result shows that : the increase of the forest cover rate, helps to the supply of precipitation to the ground water, and helps to slow down the drainage speed of the precipitation, reduce the flood peak flow in flood season in mountain areas, which could reduce the arises of debris flow disasters; At the same time add the output of ground water in dry season, which means add its dry season runoff. It concludes that the increase of one basins forest cover rate is helpful to the flood control of a reservoir in north area which has long dry season and concentrative precipitation time and helpful to water resources development and utilization. On the hand, the development of forest cover has significant effect to ground geohydrologic environment that the groundwater recharge from precipitation is increased.

The characteristics and influencing factors analysis for heavy metals in vegetables Qingdao district

Heavy metals can be absorbed from soils and atmospheric dust and accumulated by vegetables, and then ingested by human body through the food chains. They are very harmful to human health. Some statistic analysis experiments are executed by taking vegetables, soils from their roots and atmosphere dust in Qingdao district as research objects. First, this paper uses geochemistry method to analyze the heavy metals of vegetables. And then we adopt the Spearman related coefficient analysis method to analyze the relationships among the heavy metals in vegetables, soils from their roots and atmospheric dust. Analysis results show that rhizome vegetables have strongest capability in accumulating heavy metals from their soil. In contrast, fruit vegetables have weakest capability. Fruit vegetables, leaf vegetables and rhizome vegetables can cooperatively absorb heavy metals. Especially, rhizome vegetables do best. Besides, heavy metals in soils have promoting or inhibiting effect on fruit vegetables, leaf vegetables and rhizome vegetables. The heavy metals in atmosphere dust do not have obvious influence on leaf vegetables and rhizome vegetables, while have obvious influence on fruit vegetables. The results gotten from this paper can provide evidence to control city air pollution and to strengthen abatement of heavy metals pollution in soils.