Water Sciences and Engineering Technology 

Abstract: According to many years' groundwater monitoring data of Jinan City,using the multiple regression model to analyse the dynamic characteristics of karst groundwater in Jinan.The annual dynamic characteristics of groundwater level presented obvious seasonal.With the time elapse,the influence of rainfall on the ground water level decreased gradually and the groundwater exploitation gradually increased.The time series analysis method was used to separate trend term,periodic term and randomentry of ground water series,and established the prediction model of groundwater level,the calculated results was consistent with actual situation.Providing the scientific basis to rational use of the karst water,springs protection and groundwater monitoring management.

Abstract: The well reservoir dam safety monitoring is an important measure to ensure the safe operation of dam reservoir,By describing the basic features of plain reservoir,summed up several aspects of problems and the principles of project setting the plain reservoir dam safety monitoring should pay attention to.Discusses the composition and principle of automatic monitoring system in plain reservoir.

Abstract: On the base of expatiation the background of hydrogeology in hengshui area, the article explains the chemical character of the shallow water by Piper 3 chart according to the data of samples, contrasts the changes of TDS in the years and makes the correlation analysis and linear regression analysis about TDS and its main ion relations, reaches conclusions that although the types of water chemistry and it's causes are complex in the research area but the unconfined salt groundwater are obvious diluting because of factors such as precipitation and mining effects in recent years; then the article discusses the cause mechanism and considers that the shallow salt groundwater is the results of superposition making by mainland salinization and seawater intrusion. The article makes a view on the development and technic of utilizing shallow groundwater and considers that there has a wide prospect, and it has important practical significance.

Abstract: As a effective advanced treatment technology,ozone oxidization method is good effects on many refractory organic wastewater.This article introduced character of ozone and mechanism of ozonization.The appliance of refractory organic wastewater,such as dyeing wastewater,papermaking wastewater,landfill leachate,wastewater of fossil fuels,coking wastewater,was analyzed on oxidization.And existing problems of ozone oxidization were pointed out.