| Summary: | 碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 99 === In recent years, with the rapid industrial and commercial development and large concentration of population, making the water demand increasingly. Because of insufficient use of surface water, the type of seasonal rainfall, topography special, short steep rivers, water is not easy to grasp, resulting in a large number of dug wells. Due to the low cost of groundwater, water quality and quantity is more stable than the surface water, resulting in a large number of cut excessive pumping phenomenon. The nature replenishment slowly can not keep up Drilling wells, then water environment caused irreparable harm. Pay attention to illegal wells, investigation of wells difficulty and pumping groundwater will cause subsidence and salinization and water resources in coastal areas lead to soil salinization, and so the situation must immediately investigate and evaluate the necessity for sealing and fill wells.
In this study, the water quality is estimated by means of empirical method, measure method of water flow in wells and the electricity consumption method for each industries of pumping water to develop the land subsidence control program in different regions. At the same time, discuss the reduced and sunk amount of the water table to provide follow-up study of academic.
After the analysis of research that there is no inventory of the six districts of Tainan industrial wells. Compare the divergence of industry of quantity come from the Taiwan Water Corporation and emissions of water of Environmental Protection Agency of Tainan City Government, there were kind of three industry the more emissions of water than quantity we found: Community sewage systems, buildings,and the industry of non-industrial areas. Than we remove the possibility of pumping well of the first two after researching,but suspected of pumping wells of 8 industry include the Dyeing, electroplating, and department stores,while it need the water large quantity and no reason to prove the different of quantity.
The result for investigating the wells in agriculture that as follows: there is 7 wells and estimated amount of water is 7,900 tons/year in Eastern District; 159 wells and estimated amount of water is 172,300 tons/year in Southern District; 33 wells and estimated amount of water is 62,100 tons/year in Annan District, then there is no well in North Distric and Central Western District, Anping District.
Assess the necessity for wells sealing and fill through the environmental score factor. The six Distric of Tainan are part of control area of groundwater, although the government initiate powerfully, the populace`s recognition of degrees is low still. Therefore, assessment of sealing and fill operations must increase knowledge of well of people and develop the better management strategy of well.
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