Dissolved oxygen removal system of well water and dissolved oxygen removal method

摘要

PROBLEM TO BE SOLVED: To provide a dissolved oxygen removal system and a dissolved oxygen removal method for well water which can prevent blocking of a structure in the well or in an aquifer due to dissolved oxygen of the well water.SOLUTION: A dissolved oxygen removal system 1A comprises: a well 2 having well water W and being flooded or pumped; a deaeration pipe 3 that one end 31 is inserted in the well 2; and a vacuum pump 4 connected to another end 32 of the deaeration pipe 3 and raising the well water W from the one end 31 into the deaeration pipe 3 to an appointed height h. When the vacuum pump 4 is operated, the well water W is raised from the one end 31 of the deaeration pipe 3 into the deaeration pipe 3, and the surface of the water in the deaeration pipe 3 stops at a height h equivalent to a head pressure depending on degree of decompression. the dissolved oxygen of the well water W is deaerated from the well water W with decompression.SELECTED DRAWING: Figure 2