GROUNDWATER RECHARGE SYSTEM

PROBLEM TO BE SOLVED: To provide a groundwater recharge system, in which water flow efficiency in the recharge system is maintained and clogging of ground near a water injection well may be prevented.SOLUTION: It comprises a drawn water well 1 for drawing groundwater W, an oxidation agent supplementation part 12 in which groundwater W drawn from the drawn water well 1 is supplied with oxidation agent Ox, a removal part 20 into which groundwater W supplied with the oxidation agent Ox is introduced and in which groundwater W is processed, a reducing agent supplementation part 14 in which the groundwater W processed in the removal part 20 is supplied with reducing agent Re at a level where remaining volume of the oxidation agent Ox in the groundwater W is reduced to a predetermined value or less, and a water injection well 2 for injection of the groundwater W supplied with the reducing agent Re to the ground.SELECTED DRAWING: Figure 1 【課題】リチャージシステムの通水性能を保持し、注水井戸付近の地盤の目詰まりを防止することができる地下水リチャージシステムを提供する。【解決手段】地下水Ｗを揚水するための揚水井戸１と、揚水井戸１から揚水された地下水Ｗに酸化剤Ｏｘを添加する酸化剤添加部１２と、酸化剤Ｏｘが添加された地下水Ｗを導入し、地下水Ｗを処理する除去部２０と、除去部２０で処理された地下水Ｗに地下水Ｗ中の酸化剤Ｏｘの残量が所定値以下になるまで還元剤Ｒｅを添加する還元剤添加部１４と、還元剤Ｒｅが添加された地下水Ｗを前記地盤内へ注水するための注水井戸２と、を備えている。【選択図】図１