| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainwater supply apparatus capable of supplying high-concentration gas-dissolved water to a supply destination by producing rainwater with a high dissolved gas concentration. SOLUTION: The rainwater supply apparatus includes a rainwater storage tank 2 for storing the rainwater w1, and a gas dissolving device 3 for producing the high-concentration gas-dissolved water by dissolving the gas into the rainwater stored in the rainwater storage tank. The gas dissolving device comprises a dissolution tank for dissolving the gas into the rainwater supplied from the rainwater storage tank, and a pump which takes out the rainwater stored in the rainwater storage tank so as to supply the rainwater to the dissolution tank and discharges the high-concentration gas-dissolved water produced in the dissolution tank to the rainwater storage tank. In addition, the gas dissolving device also comprises a gas supply portion which communicates with the dissolution tank, and a takeout portion for taking out the high-concentration gas-dissolved water to the outside of the rainwater storage tank. COPYRIGHT: (C)2011,JPO&INPIT
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