| 摘要 |
PROBLEM TO BE SOLVED: To provide a circulation type flush toilet system for a disaster that is a small scale and low cost installable in a detached house, and easy in operation when a disaster occurs.SOLUTION: A circulation type flush toilet system for a disaster comprises a first waste water pipe and a second waste water pipe branching off from a waste water pipe and switching means for making waste water flow in any one of the first waste water pipe and the second waste water pipe. The first waste water pipe is connected to a sewer pipe, the second waste water pipe is connected to a purification treatment tank, the purification treatment tank and a rainwater storage tank are connected via a communication pipe, the rainwater storage tank and an overhead storage tank are connected via a pumping-up pipe, and the overhead storage tank and a wash water tank of a flush toilet are connected via a supply pipe. The waste water flowed in the second waste water pipe is purification-treated by the purification treatment tank, and a circulation passage is formed so that purification-treated treatment water can be reused as wash water. The waste water flows in the first waste water pipe in normal time, and the waste water flows in the second waste water pipe in disaster time. |
