CIRCULATING WATER UTILIZATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To enhance users' trust in water quality of circulating water that is water obtained by purifying discharged water when a new circulating water utilization system is considered.SOLUTION: A circulating water utilization system 1 constructed at a specific district as an object includes at least: a closed loop-like circulation flow passage 2 through which circulating water flows; a discharge flow passage 4 through which discharged water discharged from a water consumer unit 3 constituted of a plurality of individual water consumer units gathered is discharged to the circulation flow passage 2; purification means 8 for purifying the circulating water including the discharged water flowing through the circulation flow passage 2; a supply flow passage 6 through which the circulating water purified by the purification means 8 is supplied to the water consumer unit 3; a plurality of water intake sections 10 individually provided to each of the plurality of individual water consumer units for taking the circulating water from the supply flow passage 6; and a plurality of sterilization treatment means 11 individually provided to the plurality of water intake sections 10 for individually performing sterilization treatment of the circulating water supplied to each of the plurality of individual consumer units.