| 摘要 |
<p>PROBLEM TO BE SOLVED: To timely add a cleaning promoting agent without lowering the cleaning function of microbes by detecting the amount of contaminated liquid and adding the purification promoting agent in the case that most of the contaminated liquid is discharged out and that contaminated liquid or clean liquid is newly added after that are detected. SOLUTION: An apparatus main body 18 in a circulating and cleaning apparatus for bath water comprises a circulation pump to circulate bath water, a cleaning part, and a heating tank, etc. The purifying part is constituted of a biological cleaning tank to purify bath water by adsorbing and decomposing organic substances in the bath water by microbes and a physical filtration tack to capture and filter contaminants in the bath water which comes out the biological cleaning tank. Further the purifying part is provided with an adding means 50 to add a cleaning promoting agent to promote propagation of microbe and the means 50 is so controlled and driven as to add the purification promoting agent when a means 40 to detect the amount of the contaminated liquid in a storage tank detects that most or all of the contaminated liquid comes out of the storage tank and that contaminated liquid or clean liquid is newly added after that.</p> |
