| 摘要 |
PURPOSE:To accurately calculate the consumption amount of chlorine, by providing an operation means for operating the concn. of chlorine including the concn. of residual chlorine after injection of chlorine. CONSTITUTION:Raw water taken in from an intake source is flowed into a water arrival basin 2 from a pipeline A equipped with a flowmeter 1 and subsequently passes through a pipeline B, in which chlorine is injected, to be flowed into a rapid mixing basin 3. After the stirring an mixing in the rapid mixing basin 3, a part of water to be inspected is guided by an intake pump 4 to be sent to a residual chlorine densitomater 5 from a water conduit D and chloline inpected in the pipeline B is guided as chlorine water by a chemicals injection pipe E equipped with a chemicals injection valve 6 and a chemicals flowmeter 7. Respective signals of the flowmeter 1, the chemicals flow meter 7 and the residual chlorine densitometer 5, a raw water flow amount Q, a chlorine water flow amount QC, the measured value RC of the concn. of residual chlorine are inputted to a chlorine injection control apparatus 8 to be operated. |
