WATER TREATMENT SYSTEM AND WATER TREATMENT METHOD

To provide a water treatment system and a water treatment method capable of optimizing the injection rate of powdered activated carbon.MEANS FOR SOLVING THE PROBLEM: A water treatment system is equipped with a first coagulant injection rate calculation unit and an activated carbon injection rate calculation unit. The first flocculant injection rate calculation unit calculates, based on the quality of the raw water, the first flocculant injection rate, which is the injection rate of flocculant required for flocculation and sedimentation of suspended matter in the raw water. The activated carbon injection rate calculation unit calculates the first powdered activated carbon injection rate, which is the injection rate of powdered activated carbon required to remove odorous substances from raw water, based on: the concentration of odorous substances contained in raw water; at least one of UV absorbance, fluorescence intensity and soluble organic carbon concentration of raw water; and the first flocculant injection rate.SELECTED DRAWING: Figure 1 【課題】 粉末活性炭の注入率の最適化を図ることができる水処理システムおよび水処理方法を提供すること。【課題手段】 実施形態によれば、水処理システムは、第１の凝集剤注入率算出部と、活性炭注入率算出部とを備えている。第１の凝集剤注入率算出部は、原水の水質に基づき、原水の濁質の凝集沈澱に必要な凝集剤の注入率である第１の凝集剤注入率を算出する。活性炭注入率算出部は、原水中の臭気物質濃度と、原水の紫外線吸光度、蛍光強度、および溶解性有機体炭素濃度のうちの少なくとも何れかならびに、第１の凝集剤注入率とに基づき、原水中の臭気物質の除去に必要な粉末活性炭の注入率である第１の粉末活性炭注入率を算出する。【選択図】図１