| 摘要 |
PURPOSE:To remove efficiently org. substances forming trihalomethane, etc. by adsorbing and removing most of water-soluble org. substances, odor, iron, manganese, etc. with activated carbon, adding chlorine, and then treating the water in iron-removing and manganese-removing equipment. CONSTITUTION:In a water purifying plant wherein an activated carbon filter basin is provided, chlorine is not added before the activated carbon filter basin, and chlorine is added, after most of water-soluble org.substances, odor, iron, manganese, and ammoniacal nitrogen are removed by adsorption and filtration with activated carbon. Iron-removing and manganese-removing equipment are provided, and the water is treated in the equipment. Consequently, org. substances forming trihalomethane, org. halogen compds., etc.-, can be removed efficiently and economically without deteriorating the efficiency in removing iron, manganese, ammoniacal nitrogen, turbidity, bacteria, etc. which are the objects to be removed in the present water purification. |
