| 摘要 |
PURPOSE:To treat concentration and other conditions of water to be treated, as the pre-stage of contact aeration treatment, to the state optimum to the following aeration treatment by introducing an acid additive containing various kinds of metal salts and non-metal salts as main components into the soil water to be treated, introducing a neutralizer and mixing it therein, and carrying out neutralization. CONSTITUTION:An acid additive containing various kinds of metal salts and non-metal salts prepared by dissolving a mineral containing various kinds of metal oxides and non-metal oxides including SiO2, Al2O3, Fe2O3, K2O and MgO as main components by an oxidation reaction tank 3 is mixed with soil water to be treated from which insoluble matters are removed by a solid-liquid separator 2. Flocculent matters are settled in a settling tank 5 and affected by microbe groups adhered to contact materials 18, 18... trimming the inside of a contact aeration tank 6 to carry out effective purification. The treatment for high concentration organic soil water, which cannot be carried out by the microbe treatment only, and the treatment of organic soil water having large load variation can be carried out with high efficiency in a small equipment by said process. |
