| 摘要 |
When a raw water to be filtered c is fed from a raw water tank 11 reservoiring a raw water (water to be treated) to a membrane module by a raw water pump P 1 , an activated carbon raw material supplied from an activated carbon tank is milled together with water to be mixed by a wet milling device, and added and mixed into the raw water tank as an aqueous suspension containing activated carbon fine particles having an average particle size of 0.1 mum to 10 mum, thus producing the raw water to be filtered (activated carbon-containing water to be treated). The raw water to be filtered (activated carbon-containing water to be treated) is filtered by the membrane module at a subsequent step, thereby obtaining a purified water. |
