| 摘要 |
PCT No. PCT/DK96/00385 Sec. 371 Date May 4, 1998 Sec. 102(e) Date May 4, 1998 PCT Filed Sep. 12, 1996 PCT Pub. No. WO97/10038 PCT Pub. Date Mar. 20, 1997A clarifier for use in treating a liquid containing non-soluble particles in suspension in order to separate these particles from the liquid includes a tank, a liquid supply duct opening into the bottom portion of the tank and an injector for injecting a gas under pressure into at least part of liquid supplied to the supply duct in order to saturate this liquid with the gas and thus to generate gas bubbles as the saturated liquid is subject to depressurization within the tank. The gas bubbles that are so generated adhere to the particles in suspension in the liquid and lift them up to form a floating layer of sludge in the top portion of the tank. A scraper is provided in the top portion of the tank for skimming off the layer of sludge while it is formed. A plurality of plates extend at an angle within the tank above the supply duct. These plates define a set of upwardly inclined channels each having an upper end that is opened and through which the liquid fed into the tank may enter the channel. A liquid outlet mounted within the lower end of each channel to collect and remove from the tank the liquid that has been treated within the same. Due to its shape and structure, this clarifier occupies a surface area on the ground that 50% or less than any known clarifier of the same capacity. Its structure also permits more microbubbles of a desired size to be maintained for the same amount of injected air in order to increase the probability of contact between the particles and the air bubbles. |
