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    • 9. 发明授权
    • Apparatus and method for aeration of wastewater
    • 废水曝气装置及方法
    • US07005069B2
    • 2006-02-28
    • US10832883
    • 2004-04-27
    • Gerald L. Shell
    • Gerald L. Shell
    • C02F3/00
    • C02F3/20B01F3/04113B01F2003/0028B01F2003/04148B01F2003/04319B01F2003/04361B01F2003/04879C02F3/26Y02W10/15
    • A wastewater treatment plant includes (i) an aeration vessel having a bottom portion, a top portion and a side portion disposed therebetween to hold a quantity of wastewater, the top portion and the bottom portion being disposed at least 20 feet apart from one and the other to define a depth, the depth being capable of being substantially filled with wastewater; (ii) a coarse bubble diffuser disposed proximal to the bottom portion, the diffuser having a plurality of orifices orientated horizontally toward the side portion; the orifices having a diameter of at least 0.125 inches; and (iii) a source of enriched oxygen gas in fluid communication with the diffuser; wherein the enriched oxygen gas exiting the orifices prevents settling of solid components of the wastewater without the use of a mechanical mixer. Further, the depth of the aeration vessel may be at least about 20 feet or deeper, for instance at least about 30 feet or deeper. A method for treating wastewater includes the steps of (i) providing a first deep and enclosed aeration vessel; the vessel having a depth of at least about 20 feet; (ii) providing wastewater having dissolved solids to substantially fill the vessel; and (iii) providing enriched oxygen gas at the bottom of the vessel through a coarse bubble diffuser at a sufficient flow to prevent settling of the solids without then need for a mechanical mixer.
    • 废水处理设备包括:(i)具有底部,顶部和设置在其间的侧部的充气容器,用于容纳一定量的废水,顶部和底部设置在距离一个和 另一个定义深度,深度能够基本上充满废水; (ii)设置在所述底部附近的粗气泡扩散器,所述扩散器具有朝向所述侧部水平定向的多个孔; 所述孔口具有至少0.125英寸的直径; 和(iii)与扩散器流体连通的富氧气体源; 其中离开孔口的富氧气体防止废水固体组分的沉降,而不使用机械混合器。 此外,曝气容器的深度可以至少约20英尺或更深,例如至少约30英尺或更深。 处理废水的方法包括以下步骤:(i)提供第一深度和封闭的曝气容器; 该船只具有至少约20英尺的深度; (ii)提供具有溶解固体的废水以基本上填充容器; 和(iii)通过粗气泡扩散器以足够的流量在容器的底部提供富氧气体,以防止固体的沉降,而不需要机械混合器。