MEMBRANE SUPPORTED BIOFILM APPARATUS AND PROCESS
    1.
    发明申请
    MEMBRANE SUPPORTED BIOFILM APPARATUS AND PROCESS 审中-公开
    膜支持生物薄膜设备和工艺

    公开(公告)号:WO2008130885A2

    公开(公告)日:2008-10-30

    申请号:PCT/US2008060195

    申请日:2008-04-14

    摘要: A membrane supported biofilm apparatus has a plurality of hollow fiber gas permeable membranes in a tank containing water to be treated. The membranes have an outside diameter of about 200 microns or less and occupy between 0.5% and 4% of the tank volume. A biofilm supported on the membranes occupies between about 40% and 80% of the volume of water to be treated in a reactor. The membranes may be oriented generally vertically and a spreader may be located near the bottom of the apparatus to disperse the membranes. Wastewater treatment processes are described. A process to dentrify water or treat oxidized contaminants comprises introducing hydrogen into an inner volume of the membranes to grow autotrophic organisms in the biofilm near the membrane and heterotrophic organism near the water. Another process is operated at a biomass concentration of at least 10 g/L and up to about 40 g/L to maintain a biofilm having a surface area of over 1000 square metres per cubic metre of tank volume. A hybrid process has suspended biomass and a membrane supported biofilm.

    摘要翻译: 膜支撑的生物膜装置在包含待处理水的罐中具有多个中空纤维气体可渗透膜。 膜具有约200微米或更小的外径,并占据罐体积的0.5%至4%。 支撑在膜上的生物膜占反应器中要处理的水体积的约40%至80%。 膜可以大致垂直取向,并且撒布机可以位于设备底部附近以分散膜。 描述了污水处理过程。 污染水或处理氧化污染物的过程包括将氢气引入膜的内部体积,以在靠近水体的膜和异养生物膜附近的生物膜中生长自养生物体。 另一种方法是以至少10g / L和高达约40g / L的生物质浓度进行操作,以维持表面积超过1000平方米/立方米罐体积的生物膜。 混合过程已经悬浮生物质和膜支持的生物膜。