| abstract |
The invention relates to an internal oxygen supply hollow breathable composite membrane tube and a preparation method thereof, belonging to the technical field of sewage treatment. The inner oxygen supply hollow breathable composite membrane tube comprises: a breathable membrane tube and a fiber layer covering the outer surface of the breathable membrane tube, the breathable membrane tube is made of non-biodegradable material, and is provided with uniform micropores, The pore size of the micropores is 0.01-30 μm; the fiber layer is made of at least one of polyester resin and high-density polyethylene, the thickness of the fiber layer is 0.1-2.6 mm, and the fiber layer has a pore structure. The biofilm reactor assembled by the internal oxygen supply hollow gas permeable composite membrane tube organically combines the advantages of the aeration system of the traditional activated sludge method and the biofilm method, and at the same time realizes efficient oxygen transfer and biofilm attachment. function, with high processing efficiency. |