High-efficiency suspended filler and preparation method thereof

Abstract

The invention discloses a high-efficiency suspended filler and a preparation method thereof. The high-efficiency suspended filler comprises hydrophilic non-woven cloth, wherein the hydrophilic non-woven cloth comprises a hydrophilic fiber layer and a repellent macromolecular polymer layer which are laminated together; the repellent macromolecular polymer layer is adhered to a rigid support. The preparation method comprises the following steps: melting a repellent macromolecular polymer and spraying out the repellent macromolecular polymer from a high-temperature melting shower nozzle to form fiber attached to the surface of the rigid support; spraying out hydrophilic fiber from a hydrophilic fiber shower nozzle and uniformly distributing the hydrophilic fiber on the surface of the repellent macromolecular polymer fiber; sizing the two kinds of fiber on the rigid support to form a cloth shape by a hot-pressing process, wherein a part of the repellent macromolecular polymer fiber and the rigid support are fused into supporting points; preparing the sheet-like filler into various required shapes by a cutting, sewing or hot-melting process. The high-efficiency suspended filler has the advantages of short film-forming time, long life and high cost performance.

Description

technical field [0001] The invention relates to a suspension filler for a biofilm method, in particular to a high-efficiency suspension filler and a preparation method thereof. Background technique [0002] Biofilm method is a general term for biological sewage treatment methods, including biofilter, biological turntable, biological contact, aerated biofilter and biological fluidized bed, etc. The common feature is that microorganisms adhere to and grow on the surface of the filler. [0003] The suspended filler forms a fixed biofilm, which has a good treatment effect. The filler filled in the biofilm reactor is the core part of the MBBR process technology. The suspended filler affects the growth, reproduction, detachment and morphology of microorganisms, and also affects the contact efficiency of gas, liquid and solid in the water body. Therefore, the biological contact oxidation method The operation effect and energy consumption of the process have very important influenc...

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Problems solved by technology

[0007] The defect of prior art 1 is: the surface of the material has many transparent holes, which is not conducive to suspension fluidization, and will cause the accumulation of reactor filler; the filler is soft and easy to deform, and is easy to lose from the grid; the hydrophilicity is poor, and the film-hanging time is long

[0010] The defects of the second prior art are: the filler is porous, fluidization requires a larger air volume, and the fluidization state is not good; the addition of inorganic components in the non-woven fabric is required, which increases the possibility of being destroyed by microorganisms; the material flexibility decreases, and the brittleness increase, easy to be damaged by external force

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