Self-purification superhydrophobic-highly-oleophylic compound filter ball and preparing method thereof

Abstract

The invention discloses a self-purification superhydrophobic-highly-oleophylic compound filter ball and a preparing method thereof. A silicon resin compound layer covers ceramsite, organic-silicon resin particles accumulate to form the silicon resin compound layer, and nano-titania particles are attached to the surfaces of the organic-silicon resin particles. After the ceramsite is subjected to ball milling, the ceramsite is washed with a NaOH solution and dried, soaked in a mixed solution of methyl silicon prepolymer resin, ethyl alcohol and nano-titania, and then soaked in ammonium hydroxide; the ceramsite is soaked in a silane coupling agent, put in a high-pressure reaction kettle for 6 hours of heat preservation at 60 DEG C and 12 hours of heat preservation at 80 DEG C, and after absolute ethyl alcohol is added, heat preservation continues to be conducted at 260 DEG C. According to the self-purification superhydrophobic-highly-oleophylic compound filter ball and the preparing method thereof, polarity macromolecules in water can be quickly absorbed and conveyed inwards; since the outer layer of the filter ball has superhydrophobicity, water molecules cannot penetrate through theouter layer to enter the core ceramsite, the dryness of the ceramsite is kept, the situation that the adsorptivity of the ceramsite on polarity macromolecule pollutants is lowered after the ceramsiteabsorbs water is avoided, and thus the oil absorption and storage capacity of the compound filter ball is improved.

Description

technical field [0001] The invention relates to a self-purifying superhydrophobic-extremely lipophilic composite filter bead and a preparation method of the self-purifying superhydrophobic-extremely lipophilic composite filter bead, belonging to the technical field of composite material forming. Background technique [0002] In recent years, with the rapid development of my country's social economy, the quality of water resources has continued to decline, and the water environment has continued to deteriorate. Industrial wastewater, agricultural wastewater, medical wastewater, and domestic wastewater are discharged into rivers, lakes, and oceans without treatment or incomplete treatment, and the wastewater has many types of pollution, complex components, and poor biochemical properties. These sewages contain a large amount of protein, sugar, grease, urea and various parasitic bacteria, viruses, etc. A large number of such polar macromolecular pollutants are suspended in the ...

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Problems solved by technology

[0003] Artificial cleaning particles are currently widely used filter materials in sewage treatment plants and secondary water purifiers. The materials are mainly quartz sand filter materials, anthracite filter materials, polyaluminum chloride, activated carbon, honeycomb inclined tube fillers, fiber ball filters materials, garnet sand, etc. These materials all have certain adsorption properties, but they all have the disadvantages that the surface is hydrophilic, the adsorption capacity of the material to polar macromolecules is weak after absorbing water, and the material is difficult to regenerate after the material is saturated. Disposal of waste filter materials by landfill and other methods will also cause secondary pollution

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