A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polyurethane/ceramic composite biological filler for sewage treatment and preparation method
The invention provides a polyurethane/ceramic composite biological filler for sewage treatment and a preparation method. The preparation method comprises the following steps: mixing an anionic chain extender, isocyanate and polyethylene glycol, adding a triethylene diamine liquid catalyst, and carrying out reaction to prepare a polyurethane prepolymer; adding a proper amount of acetone, performingcooling, adding triethylamine and lactide, and performing stirring to obtain waterborne polyurethane; pre-treating municipal sludge, mixing pre-treated municipal sludge with natural magnesium aluminum silicate and aluminum oxide, carrying out dry ball milling, and performing treating to obtain ceramic with abundant porous structures; and placing the porous ceramic in a mixed solution of sodium alginate and absolute ethyl alcohol to be mixed, and then adding waterborne polyurethane, wherein the biocompatibility of the material can be enhanced through the waterborne polyurethane and the sodiumalginate. Therefore, the polyurethane/ceramic composite material prepared by the method integrates the advantages of high mechanical strength, large specific surface area and high porosity of the porous ceramic, and has the advantages of good biocompatibility, easiness in biofilm formation, high strength, easiness in backwashing and the like when being used as a biological filler.
本发明提出一种污水处理用聚氨酯/陶瓷复合生物填料及制备方法，将阴离子型扩链剂、异氰酸酯和聚乙二醇混合，加入三乙烯二胺液体催化剂反应制得聚氨酯预聚体；加入适量的丙酮，然后降温，加入三乙胺和丙交酯搅拌，制得具有水性的聚氨酯；将城市污泥经预处理后与天然硅酸镁铝、氧化铝混合，干球磨后进行处理得到丰富多孔结构的陶瓷；将多孔陶瓷置于海藻酸钠和无水乙醇的混合液中混合，再加入水性聚氨酯，水性聚氨酯与海藻酸钠能够增强材料的生物亲和性。从而，本发明制得的聚氨酯/陶瓷复合材料综合了多孔陶瓷机械强度高和比表面积大、孔隙率高的优势，用作生物填料具有生物亲和性好，挂膜容易，强度高，反冲洗容易等优越性能。
Polyurethane/ceramic composite biological filler for sewage treatment and preparation method
The invention provides a polyurethane/ceramic composite biological filler for sewage treatment and a preparation method. The preparation method comprises the following steps: mixing an anionic chain extender, isocyanate and polyethylene glycol, adding a triethylene diamine liquid catalyst, and carrying out reaction to prepare a polyurethane prepolymer; adding a proper amount of acetone, performingcooling, adding triethylamine and lactide, and performing stirring to obtain waterborne polyurethane; pre-treating municipal sludge, mixing pre-treated municipal sludge with natural magnesium aluminum silicate and aluminum oxide, carrying out dry ball milling, and performing treating to obtain ceramic with abundant porous structures; and placing the porous ceramic in a mixed solution of sodium alginate and absolute ethyl alcohol to be mixed, and then adding waterborne polyurethane, wherein the biocompatibility of the material can be enhanced through the waterborne polyurethane and the sodiumalginate. Therefore, the polyurethane/ceramic composite material prepared by the method integrates the advantages of high mechanical strength, large specific surface area and high porosity of the porous ceramic, and has the advantages of good biocompatibility, easiness in biofilm formation, high strength, easiness in backwashing and the like when being used as a biological filler.
本发明提出一种污水处理用聚氨酯/陶瓷复合生物填料及制备方法，将阴离子型扩链剂、异氰酸酯和聚乙二醇混合，加入三乙烯二胺液体催化剂反应制得聚氨酯预聚体；加入适量的丙酮，然后降温，加入三乙胺和丙交酯搅拌，制得具有水性的聚氨酯；将城市污泥经预处理后与天然硅酸镁铝、氧化铝混合，干球磨后进行处理得到丰富多孔结构的陶瓷；将多孔陶瓷置于海藻酸钠和无水乙醇的混合液中混合，再加入水性聚氨酯，水性聚氨酯与海藻酸钠能够增强材料的生物亲和性。从而，本发明制得的聚氨酯/陶瓷复合材料综合了多孔陶瓷机械强度高和比表面积大、孔隙率高的优势，用作生物填料具有生物亲和性好，挂膜容易，强度高，反冲洗容易等优越性能。
Polyurethane/ceramic composite biological filler for sewage treatment and preparation method
一种污水处理用聚氨酯/陶瓷复合生物填料及制备方法
CHEN QING (author) / ZENG JUNTANG (author) / SI WENBIN (author) / BAI TAO (author)
2021-01-15
Patent
Electronic Resource
Chinese
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