A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for improving microbial corrosion resistance of concrete sewage pipeline
The invention discloses a method for improving microbial corrosion resistance of a concrete sewage pipeline. The method comprises the following steps: drying egg shells and then preparing into powder; mixing egg shell powder, a copper salt solution and a cationic surfactant, centrifuging to obtain a solid substance, drying and grinding to obtain modified egg shell powder; fly ash, the modified egg shell powder, sand and an alkali activator are mixed to form a hydraulic polymer cementing material, and the concrete test piece doped with the modified egg shell powder is prepared after curing. Compared with a traditional bactericide doped with metal oxide, the antibacterial substance with the egg shell powder as the carrier can be uniformly distributed in the geopolymer concrete test piece, and the doping amount of the metal bactericide in the test piece can be increased on the premise that the mechanical property of the test piece is not reduced. The test piece doped with the bactericide can effectively inhibit the growth and reproduction of harmful bacteria such as sulfate reducing bacteria and sulfur oxidizing bacteria in a sewage system, so that the generation of biological sulfuric acid is reduced, and the durability of a sewage pipeline is improved.
本发明公开了一种提升混凝土污水管道抗微生物腐蚀的方法，包括以下步骤：将鸡蛋壳干燥后制成粉末；将鸡蛋壳粉、铜盐溶液及阳离子表面活性剂混合，经离心后得固体物质，干燥研磨后得改性后的鸡蛋壳粉；将粉煤灰、改性后的鸡蛋壳粉、砂和碱激发剂混合，形成水硬性聚合物胶凝材料，经养护后制得掺有改性鸡蛋壳粉的混凝土试件。与传统的内掺金属氧化物杀菌剂相比，鸡蛋壳粉作为载体的抑菌物质能够均匀地分布于地聚物混凝土试件内部，能够在不降低试件力学性能的前提下，提升金属杀菌剂在试件中的掺量。掺有杀菌剂的试件能够有效抑制污水系统中有害细菌的生长繁殖，如硫酸盐还原菌和硫氧化菌等，从而减少生物硫酸的生成，提升污水管道的耐久性。
Method for improving microbial corrosion resistance of concrete sewage pipeline
The invention discloses a method for improving microbial corrosion resistance of a concrete sewage pipeline. The method comprises the following steps: drying egg shells and then preparing into powder; mixing egg shell powder, a copper salt solution and a cationic surfactant, centrifuging to obtain a solid substance, drying and grinding to obtain modified egg shell powder; fly ash, the modified egg shell powder, sand and an alkali activator are mixed to form a hydraulic polymer cementing material, and the concrete test piece doped with the modified egg shell powder is prepared after curing. Compared with a traditional bactericide doped with metal oxide, the antibacterial substance with the egg shell powder as the carrier can be uniformly distributed in the geopolymer concrete test piece, and the doping amount of the metal bactericide in the test piece can be increased on the premise that the mechanical property of the test piece is not reduced. The test piece doped with the bactericide can effectively inhibit the growth and reproduction of harmful bacteria such as sulfate reducing bacteria and sulfur oxidizing bacteria in a sewage system, so that the generation of biological sulfuric acid is reduced, and the durability of a sewage pipeline is improved.
本发明公开了一种提升混凝土污水管道抗微生物腐蚀的方法，包括以下步骤：将鸡蛋壳干燥后制成粉末；将鸡蛋壳粉、铜盐溶液及阳离子表面活性剂混合，经离心后得固体物质，干燥研磨后得改性后的鸡蛋壳粉；将粉煤灰、改性后的鸡蛋壳粉、砂和碱激发剂混合，形成水硬性聚合物胶凝材料，经养护后制得掺有改性鸡蛋壳粉的混凝土试件。与传统的内掺金属氧化物杀菌剂相比，鸡蛋壳粉作为载体的抑菌物质能够均匀地分布于地聚物混凝土试件内部，能够在不降低试件力学性能的前提下，提升金属杀菌剂在试件中的掺量。掺有杀菌剂的试件能够有效抑制污水系统中有害细菌的生长繁殖，如硫酸盐还原菌和硫氧化菌等，从而减少生物硫酸的生成，提升污水管道的耐久性。
Method for improving microbial corrosion resistance of concrete sewage pipeline
一种提升混凝土污水管道抗微生物腐蚀的方法
ZHU ZHENGYU (author) / CHU HONGQIANG (author) / XU YI (author) / WU JIANFENG (author) / GU YUE (author) / GUO MINGZHI (author) / LI XUANLIN (author) / JIANG LINHUA (author)
2022-04-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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