Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pervious concrete with biological water purification function and preparation method thereof
The invention provides pervious concrete with a biological water purification function. The pervious concrete is formed by loading biological membranes on the inner surface and the outer surface of apervious concrete matrix; the pervious concrete matrix is prepared from 16-20 parts of ecological cement, 65-75 parts of 5-10mm limestone gravel, 5-10 parts of 5-10mm inorganic porous gravel, 1-5 parts of an inorganic porous powder material, 0.4-0.6 parts of a moisturizing enhancer and 6-10 parts of water, the porosity is 15%-25%, and the pore alkalinity is lower than 10; the biological membranesare formed by biofilm culturing, growth and propagation of nitrifying bacteria and denitrifying bacteria on the inner surface and the outer surface of the pervious concrete; and the bacterium loadingcapacity of the pervious concrete is that the total number of viable bacteria is greater than 8 billion/g. The invention also provides a method for preparing the pervious concrete. The pervious concrete is excellent in pervious performance, water purification performance and mechanical performance, and after the pervious concrete is used for water purification for 7 days, the removal rates of CODand ammonia nitrogen (NH4<+>-N) are 70% or above and 30% or above respectively.
本发明提供一种具有生物净水功能的透水混凝土，由透水混凝土基体的内、外表面负载生物膜构成；透水混凝土基体由16‑20份生态水泥、65‑75份5‑10mm石灰岩类碎石、5‑10份5‑10mm无机多孔碎石、1‑5份无机多孔粉体材料、0.4‑0.6份保湿增强剂和6‑10份水制成，孔隙率为15%~25%，孔隙碱度低于10；生物膜由硝化细菌和反硝化细菌在透水混凝土内、外表面挂膜生长繁殖形成；透水混凝土的细菌负载量为活菌总数大于80亿个/克。本发明还提供制备所述透水混凝土的方法。本发明的透水混凝土透水、净水和力学性能优异，用于水体净化7天后，COD和氨氮(NH4+‑N)的去除率分别在70%、30%以上。
Pervious concrete with biological water purification function and preparation method thereof
The invention provides pervious concrete with a biological water purification function. The pervious concrete is formed by loading biological membranes on the inner surface and the outer surface of apervious concrete matrix; the pervious concrete matrix is prepared from 16-20 parts of ecological cement, 65-75 parts of 5-10mm limestone gravel, 5-10 parts of 5-10mm inorganic porous gravel, 1-5 parts of an inorganic porous powder material, 0.4-0.6 parts of a moisturizing enhancer and 6-10 parts of water, the porosity is 15%-25%, and the pore alkalinity is lower than 10; the biological membranesare formed by biofilm culturing, growth and propagation of nitrifying bacteria and denitrifying bacteria on the inner surface and the outer surface of the pervious concrete; and the bacterium loadingcapacity of the pervious concrete is that the total number of viable bacteria is greater than 8 billion/g. The invention also provides a method for preparing the pervious concrete. The pervious concrete is excellent in pervious performance, water purification performance and mechanical performance, and after the pervious concrete is used for water purification for 7 days, the removal rates of CODand ammonia nitrogen (NH4<+>-N) are 70% or above and 30% or above respectively.
本发明提供一种具有生物净水功能的透水混凝土，由透水混凝土基体的内、外表面负载生物膜构成；透水混凝土基体由16‑20份生态水泥、65‑75份5‑10mm石灰岩类碎石、5‑10份5‑10mm无机多孔碎石、1‑5份无机多孔粉体材料、0.4‑0.6份保湿增强剂和6‑10份水制成，孔隙率为15%~25%，孔隙碱度低于10；生物膜由硝化细菌和反硝化细菌在透水混凝土内、外表面挂膜生长繁殖形成；透水混凝土的细菌负载量为活菌总数大于80亿个/克。本发明还提供制备所述透水混凝土的方法。本发明的透水混凝土透水、净水和力学性能优异，用于水体净化7天后，COD和氨氮(NH4+‑N)的去除率分别在70%、30%以上。
Pervious concrete with biological water purification function and preparation method thereof
一种具有生物净水功能的透水混凝土及其制备方法
JIANG JIANSONG (Autor:in) / XI HAIPING (Autor:in) / ZHANG JIANQIANG (Autor:in) / CHAI TIANHONG (Autor:in) / LIU GUIPING (Autor:in) / HU BO (Autor:in) / LI HONGWEI (Autor:in) / HU BIAO (Autor:in)
05.02.2021
Patent
Elektronische Ressource
Chinesisch
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