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Modified municipal sludge for landfill soil covering and preparation method thereof
The invention specifically discloses a modified municipal sludge for landfill soil covering, which is prepared by using waste incineration fly ash and cement to modify municipal sludge, and is prepared by the following steps: mixing and stirring the fly ash with the particle size of 0.1-0.5 mm and the cement which is ordinary silicate P.O42.5 cement according to the mass ratio of municipal sludge/(cement + waste incineration fly ash) = 2 for 10 minutes; curing for 24 hours to obtain the soil covering material for the landfill in the rainwater-rich area; municipal sludge is poor in engineering property and large in direct recycling difficulty, the modified municipal sludge has the soil covering material condition by selecting the curing agent raw materials and optimizing the mixing proportion, and the strength can reach 250 kPa; according to the method, waste is treated by waste, the municipal sludge treatment efficiency is effectively improved, the use of cement materials is reduced, and the method has remarkable economic benefits and environmental friendliness.
本发明具体公开了一种填埋场覆土用改性市政污泥，利用垃圾焚烧飞灰与水泥改性市政污泥，按以下步骤进行：飞灰粒径0.1～0.5 mm，水泥为普通硅酸盐P.O42.5水泥，根据质量比配比，市政污泥/（水泥+垃圾焚烧飞灰）=2，混合搅拌10 min，养护24h即可作为雨水丰富地区填埋场覆土材料使用；市政污泥工程性质差，直接回收利用难度大，本发明通过对固化剂原料的选取以及配合比优化，使改性后的市政污泥具备覆土材料条件，强度可达250kPa；该方法以废治废，有效提高处理市政污泥的效率，减少水泥材料的使用，具有显著的经济效益和环保性。
Modified municipal sludge for landfill soil covering and preparation method thereof
The invention specifically discloses a modified municipal sludge for landfill soil covering, which is prepared by using waste incineration fly ash and cement to modify municipal sludge, and is prepared by the following steps: mixing and stirring the fly ash with the particle size of 0.1-0.5 mm and the cement which is ordinary silicate P.O42.5 cement according to the mass ratio of municipal sludge/(cement + waste incineration fly ash) = 2 for 10 minutes; curing for 24 hours to obtain the soil covering material for the landfill in the rainwater-rich area; municipal sludge is poor in engineering property and large in direct recycling difficulty, the modified municipal sludge has the soil covering material condition by selecting the curing agent raw materials and optimizing the mixing proportion, and the strength can reach 250 kPa; according to the method, waste is treated by waste, the municipal sludge treatment efficiency is effectively improved, the use of cement materials is reduced, and the method has remarkable economic benefits and environmental friendliness.
本发明具体公开了一种填埋场覆土用改性市政污泥，利用垃圾焚烧飞灰与水泥改性市政污泥，按以下步骤进行：飞灰粒径0.1～0.5 mm，水泥为普通硅酸盐P.O42.5水泥，根据质量比配比，市政污泥/（水泥+垃圾焚烧飞灰）=2，混合搅拌10 min，养护24h即可作为雨水丰富地区填埋场覆土材料使用；市政污泥工程性质差，直接回收利用难度大，本发明通过对固化剂原料的选取以及配合比优化，使改性后的市政污泥具备覆土材料条件，强度可达250kPa；该方法以废治废，有效提高处理市政污泥的效率，减少水泥材料的使用，具有显著的经济效益和环保性。
Modified municipal sludge for landfill soil covering and preparation method thereof
一种填埋场覆土用改性市政污泥及其制备方法
LUO HANXUAN (author) / XU HAOQING (author) / JIANG PENGMING (author) / GAO XINYI (author) / FAN XIHUI (author) / WANG LIYAN (author) / SHI XINMIAO (author) / QI YONGZHENG (author) / WU SILIN (author) / WU TAO (author)
2022-08-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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