A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improved sandstone as well as preparation method and application thereof
The invention relates to an improved sandstone and a preparation method and application thereof.The preparation method comprises the steps that municipal sludge particles and sandstone particles are mixed, a gel material, water and vermiculite are added in the mixing process for mixed granulation, the adding amount of the gel material accounts for 5%-10% of the weight of the water, the improved sandstone is obtained after natural airing, the water content of the municipal sludge is not higher than 40 wt.%, and the vermiculite accounts for 5%-10% of the weight of the water. The particle size is not higher than 10mm; the particle size of the sandstone is not more than 2 mm. According to the method, the arsenic sandstone is improved by utilizing the residual sludge of the municipal sewage treatment plant, the advantages of the arsenic sandstone and the residual sludge are fully played, the aggregate structure of the arsenic sandstone is effectively improved by utilizing the cohesiveness and the water-retaining property of the cementing material, the water-retaining property and the soil fertility are remarkably improved, and the porosity of the improved arsenic sandstone can be improved by vermiculite; the blending method not only realizes resource utilization of the municipal sludge and the arsenic sandstone, but also has a synergistic effect, has important significance on soil improvement and vegetation restoration of the arsenic sandstone area, and has relatively high application and popularization values in the arsenic sandstone area.
一种改良砒砂岩及其制备方法和应用，步骤为：将市政污泥颗粒与砒砂岩颗粒混合，混合过程中添加胶凝材料、水和蛭石进行混合造粒，所述凝胶材料的添加量占水重量的5%‑10%，自然晾干后得改良砒砂岩，所述市政污泥的含水率不高于40wt.%，粒径不高于10 mm；所述砒砂岩的粒径不高于2 mm。本发明利用城镇污水处理厂的剩余污泥改良砒砂岩，充分发挥两者的优势，并利用胶凝材料的粘结性和保水性有效的改良了砒砂岩团粒体结构，显著提升了持水性和土壤肥力，蛭石可以提高改良砒砂岩的孔隙率，这种混配方法不仅实现了市政污泥和砒砂岩的资源化利用，而且还具有协同增效的效果，这对砒砂岩区的土质改良和植被恢复具有重要意义，在砒砂岩区具有较高的应用和推广价值。
Improved sandstone as well as preparation method and application thereof
The invention relates to an improved sandstone and a preparation method and application thereof.The preparation method comprises the steps that municipal sludge particles and sandstone particles are mixed, a gel material, water and vermiculite are added in the mixing process for mixed granulation, the adding amount of the gel material accounts for 5%-10% of the weight of the water, the improved sandstone is obtained after natural airing, the water content of the municipal sludge is not higher than 40 wt.%, and the vermiculite accounts for 5%-10% of the weight of the water. The particle size is not higher than 10mm; the particle size of the sandstone is not more than 2 mm. According to the method, the arsenic sandstone is improved by utilizing the residual sludge of the municipal sewage treatment plant, the advantages of the arsenic sandstone and the residual sludge are fully played, the aggregate structure of the arsenic sandstone is effectively improved by utilizing the cohesiveness and the water-retaining property of the cementing material, the water-retaining property and the soil fertility are remarkably improved, and the porosity of the improved arsenic sandstone can be improved by vermiculite; the blending method not only realizes resource utilization of the municipal sludge and the arsenic sandstone, but also has a synergistic effect, has important significance on soil improvement and vegetation restoration of the arsenic sandstone area, and has relatively high application and popularization values in the arsenic sandstone area.
一种改良砒砂岩及其制备方法和应用，步骤为：将市政污泥颗粒与砒砂岩颗粒混合，混合过程中添加胶凝材料、水和蛭石进行混合造粒，所述凝胶材料的添加量占水重量的5%‑10%，自然晾干后得改良砒砂岩，所述市政污泥的含水率不高于40wt.%，粒径不高于10 mm；所述砒砂岩的粒径不高于2 mm。本发明利用城镇污水处理厂的剩余污泥改良砒砂岩，充分发挥两者的优势，并利用胶凝材料的粘结性和保水性有效的改良了砒砂岩团粒体结构，显著提升了持水性和土壤肥力，蛭石可以提高改良砒砂岩的孔隙率，这种混配方法不仅实现了市政污泥和砒砂岩的资源化利用，而且还具有协同增效的效果，这对砒砂岩区的土质改良和植被恢复具有重要意义，在砒砂岩区具有较高的应用和推广价值。
Improved sandstone as well as preparation method and application thereof
一种改良砒砂岩及其制备方法和应用
LIANG ZHISHUI (author) / WU ZHIREN (author) / GAO HAIYING (author)
2022-11-01
Patent
Electronic Resource
Chinese
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