Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-strength building material from sludge and obtained high-strength building material
The invention relates to a method for preparing a high-strength building material from sludge and the obtained high-strength building material. The method specifically comprises the following steps of 1) taking the sludge subjected to pre-dehydration treatment, carrying out pretreatment by adopting a wet oxidation reaction, and then carrying out dehydration to obtain sludge residues, 2) drying the sludge residues, uniformly mixing the sludge residues with a calcium additive, and then pressing and forming, and 3) demolding the pressed material, and drying again to obtain the high-strength building material. Compared with the prior art, the wet oxidation pretreatment technology is mainly utilized, organic matter in the sludge is basically removed, then the sludge is mixed with the calcium additive, high-temperature sintering is not needed, the method has the advantages of low energy consumption and high quality, secondary pollution cannot be caused, the treatment cost is lower, the process is simple, and the synthesized material is high in strength and wide in utilization range; and good economic and social benefits are achieved.
本发明涉及一种利用污泥制备高强度建材的方法及得到的高强度建材，所述方法具体包括以下步骤：1)取预脱水处理后的污泥采用湿式氧化反应进行预处理，再进行脱水得到污泥残渣；2)将污泥残渣烘干，再与钙质添加剂混合均匀，之后压制成形；3)将压制好的物料脱模，再次烘干，即得高强度建材。与现有技术相比，本发明主要是利用湿式氧化预处理技术，基本上去除了污泥中的有机物，然后再与钙质添加剂混合，无需高温烧结，具有低能耗高品质的优点，不会造成二次污染且处理成本更低，工艺简单，合成的材料强度高，利用面广，具有很好的经济和社会效益。
Method for preparing high-strength building material from sludge and obtained high-strength building material
The invention relates to a method for preparing a high-strength building material from sludge and the obtained high-strength building material. The method specifically comprises the following steps of 1) taking the sludge subjected to pre-dehydration treatment, carrying out pretreatment by adopting a wet oxidation reaction, and then carrying out dehydration to obtain sludge residues, 2) drying the sludge residues, uniformly mixing the sludge residues with a calcium additive, and then pressing and forming, and 3) demolding the pressed material, and drying again to obtain the high-strength building material. Compared with the prior art, the wet oxidation pretreatment technology is mainly utilized, organic matter in the sludge is basically removed, then the sludge is mixed with the calcium additive, high-temperature sintering is not needed, the method has the advantages of low energy consumption and high quality, secondary pollution cannot be caused, the treatment cost is lower, the process is simple, and the synthesized material is high in strength and wide in utilization range; and good economic and social benefits are achieved.
本发明涉及一种利用污泥制备高强度建材的方法及得到的高强度建材，所述方法具体包括以下步骤：1)取预脱水处理后的污泥采用湿式氧化反应进行预处理，再进行脱水得到污泥残渣；2)将污泥残渣烘干，再与钙质添加剂混合均匀，之后压制成形；3)将压制好的物料脱模，再次烘干，即得高强度建材。与现有技术相比，本发明主要是利用湿式氧化预处理技术，基本上去除了污泥中的有机物，然后再与钙质添加剂混合，无需高温烧结，具有低能耗高品质的优点，不会造成二次污染且处理成本更低，工艺简单，合成的材料强度高，利用面广，具有很好的经济和社会效益。
Method for preparing high-strength building material from sludge and obtained high-strength building material
一种利用污泥制备高强度建材的方法及得到的高强度建材
ZENG XU (Autor:in) / YAO GUODONG (Autor:in) / ZHAO JIANFU (Autor:in)
24.12.2021
Patent
Elektronische Ressource
Chinesisch
Method for preparing new high-strength building material from tailing waste residues
| Europäisches Patentamt | 2024