Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of preparation of concrete admixtures, and particularly relates to a method for preparing a high-efficiency water reducing agent by utilizing wastewater, which comprises the following steps: 1, selecting raw materials including a plurality of parts of acetone, formaldehyde, sodium sulfite, sodium tripolyphosphate, a composite oxidant, a reducing agent and a flocculating agent as well as a plurality of parts of waste liquid and water; 2, pretreating the waste liquid to degrade the harmful substances; 3, synthesizing polycarboxylic acid mother liquor; and 4, compounding the polycarboxylic acid mother liquor. The method has the beneficial effects that waste liquid is used as a production raw material, so that the production cost is effectively reduced; and the waste liquid is pretreated to degrade harmful substances. The method is green and environment-friendly, and is convenient for wastewater treatment; the polycarboxylic acid mother liquor is compounded, so that the adaptation effect of the polycarboxylic acid water reducing agent and cement can be effectively improved, and the polycarboxylic acid water reducing agent has good compatibility with various types of cement. Besides, the slump retention performance of the concrete is good, and the construction time of the concrete is prolonged.
本发明属于混凝土外加剂制备技术领域，尤其为一种利用废水制备高效减水剂的方法，该方法包括以下步骤：步骤1，选取原料：包括若干份丙酮、甲醛、亚硫酸钠、三聚磷酸钠、复合氧化剂、还原剂与絮凝剂以及若干份废液与水；步骤2，对废液预处理，降解有害物质；步骤3、合成聚羧酸母液；步骤4、对聚羧酸母液进行复配；本发明有益效果：采用废液作为生产原料，从而有效降低生产成本，并对废液进行预处理，降解有害物质，不仅绿色环保还便于废水处理，聚羧酸母液进行复配，可有效改善聚羧酸减水剂与水泥的适应作用，与各种水泥的相容性好，混凝土的坍落度保持性能好，延长混凝土的施工时间。
The invention belongs to the technical field of preparation of concrete admixtures, and particularly relates to a method for preparing a high-efficiency water reducing agent by utilizing wastewater, which comprises the following steps: 1, selecting raw materials including a plurality of parts of acetone, formaldehyde, sodium sulfite, sodium tripolyphosphate, a composite oxidant, a reducing agent and a flocculating agent as well as a plurality of parts of waste liquid and water; 2, pretreating the waste liquid to degrade the harmful substances; 3, synthesizing polycarboxylic acid mother liquor; and 4, compounding the polycarboxylic acid mother liquor. The method has the beneficial effects that waste liquid is used as a production raw material, so that the production cost is effectively reduced; and the waste liquid is pretreated to degrade harmful substances. The method is green and environment-friendly, and is convenient for wastewater treatment; the polycarboxylic acid mother liquor is compounded, so that the adaptation effect of the polycarboxylic acid water reducing agent and cement can be effectively improved, and the polycarboxylic acid water reducing agent has good compatibility with various types of cement. Besides, the slump retention performance of the concrete is good, and the construction time of the concrete is prolonged.
本发明属于混凝土外加剂制备技术领域，尤其为一种利用废水制备高效减水剂的方法，该方法包括以下步骤：步骤1，选取原料：包括若干份丙酮、甲醛、亚硫酸钠、三聚磷酸钠、复合氧化剂、还原剂与絮凝剂以及若干份废液与水；步骤2，对废液预处理，降解有害物质；步骤3、合成聚羧酸母液；步骤4、对聚羧酸母液进行复配；本发明有益效果：采用废液作为生产原料，从而有效降低生产成本，并对废液进行预处理，降解有害物质，不仅绿色环保还便于废水处理，聚羧酸母液进行复配，可有效改善聚羧酸减水剂与水泥的适应作用，与各种水泥的相容性好，混凝土的坍落度保持性能好，延长混凝土的施工时间。
Method for preparing high-efficiency water reducing agent from wastewater
一种利用废水制备高效减水剂的方法
15.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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