混凝土搅拌站废水在混凝土中的利用现状

发布时间：2018-02-16 13:25

本文关键词： 混凝土搅拌站废水固含量离子浓度　出处：《混凝土》2017年07期 　论文类型：期刊论文

【摘要】：搅拌站废水的合理利用是搅拌站绿色生产和管理星级评价的主要指标之一,但合理有效利用一直是一个技术难题。综述了废水的性质和处理工艺,并探讨废水掺量或浓度、缓凝组分、离子浓度与混凝土性能的关系,发现废水掺量或浓度是目前考虑最多的因素,较高的废水掺量或浓度会造成凝结时间缩短和流动性及强度明显降低;废水掺量和浓度变化对混凝土性能的影响最终可以归结为所掺加废水中总固含量的影响;更有效废水处理工艺设计是必须的,同时废水中离子浓度随时间的变化以及对混凝土的性能的影响有待研究。这些工作的开展对于进一步推进搅拌站废水利用具有重要意义。
[Abstract]:The rational utilization of waste water in mixing plant is one of the main indexes of green production and management star evaluation, but the rational and effective utilization is always a technical problem. This paper summarizes the nature and treatment process of wastewater, and probes into the quantity or concentration of waste water. The relationship between retarding component, ion concentration and concrete performance, it is found that the most important factor is wastewater content or concentration at present, and higher waste water content or concentration will shorten the setting time and decrease the fluidity and strength obviously. The influence of the quantity and concentration of waste water on the concrete performance can be attributed to the effect of the total solid content in the mixed wastewater, and the more effective process design of wastewater treatment is necessary. At the same time, the change of ion concentration in wastewater with time and the influence on concrete performance need to be studied. The development of these works is of great significance for further promoting the utilization of wastewater from mixing plant.
【作者单位】：河南城建学院土木与交通工程学院;兰州理工大学材料科学与工程学院;
【基金】：河南省教育厅项目“搅拌站废水做混凝土拌和水的机理研究”(16A560014) 河南城建学院博士启动基金项目“搅拌站废水预处理工艺的优化设计”(2015JBS004)
【分类号】：TU528

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