酸盐减轻矿物质在盐水中的缩放反透溶解
Kai-Ge Lu1, Shuanglong Ma2, Dangling Hua2
1College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory for Water and Sediment Science, Ministry of Education, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing 100875, China.
Water research
|August 3, 2023
概括
通过在矿物沉周围形成保护层来缓解反透膜 (RO) 上的缩放. 这种介导的效应减少了水流量下降,特别是在无形酸盐 (ACP) 缩放时.
科学领域:
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
- 化学工程是化学工程的重要组成部分.
背景情况:
- 盐水淡化过程中的反透膜 (RO) 往往会经历和基矿物质的缩放.
- 有限的研究存在于组合的和基矿物质缩在RO膜的形成机制和影响.
- 了解这些相互作用对于优化海水淡化效率和膜寿命至关重要.
研究的目的:
- 在RO膜上研究与石膏 (非性) 和无形酸盐 (ACP,性) 的结合缩放.
- 阐明这些结合的缩放类型对膜性能和水流的独特影响.
- 探索基于的矿物质缩放的介导缓解的潜在机制.
主要方法:
- 在模拟的水条件下,使用二氧化与石膏和ACP的联合缩放的实验研究.
- 对膜性能进行分析,重点关注水流量下降.
- 缩放层的微观和化学表征,以了解沉物形成和形态.
主要成果:
- 与单个矿物质缩放相比,二氧化和基矿物质的共存显著减少了水流量下降.
- 石在矿物沉周围形成了保护层,阻碍了矿物沉的聚合和形态演变.
- 在ACP化上表现出比石膏化更强的缓解作用,这是由于ACP化增强了皮形成.
结论:
- 在缓解RO膜的联合矿物质化方面发挥着至关重要的作用,特别是与ACP.
- 石皮的形成是减少基于的矿物质化的影响的关键机制.
- 这些发现为设计适合水淡化而定制的抗缩RO膜提供了洞察力.
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