在类似的奥斯摩斯压力梯度下,用于金属加工废水的向前透
Noel Devaere1, Vladimiros Papangelakis1
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada.
Membranes
|May 26, 2023
概括
向前透 (FO) 可以从采矿废水中回收水. 优化透压梯度可以使水流量提高30%以上,而不会增加能源成本.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 水处理技术水处理技术
背景情况:
- 采矿和金属加工产生高盐度的水性废水,这给处理带来了挑战.
- 传统的水回收方法往往耗费大量能源.
- 向前透 (FO) 提供了一种低能耗的替代方法,用于使用吸水溶液处理水.
研究的目的:
- 调查关键变量对工业废水前透中的水流的影响.
- 为了解决以往研究中的局限性,这些研究使用度而不是奥斯莫斯压力来进行表征.
- 为了证明FO在处理溶剂提取精炼油和矿山废水中的应用意义.
主要方法:
- 利用实验的因数设计方法来分析独立和交互效应.
- 检查的变量包括透压梯度,横流速度,抽盐类型和膜方向.
- 使用商业FO膜,并与工业料样本 (溶剂提取精炼和矿山水废水) 进行测试.
主要成果:
- 通过透压,而不是度来表征料和抽取溶液,对于准确的性能评估至关重要.
- 优化透压梯度显著改善了水的流量.
- 通过优化独立变量,特别是透梯度,实现了超过30%的水流改善.
- 保持高盐排斥率在95-99%之间.
结论:
- 向前透是一种可行的,低能耗的技术,用于从具有挑战性的工业废水中回收水.
- 优化透压梯度是最大化FO系统中水流量的关键.
- 这项研究为提高矿业和金属加工应用中的FO性能提供了关键的见解,而不会增加能源消耗.
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