通过盐水处理工业废水的超纯水生产
Adriana Hernández Miraflores1, Karina Hernández Gómez1, Claudia Muro1
1Tecnológico Nacional de México, Instituto Tecnológico de Toluca, Av. Tecnológico S/N, Col. Agrícola Bellavista, Metepec 52149, Mexico.
Membranes
|April 25, 2025
概括
这项研究展示了一种膜系统,用于从盐酸食品工业废水中产生超纯水. 使用抗和离子交换树脂的反透有效地去除了盐和离子,产生了高质量的水.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 工业废水管理 工业废水管理
背景情况:
- 头食品行业的废水由于盐度高和矿物质含量高,造成了挑战.
- 现有的处理方法可能不具有成本效益或效率,以从这些来源产生超纯水.
- 膜缩和污染是处理性工业废水的重要问题.
研究的目的:
- 开发和评估一种膜系统,从盐酸装食品工业废水中生产超纯水.
- 评估反透 (RO) 用抗和离子交换树脂 (IEXR) 净化水的有效性.
- 确定再利用经过处理的盐水的可行性和该过程的成本效益.
主要方法:
- 一个两阶段的处理过程,结合了反透 (RO) 和离子交换树脂 (IEXRs).
- 在RO阶段使用六甲酸盐作为抗化剂,以防止矿物化.
- 使用阳离子和混合阴离子-阳离子树脂进行脱离离子,以达到超纯水质.
主要成果:
- 优化的抗剂剂量为6mg/L,使RO透物具有65-70%的清洁水效率,污染最小.
- 经过RO处理,可以消除20%的总溶解固体 (TDS),有效降低盐度.
- 离子交换树脂去除了99.8%的化物离子和其他单价盐,产生了超纯的水,电导率低于3.3μS/cm.
- 超纯水生产的估计成本为2.62美元/m3.
结论:
- 合并的RO和IEXR系统有效地从性工业废水中产生高纯度的水.
- 六甲酸盐成功地减轻了膜缩放,提高了RO过程的效率.
- 经过处理的盐水有可能在食品工业应用中重复使用,为循环经济方法做出贡献.
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