在反透系统中对二氧化碳进行尺度控制的研究
Midhun Joy1, Roel Boussemaere2
1Air Liquide Innovation Campus, Newark, DE, USA.
Journal of environmental management
|January 1, 2025
概括
本研究探讨二氧化碳 (CO2) 作为矿物酸和反剂的更安全替代品,用于反透 (RO) 尺度控制. 二氧化碳看起来很有前途,但需要仔细管理剂量和透二氧化碳水平.
科学领域:
- 水处理技术水处理技术.
- 膜科学与工程 膜科学与工程
- 环境化学环境化学
背景情况:
- 无机层沉积,如碳酸,显著阻碍反透系统 (RO) 的性能.
- 目前的规模减缓策略,包括矿物酸和抗剂,存在环境和运营方面的挑战.
- 硫酸的使用涉及处理危险和升高的硫酸盐排放,而防剂造成高成本和影响水体.
研究的目的:
- 研究基于二氧化碳 (CO2) 的方法对控制RO系统中的无机规模的有效性.
- 评估基于二氧化碳的尺度控制与矿物酸和抗剂等传统方法相比.
- 确定CO2的运行限制和适合性,用于不同度和硬度的RO料水.
主要方法:
- 使用商业模拟软件来建模和比较规模控制策略 (矿物酸,CO2,抗剂).
- 开发了热图图表,以评估基于二氧化碳的方法在各种料水组成 (性和硬度) 中的适用性.
- 在一个工业食品加工厂进行了试点规模的试验,以验证模拟结果并评估运营可行性.
主要成果:
- 模拟结果证实了二氧化碳对RO规模控制的可行性.
- 确定了关键挑战,包括管理RO透中的自由CO2和高性/硬度料水所需的高CO2剂量.
- 试点试验证实了模拟结果,并突出了CO2预处理的实际操作考虑.
结论:
- 二氧化碳为RO规模控制提供了一个可行的替代方案,比传统方法提供了潜在的环境和安全益处.
- 有效实施基于二氧化碳的尺度控制需要精确管理剂量速率和透二氧化碳度.
- 需要进一步的研究和优化,以应对运营方面的挑战,并最大限度地利用CO2预处理在工业RO应用中的好处.
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