反透膜清洁优化从织品染色废水再利用应用程序.
Zhengwei Wang1,2, Rulu Ouyang1,3, Guorui Zhang4
1Department of Municipal Engineering, School of Civil Engineering and Transportation, Guangzhou University, Guangzhou 510006, China.
Membranes
|January 27, 2026
概括
由织废水污染的反透膜 (RO) 的有效清洁包括性前冲和纯水反冲. 这种方法可以恢复多达96%的膜透性,而不会影响排斥能力,从而降低成本.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 膜科学 膜科学 膜科学
背景情况:
- 反透 (RO) 对于织染废水再利用至关重要.
- 膜污染严重降低了RO性能和经济可行性.
- 有效的膜清洁对于恢复透性和功能至关重要.
研究的目的:
- 评估前处理的织染废水在RO膜上的污染潜力.
- 系统地评估各种清洁方法对脏的RO膜的有效性.
- 为了优化清洁参数,最大限度地恢复透性,对排斥产生最小的影响.
主要方法:
- 进行了多批次过和清洗实验.
- RO膜污染是由经过预处理的织染料废水引起的.
- 使用单一和组合冲洗/反冲洗方法 (纯水,酸性,性,酸盐) 清洗的膜.
- 三维光激发发射矩阵谱法 (3D-FEEM) 确定了污染物.
- 在清洗前和清洗后测量了透性和排斥能力.
主要成果:
- 在60%的水回收下,在625L/m2的透物生产后,RO膜透率显著下降 (>15%).
- 蛋白质类物质和可溶微生物产品被确定为主要有机污染物.
- 单次向前冲洗显示出有限的恢复;联合酸和冲洗恢复了87%的透性.
- 优化性向前冲洗,然后再用纯水反冲洗 (0.125 MPa TMP,0.5 m/s CFV) 恢复了96%的透度,而不影响排斥.
- 这种优化的方法通过消除酸性清洗,可以降低潜在的成本.
结论:
- 性向前冲洗与纯水反冲洗相结合,对于恢复织染废水污染的RO膜透性是非常有效的.
- 优化的反冲参数 (0.125 MPa TMP,0.5 m/s CFV) 对于在不影响排斥的情况下实现高透度恢复至关重要.
- 开发的清洁策略为通过RO的织废水再利用提供了具有成本效益的解决方案.
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