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重力驱动的膜与膜蒸集成,用于高效地处理页岩气产生的水

Zhengxuan Ji¹, Jiaxuan Wang¹, Zhongsen Yan²

¹School of Architecture & Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.

|August 31, 2024

概括

将重力驱动膜 (GDM) 与膜蒸 (MD) 集成,有效地处理危险的页岩气产生的水 (SGPW). 预处理方法提高GDM性能,减少污染,并改善透质量,以实现高效的海水淡化.

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:

页岩气勘探产生了大量的危险产水 (SGPW).
膜蒸 (MD) 显示了SGPW淡化潜力,但面临着膜污染和湿等挑战.
重力驱动膜 (GDM) 集成为提高MD性能提供了一个有希望的解决方案.

研究的目的:

调查GDM-MD系统在治疗SGPW时的不同预处理方法的有效性.
分析预处理对GDM污染,透质量和整体MD性能的影响.
评估GDM在去除氨和UV254.4等污染物的吸附-生物降解能力.

主要方法:

对GDM的预处理方法进行系统的调查,包括氧化,凝固和颗粒过.
分析GDM污染层形态及其与流量性能的相关性.
评估GDM中的微生物群落变化及其在透质量中的作用.
使用特定的过-GDM组合 (焦岩石,颗粒状活性炭) 评估污染物 (氨,UV254) 的去除.
将GDM-MD性能与SGPW处理的单个MD进行比较,重点是导电性和流量下降.

主要成果:

预处理成功地减轻了GDM污染,并通过丰富有益的微生物改善了透质量.
凝固和砂过分别产生了厚厚/粗/水性和薄薄/松散的污垢层,增强了GDM流量的2.92倍和1.9倍.
泽奥利特过-GDM实现了100%的氨去除,而颗粒活性炭过-GDM去除了53.99%的UV254.
与单个MD相比,GDM-MD显著控制了透导电性 (1.39-19.9μS/cm) 并减少了MD污染 (流量下降8.3%-27.5%).

结论:

GDM-MD工艺,特别是优化预处理,为SGPW淡化提供了高效和经济的解决方案.
预处理策略对GDM污染特性和随后的海水淡化效率产生重大影响.
集成的GDM-MD系统在减少污染,湿和改善危险水处理的透质量方面表现出卓越的性能.

关键词:

凝血是凝固的过程.颗粒过的细粒过方法引力驱动膜 (GDM) 是一种重力驱动膜.膜蒸 (MD) 是一种方法.氧化过程中的氧化.页岩气产生的水 (SGPW)

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