<br>通过臭氧化工艺同时再生活性炭和去除吸附的莠去津：从实验室规模到中试研究,Water Research

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通过臭氧化工艺同时再生活性炭和去除吸附的莠去津：从实验室规模到中试研究
Water Research ( IF 11.4 ) Pub Date : 2024-01-06 , DOI: 10.1016/j.watres.2024.121113
Shan Liu ₁ , Zhonglin Chen ₁ , Yang Shen ₁ , Hao Chen ₁ , Zhenxin Li ₁ , Liming Cai ₁ , Hanbin Yang ₁ , Congshi Zhu ₁ , Jimin Shen ₁ , Jing Kang ₁ , Pengwei Yan ₁

Affiliation

构建了一种结合颗粒活性炭（GAC）吸附和臭氧再生的新型处理技术，以实现持久的水净化。 GAC吸附对莠去津（ATZ）表现出高性能（99.9％），臭氧再生确保了GAC用于水净化的可回收性。通过多种途径评估再生过程，以协助高效的吸附过程。与传统臭氧相比，采用臭氧微纳米气泡（O3-MNB）再生GAC表现出优越的性能。同时，抑制溴酸盐（BrO3−）的形成。 ATZ吸附过程受到孔隙填充、氢键作用和π-π EDA相互作用的影响。表面酚羟基、羧基和吡啶氮有利于引发臭氧产生活性氧，使活性炭表面再生。通过中试长期运行验证了吸附再生工艺的优越性能。显着提高有机微污染物、UV254、高锰酸盐指数的去除效果。此外，间歇性的O3-MNBs再生过程可以有效净化GAC的孔结构内的污染，这也有效地保护了孔结构免遭破坏。实际应用中，可节省制水成本约0.63 kWh m−3。该工作为经济产水提出了新的思路和理论支持。

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Simultaneous regeneration of activated carbon and removal of adsorbed atrazine by ozonation process: From laboratory scale to pilot studies

A novel treatment technique by coupling granular activated carbon (GAC) adsorption and ozone regeneration was constructed for long-lasting water decontamination. The GAC adsorption showed high performance for atrazine (ATZ) removal (99.9 %), and the ozone regeneration ensured the recyclability of GAC for water purification. The regeneration process was evaluated via several paths to assist the efficient adsorption process. Employing ozone micro-nano bubbles (O3-MNBs) for regenerating GAC showed superior performance compared to traditional ozone. Meantime, inhibiting the formation of bromate (BrO3−). ATZ adsorption process suffered from the pore-filling, hydrogen bonding effect and π-π EDA interaction. The surface phenolic hydroxyl group, carboxyl group and pyridine nitrogen benefitted the triggering of ozone to generate reactive oxygen species, and regenerate the GAC surface. The superior performance of the adsorption and regeneration process was verified via a long-term running by a pilot study. It significantly improved the removal of organic micropollutants, UV254 and permanganate index. Additionally, the intermittent O3-MNBs regeneration process resulted in efficient decontamination within the pores structure of GAC, which also effectively preserved the pore structure from destruction. For actual application, the cost of water production can be saved around 0.63 kWh m−3. This work proposed new ideas and theoretical support for economic water production.

更新日期：2024-01-06

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