Sun Weihua, Chen Lujun, Zhang Yongming, Wang Jianlong
College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
School of Environment, Tsinghua University, Beijing 100084, China; Zhejiang Provincial Key Laboratory of Water Science and Technology, Zhejiang Province, Jiaxing 314006, China.
J Environ Sci (China). 2015 Aug 1;34:63-7. doi: 10.1016/j.jes.2015.01.020. Epub 2015 May 14.
Ozonation and ionizing radiation are both advanced oxidation processes (AOPs) without chemical addition and secondary pollution. Also, the two processes' efficiency is determined by different pH conditions, which creates more possibilities for their combination. Importantly, the combined process of ozonation and ionizing radiation could be suitable for treating wastewaters with extreme pH values, i.e., textile wastewater. To find synergistic effects, the combined process of ozonation and ionizing radiation mineralization was investigated for degradation of polyvinyl alcohol (PVA) at different pH levels. A synergistic effect was found at initial pH in the range 3.0-9.4. When the initial pH was 3.0, the combined process of ozonation and ionizing radiation gave a PVA mineralization degree of 17%. This was 2.7 times the sum achieved by the two individual processes, and factors of 2.1 and 1.7 were achieved at initial pH of 7.0 and 9.4, respectively. The combined process of ozonation and ionizing radiation was demonstrated to be a feasible strategy for treatment of PVA-containing wastewater.
臭氧化和电离辐射都是无需添加化学物质且无二次污染的高级氧化过程（AOPs）。此外，这两种过程的效率取决于不同的pH条件，这为它们的联合创造了更多可能性。重要的是，臭氧化和电离辐射的联合过程可能适用于处理极端pH值的废水，即纺织废水。为了找到协同效应，研究了臭氧化和电离辐射矿化的联合过程在不同pH水平下对聚乙烯醇（PVA）的降解情况。在初始pH值为3.0 - 9.4的范围内发现了协同效应。当初始pH值为3.0时，臭氧化和电离辐射的联合过程使PVA矿化度达到17%。这是两个单独过程之和的2.7倍，在初始pH值为7.0和9.4时，分别达到了2.1倍和1.7倍。臭氧化和电离辐射的联合过程被证明是处理含PVA废水的一种可行策略。
