光-Fenton、O/HO/UV 和光催化工艺处理灰色水的比较。
Comparison of photo-Fenton, O/HO/UV and photocatalytic processes for the treatment of gray water.
机构信息
Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran.
出版信息
Ecotoxicol Environ Saf. 2018 Oct;161:683-690. doi: 10.1016/j.ecoenv.2018.06.039. Epub 2018 Jun 21.
This research was carried out to compare and optimize the gray water treatment performance by the photo-Fenton, photocatalysis and ozone/HO/UV processes. Experimental design and optimization were carried out using Central Composite Design of Response Surface Methodology. The results of experiments showed that the most effective and influencing factors in photo-Fenton process were HO/Fe ratio, in ozone/HO/UV experiment were O concentration, HO concentration, reaction time and pH and in photocatalytic process were TiO concentration, pH and reaction time. The highest COD removal in photo-Fenton, ozone/HO/UV and photocatalytic process were 90%, 92% and 55%, respectively. The results were analyzed by design expert software and for all three processes second-order models were proposed to simulate the COD removal efficiency. In conclusion the ozone/HO/UV process is recommended for the treatment of gray water, since it was able to remove both COD and turbidity by 92% and 93%, respectively.
本研究旨在通过光芬顿、光催化和臭氧/H₂O₂/UV 工艺比较和优化灰水的处理性能。采用响应面法的中心组合设计进行实验设计和优化。实验结果表明，在光芬顿工艺中最有效且影响因素最大的是 HO/Fe 比，在臭氧/H₂O₂/UV 实验中影响最大的是 O₃浓度、H₂O₂浓度、反应时间和 pH 值，而在光催化工艺中影响最大的是 TiO₂浓度、pH 值和反应时间。光芬顿、臭氧/H₂O₂/UV 和光催化工艺的 COD 去除率最高分别为 90%、92%和 55%。采用设计专家软件对结果进行分析，为所有三种工艺均提出了二阶模型以模拟 COD 去除效率。结论认为，臭氧/H₂O₂/UV 工艺是处理灰水的推荐工艺，因为它能够分别将 COD 和浊度去除 92%和 93%。
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