Sonny Astani Department of Civil and Environmental Engineering, Viterbi School of Engineering, University of Southern California, KAP 210, 3620 South Vermont Avenue, Los Angeles, CA 90089, USA.
J Environ Sci (China). 2010;22(7):991-7. doi: 10.1016/s1001-0742(09)60209-6.
The UV photooxidation with Fe(III) and H2O2 was employed to treat a naval derusting wastewater, which contains the high COD (chemical oxygen demand) and various metal concentrations exceptionally with high concentrations of citric acid and iron. Because of its iron containment, the Fenton-like reaction automatically took place with the added amount of H2O2. The decomposition rate was found in a sequence of: UV/H2O2/Fe(III) > UV/H2O2 > Fe(II)/H2O2. Two H2O2 injection methods, single and multiple points, were evaluated. The multiple-point H202 injection was more efficient to decompose the citric acid. The decomposition of the synthetic citric acid and the real derusting citric acid wastewater was also compared. The 93% COD reduction of the derusting wastewater was achieved using the UV/H2O2/Fe(III) treatment.
采用 UV/Fe(III)和 H2O2 光氧化法处理海军除锈废水，该废水含有高 COD（化学需氧量）和各种金属浓度，特别是柠檬酸和铁浓度很高。由于其含铁量，加入 H2O2 后会自动发生类 Fenton 反应。分解速率的顺序为：UV/H2O2/Fe(III) > UV/H2O2 > Fe(II)/H2O2。评估了两种 H2O2 注入方法，单点和多点。多点 H202 注入对柠檬酸的分解更有效。还比较了合成柠檬酸和实际除锈柠檬酸废水的分解情况。采用 UV/H2O2/Fe(III)处理，可将除锈废水的 COD 去除率达到 93%。
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