Fung P C, Poon C S, Chu C W, Tsui S M
Research Centre for Urban Environmental Technology and Management, Department of Civil and Structural Engineering,The Hong Kong Polytechnic University, Hong Kong.
Water Sci Technol. 2001;44(6):67-72.
Degradation of a dye, C. I . Reactive Red 120, in dyeing waatewater by the process o UV/H2O2/US was studied with a bench-scale reactor under the continuous mode of operation. The effects of dyeing wastewater flow rate and the feeding rate of an oxidant, H2O2, on the color removal efficiency of the process were investigated. The significance of ultrasonic (US) combined with UV irradiation was also investigated and the performances of the process on color removal were evaluated. The results showed that the decoloration process followed a pseudo first-order kinetic model and the UV light is the most significant factor on dye removal. Besides, at higher flow rates, incomplete color removal was observed due to relatively insufficient irradiation time (low degradation rate). In order to achieve a higher degradation rate, the feeding rate of H2O2 should be increased.
采用小型反应器，在连续操作模式下研究了UV/H2O2/US工艺对印染废水中活性染料C.I.活性红120的降解效果。考察了印染废水流量和氧化剂H2O2投加量对该工艺脱色效率的影响。研究了超声波（US）与紫外线照射联合使用的意义，并对该工艺的脱色性能进行了评价。结果表明，脱色过程符合准一级动力学模型，紫外线是染料去除的最重要因素。此外，在较高流量下，由于照射时间相对不足（降解率低），观察到脱色不完全。为了获得更高的降解率，应增加H2O2的投加量。
