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首页> 外文会议>Global Symposium on Recycling, Waste Treatment and Clean Technology; 20040926-29; Madrid(ES) >PHOTOCATALYTIC DECOLOURATION OF TEXTILE DYES WASTEWATERS IN AN EXPERIMENTAL SOLAR PILOT PLANT
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PHOTOCATALYTIC DECOLOURATION OF TEXTILE DYES WASTEWATERS IN AN EXPERIMENTAL SOLAR PILOT PLANT

机译：实验性太阳能试点工厂中纺织品染料废水的光催化脱色

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摘要

Chemicals dyes from the textile industry are a significant source of aquatic environmental pollution. Therefore, such industrial effluents must be treated before their release into the aqueous media. The photocatalytic removal of colour of a synthetic textile effluent, using TiO_2 suspensions under solar radiation, has been studied at pilot plant scale. A synthetic dye solution was prepared by a mix of six commercials textile dyes. A photochemical reactor of parallel CPC reflectors with UV-transparent tubular receivers was used. The study of photodegradation was carried out using the Taguchi's Parameter Design method. Following this methodology, the reaction was conducted under different flow conditions, pH and H_2O_2 concentrations. The results show that all dyes used in the experiences can be degraded successfully by photo-oxidation. The process shows a significant enhancement when it is carried out at high flows, alkaline media and high H_2O_2 concentration. Colour removal from the effluent was reached at 23 minutes operating time.
机译：纺织工业中的化学染料是水生环境污染的重要来源。因此，必须先处理此类工业废水，然后将其释放到水性介质中。在中试规模上，已经研究了使用TiO_2悬浮液在太阳辐射下光催化去除合成纺织废水的颜色。合成染料溶液是由六种商业纺织品染料的混合物制备的。使用具有紫外线透明管状接收器的平行CPC反射器的光化学反应器。使用田口的参数设计方法进行了光降解的研究。按照该方法，反应在不同的流动条件，pH和H_2O_2浓度下进行。结果表明，经验中使用的所有染料均可通过光氧化成功降解。当在高流量，碱性介质和高H_2O_2浓度下进行时，该过程显示出显着增强。在23分钟的操作时间就可以从废水中去除颜色。

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