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首页> 外文会议>Global Symposium on Recycling, Waste Treatment and Clean Technology; 20040926-29; Madrid(ES) >DISCOLORATION OF WASTEWATER FROM TEXTILE INDUSTRY IN THE PRESENCE OF METALLIC IRON
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DISCOLORATION OF WASTEWATER FROM TEXTILE INDUSTRY IN THE PRESENCE OF METALLIC IRON

机译：金属铁存在下纺织工业废水的脱色

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摘要

Azo-dyes that are characterized by the presence of the -N=N- azo-linkage, comprise around half of all textile colorants used today. They are required to exhibit a high degree of chemical, photolytic and microbiological stability in order to fulfill the fastness requirements of customers. Consequently, dyes do not readily degrade under typical usage conditions, not even under aerobic conditions prevailing in the conventional biological treatment processes. Wastewater treatment facilities that received azo-dyes have shown to be unable to meet color standards. It is of strong interest to develop fast, efficient, economical and environmentally friendly technology for removing dyes from wastewater. The carried out fundamental studies shown that the application of iron type catalysts could be the efficient and low cost solution. The performed studies were concentrated on decomposition kinetics of the most typical industrial dyes in different conditions: solution concentration, pH, reduction/oxidation potential. Degradation mechanisms of different dyes were also investigated.
机译：以-N = N-偶氮键为特征的偶氮染料约占当今使用的所有纺织品着色剂的一半。为了满足客户对色牢度的要求，它们必须表现出高度的化学，光解和微生物稳定性。因此，在常规使用条件下，即使在常规生物处理工艺中普遍存在的需氧条件下，染料也不容易降解。已显示使用偶氮染料的废水处理设施无法达到颜色标准。开发快速，高效，经济和环境友好的技术以去除废水中的染料具有浓厚的兴趣。进行的基础研究表明，铁型催化剂的应用可能是一种高效，低成本的解决方案。进行的研究集中于最典型的工业染料在不同条件下的分解动力学：溶液浓度，pH，还原/氧化电位。还研究了不同染料的降解机理。

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