氧化絮凝复合床降解废水中染料的最优化工艺

Studies on the Optimal Technique for the treatment of Dyes in Wastewater with the Oxido Flocculation Reactor(OFR)

应用氧化絮凝复合床技术处理含酸性湖蓝、酸性黑和活性艳红等染料的废水 ,系统地研究了催化剂种类、填料颗粒粒度、槽电压、电极间距离、压缩空气流量、处理时间以及试样的浓度、酸度、电导率等主要的物理化学因素对脱色效果的影响 ,找到了相关的影响规律 ,确定了最佳的物理化学条件 首次采用以电能为激发能、利用体系内产生的羟基自由基处理印染废水和染料废水的新方法 ,不单为实现氧化絮凝复合床技术处理含这类污染物的废水提供了理论依据 。

OFR system was applied to the treatment of dyes in wastewater by electrogenerated hydroxyl radical (·OH). In the paper, three dyes: acid turquoise blue, acid black and reactive brilliant red were selected for basic studies on the efficiency of the system. Various physical or chemical factors affecting decolor rate have been investigated, including: type of catalyst, filler size, cell voltage, interelectrode distance, air flow rate, treating time ,the concentration, pH and conductivity of testing solution etc. .At last, the optimal treating condition has been found out. The dye removal from wastewater under the optimal treating conditions was >99%. The method showed superior to adsorption, flocculation, biochemistry and general electrochemistry methods. This study can provide a reliable theoretical basis on the OFR technique for wastewater treatments but also widen its application fields.