【作者】 王琼；

【导师】 贺启环；

【作者基本信息】 南京理工大学 ， 环境工程， 2004， 硕士

【摘要】 二氧化氯作为一种水处理药剂因其优良的性能已被广泛的应用于水处理领域，利用二氧化氯的强氧化性处理难降解废水是其在水处理中的主要用途之一。 本论文主要研究了二氧化氯催化氧化处理难降解废水技术中催化剂的制备，筛选了两种催化剂载体和两种活性组分，分别对直接大红4B染料废水和酸性大红GR染料废水的二氧化氯化学氧化体系和二氧化氯催化氧化体系进行了经济技术比较。实验结果表明，本阶段主要研究的2#催化剂制备最优条件为：催化剂焙烧温度500℃～550℃、焙烧时间5h，浸渍液浓度为4％。单纯二氧化氯化学氧化处理COD为3500mg/L的直接大红4B染料废水时，COD去除率可达85％以上，去除每公斤COD的药剂费用为1.78元；催化氧化处理直接大红4B染料废水的COD去除率达到96％以上，药剂费用在2.30元左右。单纯二氧化氯化学氧化处理COD为3500mg/L的酸性红GR染料废水时，COD去除率可达50％，去除每公斤COD的药剂费用为7.65元；催化氧化处理酸性红GR染料废水的COD去除率达到80％以上，药剂费用在3.50元左右。 此外，本论文对催化剂寿命、再生方法与二氧化氯催化氧化机理进行了初步的研究，研究表明二氧化氯催化氧化法是一种新型高效的处理难降解废水的技术，有着广阔的应用前景。更多还原

【Abstract】 As a kind of water treatment medicament, chlorine dioxide (ClO2) is wildly used in water treatment field because of its excellent functions. Utilizing its strong oxidizability to treat refractory wastewater is one of the primary uses of ClO2 in water treatment.The preparation of catalyst of ClO2 catalytic oxidation, ClO2 chemical oxidation system and ClO2 catalytic oxidation system of Acid Brilliant Scarlet GR and Direct Scarlet were studied in this paper and also optimized two catalyst carriers and two kinds of catalyst carrier. The results showed that 4% dip-liquid , 300℃~350℃ and 2 hours of calcinations were the best preparation conditions for catalysts 2#. The COD removal ratio exceeded 85%, the cost of oxidant removing 1kg COD was 1.78, when treating Direct Scarlet dyestuf f wastewater, the COD of which was 3500mg/L, by ClO2 chemical oxidation; by ClO2 catalytic oxidation the COD removal ratio exceeded 96%, the cost of oxidant removing lkg COD was about ?. 30. The COD removal ratio exceeded 50%, the cost of oxidant removing lkg COD was ?. 65, when treating Direct Scarlet dyestuff wastewater, the COD of which was 3500mg/L, by ClO2 chemical oxidation; by ClO2 catalytic oxidation the COD removal ratio exceeded 80%, the cost of oxidant removing 1kg COD was 3.72.Catalyst life, catalyst recovery and mechanism of ClO2 catalytic oxidation were elementarily developed. The study illuminated that ClO2 catalytic oxidation was an efficient method to treat refractory wastewater and it had a broad prospect.更多还原