【作者】 赵学茂；

【导师】 王建中；

【作者基本信息】 西北师范大学 ， 自然地理学， 2006， 硕士

【摘要】 二氧化氯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橡胶工业废水中催化剂的制备、二氧化氯化学氧化体系与二氧化氯催化氧化体系的经济技术比较，并对橡胶废水的特性和其催化氧化的规律与机理进行了初步探讨。实验结果表明：对COD为769mg/L、TOC为826mg/L的橡胶废水，单纯用二氧化氯化学氧化处理时反应速度很慢且效果差；但在适当的催化剂(催化剂制备条件为：焙烧温度320℃、焙烧时间2h，浸渍液浓度为4％)作用下，反应速度较快，可以显著提高橡胶废水的可生化性到0.5左右，从而为后续的生物处理奠定良好的基础，每吨废水所耗用氧化剂的费用在5.20—6.93元之间；在最佳反应条件下，Cu-Ni-GAC的处理效果优于其它催化剂的处理效果；出于成本的考虑，目前此方法尚不能应用于橡胶废水的彻底氧化处理。研究表明：橡胶废水中含有较多在COD测定条件下仍然无法测出的难降解有机物，它们在催化氧化反应中产生的中间产物造成了废水COD的升高，故不能简单地以COD去除率评价二氧化氯催化氧化处理橡胶废水的效果；二氧化氯催化氧化反应具有自由基反应的特征，可能正是由于自由基的产生加快了反应速度并改变了反应途径，从而使难降解的有机物得以氧化分解。随着研究的不断深入，二氧化氯催化氧化法作为一种新型、高效的难降解废水处理技术，会有更加广阔的应用前景。更多还原

【Abstract】 Chlorine dioxide had been widely used in water treatment field for its fine performance, it is one of the main uses of chlorine dioxide in water treatment to use its strong oxidability to dispose the refractory wastewater.This thesis study mainly on the preparation of catalysts in rubber waste water treatment by chlorine dioxide, the economical and technical comparison of chlorine dioxide chemical oxidation system and catalyzed oxidation system, and having preliminary discussions in the characteristics of rubber waste water and the chlorine dioxide catalytic oxidation reaction course and principles. The experimental result indicated, for the rubber waste water whose COD is 769mg/L and TOC is 826 mg/L, the reaction rate is very slow and the effect is bad when only use chlorine dioxide chemical oxidation to dispose the waster; but under suitable catalyst function (the catalyst preparation conditions: the roasting temperature is 320℃, and the roasting time is 2 hours and the dipping solution density is 4%), The reaction rate is quicker and the biochemical nature of rubber wastewater was enhanced remarkably around 0.5, which lays the good foundation for the following biological treatment, each ton waste water consumes the expense of the oxidant between 5.20 and 6.93 yuans; Under the best response condition, the Cu-Ni-GAC processing effect surpasses the processing effect of other catalysts; stemming from the cost consideration, this kind of method still could not apply to the rubber wastewater thorough oxidized.The research indicated that, the rubber waste water included many refractory organic matter which is unable to be determined under the COD determination condition, the intermediary products which produced in the catalyzed oxidation response have created waste water’s COD elevating, therefore, the effect of chlorine dioxide catalyzed oxidation processing rubber waste water could not simply appraised by the COD removing rate; the chlorine dioxide catalyzed oxidation response has the characteristics of free radical response, possibly because the free radical’s production sped up the reaction rate , changed the response way and enables the refractory organic matter to be oxidized and decomposed.In company with the penetration of researches, as a kind of new and highly effective of processing technology, chlorine dioxide catalytic oxidation method has the broader application prospect.更多还原