废水处理中高级氧化技术的应用研究

Research on the Application of Advanced Oxidation Technology in Waste Water Treatment

本研究分析了高级氧化技术的特征及其应用范围,分别对电化学氧化技术、化学研发技术、超临界水氧化技术等的原理及应用前景进行了分析和阐述。皮革工业产生的废水中经常存在大量难以降解的有机物,采用常规的好氧生化技术处理时,处理效率低且效果差。经实验研究发现,在高级氧化技术作用下,废水经过超声波紫外线处理半小时后,能够显著提升后续生化反应速率,经8 h和24 h后COD去除率可达到经微生物处理48 h处理48%的效果,继续延长反应时间至48 h,其对废水中COD的去除率无明显提升。采用Fenton试剂强化超声波紫外线处理后,其效果要高于单独采用超声波及紫外线处理技术,预处理半小时后,在微生物条件下分别反应4 h和8 h,废水中COD的去除率可达到45%和51%,延长反应时间能够明显提升废水中COD的去除率,经过48 h反应之后,COD去除率分别能够提升64%及72%。

This study analyzes the characteristics of advanced oxidation technology and the application scope of the technology,respectively for electrochemical oxidation technology,chemical research and development technology,supercritical water oxidation technology,principle analysis and application prospects.Industrial leather wastewater often exist a large number of diffi cult to degrade organic matter,using conventional aerobic biochemical technology,the treatment effi ciency is low,the treatment effect is poor,through experimental research,based on advanced oxidation technology,wastewater after ultrasonic ultraviolet treatment,can significantly improve the subsequent biochemical reaction rate,after 8 hours and 24 hours COD removal rate can achieve 48 hours by microbial treatment 48%effect,continue to extend the reaction time to 48 hours,the COD removal rate in wastewater.Using Fenton reagent strengthening ultrasonic ultraviolet treatment,its effect is higher than separate ultrasonic and ultraviolet treatment technology,half an hour after pretreatment,under the microbial conditions reaction 4 hours and 8 hours,COD removal rate in wastewater can reach 45%and 51%,prolong the reaction time can signifi cantly improve the COD in wastewater,after 48 hours of reaction,COD removal rate can increase 64%and 72%,respectively.