CAJ | 학술논문

采用臭氧高级氧化技术对煤气化废水进行了处理，考察各影响因子对其处理效果的影响。实验结果表明：在反应时间为40 min、pH为8.78、臭氧和H2O2投加量分别为126.2、57 mg/L的条件下，废水COD降到44.9 mg/L，去除率达64.42%；色度降到6倍，去除率达99.00%；浊度降到0.34 NTU，去除率达68.81%；B/C由0.04提高到0.34。O3/H2O2技术处理效果优于单独臭氧氧化技术，且最佳pH有所降低。保持H2O2总投量相同，多次投加的去除效果明显优于一次性投加，且逐渐增大的投加方式下COD去除率最高。
채용취양고급양화기술대매기화폐수진행료처리，고찰각영향인자대기처리효과적영향。실험결과표명：재반응시간위40 min、pH위8.78、취양화H2O2투가량분별위126.2、57 mg/L적조건하，폐수COD강도44.9 mg/L，거제솔체64.42%；색도강도6배，거제솔체99.00%；탁도강도0.34 NTU，거제솔체68.81%；B/C유0.04제고도0.34。O3/H2O2기술처리효과우우단독취양양화기술，차최가pH유소강저。보지H2O2총투량상동，다차투가적거제효과명현우우일차성투가，차축점증대적투가방식하COD거제솔최고。
Adv anced ozone oxidation process has been used for treating coal gasification wastewater. The effects of various influencing factors on its treatment effectiveness are investigated. The experimental results show that under the following conditions:reaction time 40 min,pH=8.78,and the ozone and hydrogen peroxide dosage are 126.2 mg/L and 57 mg/L,respectively,the COD is decreased to 44.9 mg/L,the removing rate reaches 64.42%,the chroma is de-creased to 6 times,the removing rate reaches 99%. And the turbidity is decreased to 0.34 NTU,the removing rate reaches 68.81%. Meanwhile,the B/C is increased from 0.04 to 0.34. The treatment effect of O3/H2O2 process is better than that of individual O3 oxidation process. In addition,the optimum pH is decreased. Experimental results demon-strate that with the same total dosage of hydrogen peroxide ,the removing effectiveness obtained by multiple-dosing of hydrogen peroxide is much higher than that obtained by one-time dosing. The highest removing rate of COD is achieved when the dosing amount of the hydrogen peroxide is increased gradually.