CAJ | 학술논문

为探寻去除造纸法再造烟叶废水中有机污染物的有效途径，采用臭氧氧化法预处理造纸法再造烟叶废水二级生物处理出水，考察了pH、反应温度、反应时间、臭氧浓度和废水初始CODCr浓度对废水预处理效果的影响。结果表明：①在pH 8.0、反应温度30℃、臭氧浓度36.60 mg/L、废水初始CODCr浓度641 mg/L条件下，经臭氧氧化90 min后废水CODCr去除率达到77.36％；②臭氧能有效降解废水中的羰基、羟基等发色、助色基团，可使废水的色度去除率达到99％。③臭氧氧化处理废水60 min后，废水的BOD5/CODCr由0.46升至0.72，表明废水的可生化性明显提高，有利于后续的生物处理工艺对废水中有机污染物的降解。
위탐심거제조지법재조연협폐수중유궤오염물적유효도경，채용취양양화법예처리조지법재조연협폐수이급생물처리출수，고찰료pH、반응온도、반응시간、취양농도화폐수초시CODCr농도대폐수예처리효과적영향。결과표명：①재pH 8.0、반응온도30℃、취양농도36.60 mg/L、폐수초시CODCr농도641 mg/L조건하，경취양양화90 min후폐수CODCr거제솔체도77.36％；②취양능유효강해폐수중적탄기、간기등발색、조색기단，가사폐수적색도거제솔체도99％。③취양양화처리폐수60 min후，폐수적BOD5/CODCr유0.46승지0.72，표명폐수적가생화성명현제고，유리우후속적생물처리공예대폐수중유궤오염물적강해。
In order to explore an effective means for eliminating organic pollutants in wastewater from paper-making process reconstituted tobacco (RT) production, an ozone oxidation method was used for pretreating the water discharged from secondary biological treatment of wastewater from RT production, and the influences of pH, temperature, reaction time, ozone concentration and initial CODCr of wastewater on the pretreatment effect were investigated. The results showed that: 1) The CODCr removal rate of wastewater reached 77.36% at the conditions of pH 8.0, temperature 30 ℃, ozone concentration 36.60 mg/L, initial CODCr of wastewater 641 mg/L and reaction time 90 minutes. 2) Ozone treatment effectively degraded the chromophore and auxochrome, such as carbonyl and hydroxyl groups, in wastewater, and the chroma removal rate of wastewater reached 99%. 3) The BOD5/CODCr in wastewater increased from 0.46 to 0.72 after ozone oxidation for 60 minutes, which indicated that the biodegradability of wastewater was significantly improved; it was helpful to the degradation of organic pollutants in wastewater by subsequent biological treatments.