摘要
通过研究曝气盘孔径对泡沫性能、泡沫量及有机质降解的影响,了解曝气法臭氧氧化处理高含量烷基多苷废水的规律。结果表明:随着曝气盘孔径的减小,产生的泡沫的粒径、发泡比逐渐减小,泡沫的持液量、泡沫半衰期逐渐增大;臭氧的通入量为28 g时,产生的泡沫总量、消耗单位臭氧降解的COD值、COD的降解率均随曝气盘孔径的减小而增大;采用孔径150和40μm的曝气盘组合式处理工艺与单纯孔径150μm的曝气盘处理工艺比较,COD降解率提高了6.8百分点,每克臭氧降解的COD值提高了54.5 mg,臭氧的利用率显著提高,而产生的泡沫总量较采用孔径80μm的曝气盘减少了约2/3。
Aeration process for treatment of waste water containing high content of alkyl polyglucosides was investigated via study of effect of aeration diffuser disc aperture on foam performance, foam volume generated and organic matter degradation. Results showed that, following the reducing of the aeration diffuser disc aperture, bubble size of the foam and the foaming ratio gradually decreases;while the totalliquid hold and half- life of the foam gradually increases. When the ozone introduced achieves 28 g, the total foam volume generated, the degradation level of COD of per gram ozone consumed and the degree of degradation of COD increases following the reducing of aeration diffuser disc aperture, Performance of combination of aeration diffuser discs with 150 and 40 μm apertures was compared with that of single 150μm,the COD degradation of the former is 6. 8 percent points higher than that of the latter, and COD degraded by one gram of ozone increases 54.5 rag. The utilization efficiency of ozone increases remarkably. Further, total foam volume generated by the combined aeration diffuser discs reduces by 2/3 as compared with that of single aeration diffuser disc with aperture of 80 μm.
出处
《日用化学工业》
CAS
CSCD
北大核心
2014年第2期83-86,114,共5页
China Surfactant Detergent & Cosmetics
关键词
烷基多苷
曝气法
臭氧氧化
废水
alkyl polyglucosides
aeration process
ozonation
waste water
