摘要
剩余污泥的处理与处置是我国和世界面临的重要环境课题。文章初步研究了臭氧、超声波及其组合工艺对剩余污泥的破解作用,考察了反应时间、臭氧流量、超声功率对污泥破解效果的影响。研究表明:臭氧流量为7 L/min时破解效果最好,反应40 min,SCOD、NH3-N、TN和TP分别比反应前提高了586%、178%、522%和1781%;超声功率为800 W时破解效果最好,反应40 min,SCOD、NH3-N、TN和TP分别比反应前提高了812%、404%、286%和682%;在超声波-臭氧联合作用下,臭氧流量7 L/min、超声功率800 W下反应40 min,SCOD、NH3-N、TN和TP分别比反应前提高了925%、208%、815%和1946%。结果表明,超声波能强化臭氧对污泥破解的效果。
Excess sludge treatment and disposal is an important environmental issue at home and abroad.Disruption of excess sludge by ultrasound and ozone was investigated.Influence of different parameters was discussed including reaction time,ozone flux and ultrasonic power.Results indicated that when the ozone flux was 7 L/min,the efficiency of disruption was the best during ozonation along with SCOD,NH3-N,TN and TP at 40 min contact increasing by 586%,178%,522% and 1,781% respectively.When ultrasound was 800 W,the efficiency of disruption was the best under the effect of ultrasound along with its SCOD,NH3-N,TN and TP increasing by 812%,404%,286% and 682% respectively.Its SCOD,NH3-N,TN and TP increased by 925%,208%,815% and 1,946% at 40 min contact under their combined effect.Ultrasound can enhance the reaction in ozonation.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第6期141-143,200,共4页
Environmental Science & Technology
基金
东华大学纤维材料改性国家重点实验室开放课题基金资助(LK0807)
关键词
剩余污泥
破解效果
臭氧
超声波
excess sludge
efficiency of disruption
ozone
ultrasound
