摘要
在采用高负荷活性污泥法处理高浓度污水的工艺中引入超声波辐射活性污泥的预处理单元,考察了低强度超声波辐射对污泥活性及其降解有机物的影响。结果表明,活性污泥经21 kHz、20 W的低强度超声波辐射10 min后,其活性得到了提高,对有机物的降解效率也有所提高。本试验所采用的低强度超声波辐射活性污泥的预处理方法,在提高污泥活性及其对有机物降解效率的同时也降低了能耗。
Ultrasonically irradiated activated sludge pretreatment unit was introduced in the high organic loading activated sludge process for high concentration wastewater treatment, and the effect of low-intensity ultrasonic irradiation on the sludge activity and organic degradation was investigated. The results show that when the activated sludge is irradiated by ultrasound at a for 10 min, its activity is enhanced and the efficiency of organic degrada frequency of 21 kHz with 20 W tion is increased. The pretreatment method of low-intensity ultrasonic irradiating the activated sludge can improve the sludge activity and the organic degradation efficiency, and save the energy consumption.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第13期76-78,82,共4页
China Water & Wastewater
基金
国家"十五"科技攻关课题(2004BA604AOT)
关键词
低强度超声波
辐射
活性污泥
高浓度污水
wastewater low-intensity ultrasound
irradiation
activated sludge
high concentration
