| Effects of Low- Intensity Ultrasound Treatment on Excess Sludge |
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| 作者姓名： | DING Wen - Chuan LONG Teng - Rui XU Long LI Li LIAN He - chuan |
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| 作者单位： | 1. Key Laboratory for Three Gorges Reservoir Areal Ecology and Environment, Ministry of Education, Chongqing 400045, P. R. China; 2 Chongqing Drainage Company, Chongqing 401120, P. R. China |
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| 摘 要： | In this study the influence of the low-intensity ultrasound treatment on excess sludge has been observed.The oxygen uptake rate(OUR),soluble chemical oxygen demand(SCOD),soluble total nitrogen(TN) and soluble total phosphorus(TP) were examined for three power levels of 0.03 W/mL, 0.05 W/mL and 0.1 W/mL as well as two time series of 0~5 min and 0~30 min.It showed that there were two stages of ultrasonic treatment: the first stage took place within the flocs in four minutes,in which SCOD,TN,TP were dissolved from flocs.In the second stage,the microbial activities have been strengthened,as well as OUR,TN,TP have increased greatly.
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| 关 键 词： | low-intensity ultrasound excess sludge microbial activity |
| 收稿时间： | 2006/1/25 0:00:00 |
| 修稿时间： | 2006/1/25 0:00:00 |
Effects of Low- Intensity Ultrasound Treatment on Excess Sludge |
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| DING Wen - Chuan,LONG Teng - Rui,XU Long,LI Li,LIAN He - chuan.Effects of Low- Intensity Ultrasound Treatment on Excess Sludge[J].Storage & Process,2006(3):74-77. |
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| Authors: | DING Wen - Chuan LONG Teng - Rui XU Long LI Li LIAN He - chuan |
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| Institution: | 1. Key Laboratory for Three Gorges Reservoir Areal Ecology and Environment, Ministry of Education, Chongqing 400045, P. R. China; 2 Chongqing Drainage Company, Chongqing 401120, P. R. China |
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| Abstract: | In this study the influence of the low-intensity ultrasound treatment on excess sludge has been observed.The oxygen uptake rate(OUR),soluble chemical oxygen demand(SCOD),soluble total nitrogen(TN) and soluble total phosphorus(TP) were examined for three power levels of 0.03 W/mL, 0.05 W/mL and 0.1 W/mL as well as two time series of 0~5 min and 0~30 min.It showed that there were two stages of ultrasonic treatment: the first stage took place within the flocs in four minutes,in which SCOD,TN,TP were dissolved from flocs.In the second stage,the microbial activities have been strengthened,as well as OUR,TN,TP have increased greatly. |
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| Keywords: | low-intensity ultrasound excess sludge microbial activity |
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