| 简析超声波声能密度对污泥减量的影响 |
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| 引用本文： | 杨艳,冯晓西.简析超声波声能密度对污泥减量的影响[J].能源环境保护,2007,21(4):43-44. |
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| 作者姓名： | 杨艳 冯晓西 |
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| 作者单位： | 华东理工大学资源与环境工程学院,上海,200237 |
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| 摘 要： | 介绍了超声波用于污泥减量的机理,研究了超声波声能密度对污泥减量的影响.研究表明当超声波频率为200 KHz,声能密度1.1W/mL,t=300 s,MISS减少率max=28.3%;SCOD从30 mg/L上升到110 mg/L.在声能密度0.22 W/mL时,t=450 s,MISS减少率max=12.8%;SCOD从30 mg/L上升到85 mg/L.另外,试验中还发现大功率超声波不利于提高污泥的脱水能力.
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| 关 键 词： | 超声波 污泥 减量 声能密度 频率 功率超声波 声能密度 污泥减量 影响 ULTRASOUND EFFECTION SLUDGE REDUCTION DENSITY 能力 脱水 发现 试验 SCOD 减少率 MISS 声波频率 研究 机理 |
| 文章编号： | 1006-8759（2007）04-0043-02 |
| 收稿时间： | 2007-03-09 |
| 修稿时间： | 2007-03-09 |
THE EFFECTION OF ULTRASOUND'S POWER DENSITY ON SLUDGE REDUCTION |
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| YANG Yan,FENG Xiao-xi.THE EFFECTION OF ULTRASOUND''''S POWER DENSITY ON SLUDGE REDUCTION[J].Energy Environmental Protection,2007,21(4):43-44. |
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| Authors: | YANG Yan FENG Xiao-xi |
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| Institution: | College of Resources and Environment Engineering, ECUST, Shanghai 200237, China |
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| Abstract: | Introduction the mechanism of ultrasound to sludge reduction,and the effection on sludge reduction of ultrasound power density is studied;The resulsts show that,when the ultrasound's frequency is 200 KHz,t=300 s,at a power density of 1.1W/mL,MLSS biggest reduction degree is 28.3%;SCOD increased from 30 mg/L to 110mg/L.but when it's at 0.22W/mL,the biggest cut degree is 12.8% and the time is 450 s;SCOD increased from 30 mg/L to 80 mg/L.besides,the big power ultrasound has an disadvantage in proving sludge dewatering ability. |
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| Keywords: | ultrasound sludge reduction power density frequency |
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