| 超声波协同臭氧处理剩余污泥 |
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| 引用本文： | 罗庆,王小雄,张媛,韦清华,王树勖,文善雄,牛进龙,李常青,刘发强.超声波协同臭氧处理剩余污泥[J].石化技术与应用,2022,0(5):355-358. |
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| 作者姓名： | 罗庆 王小雄 张媛 韦清华 王树勖 文善雄 牛进龙 李常青 刘发强 |
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| 作者单位： | 中国石油石油化工研究院 兰州化工研究中心，甘肃 兰州 730060 |
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| 摘 要： | 采用超声波协同臭氧工艺进行剩余污泥溶胞减量，考察了工艺条件对污泥减量效果的影响，并分析了处理过程中污泥性质的变化情况。结果表明:采用超声波和臭氧同时作用工艺，在超声波频率为20 kHz，声能密度为0.5 W/mL，臭氧投加速率为100 mg/min，反应时间为60 min的最佳条件下，污泥减量率达到40.11%，并且污泥粒径由处理前的29.76 μm降至处理后的10.01 μm，沉降比由0.93降至0.11，溶解性化学需氧量、总氮、总磷质量浓度依次由45，8，0.20 mg/L上升至1 242，129，12.41 mg/L，挥发性悬浮固体物与总悬浮固体物质量浓度比则由0.79降至0.63。
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| 关 键 词： | 剩余污泥 超声波 臭氧 溶胞减量 声能密度 化学需氧量 沉降比 |
Treatment of excess sludge by ultrasonic and ozone synergy |
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| LUO Qing,WANG Xiao-xiong,ZHANG Yuan,WEI Qing-hua,WANG Shu-xu,WEN Shan-xiong,NIU Jin-long,LI Chang-qing,LIU Fa-qiang.Treatment of excess sludge by ultrasonic and ozone synergy[J].Petrochemical Technology & Application,2022,0(5):355-358. |
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| Authors: | LUO Qing WANG Xiao-xiong ZHANG Yuan WEI Qing-hua WANG Shu-xu WEN Shan-xiong NIU Jin-long LI Chang-qing LIU Fa-qiang |
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| Affiliation: | Lanzhou Petrochemical Research Center，Petrochemical Research Institute，PetroChina，Lanzhou 730060，China |
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| Abstract: | The effects of process conditions on excess sludge reduction effect were investigated and the variation on properties of the sludge were analyzed during treatment by ultrasonic and ozone synergy to reduce excess sludge dissolved cells.The results showed that adopting ultrasonic and ozone synergy simultaneously，under the optimum conditions of ultrasonic frequency of 20 kHz，sound energy density of 0.5 W/mL，ozone adding rate of 100 mg/min and reaction time of 60 min，the reduction rate of excess sludge reached 40.11%，sludge particle size decreased from 29.76 μm to 10.01 μm，sludge sedimentation ratio decreased from 0.93 to 0.11，the mass concentrations of ion dissolved chemical oxygen demand，total nitrogen and total phosphorus increased from 45，8，0.20 mg/L to 1 242，129，12.41 mg/L respectively，and the proportion of the mass concentrations of volatile suspended solids to the total suspended solids in sludge decreased from 0.79 to 0.63. |
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| Keywords: | excess sludge ultrasonic ozone lysis reduction sound energy density chemical oxygen demand sedimentation ratio |
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