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| 城市污水处理厂活性污泥系统仙女虫的产生与防治 | |
| 引用本文： | 万琼,安少锋,鲁海峰,邵军锋,彭党聪.城市污水处理厂活性污泥系统仙女虫的产生与防治[J].中国给水排水,2011,27(15). |
| 作者姓名： | 万琼 安少锋 鲁海峰 邵军锋 彭党聪 |
| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院,陕西,西安,710055;西安科技大学建筑与土木工程学院,陕西,西安,710054 2. 西安建筑科技大学环境与市政工程学院,陕西,西安,710055 3. 西安市污水处理有限责任公司,陕西,西安,710018 |
| 基金项目： | 国家水体污染控制与治理科技重大专项 |
| 摘 要： | 针对某城市污水处理厂活性污泥系统中产生的仙女虫进行防治对策研究.由于仙女虫的吞噬作用使得活性污泥的絮体结构遭到破坏,造成二沉池表面出现浮泥,出水悬浮物浓度高达116 mg/L,生物反应池内污泥浓度大幅降低,对COD、氮和磷的去除效率下降.采用排除二沉池表面的浮泥、减小污泥龄、降低曝气池中的溶解氧浓度和添加初沉池污泥等措施后,仙女虫消失,污泥浓度逐渐增加到2 252 mg/L,出水SS降低至20 mg/L以下,系统恢复正常.通过投加初沉池污泥以提高有机负荷是防治仙女虫的有效途径. |
| 关 键 词： | A2/O工艺 仙女虫 污泥龄 污泥浓度 |
Production, Prevention and Cure of Nais elinguis in Activated Sludge System of WWTP |
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| WAN Qiong,AN Shao-feng,LU Hai-feng,SHAO Jun-feng,PENG Dang-cong.Production, Prevention and Cure of Nais elinguis in Activated Sludge System of WWTP[J].China Water & Wastewater,2011,27(15). | |
| Authors: | WAN Qiong AN Shao-feng LU Hai-feng SHAO Jun-feng PENG Dang-cong |
| Affiliation: | WAN Qiong1,2,AN Shao-feng1,LU Hai-feng3,SHAO Jun-feng1,PENG Dang-cong1(1.School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China,2.College of Architecture and Civil Engineering,Xi'an University of Science and Technology,Xi'an 710054,3.Xi'an Wastewater Treatment Co.Ltd.,Xi'an 710018,China) |
| Abstract: | The countermeasures for prevention and cure of Nais elinguis in activated sludge system of a WWTP were studied.The phagocytosis of Nais elinguis destroys the floc structure,so floating sludge appears on the surface of secondary sedimentation tank,the SS in the effluent are 116 mg/L,the MLSS are sharply reduced,and the removal rates of COD,N and P are decreased.Some measures are taken,including removing the floating sludge in secondary sedimentation tank,shorting SRT,reducing concentration of DO in aeration ... |
| Keywords: | A2/O process Nais elinguis sludge retention time(SRT) MLSS |
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