| Sludge concentration dynamic distribution and its impact on the performance of UNITANK |
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| 作者姓名： | ZHANG Fa-gen LIU Jun-xin SUI Jun |
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| 作者单位： | [1]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China [2]Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060, China |
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| 摘 要： | UNITANK is a biological wastewater treatment process that combines the advantages of traditional activated sludge process and sequencing batch reactor, which is divided into Tank A, B and C. In this study, the sludge distribution and its impact on performance of UNITANK were carried out in Liede Wastewater Plant （WWTP） of Guangzhou, China. Results showed that there was a strong affiliation between Tank A and B of the system in sludge concentration distribution. The initial sludge concentration in Tank A could present the sludge distribution of the whole system. The sludge distribution was mainly influenced by hydraulic condition. Unsteady sludge distribution had an impact on variations of substrates in reactors, especially in decisive reactor, and this could lead to failure of system. Settler could partially remove substrates such as COD and NO3-N, but there was adventure of sludge deterioration. The rational initial sludge concentration in Tank A should be 4000-6000 mg/L MLSS.
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| 关 键 词： | 泥浆浓度 动力学分布 冲击作用 废水处理 |
| 收稿时间： | 2006-03-03 |
| 修稿时间： | 2006-05-11 |
Sludge concentration dynamic distribution and its impact on the performance of UNITANK |
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| ZHANG Fa-gen,LIU Jun-xin,SUI Jun.Sludge concentration dynamic distribution and its impact on the performance of UNITANK[J].Journal of Environmental Sciences,2007,19(2):141-147. |
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| Authors: | ZHANG Fa-gen LIU Jun-xin and SUI Jun |
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| Institution: | 1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
2. Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060, China |
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| Abstract: | UNITANK is a biological wastewater treatment process that combines the advantages of traditional activated sludge process and sequencing batch reactor, which is divided into Tank A, B and C. In this study, the sludge distribution and its impact on performance of UNITANK were carried out in Liede Wastewater Plant (WWTP) of Guangzhou, China. Results showed that there was a strong affiliation between Tank A and B of the system in sludge concentration distribution. The initial sludge concentration in Tank A could present the sludge distribution of the whole system. The sludge distribution was mainly influenced by hydraulic condition. Unsteady sludge distribution had an impact on variations of substrates in reactors, especially in decisive reactor, and this could lead to failure of system. Settler could partially remove substrates such as COD and NO3-N, but there was adventure of sludge deterioration. The rational initial sludge concentration in Tank A should be 4000-6000 mg/L MLSS. |
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| Keywords: | UNITANK sludge concentration dynamic distribution in-process study UNITANK performance impact concentration distribution dynamic MLSS rational adventure deterioration remove lead failure especially reactor Unsteady variations substrates condition initial present |
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