| 同步进出水SBR设备最佳进水方式流态模拟 |
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| 引用本文： | 庞纪元, 吴俊奇, 宋永会, 向连城, 李剑屏, 刘佳, 王思宇. 同步进出水SBR设备最佳进水方式流态模拟[J]. 环境工程学报, 2015, 9(8): 3650-3658. doi: 10.12030/j.cjee.20150811 |
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| 作者姓名： | 庞纪元 吴俊奇 宋永会 向连城 李剑屏 刘佳 王思宇 |
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| 作者单位： | 1. 中国环境科学研究院城市水环境科技创新基地, 北京 100012; 2. 北京建筑大学环境与能源工程学院, 北京 100044; 3. 国电东北环保产业集团有限公司, 沈阳 110014 |
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| 基金项目： | 国家"水体污染控制与治理"科技重大专项(2012ZX7202-003,2012ZX7202-005) |
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| 摘 要： | 借助流体计算软件Fluent对某同步进出水SBR设备4种不同进水位置以及3种进水孔排布分别进行流态模拟,根据模拟结果得到最佳的进水方式;同时在该进水方式下对进水流量为0.5、0.7、1.0、1.3和1.5 m3/h时反应器内的流态分布情况进行了数值模拟,最后通过示踪剂实验与模拟结果对比验证。对于实验用SBR(长×宽×高为2 m×2 m×1.2 m),进水流量1.0 m3/h是最佳进水流量,此时反应器内流态稳定,进水区域主要分布于反应器中下部以及远离堰口的池壁附近,死水区面积较小,冲击负荷适中,进水对出水水质影响较小;当进水流量小于1.0 m3/h时,进水主要分布于反应器池底,对角线方向以及远离进水端池壁附近3个区域且彼此相对独立,池内死水区面积较大;当进水流量大于1.0 m3/h时,进水冲击负荷过大,迅速形成短流,影响出水水质。
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| 关 键 词： | 同步进出水SBR 流态 数值模拟 k-ε模型 示踪实验 |
| 收稿时间： | 2015-04-20 |
Simulation of the best inlet flow pattern for synchronization in-out SBR |
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| Pang Jiyuan, Wu Junqi, Song Yonghui, Xiang Liancheng, Li Jianping, Liu Jia, Wang Siyu. Simulation of the best inlet flow pattern for synchronization in-out SBR[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3650-3658. doi: 10.12030/j.cjee.20150811 |
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| Authors: | Pang Jiyuan Wu Junqi Song Yonghui Xiang Liancheng Li Jianping Liu Jia Wang Siyu |
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| Affiliation: | 1. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 3. The Environmental Protection Industrial Group Limited Company, China Electricpower Corporation, Shenyang 110014, China |
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| Abstract: | Four kinds of influent location and three kinds of water feeding holes arrangements of synchronous in-out SBR equipment were simulated with Fluent software respectively in order to obtain the best water feeding pattern. Then proceed numerical simulation of flow distribution in the reactor under the best feeding pattern with the influent flow of 0.5,0.7,1.0,1.3,1.5 m3/h. Finally,we compared the results of tracer experiment with numerical simulation, the result shows that the optimal water feeding flow is 1.0 m3/h for the SBR used in experiment (l×w×h of 2 m×2 m×1.2 m ). Under this condition, the flow pattern in the reactor is stable and the influent water areas are mainly distributed in the lower-middle part of the reactor and near the pool wall far from the crest of the weir. The dead water area is smaller, the impact load is moderate and influent has less effect on effluent quality. When the feeding flow is less than 1.0 m3/h, the influent is mainly distributed at the bottom of the reactor, diagonal direction and near the pool wall far from the crest, moreover, they are relatively dependent from each other .The dead water area is larger. When the feeding flow is more than 1.0 m3/h, the impact load of influent is too high and short current is created quickly which have effects on effluent quality. |
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| Keywords: | synchronization in-out SBR inlet flow pattern numerical simulation k-ε model tracer experiment |
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