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首页> 外文期刊>Desalination and water treatment >Reducing both CAPEX and OPEX thanks to CFD at Gabal-el-Asfar WWTP: hydraulic optimization of flow distribution to clarifiers and sedimentation tanks
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Reducing both CAPEX and OPEX thanks to CFD at Gabal-el-Asfar WWTP: hydraulic optimization of flow distribution to clarifiers and sedimentation tanks

机译：通过Gabal-el-Asfar污水处理厂的CFD降低了CAPEX和OPEX：水力优化了澄清池和沉淀池的流量分配

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Acciona Agua is currently building Gabal-el-Asfar wastewater treatment plant (WWTP) which is designed to process waste water from El Cairo, Egypt. As a main advantage, computational fluid dynamic tools (CFD) can evaluate hydraulics in 3 dimensions (3D) previous to any construction. Commercial software utilized by the R& D department of Acciona Agua was used to predict and then optimize flow performance for diverse plant elements early in the engineering process, during the detail design period. On one hand, one element susceptible to be enhanced while reducing construction capital costs was identified. On the other hand, equipment that could present hydraulic performance issues during operation was also recognized. A novel approach using CFD techniques could help solve foreseen issues in both cases. Executed simulations allowed depth minimization of the distribution chamber to the final clarifiers, while maintaining flow supply variation within +/- 5% of the expected value. Also, simulations anticipated flow performance of the distribution chamber to the primary sedimentation tanks. A corrective action such as placement of baffle columns helped flow homogenization and induced proper water flow distribution to each sedimentation tank, with +/- 1.5% deviation from the average. As a conclusion, CFD proved to be an effective tool that provided vital information for hydraulic optimization and consequent cost reduction of Gabal-el-Asfar WWTP.
机译：Acciona Agua目前正在建造加巴尔-阿斯法尔废水处理厂（WWTP），该厂旨在处理埃及El Cairo的废水。作为主要优点，计算流体动力工具（CFD）可以在进行任何构造之前以3维（3D）评估液压。 Acciona Agua研发部门使用的商业软件用于在详细设计阶段的工程过程早期，预测并优化各种工厂要素的流量性能。一方面，确定了在降低建筑资本成本的同时易于增强的要素。另一方面，也认识到在操作过程中可能出现液压性能问题的设备。使用CFD技术的新颖方法可以帮助解决这两种情况下的可预见问题。执行的模拟允许将分配室的深度降至最终澄清池，同时将流量供应变化保持在预期值的+/- 5％之内。此外，模拟还预测了分配室到主要沉淀池的流动性能。诸如放置折流板柱之类的纠正措施有助于流量均质化，并导致向每个沉淀池的水流分配正确，与平均值有+/- 1.5％的偏差。总之，CFD被证明是一种有效的工具，可为Gabal-el-Asfar污水处理厂的水力优化和由此降低的成本提供重要信息。

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