Optimization of water treatment plant flow distribution with CFD modeling of an influent channel

IF 2 Q3 Environmental Science

Water Quality Research Journal of Canada Pub Date : 2015-02-01 DOI:10.2166/WQRJC.2014.024

Carrie L. Knatz, S. Rafferty, Anthony Delescinskis

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引用次数: 9

Abstract

In the design of water and wastewater treatment plants, proper flow and solids distribution can be as critical as process design considerations. Insufficient treatment and even plant failures can result from unequal and unmanageable flow and solids distribution. Computational fluid dynamics (CFD) modeling is a valuable tool in the evaluation of flow distribution to multiple units within a treatment process. This article reviews the benefits achieved by performing a CFD analysis of an Infilco high-rate dissolved air flotation (DAF) influent channel prior to finalizing the design of the plant. The CFD model was used to optimize the DAF influent channel configuration with respect to flow distribution to 10 identical process units that were inserted into an existing facility footprint. For the initial configurations modeled, the largest deviation of flow rate to an individual DAF unit was over 60%. Using CFD, design engineers developed a DAF influent channel configuration predicted to achieve less than 10% deviation. The upgraded facility is constructed and in service and the results of the CFD model were confirmed using actual turbidity data, which indicate that the solids are evenly distributed to the DAF process trains.

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基于CFD的水厂进水道流场优化

在水和废水处理厂的设计中，适当的流量和固体分布与工艺设计一样重要。不充分的处理，甚至工厂故障可能导致不均匀和难以管理的流动和固体分布。计算流体动力学(CFD)建模是评估处理过程中多个单元的流动分布的一种有价值的工具。本文回顾了在完成工厂设计之前，通过对Infilco高速溶解气浮选(DAF)进水通道进行CFD分析所获得的好处。CFD模型用于优化DAF进水通道配置，其中涉及到插入现有设施占地的10个相同处理单元的流量分布。对于初始配置模型，单个DAF单元的流量最大偏差超过60%。利用CFD，设计工程师开发了DAF进水通道配置，预计偏差小于10%。升级后的设备已建成并投入使用，并用实际浊度数据验证了CFD模型的结果，表明固体颗粒均匀分布在DAF工艺流程中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Quality Research Journal of Canada WATER RESOURCES-

CiteScore

1.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Water Quality Research Journal publishes peer-reviewed, scholarly articles on the following general subject areas: Impact of current and emerging contaminants on aquatic ecosystems Aquatic ecology (ecohydrology and ecohydraulics, invasive species, biodiversity, and aquatic species at risk) Conservation and protection of aquatic environments Responsible resource development and water quality (mining, forestry, hydropower, oil and gas) Drinking water, wastewater and stormwater treatment technologies and strategies Impacts and solutions of diffuse pollution (urban and agricultural run-off) on water quality Industrial water quality Used water: Reuse and resource recovery Groundwater quality (management, remediation, fracking, legacy contaminants) Assessment of surface and subsurface water quality Regulations, economics, strategies and policies related to water quality Social science issues in relation to water quality Water quality in remote areas Water quality in cold climates The Water Quality Research Journal is a quarterly publication. It is a forum for original research dealing with the aquatic environment, and should report new and significant findings that advance the understanding of the field. Critical review articles are especially encouraged.