CFD analysis of sludge accumulation and hydraulic performance of a waste stabilization pond

被引：29

作者：

Alvarado, Andres ^{[1
,2
]}

Sanchez, Esteban ^{[1
]}

Durazno, Galo ^{[3
]}

Vesvikar, Mehul ^{[2
]}

Nopens, Ingmar ^{[2
]}

机构：

[1] Univ Cuenca, DIUC, Cuenca, Ecuador

[2] Univ Ghent, BIOMATH, Dept Math Modelling Stat & Bioinformat, B-9000 Ghent, Belgium

[3] Empresa Publ Municipal Telecomunicac Agua Potable, ETAPA, Cuenca, Ecuador

来源：

WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 11期

关键词：

computational fluid dynamics (CFD); sludge bathymetry; tracer; waste stabilization pond; FLUID-DYNAMICS; DESIGN; MODEL; SIMULATION; REGION; LAGOON;

D O I：

10.2166/wst.2012.450

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sludge management in waste stabilization ponds (WSPs) is essential for safeguarding the system performance. Sludge accumulation patterns in WSPs are strongly influenced by the pond hydrodynamics. CFD modeling was applied to study the relation between velocity profiles and sludge deposition during 10 years of operation of the Ucubamba WSP in Cuenca (Ecuador). One tracer experiment was performed and three sludge accumulation scenarios based on bathymetric surveys were simulated. A residence time distribution (RTD) analysis illustrated the decrease of residence times due to sludge deposition. Sludge accumulation rates were calculated. The influence of flow pattern on the sludge deposition was studied, enabling better planning of future pond operation and desludging.

引用

页码：2370 / 2377

页数：8

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