Hydraulic characterization of an activated sludge reactor with recycling system by tracer experiment and analytical models

被引：16

作者：

Sanchez, F. ^{[1
]}

Viedma, A. ^{[1
]}

Kaiser, A. S. ^{[1
]}

机构：

[1] Univ Politecn Cartagena, Dept Ingn Term & Fluidos, Dr Fleming S-N, Cartagena 30202, Spain

来源：

WATER RESEARCH | 2016年 / 101卷

关键词：

Residence time distribution (RTD); Hydraulic efficiency; Activated sludge system; WWTP; RESIDENCE TIME DISTRIBUTION; FLOW; EFFICIENCY; RTD; PERFORMANCE; PARAMETERS;

D O I：

10.1016/j.watres.2016.05.094

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fluid dynamic behaviour plays an important role in wastewater treatment. An efficient treatment requires the inexistence of certain hydraulic problems such as dead zones or short-circuiting flows. Residence time distribution (RTD) analysis is an excellent technique for detecting these inefficiencies. However, many wastewater treatment installations include water or sludge recycling systems, which prevent us from carrying out a conventional tracer pulse experiment to obtain the RTD curve of the installation. This paper develops an RTD analysis of an activated sludge reactor with recycling system. A tracer experiment in the reactor is carried out. Three analytical models, derived from the conventional pulse model, are proposed to obtain the RTD curve of the reactor. An analysis of the results is made, studying which model is the most suitable for each situation. This paper is useful to analyse the hydraulic efficiency of reactors with recycling systems. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：382 / 392

页数：11

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