A dynamic physicochemical model for chemical phosphorus removal

被引：100

作者：

Hauduc, H. ^{[1
,2
,3
]}

Takacs, I. ^{[4
]}

Smith, S. ^{[5
]}

Szabo, A. ^{[6
]}

Murthy, S. ^{[7
]}

Daigger, G. T. ^{[8
]}

Sperandio, M. ^{[1
,2
,3
]}

机构：

[1] Univ Toulouse, INSA, UPS, INP, F-31077 Toulouse 4, France

[2] INRA, Ingn Syst Biol & Proc UMR792, F-31400 Toulouse, France

[3] CNRS, UMR5504, F-31400 Toulouse, France

[4] Dynamita, Nyons, France

[5] Wilfrid Laurier Univ, Waterloo, ON N2L 3C5, Canada

[6] Innowater Ltd, Budapest, Hungary

[7] DCWater, Washington, DC USA

[8] CH2MHill, Denver, CO USA

来源：

WATER RESEARCH | 2015年 / 73卷

关键词：

Chemical phosphorus removal; Physicochemical modelling; Ferric chloride; Hydrous ferric oxide; Phosphate adsorption; ACTIVATED-SLUDGE; FERRIC IRON; PHOSPHATE; PRECIPITATION; SYSTEMS; CRYSTALLIZATION; VERIFICATION; HYDROLYSIS; ADSORPTION; FRAMEWORK;

D O I：

10.1016/j.watres.2014.12.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A dynamic physico-chemical model for chemical phosphorus removal in wastewater is presented as a tool to optimize chemical dosing simultaneously while ensuring compliant effluent phosphorus concentration. This new model predicts the kinetic and stoichiometric variable processes of precipitation of hydrous ferric oxides (HFO), phosphates adsorption and co-precipitation. It is combined with chemical equilibrium and physical precipitation reactions in order to model observed bulk dynamics in terms of pH. The model is calibrated and validated based on previous studies and experimental data from Smith et al. (2008) and Szabo et al. (2008) as a first step for full-plant implementation. The simulation results show that the structure of the model describes adequately the mechanisms of adsorption and co-precipitation of phosphate species onto HFO and that the model is robust under various experimental conditions. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：157 / 170

页数：14

共 31 条

[1]

[Anonymous], 2013, CURR OPIN HIV AIDS, DOI DOI 10.1097/COH.0000000000000002

[2] Analysis of phosphate adsorption onto ferrihydrite using the CD-MUSIC model [J].