Neutral or acidic pH for the removal of contaminants of emerging concern in wastewater by solar photo -Fenton? A techno-economic assessment of continuous raceway pond reactors

被引：48
|
作者：
Sanchez Perez, J. A. [1 ,2 ]
Arzate, S. [1 ,2 ]
Soriano-Molina, P. [1 ,2 ]
Garcia Sanchez, J. L. [1 ,2 ]
Casas Lopez, J. L. [1 ,2 ]
Plaza-Bolanos, P. [1 ,3 ]
机构：
[1] Solar Energy Res Ctr CIESOL, Joint Ctr Univ Almeria CIEMAT, Carretera Sacramento S-N, Almeria 04120, Spain
[2] Univ Almeria, Dept Chem Engn, Almeria, Spain
[3] Univ Almeria, Dept Chem & Phys, Almeria, Spain
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2020年 / 736卷
关键词：
MICROPOLLUTANT REMOVAL; MICROCONTAMINANTS; NANOFILTRATION; PESTICIDES; EFFLUENTS; SPAIN; COST;
D O I：
10.1016/j.scitotenv.2020.139681
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
As far as the authors know, no in-depth comparison has been made between the different performances of the solar photo-Fenton process for the removal of contaminants of emerging concern (CECs) as a function of pH. To this end, real WWTP secondary effluents were treated in continuous flow mode at pilot plant scale. The effect of hydraulic residence time (HRT), liquid depth and percentage of CEC removal on treatment capacity was studied. At acidic pH (2.8), the iron source was FeSO4 and at neutral pH (7.0), it was Fe(III)-EDDS. At both pH values, 2250 L m−2 d−1 can be treated in 15-cm deep raceway pond reactors at 30 min HRT with 0.1 mM iron and 0.88 mM H2O2 in order to achieve 80% CEC removal. Treatment costs were 0.25 € m−3 and 0.56 € m−3 at acidic and neutral pH, respectively. This study paves the way for the solar photo-Fenton process to be employed on a commercial scale. © 2020
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页数：12
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