Comparison between experimental results of different technologies for arsenic removal from water intended for human consumption

2019 ◽  
Vol 14 (4) ◽  
pp. 884-896
Author(s):  
Maria Cristina Collivignarelli ◽  
Silvestro Damiani ◽  
Sabrina Sorlini
Keyword(s):  
Drinking Water ◽  
Arsenic Removal ◽  
Experimental Studies ◽  
Treatment Plant ◽  
Arsenic Contamination ◽  
Full Scale ◽  
Laboratory Scale ◽  
Basic Solution ◽  
First Case

Abstract Arsenic contamination in drinking water is a major issue in the present world. Techniques such as oxidation, precipitation and adsorption have been widely used for arsenic removal. The goal of this work is to analyze four case studies where the problem of arsenic contamination in groundwater is faced with an approach that includes experimental activities at laboratory scale and/or pilot scale. The first case study investigates the mechanisms for enhancing arsenic removal with naturally occurring Fe by the addition of an oxidizing agent (KMnO4) or a concentrated basic solution of MnO4− and AlO2−. In the second case study, different experimental tests are carried out at laboratory scale in order to identify the best combination of treatments to be applied at full scale. The third case study shows the results of experimental studies followed by a full-scale upgrading for a drinking water treatment plant (DWTP) with no specific arsenic treatment in the first configuration. Last, the fourth case study investigates the performance of granular ferric oxide (GFO) with arsenic concentrations close to the Italian regulatory limit. A pilot GFO filter was installed in a DWTP. The monitoring results led to the implementation of the GFO filter at full scale.

Full-Scale Application of Catalytic Ozonation for Drinking Water Treatment: Case Study in China

2014 ◽  
Vol 140 (9) ◽  
Author(s):  
Zheng-Qian Liu ◽  
Bang-Jun Han ◽  
Gang Wen ◽  
Jun Ma ◽  
Sheng-Jun Wang ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Catalytic Ozonation ◽  
Full Scale

Principal Component Analysis of Hydrological Data

2010 ◽  
pp. 364-388
Author(s):  
Petr Praus
Keyword(s):  
Water Quality ◽  
Principal Component Analysis ◽  
Drinking Water ◽  
Ground Water ◽  
Principal Component ◽  
Component Analysis ◽  
Data Sets ◽  
Hydrological Data ◽  
First Case

In this chapter the principals and applications of principal component analysis (PCA) applied on hydrological data are presented. Four case studies showed the possibility of PCA to obtain information about wastewater treatment process, drinking water quality in a city network and to find similarities in the data sets of ground water quality results and water-related images. In the first case study, the composition of raw and cleaned wastewater was characterised and its temporal changes were displayed. In the second case study, drinking water samples were divided into clusters in consistency with their sampling localities. In the case study III, the similar samples of ground water were recognised by the calculation of cosine similarity, the Euclidean and Manhattan distances. In the case study IV, 32 water-related images were transformed into a large image matrix whose dimensionality was reduced by PCA. The images were clustered using the PCA scatter plots.

Tertiary ozonation of industrial wastewater for the removal of estrogenic compounds (NP and BPA): a full-scale case study

2013 ◽  
Vol 68 (3) ◽  
pp. 567-574 ◽  
Author(s):  
G. Bertanza ◽  
M. Papa ◽  
R. Pedrazzani ◽  
C. Repice ◽  
M. Dal Grande
Keyword(s):  
Removal Efficiency ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Full Scale ◽  
Residual Content ◽  
Endocrine Disrupting ◽  
Treatment Stage ◽  
Flow Rate Increase

Wastewater treatment plant (WWTP) effluents are considered to be a major source for the release in the aquatic environment of endocrine-disrupting compounds (EDCs). Ozone has proved to be a suitable solution for polishing secondary domestic effluents. In this work, the performance of a full-scale ozonation plant was investigated in order to assess the removal efficiency of four target EDCs: nonylphenol, nonylphenol monoethoxylate, nonylphenol diethoxylate and bisphenol A. The studied system was the tertiary treatment stage of a municipal WWTP which receives an important industrial (textile) load. Chemical analyses showed that the considered substances occurred with a significant variability, typical of real wastewaters; based on this, ozonation performance was carefully evaluated and it appeared to be negatively affected by flow-rate increase (during rainy days, with consequent contact time reduction). Moreover, EDCs' measured removal efficiency was lower than what could be predicted based on literature data, because of the relatively high residual content of biorefractory compounds still present after biological treatment.

Economic Feasibility Study for Improving Drinking Water Quality: A Case Study of Arsenic Contamination in Rural Argentina

EcoHealth ◽  
2014 ◽  
Vol 11 (4) ◽  
pp. 476-490 ◽  
Author(s):  
María Molinos-Senante ◽  
Alejo Perez Carrera ◽  
Francesc Hernández-Sancho ◽  
Alicia Fernández-Cirelli ◽  
Ramón Sala-Garrido
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Feasibility Study ◽  
Arsenic Contamination ◽  
Economic Feasibility ◽  
Drinking Water Quality
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