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de Murcia, Spain

Trapote A.,University of Alicante | Albaladejo A.,University of Alicante | Simon P.,Esamur
Civil Engineering and Environmental Systems | Year: 2014

Of all the costs associated with the operation and maintenance of wastewater treatment plants (WWTPs), those associated with energy use tend to be the most significant. From this point of view, it is hence logical that energy efficiency and saving strategies should be one of the current focuses of debate amongst those involved with the management of WWTPs. The present study's objective is to determine the correlation between size and energy consumption for a WWTP. To this end, 90 WWTPs currently in service were analysed and their energetic impact quantified in terms of kWh/m3 of water treated. The results obtained demonstrate that energy consumption ratio increases as the size of WWTPs decreases, either in terms of treatment volume or population equivalent served. © 2013, © 2013 Taylor & Francis.


Bernabeu A.,Universidad Politecnica de Ingenieria | Vercher R.F.,Universidad Politecnica de Ingenieria | Santos-Juanes L.,Universidad Politecnica de Ingenieria | Simon P.J.,Esamur | And 3 more authors.
Catalysis Today | Year: 2011

Water taken from the outlet of a wastewater treatment plant from the South East of Spain has been treated by means of TiO2-based solar photocatalysis. Preliminary analysis showed the presence of significant amounts of nine emerging pollutants (order of magnitude of ng/l): trimethoprim, ofloxacin, enrofloxacin, clarithromycin, acetaminophen, diclofenac, caffeine, thiabendazole and carbamazepine; and trace amounts of another two were detected, namely acetamiprid and erythromycin. Irradiation of the effluent in the presence of TiO2 resulted in a significant removal of all the emerging pollutants, as most of them were detected only at trace amounts after the treatment. In addition to this, percentages of faecal bacteria elimination were close to 100%. Finally, experiments carried out using caffeine as model compound showed that a mild photo-Fenton process might be employed at neutral media in the presence of humic acids, although the performance was worse than photo-Fenton at acidic pH or TiO2. © 2010 Elsevier B.V. All rights reserved.


Collado S.,University of Oviedo | Laca A.,University of Oviedo | Diaz M.,University of Oviedo | Simon P.,Esamur | And 3 more authors.
Tecnologia del Agua | Year: 2012

A correct design of the aeration system is essential for technical and economic feasibility of a sewage treatment plant (WWTP), because it involves a 70% of the energy costs of the plant and determine the final degree of purification attainable. In this paper, the basic principles governing the transfer of oxygen gas-liquid are described, together with the main parameters used to define the efficiency of the system.


Collado S.,University of Oviedo | Laca A.,University of Oviedo | Diaz M.,University of Oviedo | Simon P.,Esamur | And 3 more authors.
Tecnologia del Agua | Year: 2011

Extracellular polymeric substances (EPS) have a key role in water treatment processes and processes because they are involved in biosorption, flocculation and adherence processes. In this paper, the main aspects related to the characteristics and chemical composition of the bound and soluble EPS are revised and discussed, together with the role of these substances in the biological wastewater treatment.


Collado S.,University of Oviedo | Laca A.,University of Oviedo | Diaz M.,University of Oviedo | Simon P.,Esamur | And 3 more authors.
Tecnologia del Agua | Year: 2011

Extracellular polymeric substances (EPS) have a key role in water treatment processes because they are involved in biosorption, flocculation and adherence processes. In this paper, the main aspects related to the characteristics and chemical composition of the bound and soluble EPS are revised and discussed, together with the effect of operating variables on the production of these substances in the biological wastewater treatment.

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