Rafael Mujeriego

Rafael Mujeriego
Universitat Politècnica de Catalunya | UPC · Department of Hydraulic, Maritime and Environmental Engineering (EHMA)

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69
Publications
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2,324
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Publications

Publications (69)
Article
Full-text available
A preliminary assessment of incidental potable water reuse (IPR) in the Llobregat River basin has been conducted by estimating the dilution factor of treated effluent discharges upstream of six river flow measurement sections. IPR in the Llobregat River basin is an everyday occurrence, because of the systematic discharge of treated effluents upstre...
Article
Full-text available
The Camp de Tarragona Water Reuse Project is an emblematic example of how regional water scarcity can be overcome by considering reclaimed secondary effluent, which would otherwise be disposed of in the Mediterranean Sea, as an essential component of integrated water resources management. An advanced water reclamation plant (AWRP) was completed in...
Conference Paper
Full-text available
potable indirecta (RPI) es un concepto innovador con un objetivo común: generar una fuente de agua no convencional, alternativa o nueva, más fiable frente a la irregularidad meteorológica (mayor auto-suficiencia), dotándola de una de las dos opciones de "naturalidad" posibles: un acuífero costero o un embalse de regulación. La regeneración potable...
Article
Full-text available
Four water reclamation facilities in north-eastern Spain were monitored over 2 years to determine the occurrence and concentrations of a set of microbial indicators (total coliforms, Escherichia coli, enterococci, spores of sulphite reducing clostridia, somatic coliphages, F-specific RNA phages, phages infecting Bacteroides fragilis strain RYC2056...
Article
This paper presents the results of the demonstration project to validate the process of surface filtration by gravity of the filter Hydrotech Discfilter, with mesh of 10 μm of pore size, like physical barrier against parasitic helminth eggs in reclaimed water. Water proceeding from the Actiflo system was experimentally contaminated with eggs of Tri...
Article
Full-text available
Water reclamation and reuse have become essential components of water resources management in Vitoria-Gasteiz, by helping to overcome historical water deficits experienced by the city with respect to water allocations set in 1973 with the Metropolitan Area of Bilbao, for the conjunctive use of the Urrunaga-Ullibarri reservoirs system. By generating...
Article
Full-text available
The combined effects of disinfectant agents on the microbiological quality of reclaimed water produced by two full-scale water reclamation plants in Catalonia, Spain, were examined in this work. All the disinfectant treatments tested led to the absence, or near absence, of E. coli in 100 mL samples of water, with log reductions of more than 3 log u...
Article
Full-text available
Microbial quality of reclaimed water can be adequately interpreted by graphical adjustment of experimental results to a lognormal probability distribution; the method serves to verify the degree of conformity to the proposed distribution and to visualize the time variability of the results. A conventional physico-chemical treatment can inactivate u...
Article
Full-text available
Irrigation with reclaimed water is becoming a practical alternative to conventional irrigation in semi-arid areas of the Mediterranean like Spain, but it requires a reliable treatment process to provide a safe water supply. Helminth eggs are one of the main concerns for the safe use of reclaimed water, as they can survive adverse environmental cond...
Article
Full-text available
Water reclamation and reuse have become essential components of water resources management in the Metropolitan Area of Barcelona, by helping to develop additional water resources in the lower Llobregat River, one of its main sources of water supply. By generating a reliable flow of 300,000 m3/day of high quality reclaimed water, the options availab...
Article
Total trihalomethane (TTHM) concentrations were determined in three chlorinated effluents (i.e. secondary and tertiary) from full-scale wastewater treatment plants (WWTP) in NE Spain over a 2-year monitoring period (May 2003-February 2005). Low TTHM concentrations (2-30 microg L(-1)), according to international standards for drinking water (80-150...
Article
In this investigation, diurnal variations in contaminant removal in high rate ponds (HRP) treating urban wastewater were evaluated. Two experimental HRPs (surface area 1.54 m2 and depth 0.3 m), each with a clarifier in series (surface area 0.025 m2), were operated in parallel with different hydraulic retention times (3-10 days) but with the same en...
Article
Full-text available
This study evaluates the effect of hydraulic loading rate (HLR), aspect ratio, granular medium size and water depth on the removal of selected contaminants in horizontal subsurface flow constructed wetlands (SSF) over a period of 3 years. Experiments were carried out in a pilot-scale SSF system comprising four pairs of lined beds of almost equal su...
Article
Full-text available
A pilot-scale horizontal flow constructed wetland (HFCW) system planted with common reed (Phragmites sp.) was constructed to study how hydraulic loading rate (HLR), aspect ratio, water depth, and granular medium affect to the fate of several organic matter degradation intermediates namely, acetic acid (HAc), isovaleric acid (Isoval), and dimethylsu...
Article
The objective of this article is to evaluate the effect of water depth on organic matter removal efficiency in horizontal subsurface flow constructed wetlands (SSFs). Experiments were carried out in a pilot plant comprising eight parallel SSF of almost equal surface area (54-56 m2 each) and treating urban wastewater. Each SSF differs from the other...
Article
Full-text available
The objective of this study was to evaluate the influence of the aspect ratio and granular medium size on the hydraulic behaviour of horizontal subsurface flow constructed wetlands (SSFs) by means of tracer tests. In addition, the accuracy of non-ideal flow models (plug flow (PF) with dispersion and complete stirred tanks (CSTs) in series with dela...
Article
Full-text available
The objective of this study was to evaluate the impact of effluent and sludge discharges of an abattoir wastewater treatment plant (WWTP) on the operation of a municipal aerated pond WWTP. Experiments were carried out in Cervera WWTP, located in north-eastern Spain, which comprises four ponds operating in series. Cervera WWTP treats a flow rate of...
Article
The behavior of linear alkylbenzene sulfonate (LAS) and sulfophenyl carboxylate (SPC) biointermediates in a pilot subsurface flow constructed wetland (SFCW) is reported for the first time. The effects of wetland configuration and operation on their treatment efficiency were investigated. The pilot SFCW constituted by eight beds of 55 m2 with differ...
Article
This study evaluates the effect of hydraulic loading rate (HLR), aspect ratio, granular medium size and water depth on the removal of selected contaminants during the start up of horizontal subsurface flow reed beds (HFRBs). Experiments were carried out in a pilot-scale HFRB system comprising four pairs of lined beds of almost equal surface area (5...
Article
Full-text available
Este trabajo presenta los resultados experimentales obtenidos en una planta piloto de regeneración de agua residual, con capacidad para producir 20 m3/día de agua regenerada. El agua regenerada se destina al riego experimental de cultivos de consumo crudo. La planta está instalada en la EDAR de Mataró, donde se depuran aguas residuales con un conte...
Article
Full-text available
A headspace solid-phase microextraction (HS-SPME) preconcentration method was applied to the analysis of some of the major odorous compounds occurring in wastewater using GC/MS or GC/NPD detection. The detection limit for volatile amines, volatile fatty acids, and volatile alkylsulphides ranged from 3 to 100, 2 to 150, and 0.0006 to 0.035 microg/L,...
Article
This study investigated the simultaneous variations of temperature, redox potential (EH), and contaminants over the width, length, and depth of horizontal flow reed bed (HFRB) systems treating wastewater. The hydrodynamic behavior of HFRBs was also assessed. Experiments were carried out on two HFRB systems. One of the systems treats wastewater from...
Article
Full-text available
The objective of this work was to develop an experimental treatment method for nitrate removal from secondary effluents through denitrification. Three plant substrates (pine bark, almond shells, and walnut shells) were used as organic carbon sources for denitrification and as a medium for the denitrifying bacteria. Experiments were carried out usin...
Article
The VFA-potential method is a fermentation technique for estimating the total volatile fatty acids (VFA) availability in wastewater. The VFA-potential was conceived as a measurement of the readily fermentable COD, because fermentation utilizes this COD as a substrate. However, anaerobic hydrolysis can also be a potential source of fermentable matte...
Article
The main objective of this paper is to evaluate the role of hydraulic retention time (HRT) and granular medium in faecal coliform (FC) and somatic coliphage (SC) removal in tertiary reed beds. Experiments were carried out in a pilot plant with four parallel reed beds (horizontal subsurface flow constructed wetlands), each one containing a different...
Article
Full-text available
A low volatile fatty acid wastewater from a Barcelona residential area was prefermented in a laboratory-scale primary clarifier operated as a prefermenter -an activated primary tank. Total suspended solids (TSS), oxidation-reduction potential (ORP) and temperature were measured in the prefermenter. Influent and effluent were characterised through c...
Article
Full-text available
This study evaluates the influence of hydraulic retention time (HRT), solar radiation, and water temperature on phosphorus removal from two experimental high rate oxidation ponds (HROP) with clarifiers. Both HROPs were operated for a period of one year with different HRTs (3 to 10 d), but under the same environmental conditions. Phosphorus species,...
Article
An evaluation of small wastewater treatment plants (WWTPs) treating the effluents of communities with <2000 inhabitants in Catalonia (north-east of Spain) was carried out to establish the definition of appropriate wastewater treatment (AWT) and the criteria for the selection of the alternative processes that can achieve the AWT. The implementation...
Article
Full-text available
Los Reactores Biológicos Secuenciales son una alternativa a los sistemas de tratamiento de fangos activados convencionales. Su funcionamiento discontinuo, basado en ciclos que se repiten a lo largo del tiempo, les proporciona una gran flexibilidad para adaptarse a diferentes modalidades de tratamiento y, en concreto, para la eliminación de nutrient...
Article
The increasing use of mineral fertilisers over the last decades has contributed to the appearance of numerous cases of water eutrophication, a new form of water pollution. The starting point of eutrophication is the increase of nutrient concentration (nitrogen and phosphorus) in a water mass, which is subsequently followed by an uncontrolled growth...
Article
Full-text available
A study was carried out to compare the inactivation of faecal bacteria and one type of bacteriophage in a full-scale UV disinfection system. The system is part of a water reclamation facility for effluent reuse in golf course and agricultural irrigation. Influent and effluent samples were taken over two sampling periods (three consecutive days in J...
Article
Full-text available
An evaluation of the 24 existing pond systems for treatment of urban wastewater in Catalonia (north-eastern Spain) was conducted in 1997-1998. The evaluation covered 13 aerated ponds, 7 waste stabilization ponds (WSP), and 4 maturation ponds added to conventional biological wastewater treatment plants (WWTP). The technical characteristics of the po...
Article
Full-text available
Two experimental high rate algal ponds (HRAPs) (1.5m2, 570 L per unit), each with a secondaryclarifier for algal biomass separation (0.025 m2,without recirculation), were fed with urban wastewaterfor a one-year period (June 1993 to July 1994). TheHRAPs were installed on the roof of the Department ofHydraulic, Coastal and Environmental Engineering o...
Article
Full-text available
The objective of this study is to analyze the influence of phytoplankton species composition on biomass removal from high-rate oxidation ponds or lagoons (HROPs) by means of sedimentation with spontaneous flocculation. Two experimental systems each consisting of an HROP (with a surface area of 1.54 m2 and depth of 0.3 m) with a clarifier (surface a...
Article
The role of advanced wastewater treatment in wastewater reclamation and reuse is reviewed. Most of the current wastewater reclamation and reuse technologies are essentially derived from those used in water and wastewater treatment. However, opportunities for adopting technological innovations are much greater for water reuse applications, because r...
Article
The role of advanced wastewater treatment in wastewater reclamation and reuse is reviewed. Most of the current wastewater reclamation and reuse technologies are essentially derived from those used in water and wastewater treatment. However, opportunities for adopting technological innovations are much greater for water reuse applications, because r...
Article
Full-text available
El objetivo del presente estudio es determinar las condiciones de explotación de dos lagunas experimentales que permiten obtener un mayor rendimento de eliminación de la materia orgánica y los nutrientes del agua residual urbana. También se pretende establecer el rendimiento de los decantadores secundarios experimentales utilizados para la separaci...
Article
Full-text available
Los sistemas de almacenamiento y distribución de agua potable constituyen un ambiente propicio para el desarrollo bacteriano; el flujo de agua favorece el transporte de nutrientes y bacterias, mientras que las paredes de las tuberías y las partículas presentes en el agua pueden servir de superficie de crecimiento para las bacterias. En este artícul...
Article
The Mas Nou golf course has been using disinfected secondary effluent for irrigation since September 1989. Although adjusted-SAR values and EC of irrigation water have generally fallen in the non-restricted irrigation categories, EC values were initially higher than desirable for turf irrigation, due to high effluent chloride concentration. A defin...
Article
The Mas Nou golf course has been using disinfected secondary effluent for irrigation since September 1989. Although adjusted-SAR values and EC of irrigation water have generally fallen in the non-restricted irrigation categories, EC values were initially higher than desirable for turf irrigation, due to high effluent chloride concentration. A defin...
Article
Irrigation with treated municipal wastewater has been conducted at the Mas Nou Golf Course since September 1989, in the framework of a jointly sponsored demonstration project. The results obtained during the first 18 months have provided useful criteria for ensuring a satisfactory public health protection and adequate aesthetics of the golf course...
Article
Although the latest summary report prepared by the Commission of the European Communities represents a major advance in the implementation of the Directive 76/160, there is a need for a more homogeneous and consistent evaluation of bathing water quality. Bathing water quality is one of the main factors responsible for tourist attraction to the Medi...
Chapter
The objectives of this paper were to analyze the progress made during the last decade on the techniques for monitoring the microbiological quality of bathing waters, to evaluate the implications of current quality standards, and to discuss the criteria used in the promotion and certification of bathing areas. Advance made allow the elaboration of m...
Article
Evaluation of industrial cooling systems using reclaimed municipal wastewater was made. For an industry, three major conditions which can dictate considerations of water reuse for industrial cooling systems are: 1) scarcity of freshwater supplies, 2) public policy which encourages wastewate reuse, and 3) lower costs than those incurred with freshwa...
Chapter
The recent trend toward the use of reclaimed municipal wastewater for purposes such as landscape and food crop irrigation, groundwater recharge, and recreational impoundment often requires tertiary or advanced wastewater treatment. These water reuse applications result in exposing the public to reclaimed wastewater, thus assurance of microbiologica...
Article
Full-text available
INTRODUCCIÓN La reutilización de aguas residuales es un componente intrínseco del ciclo natural del agua. Mediante el vertido de estos efluentes a los cursos de agua y su dilución con el caudal circulante, las aguas residuales han venido siendo reutilizadas incidentalmente en puntos aguas abajo de los cauces para aprovechamientos urbanos, agrícolas...
Article
Full-text available
L'article sintetitza els aspectes més importants de la reutilització planificada de l'aigua (concepte, beneficis, exigències i fiabilitat del procés de regeneració). Es tracten també els tipus de reutilització més significatius: urbana, industrial, agrícola i forestal ornamental i recreativa, de millora i preservació del medi natural i recàrrega ar...
Article
Full-text available
INTRODUCCIÓN La reutilización de aguas residuales es un componente intrínseco del ciclo natural del agua. Mediante el vertido de estos efluentes a los cursos de agua y su dilución con el caudal circulante, las aguas residuales han venido siendo reutilizadas incidentalmente en puntos aguas abajo de los cauces para aprovechamientos urbanos, agrícolas...
Article
Resumen Este artículo describe la historia reciente y las actividades del CCB, y presenta la evolución seguida por la regeneración y la reutilización planificada de agua en la Costa Brava, desde su inicio en 1985 hasta la actualidad. El artículo describe los usos actuales y las calidades conseguidas en el agua regenerada y se apuntan algunas reflex...
Article
Thesis (Ph. D. in Engineering)--University of California, Berkeley, June 1976. Includes bibliographical references.

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