EMUASA Murcia Water Works

Murcia, Spain

EMUASA Murcia Water Works

Murcia, Spain
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Osorio F.,University of Granada | Sanchez M.,EMUASA Murcia Water Works | Torres J.C.,EMUASA Murcia Water Works
Energy Sources, Part A: Recovery, Utilization and Environmental Effects | Year: 2014

This article describes how biofuel for vehicles was obtained from the biogas produced during the anaerobic digestion process at a wastewater treatment plant, and analyzes the extraction of CO2 by chemical absorption with mono-ethanol-amine at 20%. This research study tested the viability of a low pressure process (1.250 bar) for treating biogas with a high CO2 content (approximately 40%). The pilot plant used in this study was of sufficient size to treat a biogas volume of 10 m3/h. The inflowing biogas had been previously treated by chemical desulphurization using scrubbing towers and activated carbon. These processes had removed the sulphur compounds and other trace components in the biogas. The results obtained indicated the optimal amine quantity and scrubbing tower volume, as well as the temperature necessary to make the desorption process for amine regeneration most effective. When this process was optimized, the outflowing biogas had a mean CO2 concentration of 0.1%. © Taylor & Francis.

Poyatos J.M.,University of Granada | Almecija M.C.,University of Granada | Garcia-Mesa J.J.,University of Granada | Munio M.M.,University of Almeria | And 3 more authors.
Water Environment Research | Year: 2011

Because of the growing need to eliminate undesirable microorganisms in different industrial treatments, mainly in the food and agricultural sector and the pharmaceutical industry, a number of increasingly effective systems for disinfection to eliminate microorganisms have been devised. This article analyzes different methods to eliminate and/or significantly reduce the number of microorganisms in industrial contexts and in environmental engineering. Although, in the past, thermal treatments had been used most frequently for microbial elimination, the method is costly and has the disadvantage of modifying the organoleptic and/or physicochemical properties of the food products. For this reason, new technologies rapidly are being developed, such as high-intensity pulsed electric fields, high-pressure systems, ultrasounds, and irradiation, which effectively eliminate microorganisms without deteriorating the properties of the product. These emerging technologies are potentially applicable in the field of environmental engineering.

Osorio F.,University of Granada | Torres J.C.,EMUASA Murcia Water Works | Hontoria E.,University of Granada
Proceedings of the Institution of Civil Engineers: Water Management | Year: 2010

The main aim of the present research was to check the applicability and optimise the design parameters of biological aerated filters (BAFs) for the treatment of effluents from the food and agricultural industries, and specifically in this study, from citrus plants. Expanded clay was used as a support material. Two different material sizes were tested, 2-5 mm and 3-7 mm. Cocurrent flow was used and the process aeration level was 10.47 Nm3/h per m2. Backwashing was carried out on a daily basis. The results showed that in order to obtain an effluent with a maximum concentration of 1100 mg chemical oxygen demand (COD)/l, the system performance was optimal for a material size of 3-7 mm. In this case, the maximum admissible volumetric load was 72 kg COD/m3 per day. However, in order to obtain an effluent with a maximum concentration of 600 mgCOD/l, the optimal system performance was with a material size of 2-5 mm, and a maximum admissible volumetric load of 30 kg COD/m3 per day.

Poyatos J.M.,University of Granada | Munio M.M.,University of Almeria | Almecija M.C.,University of Granada | Torres J.C.,EMUASA Murcia Water Works | And 2 more authors.
Water, Air, and Soil Pollution | Year: 2010

The protection and conservation of natural resources is one of the main priorities of modern society. Water is perhaps our most valuable resource, and thus should be recycled. Many of the current recycling techniques for polluted water only concentrate the pollutant without degrading it or eliminating it. In this sense, advanced oxidation processes are possibly one of the most effective methods for the treatment of wastewater containing organic products (effluents from chemical and agrochemical industries, the textile industry, paints, dyes, etc.). More conventional techniques cannot be used to treat such compounds because of their high chemical stability and/or low biodegradability. This article describes, classifies, and analyzes different types of advanced oxidation processes and their application to the treatment of polluted wastewater. © 2009 Springer Science+Business Media B.V.

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