Empresa General Valenciana del Agua Egevasa

Valencia, Spain

Empresa General Valenciana del Agua Egevasa

Valencia, Spain
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Soriano F.Z.,Empresa General Valenciana del Agua Egevasa | Montanana V.F.,Empresa General Valenciana del Agua Egevasa | Torregrosa J.V.,Empresa General Valenciana del Agua Egevasa | Bernat C.B.,Empresa General Valenciana del Agua Egevasa | Salinas S.L.,Empresa General Valenciana del Agua Egevasa
Tecnologia del Agua | Year: 2011

Over the last years there has been a growing interest for phosphorus and nitrogen removal within wastewater treatment due to the contribution of these nutrients to the eutrophication of natural water bodies. This contribution has led to stricter removal requirements for these nutrients. The aim of this paper is to provide useful guidelines to achieve biological nitrogen removal, focusing the study in a wastewater treatment plant (WWTP) with double stage treatment (A+B) and without anoxic zone. Moreover, respirometric techniques are used to determine additional sources of carbonaceous organic matter to its possible addition during the denitrification process.


Camps E.J.A.,Empresa General Valenciana del Agua Egevasa | Montanana V.F.,Empresa General Valenciana del Agua Egevasa | Soriano F.Z.,Empresa General Valenciana del Agua Egevasa | Martinez Y.M.C.,Universidad Politécnica de Ingeniería | And 3 more authors.
Tecnologia del Agua | Year: 2011

The high quality effluent produced by membrane bioreactors (MBR) enables the protection of water resources, and offers great prospects for reuse. However membrane fouling problems have limited the implementation of these processes at industrial scale. In this paper, the influence of aeration intensity on the performance of the filtration process in a pilot plant was studied. Furthermore, the membrane fouling was evaluated considering the shear stresses on the membrane surface, which was determined by computational fluid dynamics. The simulation results showed that a change in the aeration flow from 1.7 m 3·h -1 to 2.8 m 3·h -1 (SSLM = 6.000 mg·1 -1) caused an increase the average shear stress in 18%, and altered significantly its distribution on the membrane surface, reducing its rate of fouling.

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