The Ondarroa WWTP receives wastewater with a very high salt load due to marine intrusion and discharges from canning industries. The high levels of SH2 in the network and in the WWTP cause serious problems of safety, odour and equipment degradation. To solve this, action has been taken in the network, reducing the contribution of sulphates at source by separating networks, reprogramming pumping and improving the management of waste from the canneries.

    At the WWTP, the water sheets have been confined, the filter presses have been replaced by centrifuges, the interior ventilation has been modelled using CFD and deodorisation has been installed consisting of two stages (biotrickling + activated carbon) for the confined atmospheres and one stage (activated carbon) for the ambient air.

I. Astigarraga*, A. López, J.J. Martínez, F. Ortega, U. Sagasti

   Consorcio de Aguas Bilbao Bizkaia, c/ S. Vicente 8 – Edificio Albia I, Bilbao, Spain. *iastigarraga@consorciodeaguas.eus

   Competing interests: The author has declared that no competing interests exist.

   Academic editor:  Carloz N. Díaz

   Content quality: This paper has been peer-reviewed by at least two reviewers. See scientific committee here

   Citation: I. Astigarraga, A. López, J.J. Martínez, F. Ortega, U. Sagasti, 2021, Odour Reduction In A High Salt Intrusion Sanitation System, 9th IWA Odour& VOC/Air Emission Conference, Bilbao, Spain, Olores.org.

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   ISBN: 978-84-09-37032-0

   Keywords: Sea intrusion, SH2, pump reprogramming, CFD, odor containment, biotrickling filter, activated carbon

Abstract

   The Ondarroa WWTP receives wastewater with a very significant saline load due to marine intrusion and discharges from canning industries. The high levels of SH2 in the network and in the WWTP cause serious problems of security, odor and equipment degradation. To solve this, different actions have been taken on the network, reducing sulfates at source through separation of networks, reprogramming of pumping and improvements in waste management in canning plants. In the WWTP, the water sheets have been confined, the filter presses have been replaced with centrifuges, the interior ventilation has been modelled using CFD and a deodorization consisting of two stages (biotrickling + activated carbon) has been installed for confined atmospheres and one stage (activated carbon) for ambient air.

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