%0 Journal Article
%T Influence of wastewater treatment level on the seawater quality in the discharge region of Santos Submarine Outfall
%A Eduardo Lucas Subtil
%A Jos¨¦ Carlos Mierzwa
%A Jayme Pinto Ortiz
%J Ambiente e ¨˘gua : An Interdisciplinary Journal of Applied Science
%D 2012
%I Instituto de Pesquisas Ambientais em Bacias Hidrogr¨˘ficas (IPABHi)
%X This study aimed to evaluate if in the case of the Santos Submarine Outfall (SSO) there was any environmental benefits relative to potential eutrophication if instead of the primary treatment a CEPT, ST-AS or a TT- ASNR was used. The environmental impact of wastewater discharge through the SSO with an average flow of 5,3 m3.s-1 was evaluated using an eutrophication numerical model which solves the two-dimensional vertically integrated hydrodynamic and transport equation. Wastewater mixing conditions in the near field plume was evaluated using the software CORMIX, and the results were coupled to a far-field model considering the conservation of mass flow. The results demonstrate that the use of a secondary treatment with partial ammonia oxidation promotes a reduction of only 30% in the chlorophyll-a, while the use of a CEPT with phosphate removal promotes a better environmental response, resulting in chlorophyll-a concentration reduction of 69%, similar results were obtained when tertiary treatment was considered for nitrogen and phosphorus removals.
%K Santos submarine outfall
%K wastewater treatment level
%K eutrophication numerical model
%U http://www.ambi-agua.net/seer/index.php/ambi-agua/article/view/975