Journal
ENGENHARIA SANITARIA E AMBIENTAL
Volume 14, Issue 3, Pages 353-362Publisher
ASSOC BRASILEIRA ENGENHARIA SANITARIA AMBIENTAL
DOI: 10.1590/S1413-41522009000300009
Keywords
ammonia; Conama Resolution 357/2005; Conama Resolution 397/2008
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This paper discusses the Brazilian National Council legislation (Resolutions 357/2005 and 397/2008) standards for ammonia composts in water and Standards indicated by resolutions are compared to those from previous Conama Resolution 20/1986 and with North American standards. It is concluded the new ammonia limit concentrations, from Resolution 357/2005 for water bodies and industrial effluents and the elimination of effluent concentration for sanitary effluents, by Resolution 397/2008, represent an advance over previous Brazilian standards by considering the pH influence on the distribution toxicity of ammonia composts, increasing the maximum total ammonia concentration for industrial effluents and eliminating maximum total concentration for sanitary effluents. However, the Resolution 357/2005 does not take into account temperature influence on these distribution and toxicity.
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