N removal in the presence of heavy metals

Scope: Tannery

Results: High ammonium and chromium concentrations in an industrial effluent commonly led to malfunctioning in the  biological process of a WWTP. In order to optimize this treatment, a redistribution of the operation sequence of the biological reactors was developed, which allowed for the efficient biological elimination of nitrogen at temperatures below 15 ° C, even in the presence of toxic/inhibitory compounds.

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