Premium
Optimisation of an industrial wastewater decontamination plant: An environment‐oriented approach
Author(s) -
Charles Jérémie,
Crini Grégorio,
Bradu Corina,
Torri Giangiacomo,
Gavoille Sophie,
Sancey Bertrand,
MorinCrini Nadia,
Trunfio Giuseppe,
Badot PierreMarie,
Winterton Peter,
Lagarrigue Céline
Publication year - 2014
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21857
Subject(s) - effluent , wastewater , pollutant , human decontamination , bioassay , environmental science , pollution , germination , sewage treatment , pulp and paper industry , waste management , environmental engineering , chemistry , agronomy , biology , engineering , ecology , organic chemistry
Over a period of 24 months of operation, we optimised a physicochemical plant for the decontamination of surface treatment industrial wastewater. This article presents the abatements obtained in the levels of chemical pollution after the various optimisations validated in the laboratory and then transposed to the industrial site. The optimisation of the plant reduced the effluent organic load, nitrite and zinc levels by about 70%, 85% and 80%, respectively. To evaluate the utility of each optimisation proposal, standard bioassays based on lettuce seed germination were carried out on the final effluent. Decreasing concentrations of pollutants in the effluent led to a reduction of its impact on seed germination. The bioassays confirmed the environmental benefits obtained from the optimisation of the treatment plant. The biological tests proposed seem to be good indicators of the contaminant concentrations present in wastewater.