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Villeurbanne, France

Harpet C.,University of Paris Pantheon Sorbonne | Harpet C.,EHESP School of Public Health | Gully E.,A3i Innovation Enterprise | Blavot C.,University Paris Est Creteil | And 2 more authors.
Progress in Industrial Ecology | Year: 2013

The Chemical Valley in France, a territory composed of various industrial platforms, is facing sustainability challenges. These business parks are located in the vicinity of strategic resources (water networks, pipeline networks). Their organisation allows the pooling of services, equipment and resources. Industrial ecology reveals existing and potential industrial synergies. Environmental management services within companies include facility and employee safety, waste management and effluent treatment; however, they do not develop local trade. The aim of the research conducted on an industrial consortium is to create and strengthen synergies between willing industrial entrepreneurs by testing various decision support tools. The proposed methodology in industrial ecology consists in identifying the various flows, defining collective action strategies, then comparing synergy scenarios using a multi-criteria analysis (acid-base exchange, wastewater sludge valorisation). Copyright © 2013 Inderscience Enterprises Ltd. Source

Gonzalez-Merchan C.,University of Lyon | Gonzalez-Merchan C.,INSA Lyon | Perrodin Y.,University of Lyon | Sebastian C.,INSA Lyon | And 3 more authors.
Water Science and Technology | Year: 2014

Retention-detention basins are important structures for managing stormwater. However, their long-term operation raises the problem of managing the sediments they accumulate. Potential uses for such sediments have been envisaged, but each sediment must be characterised beforehand to verify its harmlessness. In this paper we address this issue through the development of a battery of bioassays specifically adapted to such sediments. We tested the method on samples taken from four retention basins in the region of Lyon (France). This battery focuses on the toxic effects linked to both the solid phase (ostracod and Microtox® solid-phase tests) and the liquid-phase (interstitial water) of sediments (rotifer and Microtox® liquid-phase tests). The results obtained permit the sorting of sediments presenting little toxicity, and which could therefore be potentially exploitable, from those from more polluted areas presenting higher toxicity that limits their use. © IWA Publishing 2014. Source

Becouze-Lareure C.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Thiebaud L.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Bazin C.,INSAVALOR | Namour P.,CNRS Institute of Analytical Sciences | And 3 more authors.
Science of the Total Environment | Year: 2016

Combined Sewer Overflows (CSO) in small peri-urban streams and rivers are potentially toxic for their biocenosis. Improving the management of CSO discharges requires better knowledge of their dynamics and toxicity. In view to characterizing this toxicity, we sampled the different compartments (benthic and hyporheic zone) of a peri-urban stream located near the city of Lyon in France. The samples were taken at different distances from a CSO and at three period characteristic of different hydrological conditions. Their toxic effects were assessed by bioassays on the dissolved fraction (D. magna, V. fisheri and B. calyciflorus bioassays) and on the particle fraction (V. fisheri and H. incongruens bioassays). The results highlighted significant toxicity of the particulate fraction for the benthic and hyporheic samples, in particular downstream of the CSO, but with high spatio-temporal variability. This variability can first be attributed to the variability of CSO discharge sampling as a function of season and rainfall, and the dynamics of polluted particles (trapping of transported particles in infiltration zones, mobilization during floods). These parameters play a fundamental role in the distribution of pollutants according to the geomorphology of stream facies. Regarding dissolved pollutants, the chemical exchanges taking place at the "water-sediment" interface trigger the transfer of pollutants from one phase to another, after which the dispersion of these pollutants is governed by hydraulic flows. Finally, critical zones and periods are identified for the peri-urban river toxicity studied: benthic sediments under mean flow downstream; hyporheic sediments after a storm event downstream, close to the CSO. Recommendations are made on the basis of the knowledge obtained to optimize the management of these discharges. © 2015 Elsevier B.V. Source

Perrodin Y.,University of Lyon | Volatier L.,University of Lyon | Bazin C.,INSAVALOR | Boisson J.-C.,University of Lyon
Environmental Science and Pollution Research | Year: 2013

Discharges of saline effluents into rivers can lead to risks for local aquatic ecosystems. A specific ecological risk assessment methodology has been developed to propose a management tool to organisations responsible for managing rivers and industrial companies producing saline effluents. This methodology involves the detailed description of the spatiotemporal system concerned, the choice of ecological targets to be preserved, and the performance of bioassays adapted to each of the compartments of the river. Following development, it was applied to an industrial effluent in eastern France. For the scenario studied, results obtained suggest a high risk for the organisms of the water column and a low risk for the organisms of the periphyton. This difference can be explained by the structure of the latter which integrate extracellular polymers secreted by the organisms of the biofilm, forming a gel with a porous structure that acts as a barrier to diffusion. The methodology formulated permitted identifying the critical points of the spatiotemporal system studied and then using them as the basis for making well-grounded proposals for management. Lastly, proposals to improve the methodology itself are made, especially concerning the integration of the sediment compartment in the version formulated initially. © 2012 Springer-Verlag. Source

Angerville R.,University of Lyon | Angerville R.,Quisqueya University | Perrodin Y.,University of Lyon | Bazin C.,INSAVALOR | Emmanuel E.,Quisqueya University
International Journal of Environmental Research and Public Health | Year: 2013

Discharges of Combined Sewer Overflows (CSOs) into periurban rivers present risks for the concerned aquatic ecosystems. In this work, a specific ecotoxicological risk assessment methodology has been developed as management tool to municipalities equipped with CSOs. This methodology comprises a detailed description of the spatiotemporal system involved, the choice of ecological targets to be preserved, and carrying out bioassays adapted to each compartment of the river receiving CSOs. Once formulated, this methodology was applied to a river flowing through the outskirts of the city of Lyon in France. The results obtained for the scenario studied showed a moderate risk for organisms of the water column and a major risk for organisms of the benthic and hyporheic zones of the river. The methodology enabled identifying the critical points of the spatio-temporal systems studied, and then making proposals for improving the management of CSOs. © 2013 by the authors; licensee MDPI, Basel, Switzerland. Source

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