Évaluation technique, économique et environnementale de procédés de traitement complémentaire avancés pour l’élimination des micropolluants

Besnault, S.; Martin-Ruel, S.; Baig, Sylvie; Heiniger, B.; Esperanza, M.; Budzinski, H.; Miège, Cécile; Ménach, Karyn Le; Dherret, L.; Roussel-Galle, A.; Coquery, Marina

doi:10.1051/tsm/201503067

Cited by 10 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After a research and development phase of almost two decades, − the Swiss authorities decided to upgrade about 15% of the country’s municipal wastewater treatment plants to reduce the load of organic micropollutants to the aquatic environment. − This development was triggered by detection of pharmaceuticals, endocrine disruptors and personal care products in municipal wastewater effluents, − combined with ecological studies suspecting/demonstrating the effect of endocrine disruptors on fish populations. − In Germany and France similar approaches are currently being assessed. ,,− Overall, the European approach is guided by mostly ecological concerns, with an added benefit for drinking water, which is often abstracted from rivers (i.e., riverbank filtration) downstream of wastewater effluent discharges.…”

Section: An Unexpected Revival Of Oxidation Processes With a Signific...mentioning

confidence: 99%

Oxidation Processes in Water Treatment: Are We on Track?

Gunten

2018

Environ. Sci. Technol.

530

247

View full text Add to dashboard Cite

Chemical oxidants have been applied in water treatment for more than a century, first as disinfectants and later to abate inorganic and organic contaminants. The challenge of oxidative abatement of organic micropollutants is the formation of transformation products with unknown (eco)toxicological consequences. Four aspects need to be considered for oxidative micropollutant abatement: (i) Reaction kinetics, controlling the efficiency of the process, (ii) mechanisms of transformation product formation, (iii) extent of formation of disinfection byproducts from the matrix, (iv) oxidation induced biological effects, resulting from transformation products and/or disinfection byproducts. It is impossible to test all the thousands of organic micropollutants in the urban water cycle experimentally to assess potential adverse outcomes of an oxidation. Rather, we need multidisciplinary and automated knowledge-based systems, which couple predictions of kinetics, transformation and disinfection byproducts and their toxicological consequences to assess the overall benefits of oxidation processes. A wide range of oxidation processes has been developed in the last decades with a recent focus on novel electricity-driven oxidation processes. To evaluate these processes, they have to be compared to established benchmark ozone- and UV-based oxidation processes by considering the energy demands, economics, the feasibilty, and the integration into future water treatment systems.

show abstract

Section: An Unexpected Revival Of Oxidation Processes With a Signific...mentioning

confidence: 99%

Oxidation Processes in Water Treatment: Are We on Track?

Gunten

2018

Environ. Sci. Technol.

530

247

View full text Add to dashboard Cite

show abstract

“…22 O 3 and chlorinated oxidants, it can decrease AMPA oxidation (Besnault et al 2015;Jönsson et al 2013). Besnault et al (2015) showed that a granular activated carbon (GAC) treatment process has good initial efficiency in terms of AMPA removal (>90%). However, from 2.5 m of treated water per kg of GAC, the pilot performance falls to 30-70% of elimination, and less than 30% beyond m /kg GAC.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

AminoMethylPhosphonic acid (AMPA) in natural waters: Its sources, behavior and environmental fate

Piel²,

2017

View full text Add to dashboard Cite

The widely occurring degradation product aminomethylphosphonic acid (AMPA) is a result of glyphosate and amino-polyphosphonate degradation. Massive use of the parent compounds leads to the ubiquity of AMPA in the environment, and particularly in water. The purpose of this review is to summarize and discuss current insights into AMPA formation, transport, persistence and toxicity. In agricultural soils, AMPA is concentrated in the topsoil, and degrades slowly in most soils. It can reach shallow groundwater, but rarely managed to enter deep groundwater. AMPA is strongly adsorbed to soil particles and moves with the particles towards the stream in rainfall runoff. In urban areas, AMPA comes from phosphonates and glyphosate in wastewater. It is commonly found at the outlets of Wastewater Treatment Plants (WWTP). Sediments tend to accumulate AMPA, where it may be biodegraded. Airborne AMPA is not negligible, but does wash-out with heavy rainfall. AMPA is reported to be persistent and can be biologically degraded in soils and sediments. Limited photodegradation in waters exists. AMPA mainly has its sources in agricultural leachates, and urban wastewater effluents. The domestic contribution to urban loads is negligible. There is a critical lack of epidemiological data - especially on water exposure - to understand the toxicological effects, if any, of AMPA on humans. Fortunately, well operated water treatment plants remove a significant proportion of the AMPA from water, even though there are not sufficient regulatory limits for metabolites.

show abstract

“…For an effective removal of MPs, the hydraulic retention time (or "empty bed contact time", EBCT) of the reactor should be of 20-30 minutes (Böhler et al 2020, Fundneider et al 2020 for the maximum flow that has to be treated. Shorter contact times were also found effective in some cases (Besnault et al, 2015). When the GAC filter is saturated, it requires regeneration of the sorbent.…”

Section: Processes Based On Adsorptionmentioning

confidence: 98%