[ES] Uno de los principales problemas que puede conllevar el vertido de aguas residuales sin tratar es la eutrofización de la zona, este fenómeno se produce por un excesivo vertido de nutrientes (N y P) en las aguas naturales lo que a su vez provoca el crecimiento masivo de algas y plantas reduciendo el oxígeno disuelto disponible en el medio. Por ...
International audience
Published in Water science and technology : a journal of the International Association on Water Pollution Research
On-site wastewater treatment systems are approved by the French regulation based on the results of platform tests following the European standard NF EN 12566-3. In addition to this approval for the treatment system, at least 90% of outlet concentrations have to be below 30 mg L-1 for total suspended solids (TSS) and 35 mg L-1 for biochemical oxygen...
To understand the full value of Resource Recovery and Reuse (RRR), a systematic assessment approach that balances complexity with practicality is required. This report highlights the methods available for quantifying and valuing social, environmental and economic costs and benefits of RRR, focusing on Cost-Benefit Analysis (CBA) as the primary fram...
Water and nutrition are linked in multiple ways, but few of these interlinkages are well understood. What is, for example, the exact relationship between water pollution and health or between water resource management and nutrition? Even less is known about the interactions across these various linkages. The importance of better understanding these...
Published in Bioresource technology
Swine wastewater was treated in two continuously aerated activated sludge (AS) systems at high (AS1: 1.7-2.6 mg/L) and low (AS2: 0.04-0.08 mg/L) dissolved oxygen (DO), and at three temperatures (10, 20, and 30 °C). Biochemical oxygen demand (BOD) removal was >94.8%. Meanwhile, total nitrogen (N) removal was significantly higher in AS2, at 64, 89, a...
Driving from advances of two main projects in France (AMPERES and ARMISTIQ), this paper covers the recommendations for sampling and analytical methods for the quantification of priority and emerging micropollutants concentrations and fluxes in wastewaters and sludge, and addresses a new methodology for assessing robust micropollutant removal effici...
The biological filter treatment process – i.e. Biofilters - is fixed-bed biofilm reactors using expanded clay or polystyrene materials (Fig. 1a). It aims to filtration of particles, and biological conversion of pollutants, with removal of carbon, ammonia (nitrification) or nitrate (denitrification). It is used in more than 300 plants around the wor...
Published in The Science of the total environment
Constructed wetlands are currently recognized as an effective environmental biotechnology for wastewater treatment, but the influence of their design parameters on internal functioning and contaminant removal efficiency is still under discussion. In this work, the effect of aspect ratio and water depth on bacteria communities as well as treatment e...
BACKGROUND: The cake industry produces a heavily polluted wastewater that is characterized by high amounts of suspended solids, lipids, chemical oxygen demand (COD), biochemical oxygen demand (BOD5) and nitrogen components. In this study, assessment of the efficiency of a non-inoculated self-aerated immobilized biomass (SAIB) reactor for post-treat...
