L’annee 2018 a ete marquee par la denonciation, parfois virulente, de pratiques qualifiees “violences gynecologiques et obstetricales”. Ce denominatif recouvre une grande variete d’actes comportements. Un projet recherche propose recenser categoriser ces situations dans le champ du droit. L’objectif est clarifier cadre normatif existant, permettre fonder les recours eventuels de patientes secur...

CFD modeling was used to design a simple modification to one of four compartments of a Dorr 444 clarifier at Maidstone. The model was validated via tracer testing but the best validation would be implementation of the modification. The modification consisting of a system of two baffles was installed during the season and results in terms of clear juice absorbances were obtained. There was a cle...

Rheological behaviour of recycled sludge from a secondary clarifier of a municipal wastewater treatment plant was studied by using the rate controlled coaxial cylinder viscometer Rotovisko-Haake 20, system M5-osc., measuring device NV. The tests (hysteresis cycles) were performed under continuous flow conditions and following an ad hoc measurement protocol. Sludge shear stress versus shear rate...

The membrane biofilm reactor (MBfR) a novel bioreactor that provides gaseous substrates directly to a biofilm growing on the membrane surface, avoiding the need for sparging. MBfRs are not membrane bioreactors (MBRs), where membranes separate suspended solids from the effluent water, substituting for a clarifier. In MBfRs, a gaseous substrate moves across the membrane. Since the MBfR membranes ...

Introduction raised to 8.0. The results obtained are tabulated in Table I1 and indicate that the purity drop was 0.9 The first Part of this Paper deals with the reduction less than for the same period in the first experiment, of sucrose losses in the clarifier during hours of when the temperature was not lowered nor the pH stoppage. The second part describes experiments raised. carried out to p...

RÉSUMÉ. Cet article porte sur les objets et dossiers pédagogiques et s’appuie pour cela sur un standard d’indexation des objets pédagogiques en cours de finalisation : le LOM. La notion d’objet pédagogique est au cœur de nombreuses réalisations dont certaines sont examinées ici en vue de clarifier ce concept. L’idée de dossier pédagogique est pour sa part absente du LOM, mais des pistes sont pr...

Microbial fuel cells (MFCs) are devices that exploit microorganisms as biocatalysts to recover energy from organic matter in the form of electricity. One of the goals of MFC research is to develop the technology for cost-effective wastewater treatment. However, before practical MFC applications are implemented it is important to gain fundamental knowledge about long-term system performance, rep...

This paper examines the effect of different model assumptions when describing biological nutrient removal (BNR) by the activated sludge models (ASM) 1, 2d & 3. The performance of a nitrogen removal (WWTP1) and a combined nitrogen and phosphorus removal (WWTP2) benchmark wastewater treatment plant was compared for a series of model assumptions. Three different model approaches describing BNR are...