A prerequisite for an integrated control of sewer and wastewater treatment plant (WWTP) is a capacity driven inflow control to WWTP. This requires reliable information about the current status of WWTP operation and its behaviour on varying hydraulic, COD and nutrient loads. So far most of the proposed control strategies are based on hypothetical modelling studies. In this paper the behaviour of...

Suite à une journée thématique « Service et expertise par les sciences archéologiques de la conservation » organisée le réseau CAI-RN (Compétences Archéométriques Interdisciplinaires – Réseau National, MITI CNRS) membres du Comité Pilotage ayant participé cette ont souhaité rassembler clarifier dans ce texte un certain nombre des points évoqués lors discussions. Ceci en donnant notamment brève ...

The paper outlines a method to determine the sedimentation efficiency in modernized tanks with incorporated lamella packets. The method takes into account the properties of the suspension (density, viscosity, solid phase distribution) and tank design parameters – flow intensity and settling surface. Several types of grain size distributions are considered: the log-normal distribution and genera...

Geochemical equilibrium speciation modeling was used to determine optimum conditions for precipitation of magnesium ammonium phosphate, or struvite, for the recovery of nutrients from anaerobically digested wastes. Despite a wide range of pH values with the potential to precipitate struvite, the optimum pH was determined to be 9.0. Bench experiments conducted on effluent from an anaerobic seque...

astewaters from all processes w are collected by gravity flow into acid-alkali (rinses), chromate, cyanide, spenttstripping acids, and cleaner sumps. The acid concentrates and cleaner concentrates are gradually fed into chromate and acid-alkali (rinse) sumps, respectively. Cyanide destruction is achieved by oxidation with sodium hypochlorite whereas hexavalent chrome is reduced to trivalent chr...

Abstract. The process of continuous sedimentation of particles in a liquid has often been predicted by means of operating charts and mass-balance considerations, where the underlying constitutive assumption is the one by Kynch. Much more complex operating charts (concentration-flux diagrams) can be obtained from a onedimensional model of an ideal continuous clarifier-thickener unit. The enginee...

Membrane bioreactor technology represents the most rapidly growing membrane technology in the water sector. In recent years, MBR technologies have been playing a very important role in water and wastewater treatment. MBRs are used to treat a wide range of municipal and industrial wastewaters. MBR integrates membrane filtration with biological degradation system of waste products. It is defined ...

Interpreters improve access to care for patients with limited English proficiency (LEP), but some studies have reported poorer cultural understanding, relationship quality, and patient satisfaction than language-concordant care. Use of interpreter roles beyond linguistic conversion (clarifier, broker, or advocate/mediator) may enhance interpreter-mediated by improving understanding the therapeu...