One in every five households the United States of America operates a decentralized water treatment systems which is also know as septic system, may contribute to pollutions bodies if not operated properly. For this research 15.0-liter (3.97 gal.) laboratory benchtop system was designed, build, installed and at temperature 23.0°C (73.4°F) investigate remediation municipal wastewater. A three-wee...

Résumé Abstract Le plus souvent reconnu comme un associé de la médecine et des organismes de règlementation de la recherche biomédicale, le domaine de la bioéthique a récemment élargi sa compétence académique pour inclure un rôle croissant dans les processus de décision dans des contextes de politiques de santé. Grâce à cette expansion, les professionnels de la santé et les administrateurs sont...

La flexibilité conditionnelle dans le domaine de la sécurité coopérative et défense au sein l’Union Européenne (UE) renvoie à l’idée volontariat souveraineté des États. Ces derniers sont les maîtres du jeu refus s’engager repose sur nombreuses motivations : ou peur grimper terrain, d’être emporté par une opinion publique interventionniste, absence d’intérêts stratégiques, géopolitiques économiq...

Nitella sonderi A.Braun (Charales, Charophyceae) – un nouvel enregistrement pour l'Amérique du Sud, et premier signalement en dehors de l'Australie. est nouvellement signalée sur le plateau patagonien, Argentine. Cette espèce n'était connue manière fiable que d'Australie. Les études morphologiques génétiques menées ici n'ont révélé aucune différence entre les spécimens argentins australiens. L'...

This paper aims to contribute to the attempts to clarify and classify the vague notion of ‘‘technosciences’’ from a historical perspective. A key question that is raised is as follows: Does Francis Bacon, one of the founding fathers of the modern age, provide a hitherto largely undiscovered programmatic position, which might facilitate a more profound understanding of technosciences? The paper ...

The increasingly more stringent phosphorus (P) discharge limits, which are below the concentrations reliably achievable with currently available technologies, demand for better understanding of phosphorus removal mechanisms. This study investigated the compositional fractions of phosphorus (P) in various effluents as well as the efficacy of different levels of treatment processes for removing d...

secondary clarifiers with large areas are widely applied in wastewater treatment plants. a pilot study was conducted to examine the possibility of applying one and two-stage inclined tube settlers instead of conventional secondary clarifiers. tube diameter in the first stage of the two-stage settler was wide as the conventional ones, but in the second stage, it was narrow to improve the efficie...

In water- and wastewater-treatment processes, knowledge of sludge settlement behavior is a key requirement for proper design continuous clarifier or thickener. One the most robust practical tests to acquire information about rate sedimentation through execution batch settling tests. lieu conducting series various initial concentrations, it promising advantageous develop simple predictive models...