Pre-sedimentation basins are among the most important elements of the conventional water treatment process. In pre-sedimentation basins, due to different velocity gradients, secondary and rotational flows are formed that will create short paths and increase dead and still flow zones as well as changes in the flow mixing. This will prevent laminar flow conditions for sedimentation and will reduc...

The Portofino Conglomerate (PC) cropping out in the Eastern Liguria is an approximately 500 m thick, very gently folded succession mainly composed of poorly bedded and mostly matrix-supported conglomerates. It stratigraphically rests on Helminthoid Flysch (UA3) thrusted onto Antola Unit. We vertically distinguished three ruditic litho/petrofacies: (i) Paraggi (fP) with carbonate clasts from suc...

We describe an immunoassay of digoxin that exploits the differential sedimentation rate between two types of latex particles in a microcentrifugal analyzer. Conventional polystyrene latex particles (relative density = 1.05), sensitized with antibody, are first suspended with the sample and then mixed with digoxin-sensitized latex particles (relative density = 1.5). In the absence of digoxin in ...

One of the main sources drinking water commonly used as raw is river water. This study aims to analyze efficiency Water Treatment Plant using electrocoagulation techniques with modification sedimentation unit reduce turbidity concentration in The treatment methods without chemicals such an alternative that being developed a more efficient treatment. was conducted by testing sample into Communal...

Hydrogen sulphide is a toxic gas, it can cause range of physiological responses from simple annoyance to permanent injury and death. There are number approaches deal with the impacts gases. This study focused on minimizing hazard exposure for hydrogen sulfide in different operational zones activated sludge process sewage waterplant. Research tools/ conducted were interviews, gas testers, analys...

sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...

The purpose of the flocculation operation is not only to remove substance causing turbidity, but also give particles with ability be trapped in subsequent operations. This paper discusses process generating floc, sedimentation characteristics, separation effect and so on, when macromolecule heavy metal flocculant CSAX used water treatment, especially for ions turbidity coexisting system. resear...

Benyesh-Melnick, Matilda (Baylor University College of Medicine, Houston, Tex.), Fern Probstmeyer, Robert McCombs, Jean P. Brunschwig, and Vladimir Vonka. Correlation between infectivity and physical virus particles in human cyto-megalovirus. J. Bacteriol. 92:1555-1561. 1966.-Infectivity titers [measured as plaque-forming units (PFU)] and particle counts by the sedimentation pseudo-replication ...