Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Channels and pipes with spatially decreasing flows in environmental engineering applications, referred to as distribution or dispersion conduits, are addressed in this chapter. The methods presented are applied to unit processes of many types, including influent channels to parallel water or wastewater treatment units, chemical solution diffusers, spray water (foam control) systems, air manifolds, filter bottoms (during backwashing), chlorine generation electrolysis units, filter manifolds, sprinkler systems, and outfall diffusers. Uniformity of distribution is generally desired, in order to assure efficient use of the product being distributed or assure that each parallel unit plays a nearly equal part in a treatment process. The ideal distribution conduit will discharge its fluid via gates, orifices, branch pipes, nozzles, gas diffusers, weirs or other outlet devices at the same rate per unit outlet. For a real distribution conduit, the head available for discharge varies along the conduit, causing some degree of nonuniformity in the distribution. The two fundamental ingredients of the theory of distribution conduits, the distribution principle and the differential equation for spatially‐decreasing flow, are examined together with their use in design. Criticism is given of erroneous methods of design of wastewater pressure‐distribution systems presented in numerous references.
Channels and pipes with spatially decreasing flows in environmental engineering applications, referred to as distribution or dispersion conduits, are addressed in this chapter. The methods presented are applied to unit processes of many types, including influent channels to parallel water or wastewater treatment units, chemical solution diffusers, spray water (foam control) systems, air manifolds, filter bottoms (during backwashing), chlorine generation electrolysis units, filter manifolds, sprinkler systems, and outfall diffusers. Uniformity of distribution is generally desired, in order to assure efficient use of the product being distributed or assure that each parallel unit plays a nearly equal part in a treatment process. The ideal distribution conduit will discharge its fluid via gates, orifices, branch pipes, nozzles, gas diffusers, weirs or other outlet devices at the same rate per unit outlet. For a real distribution conduit, the head available for discharge varies along the conduit, causing some degree of nonuniformity in the distribution. The two fundamental ingredients of the theory of distribution conduits, the distribution principle and the differential equation for spatially‐decreasing flow, are examined together with their use in design. Criticism is given of erroneous methods of design of wastewater pressure‐distribution systems presented in numerous references.
Distribution Conduits
Graber, S. David (Autor:in)
24.12.2024
28 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Distribution conduits , distribution principle , distribution uniformity , dosing siphons , Kármán vortex street , open channel flow , outlet controls , pressure distribution , rectangular weir outlets , rotating manifolds , slope invariance for pressure conduits , spatially‐decreasing flows , tapered conduits , triangular weir outlets
| Online Contents | 1999
Engineering Index Backfile | 1885
| Wiley | 2024
| Online Contents | 2002
| Taylor & Francis Verlag | 2002