초록 ▼

The clarifier of the present invention includes a tank, an influent pier, and a FEDWA. The tank that includes a bottom and a wall. The influent pier projects upwardly from the bottom of the tank along an axis. The influent pier includes ports that direct flow of the solution outwardly from the influ

The clarifier of the present invention includes a tank, an influent pier, and a FEDWA. The tank that includes a bottom and a wall. The influent pier projects upwardly from the bottom of the tank along an axis. The influent pier includes ports that direct flow of the solution outwardly from the influent pier. The FEDWA separates the flow of the solution that is discharged by the ports and that flows into the tank. The separated flow of the solution includes a first flow portion that is directed in a first direction that is generally tangential with respect to the axis of the influent pier, a second flow portion that is directed in a second direction that is opposite to the first direction of the first flow portion, and a third flow portion that is directed in a third direction toward the axis.

대표청구항 ▼

The clarifier of the present invention includes a tank, an influent pier, and a FEDWA. The tank that includes a bottom and a wall. The influent pier projects upwardly from the bottom of the tank along an axis. The influent pier includes ports that direct flow of the solution outwardly from the influ

The clarifier of the present invention includes a tank, an influent pier, and a FEDWA. The tank that includes a bottom and a wall. The influent pier projects upwardly from the bottom of the tank along an axis. The influent pier includes ports that direct flow of the solution outwardly from the influent pier. The FEDWA separates the flow of the solution that is discharged by the ports and that flows into the tank. The separated flow of the solution includes a first flow portion that is directed in a first direction that is generally tangential with respect to the axis of the influent pier, a second flow portion that is directed in a second direction that is opposite to the first direction of the first flow portion, and a third flow portion that is directed in a third direction toward the axis. 0. The antenna of claim 9, wherein said gradation continuously varies along at least a portion of said length of said feed line.11. The antenna of claim 1, wherein said substrate comprises meta-materials.12. The antenna of claim 1, wherein said first relative permeability is approximately equal to the square root of said first relative permittivity.13. The antenna of claim 3, wherein said feed line has an electrical width that increases substantially logarithmically outward from at least one feedpoint of said LPDA.14. The antenna of claim 13, wherein a physical width of said feed line increases in a non-substantially logarithmic manner.15. The antenna of claim 1, wherein said substrate has a substantially uniform thickness, further comprising a substantially planar ground plane disposed beneath said substrate, wherein said LPDA is a planar array.16. The antenna of claim 15, wherein a relative permittivity of said substrate beneath said feed line increases as said feed line moves out from a feed point of said LPDA.17. The antenna of claim 16, wherein said relative permittivity increase is linearly graded.18. The antenna of claim 16, wherein said relative permittivity increase is stepped.19. A log periodic dipole array (LPDA) antenna, comprising: a dielectric circuit board substrate, said substrate having at least a first portion, said first portion providing at least one of a first relative permeability and a first relative permittivity, said first relative permeability and said first relative permittivity being different from a bulk portion of said substrate; and at least one feed line and a plurality of dipole elements electrically connected to said feed line, at least a portion of said dipole elements disposed on said first portion; wherein said first relative permeability is from about 4 to 116. 20. A log periodic dipole array (LPDA) antenna, comprising: a dielectric circuit board substrate, said substrate having at least a first portion, said first portion providing at least one of a first relative permeability and a first relative permittivity, said first relative permeability and said first relative permittivity being different from a bulk portion of said substrate; and at least one feed line and a plurality of dipole elements electrically connected to said feed line, at least a portion of said dipole elements disposed on said first portion; wherein at least a portion of said feed line is disposed on a second portion of said substrate, said second portion providing at least one of a second relative permeability and a second relative permittivity different from said bulk portion of said substrate and said second relative permeability is from about 4 to 116. 21. A log periodic dipole array (LFDA) antenna, comprising: a dielectric circuit board substrate, said substrate having at least a first portion, said first portion providing at least one of a first relative permeability and a first relative permittivity, said first relative permeability and said first relative permittivity being different from a bulk portion of said substrate; and at least one feed line and a plurality of dipole elements electrically connected to said feed line, at least a portion of said dipole elements disposed on said first portion; wherein said first relative permeability is approximately equal to the square root of said first relative permittivity.