Double-rack grating for use in wastewater

Details Double-rack grating for use in wastewater Double-rack grating for use in wastewater

1988-05-06

1990-05-01

Fisher, Richard V.

Liquid purification or separation

Structural installation

Flume stream type

210499, 210498, B01D 3910

Patent

active

049215990

ABSTRACT:
A double screen or double-rack grate for use in the extra-fine screening of waste waters includes two rows of rods in laterally staggered arrangements with one row positioned behind the other in the direction of flow of waste water to be screened. Each rod of one row has a hydrodynamic cross section defined by a thickened head portion. Such row of rods is positioned downstream of a first row of rods including rods with substantially rotationally symmetrical cross sections.

REFERENCES:
patent: 1717313 (1929-06-01), D'Olier
patent: 2271662 (1942-02-01), Rubissow
patent: 3037630 (1959-01-01), Bixby
patent: 3169111 (1965-02-01), Rose et al.
patent: 3716144 (1973-02-01), Bartlow
patent: 3934521 (1976-01-01), Andreoli
patent: 4184957 (1980-01-01), Botsch

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