Adjustable inlet for waste water treatment apparatus

Liquid purification or separation – Processes – Separating

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Details

210162, 210747, 210170, 405 87, 405 90, E02B 508, B01D 3502

Patent

active

058955798

ABSTRACT:
A method and apparatus for controlling the fluid flow through a waste fluid inlet channel, such as for a sewage treatment plant, includes a weir that may be inserted into the channel. The weir may be one or more plates that serve to reduce the effective cross section of the channel. The plates may be shaped so that the channel is more restricted at greater depths, or may be combined to form such other shape, in order to provide desirable flow patterns. Plates may be added, removed, or exchanged with different sized plates, to accommodate a range of fluid volume at a desired flow rate. The plates may combine with a bar rack, and will not interfere with the cleaning thereof. The plates may be positioned to allow grit to flow through without impediment.

REFERENCES:
patent: 207955 (1878-09-01), Downs
patent: 320545 (1885-06-01), Doughton
patent: 1006730 (1911-10-01), Dougherty
patent: 1348554 (1920-08-01), Dringman
patent: 1920158 (1933-07-01), Albertson
patent: 1966628 (1934-07-01), Johnson
patent: 2025722 (1935-12-01), Camp
patent: 2199788 (1940-05-01), Durdin
patent: 2291121 (1942-07-01), Tolman
patent: 3190448 (1965-06-01), Johnston
patent: 5795467 (1998-08-01), Schloss

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