US 4,233,159 AGranted

Solid-liquid separation element and apparatus

AssigneeToray Industries, Inc.

InventorsTeruo Senda, Mitsunobu Otani

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Abstract

A solid-liquid separation element which remarkably, improves the solid-liquid separation capacity of a solid-liquid separation device having the separation element therein is provided. In this separation element, guide members for accelerating the through-flow of the liquid are mounted on the back surface of a stationary inclined screen and, optionally, guide members for transporting solid materials are arranged on the surface of the screen so as to be substantially in parallel to each other and in a downward inclining direction from both edges of the screen. The solid-liquid separation apparatus having said separation element and a cleaning brush which is reciprocated in rubbing contact with the back surface of the screen is also provided. The range of the reciprocating motion of the brush is more than the width of the screen.

Claims8

Dependent claims

A solid-liquid separation apparatus for use in the treatment of waste water comprising:

(a) a solid-liquid separation element composed of a screen having a plurality of openings therein and guide members mounted on the back surface of said screen for accelerating the through-flow of the liquid, which is conveyed along the back surface of said screen, said guide member being mounted so that S.sub.2 satisfies the equation
S.sub.2 /sin .theta.<W.sub.2 .multidot.cos .theta.
wherein S.sub.2 is the thickness of the through-flow water which is conveyed along the back of said screen, W.sub.2 is the distance between the tops of the back surface of the screen and .theta. is an angle formed between a horizontal plane and the screen, and
(b) a means for cleaning the screen, said cleaning means having a brush, said brush adapted for reciprocation in rubbing contact with the back surface of the screen, and the range of reciprocating motion of said brush being more than the width of said screen.

1 more element

Dependencies are inferred from the claim text.