US 4,289,616 AGranted

Apparatus for removing suspended solids from an effluent

OwnerRichard D. Hallack, Tommie B. Carterinventors

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Abstract

The apparatus herein provides a separation of suspended solids from a liquid containing such suspended solids. The apparatus comprises a base which supports a pan having a bottom wall, a spaced-apart pair of sidewalls extending upwardly and outwardly from the bottom wall and a spaced-apart pair of end walls extending upwardly and outwardly between the sidewalls and from the bottom wall to form an open top container. A perforated plate is secured within the pan to the sidewalls and end walls of the pan above the bottom wall to define a chamber between the bottom wall, an undersurface of the perforated plate, and the surrounding side and end walls. At least one outlet on the bottom wall of the pan is provided for introducing a vacuum to the chamber and for removing liquid from the chamber. A continuous liquid-absorbing medium transfer support extends around the pan and lies within the pan in contact with the perforated plate. The transfer support extends around the end walls of the pan to form a continuous loop around the pan. The transfer support wraps around a roller drive mechanism for providing ease of movement of the transfer support around the pan. A drive mechanism drives the rollers for moving the transfer support about the circular path around the pan. A liquid-absorbing medium comprising an industrial paper toweling having a basis weight from about 28 to about 34 pounds per ream, a caliper from about 0.013 to about 0.0145, an aged wet tensile strength from about 16 to about 25 ounces, and an aged absorption of less than 40 seconds, is positioned on the transfer support on the pan.

Apparatus for separating suspended solids from a liquid containing such suspended solids, the apparatus comprising:

(a) a base;
(b) a pan supported on the base having a bottom wall, a spaced-apart pair of sidewalls extending upwardly and outwardly from the bottom wall, and a spaced-apart pair of end walls extending upwardly and outwardly between the sidewalls and from the bottom wall to form an open-top container;
(c) a perforated plate within the pan and secured to the sidewalls and end walls of the pan above the bottom wall to define a chamber between the bottom wall, an undersurface of the perforated plate, and the surrounding side and end walls;
(d) at least one outlet on the bottom wall of the pan for introducing a vacuum to the chamber and for removing liquid from the pan;
(e) a continuous liquid-absorbing medium transfer support lying within the pan in contact with the perforated plate and extending across the end walls and forming a loop around the pan;
(f) roller means for providing ease of movement of the transfer support around the pan;
(g) drive means for moving the transfer support around the pan;
(h) a liquid-absorbing medium comprising an industrial paper toweling having a basis weight from about 28 to about 34 pounds per ream, a caliper from about 0.013 to about 0.0145, an aged-wet tensile strength from about 16 to 25 ounces and an aged absorption of less than 40 seconds, positioned on the transfer support on the pan;
(i) means for introducing liquid containing suspended solids to the pan onto the liquid-absorbing medium;
(k) means for sensing the level of liquid containing suspended solids in the pan and for activating the means for introducing liquid containing suspended solids to the pan when the level is below a selected level;
(l) a liquid receiver spaced from the pan and connected to an outlet of the pan by a conduit for removing liquid from the pan to the liquid receiver;
(m) a vacuum pump connected by a vacuum line to the liquid receiver for creating a reduced pressure in the liquid receiver and in the chamber in the pan;
and
(n) a liquid transfer pump connected to the liquid receiver for removing liquid from the liquid receiver.

11 more elements

Facts

Application

06/150,913Filed 19 May 1980 · continuation in part

Priority

25 Jun 1977

Granted

15 Sep 1981

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C02F 9/00
Multistage treatment of water, waste water or sewage
B01D 17/0202
Separation of non-miscible liquids: by ab- or adsorption
B01D 17/0214
By sedimentation: with removal of one of the phases
B01D 29/09
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00;…:…

Family

Serial777,687Parent of this continuation-in-part · filed 25 Jun 1977

Serial924,373Parent of this continuation-in-part · filed 13 Jul 1978

US 4,203,836 AParent of this continuation-in-part · filed 20 May 1980

US 4,289,616 AThis patent

From the US filing history. Foreign family members aren’t listed.

Abstract

Claims10