GB491623A - An improved method of, and apparatus for, separating solids and liquids in sewage and polluted water - Google Patents

An improved method of, and apparatus for, separating solids and liquids in sewage and polluted water

Info

Publication number
GB491623A
GB491623A GB22120/37A GB2212037A GB491623A GB 491623 A GB491623 A GB 491623A GB 22120/37 A GB22120/37 A GB 22120/37A GB 2212037 A GB2212037 A GB 2212037A GB 491623 A GB491623 A GB 491623A
Authority
GB
United Kingdom
Prior art keywords
liquid
air
sewage
pressure
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22120/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROBERT CUNNINGHAM MCILLERON
Original Assignee
ROBERT CUNNINGHAM MCILLERON
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROBERT CUNNINGHAM MCILLERON filed Critical ROBERT CUNNINGHAM MCILLERON
Publication of GB491623A publication Critical patent/GB491623A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0084—Enhancing liquid-particle separation using the flotation principle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)

Abstract

491,623. Aerating sewage etc.; gravityseparation apparatus. McILLERON, R. C. Aug. 11, 1937, No. 22120. Convention date, May 14. [Class 111] Solids and liquids in sewage and polluted water are separated by first aerating the sewage liquid or water to effect saturation or partial saturation with air at a predetermined pressure, and then effecting a drop in the pressure such that air is evolved to produce movement of the solids upwardly relatively to the liquid, the separated solids and liquid then being drawn off from one another. The sewage is fed from a preliminary settlement tank 5 into a launder 4 communicating by a pipe 2 cock 12 and Venturi tube 8 with a pressure or aerating vessel 1, this vessel being situated at a sufficient depth to give the desired pressure to the sewage liquid. The Venturi tube is provided with air inlets 9 through which air is drawn into the liquid the supply of air being controlled by a cock 11. The chamber 1 is provided with a motor driven impeller 14 by which the liquid is drawn up a tube 18 and flung at high velocity against the sides of the vessel, thus becoming saturated with air. The air-saturated liquid passes upwardly through the outflow pipe 3, which is of less cross-section than the pipe 2, at such a velocity that the solids are carried therewith up the pipe to a settling tank 7. As the liquid rises in the pipe some of the air dissolved therein is freed due to the reduction in pressure and ascends to the surface in the form of small bubbles carrying with it the floatable solid particles. These accumulate in a sludge compartment 25 of the tank 7 and are run off at intervals through a pipe 26, the clarified effluent and heavy solids being drawn off from a chamber 22 and 28 respectively. In a modification the pressure chamber, instead of being provided with an impeller, is provided with a series of plates over which the liquid flows to expose a large surface to the air and in another a circulating pump is provided by which the liquid is caused to flow over frusto-conical baffles for the same purpose. Instead of being produced statically the pressure on the liquid in the chamber may be obtained by the use of air compressors &c.
GB22120/37A 1937-05-14 1937-08-11 An improved method of, and apparatus for, separating solids and liquids in sewage and polluted water Expired GB491623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US491623XA 1937-05-14 1937-05-14

Publications (1)

Publication Number Publication Date
GB491623A true GB491623A (en) 1938-09-06

Family

ID=21958346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22120/37A Expired GB491623A (en) 1937-05-14 1937-08-11 An improved method of, and apparatus for, separating solids and liquids in sewage and polluted water

Country Status (1)

Country Link
GB (1) GB491623A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746605A (en) * 1952-03-13 1956-05-22 Robert A Baum Treatment of liquids by means of dissolved gases
DE1137997B (en) * 1952-12-17 1962-10-11 John Oskar Georg Albrektsson Process for the purification of wastewater contaminated by suspended matter by buoyancy
US3087710A (en) * 1949-02-10 1963-04-30 Melotte Ecremeuses Apparatus for clarifying liquids containing suspended solids
US3121680A (en) * 1958-10-27 1964-02-18 Yoemans Brothers Company Method and apparatus for treating fluid material with suspended solids
US3175687A (en) * 1962-09-24 1965-03-30 Komline Sanderson Eng Corp Flotation unit
CN112138851A (en) * 2020-09-18 2020-12-29 淄博高新区成大机械设计研究所 Sedimentation type cutting fluid collecting device for numerical control machining center and using method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087710A (en) * 1949-02-10 1963-04-30 Melotte Ecremeuses Apparatus for clarifying liquids containing suspended solids
US2746605A (en) * 1952-03-13 1956-05-22 Robert A Baum Treatment of liquids by means of dissolved gases
DE1137997B (en) * 1952-12-17 1962-10-11 John Oskar Georg Albrektsson Process for the purification of wastewater contaminated by suspended matter by buoyancy
US3121680A (en) * 1958-10-27 1964-02-18 Yoemans Brothers Company Method and apparatus for treating fluid material with suspended solids
US3175687A (en) * 1962-09-24 1965-03-30 Komline Sanderson Eng Corp Flotation unit
CN112138851A (en) * 2020-09-18 2020-12-29 淄博高新区成大机械设计研究所 Sedimentation type cutting fluid collecting device for numerical control machining center and using method thereof

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