GB1340931A - Purifying water - Google Patents

Purifying water

Info

Publication number
GB1340931A
GB1340931A GB942371*[A GB1340931DA GB1340931A GB 1340931 A GB1340931 A GB 1340931A GB 1340931D A GB1340931D A GB 1340931DA GB 1340931 A GB1340931 A GB 1340931A
Authority
GB
United Kingdom
Prior art keywords
oil
water
mixture
solids
filter
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
GB942371*[A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1340931A publication Critical patent/GB1340931A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D12/00—Displacing liquid, e.g. from wet solids or from dispersions of liquids or from solids in liquids, by means of another liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/045—Breaking emulsions with coalescers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration

Abstract

1340931 Filtering and separating D K BEAVON 14 April 1971 9423/71 Heading B1D An oil-water mixture containing also oily particulate solids is treated by (i) passing through a granular filter medium to remove the particulate solids, the filtrate being water or a mixture of water and oil, (ii) periodically solvating oil from the granular filter media by passing an oil stripping media through the bed in the same direction as the oil-water mixture without affecting the integrity of the filter medium; and (iii) backwashing the filter to remove the now oil-free solids. The oil-water 'filtrate obtained in (i) may then be separated by gravity settling. The granular filter media is suitably sand of particle size 0.1 to 5 mm. diameter or a mixture of sand and coal giving rise to fine and coarse layers, other specified materials are finely divided carbon, glass beads and sintered metal. The oil may be solvated off the solids by steam or an organic solvent. The backwashing is carried out using water and may be accompanied by aeration to agitate the filter bed material.
GB942371*[A 1971-04-14 1971-04-14 Purifying water Expired GB1340931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB942371 1971-04-14

Publications (1)

Publication Number Publication Date
GB1340931A true GB1340931A (en) 1973-12-19

Family

ID=9871694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB942371*[A Expired GB1340931A (en) 1971-04-14 1971-04-14 Purifying water

Country Status (1)

Country Link
GB (1) GB1340931A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260489A (en) * 1979-07-19 1981-04-07 The British Petroleum Company Limited Treatment of oily sludge
US4447332A (en) * 1983-03-25 1984-05-08 Mobil Oil Corporation Fuel sludge treatment method, especially for leaded gasoline storage tank sludge
US5271851A (en) * 1993-03-08 1993-12-21 Kerr-Mcgee Corporation Integrated treatment system for refinery oily sludges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260489A (en) * 1979-07-19 1981-04-07 The British Petroleum Company Limited Treatment of oily sludge
US4447332A (en) * 1983-03-25 1984-05-08 Mobil Oil Corporation Fuel sludge treatment method, especially for leaded gasoline storage tank sludge
US5271851A (en) * 1993-03-08 1993-12-21 Kerr-Mcgee Corporation Integrated treatment system for refinery oily sludges

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees