GB1450673A - Method of purifying aqueous liquids by flocculation - Google Patents

Method of purifying aqueous liquids by flocculation

Info

Publication number
GB1450673A
GB1450673A GB1854675A GB1854675A GB1450673A GB 1450673 A GB1450673 A GB 1450673A GB 1854675 A GB1854675 A GB 1854675A GB 1854675 A GB1854675 A GB 1854675A GB 1450673 A GB1450673 A GB 1450673A
Authority
GB
United Kingdom
Prior art keywords
liquid
flocculation
purifying aqueous
aqueous liquids
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
GB1854675A
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.)
Vattenbyggnadsbyran AB
Original Assignee
Vattenbyggnadsbyran AB
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 Vattenbyggnadsbyran AB filed Critical Vattenbyggnadsbyran AB
Publication of GB1450673A publication Critical patent/GB1450673A/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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • 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
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • 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
    • B01D21/0018—Separation of suspended solid particles from liquids by sedimentation provided with a pump mounted in or on a settling tank
    • 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
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
    • B01D24/205—Downward filtration without specifications about the filter material supporting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/03—Processes of filtration using flocculating agents
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5209—Regulation methods for flocculation or precipitation
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air

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)
  • General Chemical & Material Sciences (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

1450673 Purifying aqueous liquid by flocculation VATTENBYGGNADSBYRAN AB 2 May 1975 [9 May 1974] 18546/75 Heading C1C The invention comprises a method of purifying aqueous liquids by chemical precipitation and filtering, wherein flocculation is initiated in a volume of liquid above a filter-bed in a filter in which the liquid flows downwardly, by blowing a gaseous medium into said volume of liquid, or by mechanically stirring it, the floc comprising impurities initially present in the liquid and a precipitating agent utilized to precipitate said impurities. Suitable precipitating agents are aluminium, iron or magnesium salts, lime, or a combination of these.
GB1854675A 1974-05-09 1975-05-02 Method of purifying aqueous liquids by flocculation Expired GB1450673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7406186A SE434045B (en) 1974-05-09 1974-05-09 SET TO CLEAN THE WATER THROUGH CHEMICAL FELLING IN A FILTER

Publications (1)

Publication Number Publication Date
GB1450673A true GB1450673A (en) 1976-09-22

Family

ID=20321077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1854675A Expired GB1450673A (en) 1974-05-09 1975-05-02 Method of purifying aqueous liquids by flocculation

Country Status (2)

Country Link
GB (1) GB1450673A (en)
SE (1) SE434045B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107098509A (en) * 2017-07-04 2017-08-29 宿州学院 A kind of multifunctional mobile purifier
WO2018199837A1 (en) * 2017-04-28 2018-11-01 Recondoil Sweden Ab Purification of oil
US11958004B2 (en) 2019-02-08 2024-04-16 Skf Recondoil Ab Method and system for purification of contaminated oil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018199837A1 (en) * 2017-04-28 2018-11-01 Recondoil Sweden Ab Purification of oil
CN110769910A (en) * 2017-04-28 2020-02-07 活力油瑞典公司 Purification of oil
US11458420B2 (en) 2017-04-28 2022-10-04 Recondoil Sweden Ab Purification of oil
US11752452B2 (en) 2017-04-28 2023-09-12 Recondoil Sweden Ab Purification of oil
CN107098509A (en) * 2017-07-04 2017-08-29 宿州学院 A kind of multifunctional mobile purifier
US11958004B2 (en) 2019-02-08 2024-04-16 Skf Recondoil Ab Method and system for purification of contaminated oil

Also Published As

Publication number Publication date
SE434045B (en) 1984-07-02
SE7406186L (en) 1975-11-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee