NL7802187A - Oil removal from oily sludge - by filtration on precoated surface filter - Google Patents

Oil removal from oily sludge - by filtration on precoated surface filter

Info

Publication number
NL7802187A
NL7802187A NL7802187A NL7802187A NL7802187A NL 7802187 A NL7802187 A NL 7802187A NL 7802187 A NL7802187 A NL 7802187A NL 7802187 A NL7802187 A NL 7802187A NL 7802187 A NL7802187 A NL 7802187A
Authority
NL
Netherlands
Prior art keywords
filtration
filter
sludge
surface filter
oily sludge
Prior art date
Application number
NL7802187A
Other languages
Dutch (nl)
Original Assignee
British Petroleum Co
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 British Petroleum Co filed Critical British Petroleum Co
Priority to NL7802187A priority Critical patent/NL7802187A/en
Publication of NL7802187A publication Critical patent/NL7802187A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/002—Sludge treatment using liquids immiscible with water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0288—Applications, solvents
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

Treatment of oily sludge (e.g. from settlers, sand filters or flotation units used to remove oil from refinery effluents etc.) comprises (a) filtering the sludge on a precoated surface filter, and (b) extracting the filter cake with a hydrocarbon solvent and/or stripping it with steam. The precoat material is pref. diatomaceous earth. The surface filter can be a plate-, tube- or candle-type filter. The sludge can be diluted with water and/or mixed with a filter aid (esp. diatomaceous earth) before filtration. Filtration is pref. effected under pressure at a rate of 0.05-10 (esp. 0.5-2.5) m3/m2/hr.
NL7802187A 1978-02-28 1978-02-28 Oil removal from oily sludge - by filtration on precoated surface filter NL7802187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7802187A NL7802187A (en) 1978-02-28 1978-02-28 Oil removal from oily sludge - by filtration on precoated surface filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7802187A NL7802187A (en) 1978-02-28 1978-02-28 Oil removal from oily sludge - by filtration on precoated surface filter

Publications (1)

Publication Number Publication Date
NL7802187A true NL7802187A (en) 1979-08-30

Family

ID=19830411

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7802187A NL7802187A (en) 1978-02-28 1978-02-28 Oil removal from oily sludge - by filtration on precoated surface filter

Country Status (1)

Country Link
NL (1) NL7802187A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed