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WO1999049949A1 - Method and filter for purifying water - Google Patents

Method and filter for purifying water Download PDF

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Publication number
WO1999049949A1
WO1999049949A1 PCT/FI1999/000261 FI9900261W WO9949949A1 WO 1999049949 A1 WO1999049949 A1 WO 1999049949A1 FI 9900261 W FI9900261 W FI 9900261W WO 9949949 A1 WO9949949 A1 WO 9949949A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
water
filter
oil
purifying
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.)
Ceased
Application number
PCT/FI1999/000261
Other languages
Finnish (fi)
French (fr)
Inventor
Seppo Takala
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.)
SANFIX FINLAND Oy AB
Original Assignee
SANFIX FINLAND Oy 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 SANFIX FINLAND Oy AB filed Critical SANFIX FINLAND Oy AB
Priority to AU31490/99A priority Critical patent/AU3149099A/en
Publication of WO1999049949A1 publication Critical patent/WO1999049949A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • 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
    • B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
    • 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

Definitions

  • the invention relates to a method for purifying water of oil and corresponding hydrocarbon compounds, the method comprising steps of con- veying water containing oil and the corresponding hydrocarbon compounds to a purifying filter which comprises an elastic filter part, achieving absorption of oil and the corresponding hydrocarbon compound in the elastic filter part, and repulsion of water from the elastic filter part, and conveying water from the purifying filter.
  • the invention further relates to a purifying filter for purifying water of oil and the corresponding hydrocarbon compound, the purifying filter comprising a frame part of the filter, the frame part comprising an opening for an inlet of water and an opening for an outlet of water, and an elastic filter part positioned in the frame part of the filter.
  • the method and purifying filter of the invention are particularly preferably suited for separating oil from oil-bearing water onboard boats.
  • the oil- bearing water can for instance be conveyed through the purifying filter by means of an electrically or manually operated pump.
  • oils and other hydrocarbon compounds from the fuel system and the motor itself that to date have been pumped as such into natural waters are released in the space at the bottom of the boat, i.e. the bilge, and in the water therein, i.e. the bilgewater.
  • This impure oil-bearing water when released in nature, pollutes the water system and feeds environmentally toxic algal blooms, for example.
  • to have the oil-bearing bilgewater lying in the bilge of a fibreglass boat for example, contributes to the rotting process of the fibreglass structure of the boat.
  • An object of the invention is to provide a method and a purifying filter for purifying water of oil and the corresponding hydrocarbon compounds.
  • the method for purifying water in accordance with the invention is characterized by the elastic filter part used in the method comprising an elastic texture within which hydrophobic, loose material of a granular form absorbing oil and the corresponding compounds is packed, and achieving in the method absorption of oil and the corresponding hydrocarbon compounds in the hydro- phobic material absorbing oil and the corresponding hydrocarbon compounds, and repulsion of water from the hydrophobic material absorbing oil and the corresponding hydrocarbon compounds.
  • the purifying filter in accordance with the invention is characterized by the elastic filter part comprising an elastic texture within which hydrophobic, loose material of a granular form absorbing oil and the corresponding compounds is packed.
  • the purifying filter of the invention can also be used for purifying other water than water of the above-mentioned type onboard a boat.
  • the filter part inside the purifying filter in accordance with the invention is preferably a separate, replaceable filter part.
  • the purifying filter of the invention can be arranged between the boat's bilge pump and the outlet tube thereof.
  • Figure 1 is a side view, partially in section, of a purifying filter in ac- cordance with the invention
  • Figure 2 shows a second frame piece seen from above
  • Figure 3 is a side view of a filter part comprised by the purifying filter of the invention.
  • the purifying filter shown in Figure 1 comprises a cylinder-shaped frame part 1 of the filter, the frame part comprising two uniform frame parts 1 ' and 1 ".
  • An opening is provided in the frame part 1 ' for an inlet 2 of water, and an opening is provided in the frame part 1 " for an outlet 3 of water.
  • a combination part 4' and 4" of these two frame parts 1 ' and 1 " there is a groove (not shown) for a seal 5.
  • the frame parts 1' and 1 " which are similar in shape, are combined with each other by acid-resistant metallic parts (not shown) to yield waterproofness.
  • the frame part 1 of the filter is preferably made of hydrocarbon- resistant, transparent PVC material, and in Figure 1 the frame part of the filter is cylinder-shaped.
  • a filter part 6 is arranged inside the frame part 1 of the filter.
  • the filter part comprises hydrophobic, loose granular material 7 absorbing oil and the corresponding hydrocarbon compounds, preferably packed inside a polyester texture 8.
  • the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds preferably contains 20-30% by weight of carbon, 20- 30% by weight of nitrogen, 35-50% by weight of water, 0.5-1.0% by weight of water-soluble salts and 0.02-0.05% by weight of formalin.
  • the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds contains 27.0% by weight of carbon, 24.8% by weight of nitrogen, 43.7% by weight of water, 0.66% by weight of water-soluble salts and 0.04% by weight of formalin.
  • Such hydrophobic material 7 absorbing oil and the corresponding hydrocarbon is manufactured by Sanol Ltd. and known as Sanol.
  • the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds can preferably be plant-based, machined, hydrophobic grain which absorbs hydrocarbon compounds and contains 40-60% by weight of carbon, 5-10% by weight of hydrogen, 1.0-5.0% by weight of nitrogen, 2.0-10% by weight of silicon and 15-25% by weight of wa- ter.
  • the filter part 6 is flexible in shape, tightly and evenly attaching itself to the cylinder-shaped inner wall of the frame part 1.
  • FIG. 1 shows a filter comprising a round, sheet-like sifter 9 which is 3 to 10 mm thick, metallic or otherwise hydrocarbon- and salt water- resistant, positioned inside the frame part 1 of the filter on the outlet end of water between the filter part 6 and the water outlet opening 3.
  • the purifying filter in accordance with the invention comprises com- bination parts 10 for combining the water inlet opening 2 and the water outlet opening 3, correspondingly, with a tube or a corresponding connector (not shown).
  • the mass of the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds of the filter part 6 is proportional to the oil-absorbing reaction time of the material 7 and to the incoming water flow rate in a particular volume of the structure shown herein. 4
  • the volume of the purifying filter of the invention and the absorbing capacity of the filter part 6 are dimensioned such that the filter part 6 is changed once in a boating season, for instance.
  • the invention further relates to a method for purifying water of oil and a corresponding hydrocarbon compound, the method comprising steps of conveying water containing oil and a corresponding hydrocarbon compound to a purifying filter with an elastic filter part 6, achieving absorption of oil and the corresponding hydrocarbon compound in the elastic filter part 6, and repulsion of water from the elastic filter part 6, and conveying water from the purifying filter.
  • the elastic filter part 6 used comprises an elastic texture 8 within which hydrophobic, loose material 7 of a granular form absorbing oil and the corresponding compounds is packed.
  • the method also allows such hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds to be preferably used which is plant-based, machined, hydrophobic grain which absorbs hydrocarbon compounds and contains 40-60% by weight of carbon, 5-10% by weight of hydrogen, 1.0-5.0% by weight of nitrogen, 2.0-10% by weight of silicon and 15-25% by weight of water. It is obvious to one skilled in the art that with progress in technology, the basic idea of the invention can be implemented in various ways. The invention and the embodiments thereof are thus not restricted to the examples described above but can vary within the scope of the claims.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal 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)
  • Water Treatment By Sorption (AREA)

Abstract

The invention relates to a method and a purifying filter for purifying water of oil and a corresponding hydrocarbon compound. The purifying filter comprises a frame part (1) of the filter with an opening for an inlet (2) of water and an opening for an outlet (3) of water, and an elastic filter part (6) positioned in the frame part (1) of the filter. The elastic filter part (6) comprises an elastic texture (8) within which hydrophobic, loose material (7) of a granular form absorbing oil and the corresponding compounds is packed.

Description

1
METHOD AND FILTER FOR PURIFYING WATER
BACKGROUND OF THE INVENTION
The invention relates to a method for purifying water of oil and corresponding hydrocarbon compounds, the method comprising steps of con- veying water containing oil and the corresponding hydrocarbon compounds to a purifying filter which comprises an elastic filter part, achieving absorption of oil and the corresponding hydrocarbon compound in the elastic filter part, and repulsion of water from the elastic filter part, and conveying water from the purifying filter. The invention further relates to a purifying filter for purifying water of oil and the corresponding hydrocarbon compound, the purifying filter comprising a frame part of the filter, the frame part comprising an opening for an inlet of water and an opening for an outlet of water, and an elastic filter part positioned in the frame part of the filter. The method and purifying filter of the invention are particularly preferably suited for separating oil from oil-bearing water onboard boats. The oil- bearing water can for instance be conveyed through the purifying filter by means of an electrically or manually operated pump.
In motor-operated boats, for example, oils and other hydrocarbon compounds from the fuel system and the motor itself that to date have been pumped as such into natural waters are released in the space at the bottom of the boat, i.e. the bilge, and in the water therein, i.e. the bilgewater. This impure oil-bearing water, when released in nature, pollutes the water system and feeds environmentally toxic algal blooms, for example. In addition, to have the oil-bearing bilgewater lying in the bilge of a fibreglass boat, for example, contributes to the rotting process of the fibreglass structure of the boat.
BRIEF DESCRIPTION OF THE INVENTION
An object of the invention is to provide a method and a purifying filter for purifying water of oil and the corresponding hydrocarbon compounds. The method for purifying water in accordance with the invention is characterized by the elastic filter part used in the method comprising an elastic texture within which hydrophobic, loose material of a granular form absorbing oil and the corresponding compounds is packed, and achieving in the method absorption of oil and the corresponding hydrocarbon compounds in the hydro- phobic material absorbing oil and the corresponding hydrocarbon compounds, and repulsion of water from the hydrophobic material absorbing oil and the corresponding hydrocarbon compounds.
The preferred embodiments of the method in accordance with the invention are disclosed in the dependent claims 2 to 4. The purifying filter in accordance with the invention is characterized by the elastic filter part comprising an elastic texture within which hydrophobic, loose material of a granular form absorbing oil and the corresponding compounds is packed.
The preferred embodiments of the purifying filter in accordance with the invention are disclosed in the dependent claims 6 to 12.
The purifying filter of the invention can also be used for purifying other water than water of the above-mentioned type onboard a boat. The filter part inside the purifying filter in accordance with the invention is preferably a separate, replaceable filter part. In boating, the purifying filter of the invention can be arranged between the boat's bilge pump and the outlet tube thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is now described in closer detail with reference to the accompanying drawings, in which
Figure 1 is a side view, partially in section, of a purifying filter in ac- cordance with the invention,
Figure 2 shows a second frame piece seen from above, and
Figure 3 is a side view of a filter part comprised by the purifying filter of the invention.
DETAILED DESCRIPTION OF THE INVENTION The purifying filter shown in Figure 1 comprises a cylinder-shaped frame part 1 of the filter, the frame part comprising two uniform frame parts 1 ' and 1 ". An opening is provided in the frame part 1 ' for an inlet 2 of water, and an opening is provided in the frame part 1 " for an outlet 3 of water.
In a combination part 4' and 4" of these two frame parts 1 ' and 1 " there is a groove (not shown) for a seal 5. The frame parts 1' and 1 ", which are similar in shape, are combined with each other by acid-resistant metallic parts (not shown) to yield waterproofness.
The frame part 1 of the filter is preferably made of hydrocarbon- resistant, transparent PVC material, and in Figure 1 the frame part of the filter is cylinder-shaped. 3
A filter part 6 is arranged inside the frame part 1 of the filter. The filter part comprises hydrophobic, loose granular material 7 absorbing oil and the corresponding hydrocarbon compounds, preferably packed inside a polyester texture 8. The hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds preferably contains 20-30% by weight of carbon, 20- 30% by weight of nitrogen, 35-50% by weight of water, 0.5-1.0% by weight of water-soluble salts and 0.02-0.05% by weight of formalin.
More preferably, the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds contains 27.0% by weight of carbon, 24.8% by weight of nitrogen, 43.7% by weight of water, 0.66% by weight of water-soluble salts and 0.04% by weight of formalin. Such hydrophobic material 7 absorbing oil and the corresponding hydrocarbon is manufactured by Sanol Ltd. and known as Sanol. Furthermore, the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds can preferably be plant-based, machined, hydrophobic grain which absorbs hydrocarbon compounds and contains 40-60% by weight of carbon, 5-10% by weight of hydrogen, 1.0-5.0% by weight of nitrogen, 2.0-10% by weight of silicon and 15-25% by weight of wa- ter.
The filter part 6 is flexible in shape, tightly and evenly attaching itself to the cylinder-shaped inner wall of the frame part 1.
In the filter part 6, the pressure caused by incoming water makes the filter part 6 move elastically within the frame part 1 of the filter. Figure 1 shows a filter comprising a round, sheet-like sifter 9 which is 3 to 10 mm thick, metallic or otherwise hydrocarbon- and salt water- resistant, positioned inside the frame part 1 of the filter on the outlet end of water between the filter part 6 and the water outlet opening 3.
The purifying filter in accordance with the invention comprises com- bination parts 10 for combining the water inlet opening 2 and the water outlet opening 3, correspondingly, with a tube or a corresponding connector (not shown).
The mass of the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds of the filter part 6 is proportional to the oil-absorbing reaction time of the material 7 and to the incoming water flow rate in a particular volume of the structure shown herein. 4
The volume of the purifying filter of the invention and the absorbing capacity of the filter part 6 are dimensioned such that the filter part 6 is changed once in a boating season, for instance.
The invention further relates to a method for purifying water of oil and a corresponding hydrocarbon compound, the method comprising steps of conveying water containing oil and a corresponding hydrocarbon compound to a purifying filter with an elastic filter part 6, achieving absorption of oil and the corresponding hydrocarbon compound in the elastic filter part 6, and repulsion of water from the elastic filter part 6, and conveying water from the purifying filter.
In the method, the elastic filter part 6 used comprises an elastic texture 8 within which hydrophobic, loose material 7 of a granular form absorbing oil and the corresponding compounds is packed.
In the method, absorption of oil and the corresponding hydrocarbon compounds in the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds, and repulsion of water from the hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds are achieved.
The method also allows such hydrophobic material 7 absorbing oil and the corresponding hydrocarbon compounds to be preferably used which is plant-based, machined, hydrophobic grain which absorbs hydrocarbon compounds and contains 40-60% by weight of carbon, 5-10% by weight of hydrogen, 1.0-5.0% by weight of nitrogen, 2.0-10% by weight of silicon and 15-25% by weight of water. It is obvious to one skilled in the art that with progress in technology, the basic idea of the invention can be implemented in various ways. The invention and the embodiments thereof are thus not restricted to the examples described above but can vary within the scope of the claims.

Claims

1. A method for purifying water of oil and a corresponding hydrocarbon compound, the method comprising steps of conveying water containing oil and a corresponding hydrocarbon compound to a purifying filter which comprises an elastic filter part (6), achieving absorption of oil and the corresponding hydrocarbon compound in the elastic filter part (6), and repulsion of water from the elastic filter part (6), and conveying water from the purifying filter, characterized by the elastic filter part (6) used in the method comprising an elastic texture (8) within which hydrophobic, loose material (7) of a granular form absorbing oil and the corresponding compounds is packed, and achieving in the method absorption of oil and the corresponding hy- drocarbon compounds in the hydrophobic material (7) absorbing oil and the corresponding hydrocarbon compounds, and repulsion of water from the hydrophobic material (7) absorbing oil and the corresponding hydrocarbon compounds.
2. A method as claimed in claim ^characterized by the hy- drophobic material (7) absorbing oil and the corresponding hydrocarbon compounds used in the method containing 20-30% by weight of carbon, 20-30% by weight of nitrogen, 35-50% by weight of water, 0.5-1.0% by weight of water- soluble salts and 0.02-0.05% by weight of formalin.
3. A method as claimed in claim ^characterized by the hy- drophobic material (7) absorbing oil and the corresponding hydrocarbon compounds used in the method containing 27.0% by weight of carbon, 24.8% by weight of nitrogen, 43.7% by weight of water, 0.66% by weight of water- soluble salts and 0.04% by weight of formalin.
4. A method as claimed in claim ^characterized by the hy- drophobic material (7) absorbing oil and the corresponding hydrocarbon compounds used in the method being plant-based, machined, hydrophobic grain which absorbs hydrocarbon compounds and contains 40-60% by weight of carbon, 5-10% by weight of hydrogen, 1.0-5.0% by weight of nitrogen, 2.0- 10% by weight of silicon and 15-25% by weight of water.
PCT/FI1999/000261 1998-03-31 1999-03-30 Method and filter for purifying water Ceased WO1999049949A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31490/99A AU3149099A (en) 1998-03-31 1999-03-30 Method and filter for purifying water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980161U FI3669U1 (en) 1998-03-31 1998-03-31 Cleaning filter for oily liquids
FIU980161 1998-03-31

Publications (1)

Publication Number Publication Date
WO1999049949A1 true WO1999049949A1 (en) 1999-10-07

Family

ID=8550545

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000261 Ceased WO1999049949A1 (en) 1998-03-31 1999-03-30 Method and filter for purifying water

Country Status (3)

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AU (1) AU3149099A (en)
FI (1) FI3669U1 (en)
WO (1) WO1999049949A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101948149A (en) * 2010-09-03 2011-01-19 浙江弗莱德环境科技有限公司 Activated carbon filter
EP2175956A4 (en) * 2007-07-27 2012-01-18 Robert M Sanchez Waste water filtering system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186831A (en) * 1992-01-21 1993-02-16 Leucadia, Inc. Oil sorbent products and method of making same
WO1993015833A1 (en) * 1992-02-07 1993-08-19 Cogito Consulting As Oil-absorbent fiber pellets
DE19538014A1 (en) * 1995-10-12 1997-04-17 Microdyn Modulbau Gmbh & Co Kg Removal of organic liquids, e.g. oil or petrol, from water
JPH1094702A (en) * 1996-09-24 1998-04-14 Hokkaido Shinrin Kumiai Rengokai Method and apparatus for removing oil mixed in water-soluble cutting fluid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186831A (en) * 1992-01-21 1993-02-16 Leucadia, Inc. Oil sorbent products and method of making same
WO1993015833A1 (en) * 1992-02-07 1993-08-19 Cogito Consulting As Oil-absorbent fiber pellets
DE19538014A1 (en) * 1995-10-12 1997-04-17 Microdyn Modulbau Gmbh & Co Kg Removal of organic liquids, e.g. oil or petrol, from water
JPH1094702A (en) * 1996-09-24 1998-04-14 Hokkaido Shinrin Kumiai Rengokai Method and apparatus for removing oil mixed in water-soluble cutting fluid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2175956A4 (en) * 2007-07-27 2012-01-18 Robert M Sanchez Waste water filtering system
CN101948149A (en) * 2010-09-03 2011-01-19 浙江弗莱德环境科技有限公司 Activated carbon filter

Also Published As

Publication number Publication date
FIU980161U0 (en) 1998-03-31
FI3669U1 (en) 1998-10-13
AU3149099A (en) 1999-10-18

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