GB2185473A - Method and apparatus for removing oil and salt contaminants from condensed steam - Google Patents
Method and apparatus for removing oil and salt contaminants from condensed steam Download PDFInfo
- Publication number
- GB2185473A GB2185473A GB08601013A GB8601013A GB2185473A GB 2185473 A GB2185473 A GB 2185473A GB 08601013 A GB08601013 A GB 08601013A GB 8601013 A GB8601013 A GB 8601013A GB 2185473 A GB2185473 A GB 2185473A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condensed steam
- purification
- container
- steam
- electrodes
- 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.)
- Withdrawn
Links
- 150000003839 salts Chemical class 0.000 title abstract description 16
- 239000000356 contaminant Substances 0.000 title abstract description 11
- 238000000034 method Methods 0.000 title description 5
- 239000006260 foam Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 25
- 238000000746 purification Methods 0.000 description 16
- 238000005192 partition Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 159000000014 iron salts Chemical class 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004581 coalescence Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- KWUUWVQMAVOYKS-UHFFFAOYSA-N iron molybdenum Chemical compound [Fe].[Fe][Mo][Mo] KWUUWVQMAVOYKS-UHFFFAOYSA-N 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1431—Dissolved air flotation machines
-
- 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
- B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
-
- 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
- B01D17/06—Separation of liquids from each other by electricity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1437—Flotation machines using electroflotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4616—Power supply
- C02F2201/46175—Electrical pulses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Condensed steam containing oil emulsified therein and/or salts dispersed or dissolved therein is purified by supplying the condensed steam to an arrangement of two concentric anodes 6 and 8 with a cathode 7 therebetween, the electrodes being formed of porous corrosion resistant material and subjected to an impulse direct current. Electrolysis of water present causes gas bubble formation and formation of a foam which entrains contaminant material and is forced upwardly away from the region of the electrodes by incoming condensate to be purified. <IMAGE>
Description
SPECIFICATION
Method and apparatus for removing oil and salt contaminants from condensed steam
This invention relates to a method and apparatus for removing oil and salt contaminants from condensed steam such as that formed in the generation of electrical energy and in chemical industry.
Before condensed steam from industrial plants, such as in power stations which are oil fired and plant used in the chemical industry, can be discharged to the environment, it is generally necessary for the condensed steam to be purified to remove oil and contaminant ions from it. Various forms of apparatus have been proposed for carrying out purification.
One such apparatus comprises a filter, a coalescing device, a cooler, an adsorber and a deaerater connected in series. The condensed steam containing oil droplets passes through the coalescing device in which the oil drops coalesce to form drops of larger size and which can be more readily separated from water droplets. The partially purified steam condensate from which oil droplets have been removed is then passed through an adsorption layer in which residual amounts of oil are adsorbed. The coalescence device itself contains anthracite, an ion exchange resin or active carbon. Between the coalescence device and the adsorber is disposed a cooling device whose function is to increase the efficiency of the adsorbing materials. Such an apparatus is described for example in DE-A-3046278.
Disadvantages of apparatus of such type are its slow rate of operation and poor extent of purification achieved, its complicated construction, difficulty of operating it as a result of frequent need to stop and replace the coalescence and adsorbing agents and the need to decrease the temperature of the condensed steam.
An alternative form of apparatus for purifying condensed steam produced in plants in which magnetite has been processed consists of an electromagnet, an oil cooler enveloping the coil of the electromagnet and a gear oil pump connected to the oil cooler. The condensed steam passes through the magnetic field created by the electromagnet, and whose effect is to cause the particles of impurities to agglomerate and precipitate.
Disadvantages of this form of apparatus are its complicated construction, the low degree of purification amounting to less than 50% of the initial magnetite content of the condensed steam, the labour intensive nature of its operation and the need which arises periodically to remove the precipitates. Furthermore, it is necessary to cool the condensate both initially and after the purification to degas it.
A steam condensate purifying installation with a mixed action filter is known which purifies the condensate with respect to dispersed and dissolved salts. It consists of a series of bodies filled with ion-exchange resins, both cationites and anionites being employed (see
Dobrevski, "Water Technology", part I, Sofia, 1982 p. 339, 343 and 347).
Disadvantages of this installation are its complicated construction, the low degree of purification achieved, the need to cool the condensate, the labour intensive character of its operation and the impossibility of removing a fine fraction of dispersed compounds, and in particular colloidally dispersed material which, if present in the oil component of the condensed steam, leads to clogging of apparatus and stopping the apparatus from carrying out its intended function.
Finally, an apparatus for purifying a steam condensate which has been in contact with non-magnetic iron salts is known which comprises a metal body containing a solid substrate on which quartz sand and saw-dust are disposed in layers to act as a multi-layer filter.
The polluted steam condensate passes through the multi-layer filter after it has been cooled. After its purification, the condensed steam is degassed.
Disadvantages of this known apparatus are its low productivity, low degree of purification achieved, the need to cool the condensate and the need to degas the treated condensate after it passes through the filter.
According to one aspect of the invention, there is provided a method for the purification of condensed steam containing oil emulsified therein and/or salts dispersed or dissolved therein, which comprises supplying the condensed steam to a purification chamber, subjecting the condensed steam to an impulse direct current by means of a concentric array of two anodes with a cathode disposed therebetween, the electrodes being porous and corrosion resistant, and allowing the foam comprising contaminants thereby formed to rise through the container under the pressure of incoming condensed steam and be removed from an upper region thereof.
According to a second aspect of the invention, there is provided apparatus for use in the purification of condensed steam containing oil emulsified therein and/or salts dispersed or dissolved therein, which comprises a chamber divided into an upper part and a lower part by an inclined partition having openings therethrough in a lower region thereof, there being a discharge outlet located in an upper region of the container above the partition for discharging contaminants from the condensed steam in the form of a foam, an outlet for discharging purified steam condensate located in a lower region of the container and an inlet for contaminated condensed steam located at an upper region of the lower part of the container remote from the portion of the partition having the openings, the container housing within the lower part thereof a concentric array of corrosion resistant porous electrodes connectable to an impulse direct current and consisting of two anodes with a cathode disposed therebetween.
This invention provides means for purifying condensed steam containing emulsified oils and/or dispersed and dissolved salts. It is not necessary to cool the condensed steam and its purification takes place continuously without the addition of reagents, all of the aforementioned impurities being removed simultaneously. A relatively simple construction of apparatus is employed whose current usage is lower than in hitherto used forms of apparatus. Overall, the present invention offers significant possibility for process automation.
More particularly, it has been found that when working in accordance with the invention, purification of condensed steam which has not been cooled results in the emulsified oil content being reduced to below 0.1 mg/l, the content of dispersed and dissolved iron salts being reduced to below 3,ag/litre and the content of silicon salts calculated as SiO2 being reduced to below 4 Ag/litre. Current consumption may be of the order of 1 kwh/m3 and the temperature of the condensed steam being treated may be of the order of 95 to 100 C. After purification of the condensed steam, no supplementary degassing is required.
For a better understanding of the invention and to show how the same can be carried into effect, reference will now be made, by way of example only, to the accompanying drawing which shows schematically apparatus for purification of uncooled condensed steam containing oil dispersed therein and salts dissolved and dispersed therein.
The apparatus shown in the drawing comprises a chamber 1, in the lower part of which is a connecting tube 2 for removal of treated condensed steam and in the upper part of which is a tube 3 for removal of a gel foam comprising oil which has been dispersed in the condensed steam and salts which have been dissolved and dispersed therein. Extending across the chamber 1 between the tubes 2 2 and 3 is disposed an inclined partition 4 which is perforated in its lower region. Below the upper region of the partition 4 is disposed a connecting tube 5 passing laterally through the cylindrical wall of the chamber 1 and serving for supply of polluted condensed steam to the chamber. In the lower part of the chamber
1 are disposed concentrically water-resistant porous outer anode 6, cathode 7 and inner anode 8 which are connected to an impulse direct current source 9.
The apparatus for purifying condensed steam with respect to oils and salts operates in the following manner:
Polluted condensed steam containing oils and dispersed and dissolved salts, which condensate has not been cooled and has a temperature of over 95 C, is fed continuously to chamber 1 through connecting tube 5. At the same time, the current source 9 is switched on and, as a result, the electrodes 6, 7 and 8 are subjected to current impulses with a frequency of 50 Hz.
The electric field generated between the outer anode 6, cathode 7 and the inner anode 8 orientates and the dissociated water ions the solvated oil drops and the ions of dissolved salts which are present in such a manner that the negatively charged particles pass to the anode while the positively charged particles pass to the cathode. As a result, atomic hydrogen is liberated at the cathode 7 while atomic oxygen is liberated at the anodes 6 and 8. The dispersed iron salts forming the basic pollutant in the condensed steam are partially dissolved under the action of the electric field which is created. The salts are converted rapidly in turn into ferric hydroxide and then a complex ion [ Fe(OH ] -.
The solvated oil drops have a positive charge due to the solvated water dipoles.
Silicon salts present in the condensed steam come to exist in the form of colloidal micells of silicic acid which are negatively charged.
[ Fe(OH)4j- and these colloidal particles of silicic acid become associated with the solvated oil drops, aggregating to form a gel.
Contaminants in the non-treated condensate serve as nuclei or source locations for steam generation and gas evolution. Microscopic gas bubbles consisting of hydrogen and oxygen, steam, dissolved air, CO2 etc. are evolved at the electrodes 6, 7 and 8. The surfaces of the bubbles are electrically charged and they behave as spherical condensers. The bubbles become oriented and concentrate the ions of the dissolved salts from the condensed steam.
When a small bubble meets a large bubble, it diffuses across the liquid membrane boundary in the large bubble due to its higher pressure. The contaminant situated on the surface of the small bubble is passed into the surface of the big bubble. This process is dynamic.
As a result of this bubble growth, the contaminants are carried over the surface of chamber 1 in the form of a foam. The foam thus formed and containing material of a gel like consistency passes under the action of the pressure of the incoming as yet untreated steam condensate up through the inclined partition 4 which is perforated at its lower end and is removed through the discharge tube 3.
The purified condensed steam leaves container
1 through the connecting tube 2 at a tempera- ture above 950C and with an oil content below 0.1 mg/l, a dispersed and dissolved iron salt content below 3 Ag/l and a silicon salt content below 4 ,ag/l.
The following Example illustrates the invention:
EXAMPLE
Utilising the apparatus shown in the accompanying drawing, a continuous purification of industrially produced condensed steam containing 59 mg/l of emulsified oil, 56 #g/l of iron salts and 18 ,ug/l expressed as SiO2 of dispersed salts of silicic acid was effected.
Purification was carried out without the use of additional reagents, under the action of a direct impulse current having a frequency of 50
Hz which was fed to outer anode 6, cathode 7 and inner anode 8 of the apparatus. The electrodes were all made of iron-molybdenum steel. The condensed steam leaving the apparatus through tube 2 contained oil in an amount of 0.08 mg/l, iron salts in an amount of 2 Ag/l (expressed as Fe3+) and silicon salts, calculated as SiO2 in an amount of 3 yg/l.
The contaminants of the original condensed steam in the form of a foam were conveyed by gas bubbles over the surface of chamber 1 to which the original steam condensate was supplied at the rate of 250 litres/hour creating a pressure on partition 4. The foam was pushed by means of the incoming condensed steam through the lower end of partition 4 and then through the discharge tube 3.
Claims (7)
1. A method for the purification of condensed steam containing oil emulsified therein and/or salts dispersed or dissolved therein, which comprises supplying the condensed steam to a purification chamber, subjecting the condensed steam to an impulse direct current by means of a concentric array of two anodes with a cathode disposed therebetween, the electrodes being porous and corrosion resistant, and allowing the foam comprising contaminants thereby formed to rise through the container under the pressure of incoming condensed steam and be removed from an upper region thereof.
2. A method as claimed in claim 1, wherein the temperature of the condensed steam is at least 950C while it is in the container.
3. A method as claimed in claim 1 or 2, wherein the impulse direct current has a frequency of 50 Hz.
4. A method for the purification of condensed steam, substantially as described in the foregoing Example.
5. Apparatus for use in the purification of condensed steam containing oil emulsified therein and/or salts dispersed or dissolved therein, which comprises a chamber divided into an upper part and a lower part by an inclined partition having openings therethrough in a lower region thereof, there being a discharge outlet located in an upper region of the container above the partition for discharging contaminants from the condensed steam in the form of a foam, an outlet for discharging purified steam condensate located in a lower region of the container and an inlet for contaminated condensed steam located at an upper region of the lower part of the container remote from the portion of the partition having the openings, the container housing within the lower part thereof a concentric array of corrosion resistant porous electrodes connectable to an impulse direct current and consisting of two anodes with a cathode disposed therebetween.
6. Apparatus as claimed in claim 5, wherein the electrodes are made of molybdenum steel.
7. Apparatus for the purification of condensed steam, substantially as hereinbefore described with reference to, and as shown in, the accompanying drawing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG8466341A BG39701A1 (en) | 1984-07-23 | 1984-07-23 | Apparatus for cleaning vapour condensate from oils and salts |
| DE19863600722 DE3600722A1 (en) | 1984-07-23 | 1986-01-13 | DEVICE FOR CLEANING A STEAM CONDENSATE OF OILS AND SALTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8601013D0 GB8601013D0 (en) | 1986-02-19 |
| GB2185473A true GB2185473A (en) | 1987-07-22 |
Family
ID=37875483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08601013A Withdrawn GB2185473A (en) | 1984-07-23 | 1986-01-16 | Method and apparatus for removing oil and salt contaminants from condensed steam |
Country Status (6)
| Country | Link |
|---|---|
| BG (1) | BG39701A1 (en) |
| DE (1) | DE3600722A1 (en) |
| FR (1) | FR2592815B1 (en) |
| GB (1) | GB2185473A (en) |
| HU (1) | HU199359B (en) |
| SE (1) | SE448988B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4033223A1 (en) * | 1990-10-19 | 1992-04-23 | Gabriel Volpe | Foamer-type water purifier for e.g aquarium water - which mixes water drawn from pump with air and fed to sepn. chamber having downwardly sloping partition |
| NL2011805C2 (en) * | 2013-11-14 | 2015-05-19 | Brilliant Water Invest Ii B V | Electrolysis unit for waste water treatment. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1136575A (en) * | 1955-01-13 | 1957-05-15 | Metallgesellschaft Ag | Method and device for the electrostatic removal of water, in particular water contained in mineral oils |
| AT270517B (en) * | 1965-10-26 | 1969-04-25 | Erhardt H Dipl Ing Dr Baer | Process and flotation cell for the purification of waste water |
| BE756128A (en) * | 1972-06-08 | 1971-03-15 | Vnii Khirurgicheskoi Apparatur | CONTAINER FOR RESERVE BLOOD AND FOR THE ADMISSION OF CORONAIR BLOOD |
| FR2441588A1 (en) * | 1978-11-17 | 1980-06-13 | Sofrance Sa | DEVICE FOR SEPARATING TWO LIQUID PHASES AND ITS APPLICATION TO THE SEPARATION OF HYDROCARBONS CONTAINED IN REJECTION WATER |
| JPS599203B2 (en) * | 1979-12-10 | 1984-03-01 | 丸智工研株式会社 | Oil/water separation method by coarse graining |
| CH647421A5 (en) * | 1980-06-04 | 1985-01-31 | Ciba Geigy Ag | METHOD FOR SEPARATING OIL-IN-WATER EMULSIONS THAT MAY TENSIDE BY ELECTROLYSIS. |
-
1984
- 1984-07-23 BG BG8466341A patent/BG39701A1/en unknown
-
1985
- 1985-09-24 SE SE8504401A patent/SE448988B/en not_active IP Right Cessation
-
1986
- 1986-01-13 DE DE19863600722 patent/DE3600722A1/en not_active Withdrawn
- 1986-01-15 FR FR8600501A patent/FR2592815B1/en not_active Expired
- 1986-01-16 GB GB08601013A patent/GB2185473A/en not_active Withdrawn
- 1986-02-11 HU HU86592A patent/HU199359B/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4033223A1 (en) * | 1990-10-19 | 1992-04-23 | Gabriel Volpe | Foamer-type water purifier for e.g aquarium water - which mixes water drawn from pump with air and fed to sepn. chamber having downwardly sloping partition |
| NL2011805C2 (en) * | 2013-11-14 | 2015-05-19 | Brilliant Water Invest Ii B V | Electrolysis unit for waste water treatment. |
| WO2015072855A3 (en) * | 2013-11-14 | 2015-07-09 | Brilliant Water Investments Ii B.V. | Electrolysis unit for waste water treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2592815B1 (en) | 1989-07-28 |
| BG39701A1 (en) | 1986-08-15 |
| DE3600722A1 (en) | 1987-07-16 |
| GB8601013D0 (en) | 1986-02-19 |
| HUT43802A (en) | 1987-12-28 |
| SE448988B (en) | 1987-03-30 |
| HU199359B (en) | 1990-02-28 |
| SE8504401D0 (en) | 1985-09-24 |
| FR2592815A1 (en) | 1987-07-17 |
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