WO2009022039A1 - Procedimiento de eliminación de boro en tratamiento de aguas - Google Patents
Procedimiento de eliminación de boro en tratamiento de aguas Download PDFInfo
- Publication number
- WO2009022039A1 WO2009022039A1 PCT/ES2008/000479 ES2008000479W WO2009022039A1 WO 2009022039 A1 WO2009022039 A1 WO 2009022039A1 ES 2008000479 W ES2008000479 W ES 2008000479W WO 2009022039 A1 WO2009022039 A1 WO 2009022039A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- boron
- water treatment
- clays
- treatment according
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 15
- 238000003379 elimination reaction Methods 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- 230000008030 elimination Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 235000009508 confectionery Nutrition 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000004927 clay Substances 0.000 description 6
- -1 fluoride ions Chemical class 0.000 description 5
- 239000003456 ion exchange resin Substances 0.000 description 4
- 229920003303 ion-exchange polymer Polymers 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 3
- 229940063013 borate ion Drugs 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 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 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 235000021112 essential micronutrients Nutrition 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- URSLCTBXQMKCFE-UHFFFAOYSA-N dihydrogenborate Chemical compound OB(O)[O-] URSLCTBXQMKCFE-UHFFFAOYSA-N 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000008375 physiological alteration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 210000001550 testis Anatomy 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28011—Other properties, e.g. density, crush strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/58—Use in a single column
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/108—Boron compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Definitions
- the present invention falls within the field of water treatment and purification, specifically refers to a process for reducing the concentration of boron in water by using clays.
- Boron is an element widely distributed in the atmosphere, in the lithosphere and in the hydrosphere. Atmospheric boron is mostly in the form of gas and reaches the atmosphere by evaporation of seawater. In the lithosphere, it is found mainly in sedimentary rocks, mainly due to its high affinity for clay minerals. In the hydrosphere, Boron is in the form of boric acid H 3 BO 3 and borate ion H 2 BO 3 " ; the concentration of each of these forms varies depending on the pH, both compounds being in equilibrium at a pH of 8.7 and 8.8.
- Boron is one of the essential micronutrients that living organisms need to develop.
- boron is an essential trace element for life and its intake in high concentrations causes alterations in the testicles.
- exposure to moderate concentrations of Boron causes irritation of the mucous membranes and a decrease in the number of sperm.
- Boron is an essential trace element for growth, and is involved in fundamental metabolic processes such as the metabolism of phenols and the synthesis of lignin. Boron deficiency inhibits the development of the plant and an excess of this element is toxic to it. The interval between deficiency and toxicity levels is only 1 or 2 ppm, and any oscillation could cause important physiological alterations in the plant.
- WO9959187 describes a process to eliminate boron and fluoride ions from water, by contacting the water of the power supply, in the presence of magnesium with alkaline hydroxide to produce treated water and a precipitate of magnesium containing boron and fluorine. .
- US3856670 describes a process for the elimination of water boron, contacting the aqueous solution containing the borate ions with a phenolic anion exchange resin insoluble in aqueous medium, in the presence of at least one cationic species selected from the group of alkaline, alkaline earth, nitrogenous organic bases and ammonium cations.
- Patent application ES2246705 describes a process for removing borate anion from aqueous media using sugars anchored to an inorganic resin.
- the ion exchange resin that is used is selective for Boron
- the limiting factor of the process is the pH of the water, since at pH values lower than 8, the boron in the aqueous phase is in the form of boric acid and there is no exchange of this element with the corresponding resin, Thus, the yield decreases from 95% to 65%.
- the use of ion exchange resins to eliminate Boron from water is ineffective, since they are too expensive, or are not applicable at low concentrations, or are not sufficiently specific in the presence of other ionic species that interfere and / or organic pollutants
- the present invention describes a process for the elimination of water Boron by using clays, since due to its high specific surface area, its high porosity and its electrical charge, the claye particles are capable of absorbing water and other polar compounds as well as fixing and exchange cations with the medium. This procedure is simpler, faster and cheaper than those described in the current state of the art.
- the present invention relates to a procedure for the elimination of Boron in water treatment, which comprises the following steps:
- a stream of water to be treated is passed through an inlet manifold.
- This water can reach the treatment in different ways: by gravity or by pumping.
- the water to be treated can be sweet or salty, as long as they are contaminated with Boron.
- Water can be found at different pH levels depending on its origin. Regardless of the pH level at the origin of the waters to be treated with Boron content, the water to be treated will be subjected to a conditioning and / or correction of pH by additives of a basic or alkaline nature only when the inlet water has a pH lower than 5.5.
- the pH in the natural state is approximately 8.2, that is, the Boron is in the form of boric acid. and has a concentration of Boron between 4 and 5 mg / l.
- a pH of 9.5 Boron begins to transform into a borate ion and only from a pH of 12, 100% of the water boron is in the form of a borate ion.
- the water to be treated has been conditioned the water is contacted with the expanded clays present in the filter.
- Said filter can be and without limitation of a concrete, metallic or plastic material tank type, whether open, closed or pressure.
- the water is brought into contact with the clays, either in the upward direction, that is, from the bottom to the top or in the opposite direction in the downward direction, that is, from the top down.
- the expanded clays are of a size from 0.2 to 10 mm, the choice of size is a function of the Boron load in the water to be treated., Of density greater than 1.0 kg / liter because lower densities make that the clay floats and with a porosity level greater than 40%.
- the filtration rates are within the range between 5 and 15 m 3 / hm 2 of filter surface.
- the height The support of expanded clays housed inside the filter is between 0.5 to 3 meters.
- the clays used for the removal of Boron from water are any of those described and known in the prior art.
- the Boron retention process in clays happens in two stages; In a first exothermic stage, the Boron is adsorbed on the external particles of the clay by a mechanism of interchange of ligand with hydroxyl groups, with its consequent migration and incorporation within the tetrahedral places displacing the aluminum and the silicon of the structure through of a second slower endothermic fixation reaction.
- the water, once it has crossed the clays support, is evacuated by gravity or by pumping.
- the water already cleaned of boron is extracted, thanks to the action of the clays used in the procedure.
- a elimination of the Boron present in the water is achieved between 40 and 95%.
- a cycle of washing of the expanded clays should be carried out, which will be carried out every 24 or 72 hours and / or alternatively by pressure differential.
- the washing will be carried out with the treated water itself, by means of a pumping system that will drive the water towards the filter in an upward direction, that is, from the bottom up, to achieve a sufficient expansion of the clays that allow the drag of the accumulated excess Boron outside the system.
- the renewal of clays is not necessary until 20 to 25 years have arrived.
- the process will be carried out in water purification and regeneration plants.
- the efficiency of the process described in the present invention is from 40 to 80% of Boron elimination.
- the seawater is pumped into a contact chamber. Then the water is passed downwards, that is from the top down and / or alternatively upwards, that is, from the bottom up, directly bringing the water into contact. to deal with expanded clays that are housed in a filter.
- the filtering cycle is carried out at speeds between 4 and 16 m 3 / hm 2 and the height of the clay support is between 0.5 and 3 meters.
- the expanded clay used is of high porosity, with a large specific surface, of a size between 0.2 and 10 mm and of a density greater than 1.0 kg / liter.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0815389-2A2A BRPI0815389A2 (pt) | 2007-08-14 | 2008-07-07 | Procedimento para remoção de boro no tratamento de água |
US12/673,065 US20110259829A1 (en) | 2007-08-14 | 2008-07-07 | Method for removing boron in water treatment |
CN2008801062667A CN103298748A (zh) | 2007-08-14 | 2008-07-07 | 在水处理中去除硼的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP200702281 | 2007-08-14 | ||
ES200702281A ES2332756A1 (es) | 2007-08-14 | 2007-08-14 | Procedimiento de eliminacion de boro en tratamiento de aguas. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009022039A1 true WO2009022039A1 (es) | 2009-02-19 |
Family
ID=40350419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2008/000479 WO2009022039A1 (es) | 2007-08-14 | 2008-07-07 | Procedimiento de eliminación de boro en tratamiento de aguas |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110259829A1 (es) |
CN (1) | CN103298748A (es) |
BR (1) | BRPI0815389A2 (es) |
ES (1) | ES2332756A1 (es) |
WO (1) | WO2009022039A1 (es) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2477815B1 (es) * | 2013-01-17 | 2015-04-27 | Jorge DÍAZ CRESPO CARDONA | Salmuera y procedimiento para su fabricación |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745792A (en) * | 1951-12-06 | 1956-05-15 | Shiah Chyn Duog | Hydrocarbon treating process |
US3856670A (en) | 1970-09-23 | 1974-12-24 | Occidental Petroleum Corp | Removal of boron from water |
US4167481A (en) * | 1975-03-19 | 1979-09-11 | Leuven Research & Development Vzw | Process for the removal of metals from solution |
WO1989009192A1 (en) * | 1988-03-31 | 1989-10-05 | Commonwealth Scientific And Industrial Research Or | Hydrometallurgical effluent treatment |
US4872993A (en) * | 1988-02-24 | 1989-10-10 | Harrison George C | Waste treatment |
WO1999059187A1 (en) | 1998-05-14 | 1999-11-18 | Varian Inc | Ion trap mass spectrometer with electrospray ionization |
US20020179534A1 (en) * | 1996-10-07 | 2002-12-05 | A. S Norsk Leca | Light expanded clay aggregates for phosphorus removal |
ES2246705A1 (es) | 2004-05-28 | 2006-02-16 | Universidad Politecnica De Valencia | Metodo para la eliminacion de boro en medio acuoso. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240699A (en) * | 1961-11-02 | 1966-03-15 | Union Tank Car Co | Upflow regeneration method |
NL6714199A (es) * | 1967-10-19 | 1969-04-22 |
-
2007
- 2007-08-14 ES ES200702281A patent/ES2332756A1/es active Pending
-
2008
- 2008-07-07 WO PCT/ES2008/000479 patent/WO2009022039A1/es active Application Filing
- 2008-07-07 US US12/673,065 patent/US20110259829A1/en not_active Abandoned
- 2008-07-07 BR BRPI0815389-2A2A patent/BRPI0815389A2/pt not_active IP Right Cessation
- 2008-07-07 CN CN2008801062667A patent/CN103298748A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745792A (en) * | 1951-12-06 | 1956-05-15 | Shiah Chyn Duog | Hydrocarbon treating process |
US3856670A (en) | 1970-09-23 | 1974-12-24 | Occidental Petroleum Corp | Removal of boron from water |
US4167481A (en) * | 1975-03-19 | 1979-09-11 | Leuven Research & Development Vzw | Process for the removal of metals from solution |
US4872993A (en) * | 1988-02-24 | 1989-10-10 | Harrison George C | Waste treatment |
WO1989009192A1 (en) * | 1988-03-31 | 1989-10-05 | Commonwealth Scientific And Industrial Research Or | Hydrometallurgical effluent treatment |
US20020179534A1 (en) * | 1996-10-07 | 2002-12-05 | A. S Norsk Leca | Light expanded clay aggregates for phosphorus removal |
WO1999059187A1 (en) | 1998-05-14 | 1999-11-18 | Varian Inc | Ion trap mass spectrometer with electrospray ionization |
ES2246705A1 (es) | 2004-05-28 | 2006-02-16 | Universidad Politecnica De Valencia | Metodo para la eliminacion de boro en medio acuoso. |
Non-Patent Citations (1)
Title |
---|
NADAV, N.: "Boron removal from seawater reverse osmosis permeate utilizing selective ion exchange resin", DESALINIZATION, vol. 124, 1999, pages 131 - 135 |
Also Published As
Publication number | Publication date |
---|---|
CN103298748A (zh) | 2013-09-11 |
US20110259829A1 (en) | 2011-10-27 |
ES2332756A1 (es) | 2010-02-11 |
BRPI0815389A2 (pt) | 2015-02-10 |
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