CN112239247B - Fabric material based on silver-containing zeolite and application of fabric material in seawater desalination - Google Patents
Fabric material based on silver-containing zeolite and application of fabric material in seawater desalination Download PDFInfo
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- CN112239247B CN112239247B CN202011053653.8A CN202011053653A CN112239247B CN 112239247 B CN112239247 B CN 112239247B CN 202011053653 A CN202011053653 A CN 202011053653A CN 112239247 B CN112239247 B CN 112239247B
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- Prior art keywords
- silver
- containing zeolite
- zeolite
- ions
- fabric
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 239000010457 zeolite Substances 0.000 title claims abstract description 190
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 187
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 158
- 239000004332 silver Substances 0.000 title claims abstract description 158
- 239000004744 fabric Substances 0.000 title claims abstract description 127
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 239000013535 sea water Substances 0.000 title claims abstract description 116
- 239000000463 material Substances 0.000 title claims abstract description 83
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 27
- 239000000835 fiber Substances 0.000 claims abstract description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims description 52
- -1 silver ions Chemical class 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 229910052788 barium Inorganic materials 0.000 claims description 34
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 34
- 229910001422 barium ion Inorganic materials 0.000 claims description 33
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 18
- 238000011033 desalting Methods 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 9
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 9
- 239000004753 textile Substances 0.000 claims description 7
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims 1
- 239000013505 freshwater Substances 0.000 abstract description 29
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 235000020188 drinking water Nutrition 0.000 abstract description 7
- 239000003651 drinking water Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000706 filtrate Substances 0.000 description 37
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 26
- 238000000034 method Methods 0.000 description 19
- 150000003839 salts Chemical class 0.000 description 18
- 230000000694 effects Effects 0.000 description 17
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 16
- 229910001415 sodium ion Inorganic materials 0.000 description 16
- 238000005342 ion exchange Methods 0.000 description 15
- 239000002244 precipitate Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 239000011780 sodium chloride Substances 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 12
- 239000007787 solid Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 9
- 229910001425 magnesium ion Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- 229910021607 Silver chloride Inorganic materials 0.000 description 7
- 150000001768 cations Chemical class 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 5
- 159000000009 barium salts Chemical class 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 5
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000008399 tap water Substances 0.000 description 5
- 235000020679 tap water Nutrition 0.000 description 5
- 229910001424 calcium ion Inorganic materials 0.000 description 4
- 230000035622 drinking Effects 0.000 description 4
- 229910001414 potassium ion Inorganic materials 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000009429 distress Effects 0.000 description 3
- 150000002500 ions Chemical group 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003204 osmotic effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- ZXSQEZNORDWBGZ-UHFFFAOYSA-N 1,3-dihydropyrrolo[2,3-b]pyridin-2-one Chemical compound C1=CN=C2NC(=O)CC2=C1 ZXSQEZNORDWBGZ-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 208000005374 Poisoning Diseases 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- JYIMWRSJCRRYNK-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4] JYIMWRSJCRRYNK-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 239000013354 porous framework Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- LKZMBDSASOBTPN-UHFFFAOYSA-L silver carbonate Substances [Ag].[O-]C([O-])=O LKZMBDSASOBTPN-UHFFFAOYSA-L 0.000 description 2
- 229910001958 silver carbonate Inorganic materials 0.000 description 2
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 description 2
- 229910000367 silver sulfate Inorganic materials 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 235000019640 taste Nutrition 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 235000019658 bitter taste Nutrition 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- UNYSKUBLZGJSLV-UHFFFAOYSA-L calcium;1,3,5,2,4,6$l^{2}-trioxadisilaluminane 2,4-dioxide;dihydroxide;hexahydrate Chemical group O.O.O.O.O.O.[OH-].[OH-].[Ca+2].O=[Si]1O[Al]O[Si](=O)O1.O=[Si]1O[Al]O[Si](=O)O1 UNYSKUBLZGJSLV-UHFFFAOYSA-L 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 229910052676 chabazite Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 210000005260 human cell Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000019643 salty taste Nutrition 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 210000002700 urine Anatomy 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- 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
- C02F2101/12—Halogens or halogen-containing 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
Abstract
The invention relates to a fabric material based on silver-containing zeolite, which comprises silver-containing zeolite and a fiber fabric, wherein the silver-containing zeolite is attached to the fiber fabric, the weight ratio of the silver-containing zeolite in the total weight of the silver-containing zeolite and the fiber fabric is more than 15%, and the mole ratio of silicon atoms to aluminum atoms in the silver-containing zeolite is 1-1.5:1. the invention also relates to application of the fabric material based on the silver-containing zeolite in sea water desalination treatment. Seawater flowing through the filter column packed with the fabric can be converted into potable fresh water. The beneficial effects of the invention are as follows: the silver-containing zeolite and the fiber fabric form a porous structure, so that the seawater can be automatically and uniformly mixed while flowing through the porous structure, the shaking by manpower is not needed, and the physical strength and time of a user are saved; fresh water remained in the fabric material can be flushed down by seawater, and the fresh water is completely collected to be drinking water, so that the utilization rate is high; can be drunk while preparing fresh water without waiting for complete reaction.
Description
Technical Field
The invention belongs to the technical field of sea water desalination, and particularly relates to a fabric material based on silver-containing zeolite and application thereof in sea water desalination.
Background
Seawater contains a large amount of salts, and has salty and bitter taste. Because the salt concentration is too high, the osmotic pressure is far higher than that of human cells, and the thirst cannot be quenched by direct drinking. If the seawater is directly drunk, the surplus salt brought into the human body must be diluted by the water additionally supplied from the body fluid of the human body to be discharged in the form of urine or sweat, which can cause serious dehydration and even death of the human body. So the seawater is required to be desalted and then drunk by people to supplement water. When a human is at sea, it is often necessary to carry a sea water desalination device in a lifeboat or parachuting equipment to provide a fresh water supply in an emergency situation so that the person in distress can survive long enough to be rescued. In particular, portable sea water desalination devices are listed as a requisite life saving device for naval pilots.
The main cations in the seawater are sodium ions, calcium ions, magnesium ions and potassium ions, and some metal ions with low content, the anions are mainly chloride ions, the anions are sulfate ions, and some carbonate plasmas with low content. So long as the anions and cations with higher content can be removed, most of salts in the seawater can be removed, and the seawater becomes drinkable fresh water.
The existing portable seawater desalination devices are mainly divided into three types: (1) reverse osmosis apparatus: high pressure is provided by manual or electromechanical means to filter seawater from a reverse osmosis membrane which entraps salts on one side of the source water of the membrane and yields fresh water on the other side. Because of the high osmotic pressure of seawater, it is necessary to overcome the osmotic pressure, and the operating pressure is required to be greater than about 25 atmospheres. The high-pressure equipment is made of high-density metal, has large volume and weight and is troublesome to operate, but has the advantages of long-term use and large total water yield in the service period of the equipment. (2) a solar distillation apparatus: the device converts solar energy into heat energy through absorbing sunlight, heats seawater, and then collects fresh water obtained after condensation as drinking water. The method does not need high-voltage equipment, has lighter weight and can be used for a long time. But is limited by natural conditions, is only suitable for areas with sufficient sunlight, can work only under the condition of sufficient sunlight, and has slower water production rate. (3) seawater desalination agent: the method uses desalting agent to transform various anions and cations in seawater into solid precipitate form capable of being filtered and separated, and the solid precipitate is filtered and removed to obtain fresh water. The method has the advantages that high-pressure equipment is not needed, the method is independent of weather conditions, drinkable fresh water can be quickly prepared, but the method is high in cost, and is not suitable for daily sea water desalination operation, and the method is generally used as an emergency water production device for people in distress.
The sea water desalting agents reported so far are all in the form of powder or powder pressed into blocks. When in use, the water is strictly mixed with seawater according to a specified proportion, and the mixture is continuously mixed by shaking and vibrating for more than one hour, so that the reaction is promoted to be completely carried out. After the ion exchange and precipitation reaction is finished, a large amount of sodium-containing zeolite, silver chloride precipitate, and precipitates such as barium sulfate, magnesium hydroxide and the like are mixed in the desalted seawater. These precipitates are usually in the form of colloids, very small particles and settling difficulties. So that the pasty mixture obtained by the desalination reaction of sea water is a pasty mixture obtained by mixing a large amount of zeolite particles and colloidal precipitates with fresh water, and can not be directly drunk. In the actual use process, an additional filter bag is also required to be provided, and after the paste is filled, the fresh water is filtered out by manual extrusion. If the filter bag holes are too large, colloid cannot be totally trapped in the filter bag, and if the holes are too small, the filter is difficult. In addition, in the actual operation flow of the desalination process, the seawater and the seawater desalination agent are integrally mixed, and after the reaction is finished, the fresh water is extruded by manual extrusion. The zeolite particles have more gaps, and the residual moisture in the gaps is difficult to extract by extrusion, so that the yield of the desalted water is affected. In practical operation, about 15% -20% of the fresh water generated by the reaction cannot be squeezed out for use, and the seawater desalination agent with relatively high price is wasted. Meanwhile, the process is an integral desalination process, and fresh water is obtained again for drinking after all the reactions are finished. At least more than 1 hour from the beginning of preparation to drinking.
Disclosure of Invention
The invention aims to provide a fabric material based on silver-containing zeolite with high desalination efficiency and high speed and application thereof in sea water desalination.
In order to achieve the above object, the present invention adopts the following technical scheme:
the invention provides a fabric material based on silver-containing zeolite, which comprises silver-containing zeolite and a fiber fabric, wherein the silver-containing zeolite is attached to the fiber fabric, the weight ratio of the silver-containing zeolite to the total weight of the silver-containing zeolite and the fiber fabric is more than 15%, and the mole ratio of silicon atoms to aluminum atoms in the silver-containing zeolite is 1-1.5:1.
the silver-containing zeolite refers to zeolite which introduces a large amount of silver ions into zeolite microporous channels through ion exchange. The zeolite skeleton is a porous framework structure formed by silicon and aluminum through covalent bonds and having long-range order, the zeolite skeleton is negatively charged, and silver ions are positively charged and exist in pores of the porous framework of the zeolite. The silver zeolite is in a charge balance neutral state as a whole. Silver ions in the zeolite can move freely in the zeolite pores. After the silver-containing zeolite is soaked into seawater, the silver-containing zeolite can undergo a cation exchange reaction with the seawater: sodium ions in the seawater are exchanged and moved into the zeolite to change the zeolite into sodium-containing zeolite; silver ions in the zeolite leave the zeolite and enter the seawater to react with chloride ions in the seawater to form silver chloride precipitates. The efficient precipitation of silver ions by chloride ions drives the ion exchange reaction to continue until the zeolite is almost completely depleted of silver ions. Both the sodium containing zeolite and silver chloride precipitate are solid precipitates which can be removed by simple filtration. This is the working principle of silver-containing zeolite desalination agent to remove sodium chloride from sea water.
The silver-containing zeolite is supported and fixed on the base fabric material, so that the zeolite does not exist in the form of powder, and the fiber fabric is used as the base material, so that a uniform porous structure can be formed, and the size of the pore canal is in the order of a few micrometers to hundreds of micrometers, thereby facilitating the quick passing of seawater. If the silver-containing zeolite powder is directly filled in the filtering column, gaps among silver-containing zeolite powder particles are small, the flow rate of seawater is too slow, the treatment efficiency is affected, and other impurities can be brought to drinking water. If silver-containing zeolite powder is secondarily processed into particles with a size larger than millimeter, the ion exchange reaction speed is affected due to the fact that the particle size is too large and the binder is used, ion exchange reaction cannot be completed within a period of time when seawater flows through, and the desalting effect is poor. Therefore, the prior art generally carries out quantitative and integral mixing reaction on silver-containing zeolite powder and seawater, and then carries out manual extrusion filtration by using a filter bag after the reaction is finished. Under the condition that the size of zeolite particles is kept small, the silver-containing zeolite fabric material provided by the invention forms a macroporous structure by the fiber fabric material, so that the flow resistance of seawater is reduced, and the prepared filtering column keeps the capability of rapidly completing ion exchange reaction and also keeps a higher water flow speed.
The molar ratio of silicon atoms to aluminum atoms in the silver-containing zeolite is 1-1.5:1. the lower the silica-alumina ratio value, the higher the proportion of aluminum atoms on the zeolite material framework, and the higher the negative charge density on the framework. While the highest silver content in the silver-containing zeolite depends on the density of negative charges carried by the zeolite framework, the higher the density, the higher the upper silver content limit of the silver-containing zeolite; the higher the silver content, the more seawater per weight of silver-containing zeolite can be treated, the less weight and volume of the filter column is required to obtain the same volume of fresh water, and the lower the cost. The fabric material based on the silver-containing zeolite selects the silver-containing zeolite with the mole ratio of silicon atoms to aluminum atoms of 1-1.5:1, ensures the content of silver ions in the silver-containing zeolite in unit weight, and is beneficial to reducing the volume and weight of a filtering column.
Because the fiber fabric material has a certain filtering and isolating effect, colloidal solid precipitates such as silver chloride, barium sulfate and the like formed in the sea water desalination process can be directly adsorbed and trapped, so that the fresh water flowing out of the filtering column only contains a very small amount of suspended particles, and no additional treatment is needed.
The above-mentioned one fabric material based on silver-containing zeolite, as a preferred embodiment, further comprises a barium-containing zeolite, which is also attached to the fiber fabric. The barium ion and silver ion may be present in all of the zeolite on a piece of fabric material at the same time or may be present in different zeolites in different portions of the fabric separately.
Almost all cations in seawater, such as sodium, potassium, calcium and magnesium ions, can exchange with silver ions in zeolite. The removal of the different cations can be accomplished by ion exchange with a silver-containing zeolite. The exchanged silver ions theoretically react with anions in the seawater to generate silver chloride, silver sulfate and silver carbonate precipitates, thereby removing chloride ions, sulfate ions and carbonate ions. However, in practice, only silver chloride has a very small solubility product, so that the removal efficiency of chloride ions is very high. The solubility product of the silver sulfate and the silver carbonate formed by sulfate radical, carbonate radical and silver ion is larger, and the removal efficiency is lower. Therefore, if only the silver-containing zeolite is used as a single active component for desalting the real sea water, the concentration of silver ions, sulfate radicals and carbonate radicals in the obtained aquatic product is higher, and the safety and the taste of the water are affected. Barium hydroxide is also commonly added as an auxiliary reagent to conventional powdered seawater desalination agents. The hydroxide can precipitate magnesium ions, and the dosage of silver is reduced. The barium ions can precipitate sulfate radical, so that the concentration of silver ions and sulfate radical ions in the prepared drinking water is reduced. Can simultaneously have the triple effects of reducing cost, improving water quality and improving taste. However, if the sulfate concentration is less than the predetermined concentration, the barium salt may be added in excess, and the free barium ion may be extremely toxic, possibly causing a poisoning risk.
The silver-containing zeolite based fabric material of the present invention may also contain a barium-containing zeolite. The barium ions in the barium-containing zeolite are used for exchanging metal cations in the seawater, such as sodium ions, potassium ions, magnesium ions and calcium ions, and then barium sulfate precipitation is generated with sulfate radicals in the seawater, so that the sulfate radical removal rate is improved. In the present invention, the barium ion added is not a soluble barium salt, but a barium-containing zeolite. After the salt in the seawater is basically removed, excessive barium ions cannot be dissolved out, so that the seawater concentration device can adapt to different seawater concentrations without the need of self-adjusting the proportion by a user. And is convenient to use, and can be drunk while filtering, when the filtrate becomes salty, the silver-containing zeolite-based fabric material has lost the desalting function, and the risk of excessive barium ions is avoided in the process.
The above-mentioned textile material based on silver-containing zeolite, as a preferred embodiment, has a molar ratio of silver ions to barium ions on the textile fabric of 10-25:1.
in a preferred embodiment of the above fabric material based on silver-containing zeolite, the fiber fabric is gauze, cotton, nonwoven or cotton fiber. The silver-containing zeolite can be directly made into a filter column by being attached to cotton fibers. Cotton fibers themselves are not generally included in the concept of a fabric, but when packed into a filter column tube, they also overlap to form a nonwoven-like structure and are therefore included in the scope of the invention.
In the preparation of silver-containing zeolites, sodium-containing zeolite is generally synthesized first, and then soaked in an aqueous solution of silver nitrate to change sodium ions in the zeolite into silver ions by ion exchange. This reaction generally fails to one hundred percent exchange all sodium ions for silver ions, thus yielding an indication of the ion exchange rate. In the present invention, the silver ion exchange rate is defined as the percentage of sodium ions in the raw material sodium zeolite that are replaced with silver ions. If the product is tested to give a molar ratio of silver to sodium of 9:1 represents that 90% of the sodium ions in the original zeolite are replaced with silver ions. The silver ion exchange rate was defined as 90% at this time. In the preparation of barium-containing zeolite, the exchange ratio of barium ions to sodium ions is 1:2, one barium ion can exchange two sodium ions. Thus when the molar ratio of barium to sodium in the test product is 9:2, it represents that 90% of the sodium ions have been replaced by barium ions. The exchange rate of barium ions at this time was defined as 90%. In the present invention, in order to improve efficiency, silver-containing zeolite fabric materials having a high ion exchange rate are used for sea water desalination.
A second aspect of the present application provides the use of a silver-containing zeolite based fabric material in desalination of sea water.
In the above application, as a preferred embodiment, the silver-containing zeolite fabric material is packed in a filter tube, and the desalination is achieved by filtering seawater, preferably the filter tube is a water tube.
The application is that, as a preferred embodiment, the water flow speed in the water pipe filled with the silver-containing zeolite fabric is 0.5-10ml min when the seawater is desalted -1 cm -2 。
Seawater flows in from the water inlet of the filter pipe, is filtered by the silver-containing zeolite-based fabric material filled in the filter pipe, and is subjected to chemical reaction with the silver-containing zeolite-based fabric material to generate sodium-containing zeolite, silver chloride sediment and barium sulfate sediment, and fresh water obtained after desalination reaction flows out from the water outlet of the filter pipe to be drunk, so that the operation is simple and long-time waiting is not needed.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the fabric material based on the silver-containing zeolite, the silver-containing zeolite and the fiber fabric are compounded to form the porous structure, so that seawater can be automatically and uniformly mixed while flowing through the fabric material, manual shaking is not needed, and the physical strength and time of a user are saved.
(2) When the fabric material based on the silver-containing zeolite is used for filtering seawater, the filtering operation is automatically finished by gravity or water pressure, manual extrusion is not needed, and the operation is convenient.
(3) When the fabric material based on the silver-containing zeolite is used for filtering seawater, the fresh water remained in the fabric material can be flushed by the seawater and is completely collected into drinking water, and the fabric material has no residual fresh water, i.e. the service efficiency of the fabric material is high and can reach 100%.
(4) When the fabric material based on the silver-containing zeolite is used for filtering seawater, fresh water can be drunk while the fresh water is discharged, the fresh water can be prepared and drunk without waiting for complete reaction, and the time is saved.
(5) When the silver-containing zeolite fabric material is used for filtering seawater, toxic substances are not generated due to excessive barium salt addition, the use is convenient, and when the filtrate becomes salty, the reactant is exhausted, and the risk of excessive barium ions is avoided.
Although the salt concentration of the seawater in the ocean in each region is relatively stable and the difference is not large, the salt concentration in special regions such as the tropical sea area near the river mouth of the large river can fluctuate relatively more. The proportion of the desalting agent mainly containing silver zeolite to the seawater must be strictly determined in advance before the conventional desalting agent is used, and when the desalting agent is used in sea areas with unknown concentration, the proportion is difficult to be automatically adjusted by people in distress. In the case of sulfate concentrations less than the predetermined concentration, the barium salt may be added in excess, while the free barium ions may be extremely toxic and may cause a poisoning hazard. The barium ions based on the silver-containing zeolite fabric material are presented in the form of barium-containing zeolite, and no soluble barium salt exists, so that even if the barium ions are excessive, the barium ions cannot be dissolved into fresh water obtained by production. The silver-containing zeolite-based fabric material according to the invention can thus be adapted to different sea water concentrations, i.e. when the filtrate becomes salty, i.e. represents that the reactants have been consumed without the risk of excess barium ions.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
According to the fabric material based on the silver-containing zeolite, the fiber fabric is used as a base material, and the silver-containing zeolite and the barium-containing zeolite are attached to the fiber fabric, so that seawater can be filtered rapidly and effectively to form fresh water. Almost all cations in the seawater can exchange with silver ions and barium ions in the zeolite, the exchanged silver ions can be combined with chloride ions in the seawater to form precipitation, the exchanged barium ions can react with sulfate ions in the seawater to form precipitation, no excessive barium ions are generated in the reaction process, namely no toxic substances are generated, and in the seawater filtering process, the seawater filtering and drinking can be performed simultaneously, and the seawater filtering and purifying process is rapid and efficient.
When the silver-containing zeolite fabric material is used for filtering seawater, the filtering can be realized by relying on the gravity of water without additional devices or extrusion, and 100% of the filtered dilute brine can flow out, so that the utilization rate is high.
Example 1
A silver-containing zeolite based fabric material as described in example 1, comprising a silver-containing zeolite and a fibrous fabric, the silver-containing zeolite being adhered to the fibrous fabric by coating bonding with an inorganic binder. Firstly, preparing common zeolite powder and an inorganic binder into slurry, and then coating the slurry on a fiber fabric material by a doctor blade method; after drying and curing, the zeolite-containing fabric material was ion exchanged by immersing in 0.5 moles per liter of silver nitrate solution. A small amount of nitric acid was added dropwise to the silver nitrate solution, and the pH was adjusted to about 5.0. Ion exchange was performed under dark conditions at a treatment temperature of 60 degrees. After 2 hours of exchange, the fresh silver nitrate solution was replaced and exchanged again. And then washed clean with deionized water. And drying to obtain the silver-containing zeolite fabric material. The ratio of the amount of the silver-containing zeolite to the total amount of the silver-containing zeolite and the fiber fabric is controlled to be more than 15% by controlling the coating thickness of the slurry.
As a preferred embodiment, the silver-containing zeolite used in this example is a type A zeolite having a molar ratio of silicon atoms to aluminum atoms of 1.15:1, a step of; the silver-containing zeolite load is 41%, the silver ion exchange degree is 89%, and the adopted fiber fabric is cotton cloth.
Example 2
Example 2 describes a fabric material based on a barium-containing zeolite comprising a barium-containing zeolite and a fibrous fabric, the barium-containing zeolite being attached to the fibrous fabric. Firstly, the surface of the fabric is modified by a silane coupling agent, and then the modified fabric is put into an organic dispersion liquid of zeolite and heated for 90 degrees. The silicon hydroxyl groups on the surface of the zeolite react with the silicon hydroxyl groups on the surface of the silane coupling agent, and are crosslinked together to fix the zeolite on the fiber fabric. The zeolite-loaded fabric was soaked in 1 mole per liter of barium chloride aqueous solution for 24 hours. Washing and drying with deionized water to obtain the barium-containing zeolite fabric material. The ratio of the amount of the barium-containing zeolite to the total amount of the barium-containing zeolite and the fiber fabric is more than 15%,
as a preferred embodiment, the barium-containing zeolite used in this example is chabazite, the molar ratio of silicon atoms to aluminum atoms in the barium-containing zeolite being 1.5:1, a step of; the loading of the barium-containing zeolite is 18%, the exchange degree of barium ions is 65%, and the adopted fiber fabric is cotton cloth.
Example 3
Example 3 a silver-containing zeolite-based fabric material comprising a silver-containing zeolite and a fibrous fabric, the silver-containing zeolite being attached to the fibrous fabric. The silver-containing zeolite fabric material used in this example was a zeolite fabric material prepared by in situ hydrothermal growth. The silver-containing zeolite fabric is prepared by immersing the silver-containing zeolite fabric in 0.2 mol/L silver nitrate aqueous solution with the pH value of 5.5, carrying out ion exchange under dark conditions, replacing fresh silver nitrate aqueous solution four times within 24 hours, washing with ultrapure water, and drying. By controlling the reaction conditions, the ratio of the silver-containing zeolite to the total amount of the silver-containing zeolite and the fiber fabric is ensured to be more than 15 percent,
as a preferred embodiment, the silver-containing zeolite on the fabric material prepared in this example is P-type zeolite, and the molar ratio of silicon atoms to aluminum atoms in the silver-containing zeolite is 1.36:1, a step of; the loading of the silver-containing zeolite is 39%, the exchange degree of silver ions is 85%, and the adopted fiber fabric is absorbent cotton gauze.
Example 4
A fabric material based on silver-containing zeolite according to example 4, comprising zeolite containing both silver and barium and fabric, wherein zeolite containing both silver and barium is attached to the fabric, and wherein the amount of zeolite containing both silver and barium is greater than 15% of the total amount of the composite fabric, in this example, we selected a zeolite gauze material from the company, the mole ratio of silicon atoms to aluminum atoms in the zeolite being 1.12:1. it is immersed in a mixed aqueous solution of silver nitrate and barium nitrate. The concentrations of the two were 0.3 mol/liter and 0.03 mol/liter, respectively. The soaking liquid is replaced every four hours, and after the soaking liquid is replaced for three times, the soaking liquid is cleaned by purified water and then dried. The zeolite composite fabric material containing silver ions and barium ions is prepared.
As a preferred embodiment, the zeolite of the fiber fabric in this example is a type a zeolite with a loading of 45%, wherein the degree of exchange of silver ions is 72%, the degree of exchange of barium ions is 7.5%, and the molar ratio of silver ions to barium ions is 19.2:1. the fiber fabric is absorbent cotton gauze.
The invention relates to a research on the filtration performance of a seawater desalination and filtration device based on silver-containing zeolite
1. 50g of a silver zeolite-based fabric material described in example 1 was packed into a plastic tube having an inner diameter of 1.5cm and compacted to form a filter column, and 3.5% sodium chloride solution was used as simulated seawater, slowly poured from the top of the filter column, and the filtrate filtered from the filter column was collected and examined for its desalting effect.
In the test process, the filtration speed of the simulated seawater is 1mlmin -1 cm -2 The total amount of soluble solids (TDS) was measured once per 20ml filtrate and the results are shown in table 1:
table 1 filtration properties based on silver-containing zeolite fabric material as shown in example 1
| Volume of filtrate | 20ml | 40ml | 60ml | 80ml | 100ml | 120ml | 140ml | 160ml | 180ml |
| TDS ppm | 98 | 15 | 13 | 11 | 9 | 7 | 8 | 7 | 9770 |
Remarks: the TDS index in normal tap water is usually about 100-300ppm, and the TDS index of purified water is about 10 ppm.
As can be seen from table 1: according to the fabric material based on the silver-containing zeolite, when the fabric material only contains the silver-containing zeolite, sodium chloride in seawater can be thoroughly removed to the extent of purifying water, about 160ml of fresh water is obtained by 50g of gauze, and when the seawater flowing through the filtering column exceeds 160ml, silver ions in the zeolite are exhausted, and more concentrated brine begins to flow out.
2. 200g of a material based on a silver-containing zeolite fabric as described in example 1 were packed on average into two plastic tubes with an inner diameter of 1.5cm, respectively, to form a filter column 1 and a filter column 2. The filter column 1 uses 3.5% pure sodium chloride aqueous solution as simulated seawater. The filter column 2 is prepared by dissolving 3.977 g anhydrous sodium sulfate, 10.938 g magnesium chloride hexahydrate and 25.480 g sodium chloride in 1000 g water to prepare simulated seawater containing sodium ions, magnesium ions, chloride ions and sulfate ions. Pouring the two simulated seawater into the filtering column 1 and the filtering column 2 respectively, collecting filtrate, and detecting the filtering effect.
In the test process, the filtration speed of the simulated seawater is 5mlmin -1 cm -2 The total amount of soluble solids (TDS) tested per 40ml filtrate is shown in table 2:
TABLE 2
Remarks: the TDS index theoretical value of the original liquid of the simulated seawater is 35000ppm; the TDS value of the filtrate after the collection of filtrate greater than 320ml is outside the equipment span range (> 10000 ppm).
As can be seen from table 2: when the fabric material only contains silver zeolite, the filtering column can remove almost all sodium chloride (> 99.96%) if pure sodium chloride aqueous solution is taken as simulated seawater. However, if the sulfate-containing aqueous solution is used as the simulated seawater, the filter column can only remove most of salts (91.5-94.6%) in the simulated seawater, but a larger amount of salts still remain in the filtrate, and the TDS index of the filtrate is close to 2000. The purification effect is not ideal, mainly because the silver-containing zeolite cannot effectively remove sulfate ions.
3. 100g of a textile material based on silver-containing zeolite as described in example 1 were packed into plastic tubes with an inner diameter of 1.5cm and compacted to form a filter column. 3.977 g of anhydrous sodium sulfate, 10.938 g of magnesium chloride hexahydrate and 25.480 g of sodium chloride are dissolved in 1000 g of water to prepare simulated seawater containing sodium ions, magnesium ions, chloride ions and sulfate ions, the simulated seawater is poured into a filter column, and the filtrate is collected to detect the filtering effect.
In the test process, the filtration speed of the simulated seawater is 1mlmin -1 cm -2 The total amount of soluble solids (TDS) was measured once per 40ml filtrate and the results are shown in table 3.
TABLE 3 Table 3
As can be seen from table 3: when the fabric material only contains silver-containing zeolite, most of salts (about 93.9% -95.9%) in simulated seawater can be removed under the condition of low flow rate, but a part of salts still remain in the filtrate. The purification effect is not very desirable, mainly because silver-containing zeolite alone is not effective in removing sulfate ions. By reducing the water flow rate, only slightly better desalting effect was obtained than in the case of rapid filtration (test example 2). It is explained that the filtration rate has a relatively small influence on the salt rejection rate within a certain range.
4. 100g of a fabric material based on barium-containing zeolite as described in example 2 were packed into a plastic tube with an inner diameter of 1.5cm and compacted to form a filter column. The condition of containing sulfate radical in sea water is simulated by 0.4% sodium sulfate aqueous solution. Pouring the sodium sulfate aqueous solution into a filtering column, collecting filtrate, and detecting the filtering effect.
In the test process, the filtration speed of the simulated seawater is 5mlmin -1 cm -2 . The total amount of soluble solids (TDS) was measured once per 100 ml filtrate and the results are shown in table 4:
TABLE 4 Table 4
| Volume of filtrate ml | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 |
| TDS ppm | 186 | 48 | 23 | 13 | 12 | 45 | 231 | 450 | 1300 | 1825 | 2506 |
Remarks: the TDS index in normal tap water is usually about 100-300ppm, and the TDS index of purified water is about 10 ppm.
As can be seen from table 4: when the barium-containing zeolite fabric material is used for filtering, sodium sulfate in water can be desalted thoroughly during early filtering, and the degree of water purification is achieved. However, the removal of sulfate by barium-containing zeolite has a significant change in the residual TDS of the filtrate compared to the removal of sodium chloride by silver-containing zeolite. When the silver-containing zeolite is used for removing sodium chloride, the TDS of the filtrate is always kept at a lower value, after the filtrate reaches a certain volume, silver ions in the zeolite consume light, the desalting effect is immediately lost, and the TDS of the filtrate rapidly and rapidly rises after reaching an inflection point. However, when sodium sulfate was removed using the barium-containing zeolite, the early filtrate remained low in TDS value and began to rise slowly in the later stage (after 700 ml).
The above phenomenon can be explained by the fact that the exchange speed of silver ions is kept high in the whole process, and after the silver ions in the solution are precipitated and consumed, the silver ions in the zeolite can be quickly re-exchanged into the solution. However, the exchange speed of barium ions is gradually reduced in the use process, and when the flow speed is high, the barium ions are difficult to quickly supplement. The possible reason is that the migration velocity in zeolite is slower because barium ions are more positively charged, which is related to strong interactions with zeolite. The results prove that the barium-containing zeolite can achieve a very good sulfate removal effect within a certain filtrate volume range. The minimum TDS can be reduced to around the purity range of purified water.
5. 10g of one of the zeolite-comprising textile materials described in example 2 and 90g of one of the zeolite-comprising textile materials described in example 1 were mixed and packed into a plastic tube having an inner diameter of 1.5cm and compacted to form a filter column. 3.977 g of anhydrous sodium sulfate, 10.938 g of magnesium chloride hexahydrate and 25.480 g of sodium chloride are dissolved in 1000 g of water to prepare simulated seawater containing sodium ions, magnesium ions, chloride ions and sulfate ions, the simulated seawater is slowly poured into a filtering column, filtrate is collected, filtering effect is detected,
in the test process, the filtration speed of the simulated seawater is 5mlmin -1 cm -2 The total amount of soluble solids (TDS) was measured once per 25ml filtrate and the results are shown in table 5:
TABLE 5
As can be seen from table 5: the filtering column is filled with the mixture of the silver-containing zeolite fabric material and the barium-containing zeolite fabric material, and most of salts (about 98.9% -99.5%) in the simulated seawater can be removed under the condition of proper flow rate, and the quality of the effluent is close to the standard of common tap water in TDS index and is obviously better than the effect achieved by the pure silver-containing zeolite fabric material (experimental examples 2 and 3). The pH value of the simulated seawater is 6.5 and the pH value of the fresh water filtrate obtained after filtration are respectively 6.5 and 7.3.
6. 100g of a fabric material based on silver-containing zeolite as described in example 4, the zeolite on the fabric containing both silver ions and barium ions, was packed into a plastic tube having an inner diameter of 1.5cm and compacted to form a filter column. 3.977 g of anhydrous sodium sulfate, 10.938 g of magnesium chloride hexahydrate and 25.480 g of sodium chloride are dissolved in 1000 g of water to prepare simulated seawater containing sodium ions, magnesium ions, chloride ions and sulfate ions, the simulated seawater is poured into a filter column, and the filtrate is collected to detect the filtering effect.
In the test process, the filtration speed of the simulated seawater is 5mlmin -1 cm -2 The total amount of soluble solids (TDS) was measured once per 30ml filtrate and the results are shown in table 6:
TABLE 6
Remarks: when the filtrate is more than 330ml, the TDS of the filtrate is out of range (> 10000 ppm).
As can be seen from table 6: the silver-containing zeolite fabric material according to the embodiment 4 of the present invention (the fabric material has both silver-containing and barium-containing zeolite attached thereto) can remove most of the salts (about 99.4% -99.9%) in the simulated seawater under a proper flow rate condition, and the effluent quality is superior to the standard of ordinary tap water in terms of TDS index, approaching the standard of purified water. The pH value of the filtrate is 7.6, which accords with the water quality standard of the drinking water.
Further, as can be seen from table 6, compared with experimental example 5, the effect of filtering seawater using a silver-containing zeolite fabric material (fabric material having zeolite containing both silver and barium attached thereto) according to the present invention was superior to that of a mixture of silver-containing zeolite fabric material and barium-containing zeolite fabric material, because silver ions and barium ions were uniformly distributed in the filter column while simultaneously removing chloride ions and sulfate ions in seawater.
7. 100 grams of the zeolite gauze of example 4, both silver and barium, was packed into a plastic tube having an inner diameter of 1.5cm and compacted to form a filter column. 53.90 g of sodium chloride, 11.54 g of magnesium chloride hexahydrate, 6.06 g of anhydrous magnesium sulfate, 2.06 g of calcium chloride, 1.46 g of potassium chloride, 0.4 g of sodium bicarbonate, 0.26 g of calcium sulfate dihydrate and 0.15 g of sodium bromide are dissolved in 2000 g of water to prepare simulated seawater which contains sodium ions, magnesium ions, calcium ions, potassium ions, chloride ions, sulfate ions, bicarbonate ions and bromide ions, and has a more complex composition and is closer to real seawater. Slowly pouring the simulated seawater solution into the upper end of a filtering column, collecting filtrate flowing out from the bottom, and detecting the desalting effect. The filtration rate was 1mlmin -1 cm -2 . The Total Dissolved Solids (TDS) were measured once per 30ml filtrate and the results are shown in table 7. As an index of the salt content in the filtrate fresh water. The TDS index of the stock solution of the simulated seawater is 35000ppm.
TABLE 7
The results show that the zeolite fabric material containing silver and barium simultaneously is used for filling the filtering column, so that most of salts (about 99.3% -99.7%) in the simulated seawater which is relatively close to the real seawater complex components can be removed, and the effluent quality is close to the standard of common tap water in TDS index. The pH value of the filtrate is 7.9, which accords with the water quality standard of the drinking water. Fresh water of 100 ml to 400 ml obtained by filtration was mixed, and the concentration of several main ions in the mixed filtrate was analyzed, and the results are shown in table 8. The results show that the filtering column made of the zeolite composite material containing silver and barium can effectively remove most of salts in simulated seawater which is close to the real seawater composition, and the carried silver ions and barium ions are very few. The sum of the concentrations of the ions listed in the table is slightly higher than the TDS value obtained by the TDS test pen, and the sum belongs to the normal error between different test methods.
TABLE 8
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (5)
1. A fabric material based on silver-containing zeolite, characterized in that,
comprises silver-containing zeolite and a fiber fabric, wherein the silver-containing zeolite is attached to the fiber fabric, the weight ratio of the silver-containing zeolite in the total weight of the silver-containing zeolite and the fiber fabric is more than 15 percent, and the mole ratio of silicon atoms to aluminum atoms in the silver-containing zeolite is 1.12:1, a step of;
the silver-containing zeolite fabric material further comprises a barium-containing zeolite, wherein the barium-containing zeolite is attached to the fiber fabric, and the molar ratio of silver ions to barium ions on the fiber fabric is 19.2:1, a step of;
soaking the fabric in a mixed aqueous solution of silver nitrate and barium nitrate, wherein the concentrations of the silver nitrate and the barium nitrate are respectively 0.3 mol per liter and 0.03 mol per liter, replacing the soaking solution once every four hours for three times, washing with purified water, and drying to obtain the zeolite composite fabric material containing silver ions and barium ions.
2. A textile material based on silver-containing zeolite according to claim 1,
the fiber fabric is cotton cloth or non-woven fabric.
3. Use of a textile material based on silver-containing zeolite according to any of claims 1-2 for desalination of sea water.
4. The use according to claim 3, wherein,
the silver-containing zeolite fabric material is stuffed in a filter pipe, and the desalination can be realized by filtering seawater, wherein the filter pipe is a water pipe.
5. The use according to claim 4, wherein,
when desalting seawater, the water flow speed of the water pipe filled with the silver-containing zeolite fabric is 0.5-10mlmin -1 cm -2 。
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1134480A (en) * | 1967-06-14 | 1968-11-27 | Ver Phosphatduengerwerke Veb | Sea water desalting mixture in tablet form |
| GB1406128A (en) * | 1972-02-19 | 1975-09-17 | Bayer Ag | Crystalline zeolite mixtures and a process for desaltizing sea water |
| JPH05176976A (en) * | 1991-12-26 | 1993-07-20 | Kimura Kogyo Kk | Antimicrobial particle |
| CN1432084A (en) * | 2000-06-02 | 2003-07-23 | 美利肯公司 | Yarns and fabrics having wash-durable non-electrically conductive topically applied metal-based finish |
| JP2005313151A (en) * | 2004-03-30 | 2005-11-10 | Toray Ind Inc | Water treatment method |
| CN1974418A (en) * | 2006-12-19 | 2007-06-06 | 国家海洋局天津海水淡化与综合利用研究所 | Sea water desalting agent based on silver carrying acid zeolite and its prepn process |
| JP2010194484A (en) * | 2009-02-26 | 2010-09-09 | Kurita Water Ind Ltd | Water supply treatment apparatus, method of operating the same and humidifier |
| JP2011020072A (en) * | 2009-07-17 | 2011-02-03 | Sinanen Zeomic Co Ltd | Water purifying method, method of manufacturing drinking water, water purifying device and apparatus for manufacturing drinking water |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110024355A1 (en) * | 2007-10-10 | 2011-02-03 | Polymers Crc Ltd. | Antimicrobial membranes |
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2020
- 2020-09-29 CN CN202011053653.8A patent/CN112239247B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1134480A (en) * | 1967-06-14 | 1968-11-27 | Ver Phosphatduengerwerke Veb | Sea water desalting mixture in tablet form |
| GB1406128A (en) * | 1972-02-19 | 1975-09-17 | Bayer Ag | Crystalline zeolite mixtures and a process for desaltizing sea water |
| JPH05176976A (en) * | 1991-12-26 | 1993-07-20 | Kimura Kogyo Kk | Antimicrobial particle |
| CN1432084A (en) * | 2000-06-02 | 2003-07-23 | 美利肯公司 | Yarns and fabrics having wash-durable non-electrically conductive topically applied metal-based finish |
| JP2005313151A (en) * | 2004-03-30 | 2005-11-10 | Toray Ind Inc | Water treatment method |
| CN1974418A (en) * | 2006-12-19 | 2007-06-06 | 国家海洋局天津海水淡化与综合利用研究所 | Sea water desalting agent based on silver carrying acid zeolite and its prepn process |
| JP2010194484A (en) * | 2009-02-26 | 2010-09-09 | Kurita Water Ind Ltd | Water supply treatment apparatus, method of operating the same and humidifier |
| JP2011020072A (en) * | 2009-07-17 | 2011-02-03 | Sinanen Zeomic Co Ltd | Water purifying method, method of manufacturing drinking water, water purifying device and apparatus for manufacturing drinking water |
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| CN112239247A (en) | 2021-01-19 |
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Address after: Room 2-101, No. 291 Fucheng Road, Xiasha Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310026 Patentee after: Hangzhou feichuang Life Technology Co.,Ltd. Address before: 310026 rooms 2-101-1, 2-101-2 and 2-101-3, No. 291, Fucheng Road, Xiasha street, Qiantang New District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOUFEICHUANG MEDICAL TECHNOLOGY Co.,Ltd. |
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