CN106731839B - Ion film plating and forming method thereof and water filtering device - Google Patents
Ion film plating and forming method thereof and water filtering device Download PDFInfo
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- CN106731839B CN106731839B CN201611138537.XA CN201611138537A CN106731839B CN 106731839 B CN106731839 B CN 106731839B CN 201611138537 A CN201611138537 A CN 201611138537A CN 106731839 B CN106731839 B CN 106731839B
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- film plating
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- ion film
- filtering device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 304
- 238000001914 filtration Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000007747 plating Methods 0.000 title claims abstract description 58
- 239000012528 membrane Substances 0.000 claims abstract description 66
- 150000002500 ions Chemical class 0.000 claims abstract description 59
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 41
- 239000011777 magnesium Substances 0.000 claims abstract description 41
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000011575 calcium Substances 0.000 claims abstract description 28
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 23
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 18
- 238000001471 micro-filtration Methods 0.000 claims abstract description 13
- 238000001728 nano-filtration Methods 0.000 claims abstract description 13
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 13
- 238000005374 membrane filtration Methods 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 13
- 239000004571 lime Substances 0.000 claims description 13
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 description 18
- 230000001376 precipitating effect Effects 0.000 description 10
- 239000003814 drug Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 6
- 239000000347 magnesium hydroxide Substances 0.000 description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007733 ion plating Methods 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 description 2
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical group [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 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
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- -1 metals ion Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/027—Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of ion film plating and forming method thereof and water filtering devices, belong to water treatment field.The ion film plating includes membranous system and coating, and membranous system includes any one film in micro-filtration ionic membrane, ultrafiltration ionic membrane and nanofiltration ionic membrane, and coating is set to the surface of membranous system, and coating is mainly by CaCO3With Mg (OH)2It is made.The forming method of the ion film plating are as follows: the water stream channel being set to membranous system between the water inlet of water filtering device and water outlet, the water body containing calcium and magnesium ion is injected into water filtering device, and alkaline matter is added up to the surface of membranous system forms ion film plating from water inlet.The water filtering device for being provided with ion film plating can reduce transmembrane pressure in water treatment procedure, reduce pump energy consumption.The forming method of ion film plating is simple, at low cost, can be used for different water process.
Description
Technical field
The present invention relates to water treatment fields, and in particular to a kind of ion film plating and forming method thereof and water filtering device.
Background technique
Usually reducing the common method of hardness in water has ion exchange, electrodialysis, reverse osmosis and medicament tenderizer.And ion
There are the disadvantages such as involve great expense, operating cost is high, producing water ratio is low in exchange, electrodialysis and hyperfiltration.And lime is that medicament is soft
Most common medicament in change method, its main feature is that it is easy to operate, cost is lower.Hardness in underground water is mainly that bicarbonate is hard
Degree, i.e., " temporary hardness ", lime method have preferable effect to " temporary hardness " in removal underground water.
In conventional water treatment procedure, filtering generally refers to miscellaneous to suspend in the granular filter materials layer trap water such as quartz sand
A kind of matter, most simple, the most common separation method for passing through the substance less than gap, makes water obtain clear technical process.
Currently, domestic water factory is normally applied final step technique of the filter tank as turbidity in removal water body.And conventional filtering, such as sand
Filter, is relatively rough filter method, and particle voids are differed from a few tenths of a mm to several millimeters, and can only substantially filter naked eyes can
The bulky grain seen.And as the pollutant of 0.02 microns, such as other than suspended matter, bacterium, algae, two worm substances, there are also phases
Dissolved organic matter, such as part macromolecule organic such as protein etc. to molecular weight in 1000-300000 or more cannot
Removal.In addition, when using filter, have once in a while filter tank can by unexpected penetration phenomenon (pressure instantaneously increases, in morning filter tank
Muddy object in filtrate aperture is extruded by water body, the phenomenon for causing water body muddy suddenly) occur, so that delivery turbidity instantaneously increases
Greatly, serious consequence is caused.
Micro-filtration used in existing filter tank or ultrafiltration membrane are still to face membrane pollution problem in the process of running, and fouling membrane is led
Cause the increase of film operating pressure or the reduction of water yield.Therefore micro-filtration or ultrafiltration system need periodic flushing or are cleaned with medicament
The water-yielding capacity of ultrafiltration system can be just maintained, therefore film is also regularly replaced in addition to wanting periodic cleaning.
Summary of the invention
The purpose of the present invention is to provide a kind of ion film platings, and the ion film plating ingredient is simple, and source is wide.
The second object of the present invention is to provide a kind of forming method of ion film plating, and this method is simple, at low cost, can use
In different water process.
The third object of the present invention is to provide a kind of water filtering device including ion film plating, which can
Reduce the transmembrane pressure and pump energy consumption in water treatment procedure.
The present invention solves its technical problem and adopts the following technical solutions to realize:
The present invention proposes that a kind of ion film plating, including membranous system and coating, membranous system include micro-filtration ionic membrane, ultrafiltration ion
Any one film in film and nanofiltration ionic membrane, coating are set to the surface of membranous system, and coating is mainly by CaCO3With Mg (OH)2System
At.
The present invention also proposes a kind of forming method of ion film plating: by membranous system be set to the water inlet of water filtering device with
Water stream channel between water outlet injects the water body containing calcium and magnesium ion into water filtering device, and basic species are added from water inlet
The upright surface to membranous system forms ion film plating.
Ion film plating proposed by the present invention can be applicable to water filtration art, such as including submerged membrane system or pressure type
In the filtering technique system of film.Meanwhile the present invention also proposes a kind of water filtering device including above-mentioned ion film plating, the ion plating
Film is detachably set to the water stream channel between the water inlet of water filtering device and water outlet.
The beneficial effect of ion film plating of the embodiment of the present invention and forming method thereof and water filtering device is: by by membrane system
System is set to the water stream channel between the water inlet of water filtering device and water outlet, raw water and alkaline matter and is entered by water inlet
Water filtering device, the Ca in raw water2+And Mg2+The CaCO generated with alkali substance reaction3With Mg (OH)2It is deposited on membranous system surface
It forms coating and ultimately forms ion film plating.Traditional view is thought, this by CaCO3With Mg (OH)2The plated film of formation can hinder water
Molecule passes through, and influences filter efficiency.But discovery is summarized for a long time by inventor, with CaCO3With Mg (OH)2Continuous deposition, it is this
Plated film will not reduce filter efficiency within the scope of certain thickness, can rationally utilize the Ca in raw water instead2+And Mg2+, save alkali
The consumption of property substance；And by the way that the ion film plating is arranged in water filtering device, except the consumption reduced in water treatment procedure
Electricity and running cost also reduce transmembrane pressure and pump energy consumption, extend the service life of film.The formation of above-mentioned ion film plating
Method is simple, at low cost, economic and practical.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for the water filtering device that the embodiment of the present invention 9 provides.
Icon: 100- water filtering device；110- water inlet；120- water outlet；130- ion film plating；140- suction pump.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Below to the formation side of the ion film plating of the embodiment of the present invention, water filtering device and water filtering device intermediate ion plated film
Method is specifically described.
Water filtering device provided in an embodiment of the present invention can for example be mainly used in groundwater treatment, can be used for it
His any water body containing calcium and magnesium ion.Because the water body containing calcium and magnesium ion water quality characteristic first is that hardness is higher in water,
Therefore sofening treatment would generally be carried out to such water body in water treatment procedure.Softening method generally comprise ion-exchange, electromagnetic method,
Membrane separation process and method for dosing medicine.Its ion exchange methods uses specific cation exchange resin, with sodium ion by the calcium and magnesium in water
Ion exchange comes out, since the solubility of sodium salt is very high, so the case where avoiding the raising with temperature and scale is caused to generate；
Electromagnetic method changes the characteristic of ion using certain electric field or magnetic field is added in water, to change calcium carbonate or magnesium carbonate
The physical characteristic when speed and deposition of deposition prevents the formation of hard scale, and being not sufficiently stable property of this method effect do not unify
Measurement standard, and since major function is only the physical property for influencing a certain range of scale, so treated water
Using the time, distance have certain limitation；Membrane separation process nanofiltration membrane (NF) and reverse osmosis membrane (RO) can intercept in water
Calcium ions and magnesium ions, to fundamentally reduce the hardness of water, but hardness can only be dropped to certain range and to influent pressure by this method
Power has higher requirements, and equipment investment, operating cost are all higher；Alkaline matter is added into water for method for dosing medicine, makes the calcium and magnesium in water
Ion precipitation is suitble to the high hardness of scope of application big flow.Overall cost and efficiency consider, preferably use in the embodiment of the present invention
Method for dosing medicine carries out water process.Wherein, added drug is alkaline matter, and alkaline matter is in conjunction with the water body containing calcium and magnesium ion
Generate CaCO3With Mg (OH)2.In order to avoid the alkaline matter added by water treatment procedure introduces new metal ion, it is preferred that
The alkaline matter for example may include at least one of white lime and caustic soda.
Specifically, the water filtering device of the embodiment of the present invention includes ion film plating, which is set to water filtering dress
The water stream channel between water inlet and water outlet set.It is raw after the filtration that the raw water injected in water inlet passes through ion film plating
At producing water and being flowed out from water outlet, to play the role of purified water.
Preferably, above-mentioned ion film plating includes membranous system and coating, wherein membranous system includes micro-filtration ionic membrane, ultrafiltration
Ionic membrane and nanofiltration ionic membrane, the membranous system can be used in the filtering technique system containing submerged membrane or pressure type film.Wherein,
Submerged membrane filtering technique is a kind of novel membrane technology, is that ultralow pressure doughnut membrane technology is mutually tied with Continuous Membrane Filtration technology
A kind of novel film filtration treatment technique closed and derived from.It uses open hollow fiber film component, and film is directly set
In the membrane cisterna full of pending water, by the negative-pressure ward and atmospheric pressure of pump, make water through film surface, from hollow-fibre membrane
Inside extraction, to achieve the purpose that filtration, purification.The aperture of the membranous system in ion film plating in the embodiment of the present invention is preferred
It is 0.001-0.01 μm, which only allows hydrone and beneficial mineral matter in a small number of water and microelement to pass through, and because most
The volume of small bacterium is all at 0.02 μm or more, therefore bacterium and colloid more bulky than bacterium, iron rust, suspended matter, silt and big point
Sub- organic matter can be retained down by the membranous system, to realize purification process.Wherein, when the aperture of membranous system is 0.001 μm
When, which is that nanofiltration ionic membrane forms the plated film and need certain pressure under this condition, it is preferred that can be in the embodiment of the present invention
Water filtering device is sealed, water body is pressurized in water inlet using elevator pump or booster pump, water is promoted to water filtering
In device.In addition, the membranous system can for example have multiple empty fiber membrane components, multiple empty fiber membrane component is set to water filtering
In device, coating is set to the surface of membranous system, such as can only be set to a side surface of membranous system, can also set simultaneously
Be placed in two side surfaces of membranous system, but the latter compared with the former to the filter effect of water more preferably.The process that coating is formed is as follows: Xiang Shui
The water inlet of filter device injects the water body containing calcium and magnesium ion, and alkaline matter is added.Preferably, water body and alkaline matter
It being added simultaneously to water inlet, the inventory of alkaline matter and the ratio of water body for example can be 1-2000mg:1L, so that the two
Mixed effect is best, to make the part metals ion in water body, such as Ca2+And Mg2+Precipitating completely.In addition, can also enter into
Mix water body and alkaline matter before the mouth of a river, but the incorporation time both in the case of this is preferably 4-6min, to prevent the two
Undercompounding.
Alkaline matter generates CaCO in conjunction with the water body water containing calcium and magnesium ion3With Mg (OH)2Principle it is as follows:
To add white lime Ca (OH)2For be illustrated: Xiang Shuizhong and add alkaline matter, contained in alkaline matter
OH-With the substance such as Ca for generating hardness in water2+And Mg2+It is combined.Firstly, hardness in water body of the removal containing calcium and magnesium ion
Committed step mainly by adding Ca (OH)2Promote HCO3 -CO is generated in conjunction with OH-3 2-Or the CO to dissociate in water2With
OH-Reaction generates CO3 2-, reaction equation is as follows:
HCO3 -+OH-→CO3 2-+H2O,
CO2+2OH-→CO3 2-+H2O,
And then the Ca in water2+With CO3 2-Reaction generates CaCO3Precipitating；Mg in water2+Precipitating mainly pass through it is following anti-
Should carry out:
Mg(HCO3)2+Ca(OH)2→CaCO3↓+MgCO3↓+2H2O,
MgCO3↓+Ca(OH)2→CaCO3↓+Mg(OH)2↓,
Wherein MgCO formed by the first reaction3Solubility is higher, also need again with Ca (OH)2Second step reaction is carried out, is generated
The Mg (OH) of solubility very little2, overall reaction are as follows:
Mg(HCO3)2+2Ca(OH)2→2CaCO3↓+Mg(OH)2↓+2H2O,
In addition, Xiang Shuizhong, which adds white lime, to be converted to magnesium hydroxide for the substance containing magnesium of noncarbonate in water:
MgSO4+Ca(OH)2→Mg(OH)2↓+CaSO4,
MgCl2+Ca(OH)2→Mg(OH)2↓+CaCl2。
At this point, then forming wadding body turbid in water of the membranous system close to water inlet side in water treatment facilities.Further, exist
The water outlet of water body processing apparatus connects suction pump, and when starting suction pump, membranous system then forms negative pressure close to water outlet side,
Make the water body of the side by membranous system in conjunction with gravity suffered by the water body of water inlet side and atmospheric pressure, and the portion in wadding body turbid
Divide CaCO3With Mg (OH)2Precipitating forms coating with the surface that the flow direction of water body is deposited on membranous system, and volume is greater than in wadding body turbid
The substance in membranous system aperture is then trapped within water inlet side.Implementation of the present invention is collectively formed in the coating and its membranous system plated
Ion film plating in example.Preferably, CaCO in coating3With Mg (OH)2Weight ratio such as can be 1-3:1, the thickness of coating
Degree for example can be 0.001-2mm, and the thickness of plated film for example can be 0.06-4mm, and the weight ratio and the thickness range can be protected
Card coating and plated film can play preferable filter effect.
In addition, ion film plating according to the present invention can not also pass through Ca in water body2+、Mg2+Deposition formed, but
Directly membranous system is processed, is plated on its surface containing CaCO3With Mg (OH)2Coating.And according to different water process feelings
Condition can also plate multilayer coating in process such as the amount to be processed of water body on membranous system.In practical application, by the membrane system
System is detachably set in water treatment facilities, and the water stream channel between the inlet and outlet of water filtering device is such as arranged in,
And make coating towards water inlet side.
By the way that ion film plating of the present invention is arranged in water treatment facilities, can effectively remove containing calcium, magnesium from
Temporary hardness in the water body of son and particulate matter, algae, virus and bacterium in water body etc. not only avoid frequent regular
Filter membrane is replaced, the transmembrane pressure in water treatment procedure can also be reduced, reduce the energy consumption of pump.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
Select aperture for 0.01 μm only comprising 1 empty fiber membrane component micro-filtration ionic membrane be placed in water filtering device into
Water stream channel between the mouth of a river and water outlet, from the water inlet of water filtering device water body of the injection containing calcium and magnesium ion and simultaneously
The white lime that weight ratio is 1L:1mg is added into the water body, is formed in water body and contains CaCO3With Mg (OH)2The wadding body of precipitating is turbid
Liquid.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2The negative pressure then formed by water outlet side is together with water body
It is moved to water outlet, wherein CaCO3With Mg (OH)20.001mm is formed with the surface that weight ratio 1:3 is deposited on micro-filtration ionic membrane
Coating, and the plated film constituted together with micro-filtration ionic membrane with a thickness of 0.06mm, filtration of the water body through the plated film is from water outlet
Mouth extraction.
Embodiment 2
Select aperture for 0.006 μm of the nanofiltration ionic membrane comprising 2 empty fiber membrane components be placed in water filtering device into
Water stream channel between the mouth of a river and water outlet, from the water inlet of water filtering device injection contain, the water body of magnesium ion and simultaneously to
The caustic soda that weight ratio is 1L:2000mg is added in the water body, is formed in water body and contains CaCO3With Mg (OH)2The wadding body of precipitating is turbid
Liquid.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2The negative pressure then formed by water outlet side is together with water body
It is moved to water outlet, wherein CaCO3With Mg (OH)2Each empty fiber membrane group in ultrafiltration ionic membrane is deposited on weight ratio 1:1
The surface of part forms the coating of 2mm, and the plated film with a thickness of 4mm, mistake of the water body through the plated film are constituted together with ultrafiltration ionic membrane
Filter effect is extracted out from water outlet.
Embodiment 3
Select aperture for 0.005 μm of the ultrafiltration ionic membrane comprising 3 empty fiber membrane components be placed in water filtering device into
Water stream channel between the mouth of a river and water outlet, from the water inlet of water filtering device water body of the injection containing calcium and magnesium ion and simultaneously
The caustic soda and white lime mixture that weight ratio is 1L:1000mg are added into the water body, is formed in water body and contains CaCO3And Mg
(OH)2The wadding body turbid of precipitating.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2Then pass through water outlet side shape
At negative pressure and the water outlet in the same direction of water body one move, wherein CaCO3With Mg (OH)2Nanofiltration ion is deposited on weight ratio 2:1
The surface of each empty fiber membrane component forms the coating of 1mm in film, and the plating with a thickness of 4mm is constituted together with nanofiltration ionic membrane
Film, filtration of the water body through the plated film are extracted out from water outlet.
Embodiment 4
Select aperture for 0.005 μm of the micro-filtration ionic membrane comprising 3 empty fiber membrane components be placed in water filtering device into
Weight ratio is added into the water body to be intake containing calcium and magnesium ion before water inlet in water stream channel between the mouth of a river and water outlet
For the caustic soda and white lime mixture of 1L:1000mg, the two is injected in water filtering device after mixing 4min from water inlet, in water body
Formation contains CaCO3With Mg (OH)2The wadding body turbid of precipitating.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2Then
The negative pressure and the water outlet in the same direction of water body one formed by water outlet side moves, wherein CaCO3With Mg (OH)2With weight ratio 2:
1 surface for being deposited on each empty fiber membrane component in micro-filtration ionic membrane forms the coating of 0.5mm, and the structure together with micro-filtration ionic membrane
At the plated film with a thickness of 2.03mm, filtration of the water body through the plated film is extracted out from water outlet.
Embodiment 5
Aperture is selected to be placed in the water inlet of water filtering device for 0.01 μm of the ultrafiltration ionic membrane comprising 2 empty fiber membrane components
Water stream channel between mouth and water outlet, weight ratio is added into the water body to be intake containing calcium and magnesium ion before water inlet is
The caustic soda and white lime mixture of 1L:1000mg, the two are injected in water filtering device after mixing 6min from water inlet, shape in water body
At containing CaCO3With Mg (OH)2The wadding body turbid of precipitating.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2Then lead to
The negative pressure and the water outlet in the same direction of water body one for crossing the formation of water outlet side move, wherein CaCO3With Mg (OH)2With weight ratio 2:1
The surface for being deposited on each empty fiber membrane component in ultrafiltration ionic membrane forms the coating of 1.5mm, and the structure together with ultrafiltration ionic membrane
At the plated film with a thickness of 4mm, filtration of the water body through the plated film is extracted out from water outlet.
Embodiment 6
Select aperture for 0.008 μm of the nanofiltration ionic membrane comprising 3 empty fiber membrane components be placed in water filtering device into
Weight ratio is added into the water body to be intake containing calcium and magnesium ion before water inlet in water stream channel between the mouth of a river and water outlet
For the caustic soda and white lime mixture of 1L:1000mg, the two is injected in water filtering device after mixing 5min from water inlet, in water body
Formation contains CaCO3With Mg (OH)2The wadding body turbid of precipitating.Starting is connected to the suction pump of water outlet, CaCO3With Mg (OH)2Then
The negative pressure and the water outlet in the same direction of water body one formed by water outlet side moves, wherein CaCO3With Mg (OH)2With weight ratio 2:
1 surface for being deposited on each empty fiber membrane component in nanofiltration ionic membrane forms the coating of 1mm, and constitutes together with nanofiltration ionic membrane
With a thickness of the plated film of 3.5mm, filtration of the water body through the plated film is extracted out from water outlet.
Embodiment 7
Select aperture for 0.005 μm of the micro-filtration ionic membrane comprising 3 empty fiber membrane components, in each empty fiber membrane component
A surface plate 2 layers with a thickness of 2mm coating formed plated film, every layer of coating contain weight ratio be 1:1 CaCO3And Mg
(OH)2.Above-mentioned plated film is placed in the water stream channel between the water inlet of water filtering device and water outlet, and make coating facing towards into
Mouth of a river side.From the water inlet of water filtering device water body of the injection containing calcium and magnesium ion and weight is added into the water body simultaneously
Than the caustic soda and white lime mixture for 1L:1000mg, is formed in water body and contain CaCO3With Mg (OH)2The wadding body turbid of precipitating.
Starting is connected to the suction pump of water outlet, and staying water is moved by the negative pressure that water outlet side is formed to water outlet, water body
Filtration through the plated film is extracted out from water outlet.
Embodiment 8
Select aperture for 0.001 μm of the nanofiltration ionic membrane comprising 2 empty fiber membrane components, in each empty fiber membrane component
2 surfaces plate 1 layer with a thickness of 1.5mm coating formed plated film, every layer of coating contain weight ratio be 2:1 CaCO3With
Mg(OH)2.Above-mentioned plated film is placed in the water stream channel between the water inlet of water filtering device and water outlet, and makes two plating levels
It is respectively facing inlet and outlet side.The water body containing calcium and magnesium ion and same injected from the water inlet of water filtering device
When the caustic soda and white lime mixture that weight ratio is 1L:1000mg are added into the water body, formed in water body and contain CaCO3And Mg
(OH)2The wadding body turbid of precipitating.In water inlet, elevator pump or booster pump increase intake pressure, CaCO3With Mg (OH)2Then exist
It is pumped into together with water body into water filtering device under the pressure, filtration of the water body through the plated film is extracted out from water outlet.
Embodiment 9
Please refer to Fig. 1, the present embodiment provides a kind of water filtering devices 100 comprising water inlet 110, water outlet 120, from
Sub- plated film 130 and suction pump 140, wherein the flow path from water inlet 110 to water outlet 120 is water stream channel.The ion film plating
130 for example can be the ion film plating in embodiment 1-7 any embodiment.Specifically, the ion film plating 130 is placed in water inlet
Between 110 and water outlet 120, raw water injects water filtering device 100 from water inlet 110, generates and produces after the filtering of ion film plating 130
Water is extracted out under the pumping pressure effect of suction pump 140 from water outlet 120.
Embodiment 10
The present embodiment provides a kind of water filtering device (not shown) comprising water inlet, water outlet, ion film plating, pressurization
Pump and suction pump, wherein the flow path from water inlet to water outlet is water stream channel.Ion film plating for example can be embodiment 8
In ion film plating.Specifically, the ion film plating is placed between water inlet and water outlet, raw water under the action of booster pump from into
Water filtering device is injected at the mouth of a river, generates after ion film plating filters and produces water, extracts out under the pumping pressure effect of suction pump from water outlet.
The water body containing calcium and magnesium ion after treated by the present method, water quality indicator meet national Drinking Water
Sanitary standard.Wherein with total hardness (with CaCO3Meter) 600mg/L, total alkalinity is (with CaCO3Meter) 350mg/L underground water for,
Specific water quality indicator is as shown in table 1:
1 water quality indicator of table
As can be seen from Table 1, meet country's life by the filtered production water of ion film plating in the embodiment of the present invention to drink
Water hygiene standard.
In addition, using existing filtering technique and the ion-plating technique of the embodiment of the present invention as control group and test
Group compares its power consumption during handling underground water, alkaline matter consumption and running cost, and the results are shown in Table 2:
2 power consumption of table, alkaline matter consumption and running cost
It can be seen from Table 2 that filtering raw water by ion film plating in the embodiment of the present invention, entire water treatment procedure can be made
In power consumption, the above-mentioned parameter in alkaline matter consumption and the more existing filtering technique of running cost it is lower, therefore, this method
Advantage, more save the cost are had more in operating cost.
In addition, the replacement cycle of film in the prior art is generally 2-4 months, the ion film plating in the embodiment of the present invention is more
Changing the period is 6-8 months, to extend the service life of film.Different ion plating film thickness according to embodiments of the present invention
Degree can also make transmembrane pressure reduce 5%-50% compared with the prior art, and can improve pump efficiency and to make to pump in water treatment procedure
Energy consumption reduces 5%-50% compared with the prior art.
In conclusion the forming method of the ion film plating in through the embodiment of the present invention is simple, and it is at low cost, it can be used for difference
Water process.Meet national standards for drinking water quality through the filtered production water of the ion film plating；The method for treating water power consumption
Amount, alkaline matter consumption and running cost are lower；And by the way that above-mentioned ion film plating is arranged, reduce in water treatment procedure across
Membrane pressure difference and pump energy consumption, therefore this method is economic and practical.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of ion film plating, which is characterized in that the ion film plating includes membranous system and coating, and the membranous system includes micro-filtration
Any one film in ionic membrane, ultrafiltration ionic membrane and nanofiltration ionic membrane, the coating are set to the surface of the membranous system, institute
Coating is stated mainly by CaCO3With Mg (OH)2It is made；
In the coating, CaCO3With Mg (OH)2Weight ratio be 1-3:1；
The coating with a thickness of 0.001-2mm.
2. the forming method of ion film plating as described in claim 1, which is characterized in that the membranous system is set to water filtering
Water stream channel between the water inlet and water outlet of device, Xiang Suoshu water filtering device is interior to inject the water body containing calcium and magnesium ion,
Alkaline matter is added up to the surface of the membranous system forms ion film plating from the water inlet.
3. the forming method of ion film plating according to claim 2, which is characterized in that the thickness of the ion film plating of formation
Degree is 0.06-4mm.
4. the forming method of ion film plating according to claim 3, which is characterized in that the inventory of the alkaline matter with
The ratio of the water body is 1-2000mg:1L.
5. the forming method of ion film plating according to claim 3, which is characterized in that the alkaline matter includes white lime
At least one of with caustic soda.
6. a kind of water filtering device, which is characterized in that it includes ion film plating as described in claim 1.
7. water filtering device according to claim 6, which is characterized in that the ion film plating is detachably set to the water
Water stream channel between the water inlet and water outlet of filter device.
8. water filtering device according to claim 7, which is characterized in that the coating is towards the water inlet side.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838235A (en) * | 2012-09-14 | 2012-12-26 | 北京市自来水集团有限责任公司 | Method for removing underground water hardness by combination of lime and ultrafiltration |
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102838235A (en) * | 2012-09-14 | 2012-12-26 | 北京市自来水集团有限责任公司 | Method for removing underground water hardness by combination of lime and ultrafiltration |
| CN105540939A (en) * | 2016-03-14 | 2016-05-04 | 北京沃特尔水技术股份有限公司 | Device and method for removing calcium, magnesium, fluorine and silicon elements in wastewater |
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