CN102295369B - Device and method for removing hardness in drinking water - Google Patents
Device and method for removing hardness in drinking water Download PDFInfo
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- CN102295369B CN102295369B CN 201110234535 CN201110234535A CN102295369B CN 102295369 B CN102295369 B CN 102295369B CN 201110234535 CN201110234535 CN 201110234535 CN 201110234535 A CN201110234535 A CN 201110234535A CN 102295369 B CN102295369 B CN 102295369B
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Abstract
The invention discloses a device for removing the hardness in drinking water, which comprises a hydraulic chemical proportioner, a quartz-sand filtering column, a wood activated-carbon filtering column and an ultrafiltration membrane, wherein the quartz-sand filtering column, the wood activated-carbon filtering column and the ultrafiltration membrane are sequentially connected in series with a water outlet of the hydraulic chemical proportioner. The invention also discloses a method for removing the hardness in the drinking water, wherein a ferric-trichloride flocculating agent is added into the drinking water by utilizing the hydraulic chemical proportioner, the water pressure of tap water is used as power without electricity utilization, calcium ions in the water can be directly adsorbed on the surface of an oxide through the flocculating action of ferric trichloride, and a ligand can also be formed by combining functional groups of adsorbed organic-substance molecules and organic substances; and the flocculated water is then further adsorbed and filtered through quartz sand and activated carbon, the adsorption for the calcium ions is enhanced, and then colloidal substances which are generated through the filtration of the ultrafiltration membrane are discharged form the water to obtain the clear low-hardness drinking water. The removing rate of the hardness reaches more than 80 percent, and the device is simple and convenient to operate, has low cost and is applicable to the processing of home-terminal drinking water.
Description
Technical field
The present invention relates to the drinking water deep purification field, be specifically related to a kind of device and method for removing hardness in drinking water.
Background technology
Hardness is an important indicator of water quality detection.Due to reasons such as geographical conditions and environmental pollutions, a lot of local water hardness are all very high, contain more solubility calcium, magnesium compound.Standard GB/T 5749-2006 is defined as and can not surpasses 450 mg/litre drinking water hardness.
If much higher hard, drinking has certain impact afterwards on HUMAN HEALTH and daily life.Hardness is being commonly referred to hard water more than 8, after hard water is boiled, can occurs on surface that foam floats over water or be deposited in kettle or the water tumbler bottom, and white casse makes us sense organ uncomfortable, drinks and can cause functions of intestines and stomach disorderly; The wall of kitchen, toilet, ceramic tile, kitchen tools, base plate, bathtub, toilet, gargle wash pool etc. because hard water can fouling knot stain; Hard water is used for washing also can produce harm, the waste washing composition, and colored clothes fugitive color, white clothes can dim jaundice, harden after clothing dries that it is not soft to harden, and the wearing and tearing of washing machine are accelerated; Not smooth with hard water bathing skin, hair is dark and gloomy; Hard water can form incrustation scale in boiler, not only reduce heat transfer efficiency and the energy utilization efficiency of boiler, and power consumption is increased, waste fuel, and also the ditch that generates is easy to blocking pipe, causes potential safety hazard.
Water softening can be used distillation method, but cost is higher, is unsuitable for family and uses; The equipment such as RO film, electrodialysis are complicated, use inconvenience, take electricity charge water, and cost is high; Ion exchange method is used trouble, and cost is higher, needs the frequent regeneration exchange resin, and in the water outlet of preparation, sodium ion is more, easily causes cerebro-vascular diseases, cardiovascular diseases, hypertension etc.
Summary of the invention
The problem that the present invention solves is to provide a kind of device and method for removing hardness in drinking water, can effectively remove the hardness in tap water, and easy and simple to handle, cost is low, be suitable for home terminal and use.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of device for removing hardness in drinking water comprises waterpower chemical proportioner and the quartzy sand filtration post of connecting successively with described waterpower chemical proportioner water outlet, wood activated charcoal filter post and ultra-filtration membrane.
As preferably, the aperture of described quartzy sand filtration post is 0.1 μ m～0.5 μ m.
As preferably, the aperture of described wood activated charcoal filter post is 0.1 μ m～0.5 μ m.
A kind of method of removing hardness in drinking water comprises:
The waterpower chemical proportioner is directly installed on tap water pipe line, and adding iron trichloride in the tap water flocculates, and the tap water of then flocculation treatment being crossed filters by quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane successively.
As preferably, the concentration that adds of described iron trichloride is 5mg/L～10mg/L.
As preferably, the aperture of described quartzy sand filtration post is 0.1 μ m～0.5 μ m.
As preferably, the aperture of described wood activated charcoal filter post is 0.1 μ m～0.5 μ m.
The method that the present invention removes hardness in drinking water is to utilize the waterpower chemical proportioner to drop into the iron trichloride flocculation agent in tap water, the waterpower chemical proportioner can be directly installed on water pipe, utilize the hydraulic pressure of running water pipe as power, need not electricity consumption, throwing out by iron trichloride, calcium ion in water can directly be adsorbed on oxide surface, also can be combined with organism by the functional group of the organic molecule that has been adsorbed and form ligand; Water after flocculation is again by quartz sand and the further adsorption filtration of gac, the surface of quartz sand, gac all is electronegativity, also strengthened the absorption to the calcium ion of positively charged, in flocculation, under the adsorption of iron trichloride, quartz sand and gac, the colloid thing that generates through ultrafiltration membrance filter again, the tap water of the soft that water outlet obtains clarifying.The method reaches more than 80% the clearance of tap water hardness, and easy and simple to handle, cost is low, is applicable to the processing of home terminal tap water.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just as further illustrating the features and advantages of the present invention, rather than limiting to the claimed invention.
Device for removing hardness in drinking water provided by the invention comprises waterpower chemical proportioner and the quartzy sand filtration post of connecting successively with described waterpower chemical proportioner water outlet, wood activated charcoal filter post and ultra-filtration membrane.Waterpower chemical proportioner and quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane can be split type, also can make integral type and put into a shell, make device compacter, save the space.
The waterpower chemical proportioner can be directly installed on tap water pipe line, need not electric power, and with the hydraulic pressure of the tap water power as work.Under the driving with the current of pressure, the doser operation, can the iron trichloride flocculation agent directly be sucked and be injected into water from container ratio as required, iron trichloride fully mixes automatically with water in doser, and can keep constant accurate dosing dosage, no matter how flow and the pressure of water change, and the dosage of the iron trichloride of injection and the flow of tap water are proportional all the time, ratio can be regulated, and is easy and simple to handle.
Waterpower chemical proportioner water outlet connect successively quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane, tap water can flow through under the driving of hydraulic pressure successively, and the calcium ion in water is adsorbed the generation flocs unit, at last by removing by filter.The aperture of quartzy sand filtration post is preferably 0.1 μ m～0.5 μ m, and the aperture of wood activated charcoal filter post is 0.1 μ m～0.5 μ m.By device provided by the invention, the hardness in tap water can well be removed, and tap water obtains deep purifying.
The method of removal hardness in drinking water provided by the invention is simply effective, easy to use, is suitable for home terminal and uses.Specifically comprise the waterpower chemical proportioner is directly installed on tap water pipe line, rely on water flow pressure to add iron trichloride in tap water, utilize absorption, the flocculating effect of iron trichloride to remove water hardness from the beginning.Iron trichloride dissolves in that hydrolysis generates ferric hydroxide precipitate after water, and extremely strong cohesive force is arranged, and the surface is electronegativity, can produce adsorption to the calcium ion of positively charged.Calcium ion also can be combined with organism by the functional group of the organic molecule that has been adsorbed and be formed ligand, by volume sweep, adhesion, the net effect of catching generate flocs unit.In the present invention, the concentration that adds of iron trichloride is preferably 5mg/L～10mg/L.
Then tap water flows through quartz sand filter post and wood activated charcoal filter post under the driving of hydraulic pressure, and the surface of quartz sand and gac all is electronegativity, can strengthen the absorption to the calcium ion of positively charged, and can some flocs units of elimination.Last tap water is by ultra-filtration membrane, and the colloid thing through ultra-filtration membrane blocks, generates in trap water goes out the water hardness low, limpid, transparent, and the hardness clearance is more than 80%.
Embodiment 1:
DOSATRON waterpower chemical proportioner is arranged on the pipeline of tap water, tap water is fully mixed in doser with iron trichloride, the concentration that adds of iron trichloride is 8mg/L.Mixed tap water flows through quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane successively by the water outlet of waterpower chemical proportioner.The mean pore size of quartzy sand filtration post is 0.4 μ m, and the mean pore size of wood activated charcoal filter post is 0.1 μ m, and ultra-filtration membrane is the inner pressed ultra-filtration membrane.
Embodiment 2:
DOSATRON waterpower chemical proportioner is arranged on the pipeline of tap water, tap water is fully mixed in doser with iron trichloride, the concentration that adds of iron trichloride is 5mg/L.Mixed tap water flows through quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane successively by the water outlet of waterpower chemical proportioner.The mean pore size of quartzy sand filtration post is 0.2 μ m, and the mean pore size of wood activated charcoal filter post is 0.2 μ m, and ultra-filtration membrane is the inner pressed ultra-filtration membrane.
Embodiment 3:
DOSATRON waterpower chemical proportioner is arranged on the pipeline of tap water, tap water is fully mixed in doser with iron trichloride, the concentration that adds of iron trichloride is 10mg/L.Mixed tap water flows through quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane successively by the water outlet of waterpower chemical proportioner.The mean pore size of quartzy sand filtration post is 0.1 μ m, and the mean pore size of wood activated charcoal filter post is 0.3 μ m, and ultra-filtration membrane is the inner pressed ultra-filtration membrane.
Test with the high hardness water of different areas of Beijing respectively, to the tap water sampling of former tap water with process doser and the water purifier that filter membrane or active carbon filter core are housed, detect water hardness, the results are shown in
Table 1:
Hardness before and after table 1 is processed in tap water, unit: mg/L
Through after practical application, can see, apparatus and method provided by the invention can be good at removing the hardness in tap water, and easy and simple to handle, are fit to the processing of home terminal tap water.
Above a kind of device and method for removing hardness in drinking water provided by the present invention is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (2)
1. device of be used for removing hardness in drinking water, it is characterized in that, comprise the waterpower chemical proportioner that is directly installed on tap water pipe line and the quartzy sand filtration post of connecting successively with described waterpower chemical proportioner water outlet, wood activated charcoal filter post and ultra-filtration membrane;
The aperture of described quartzy sand filtration post is 0.1 μ m～0.5 μ m, and the aperture of described wood activated charcoal filter post is 0.1 μ m～0.5 μ m.
2. a method of removing hardness in drinking water, is characterized in that, comprising:
The waterpower chemical proportioner is directly installed on tap water pipe line, and adding iron trichloride in the tap water flocculates, and the tap water of then flocculation treatment being crossed is successively by quartzy sand filtration post, wood activated charcoal filter post and ultra-filtration membrane;
The concentration that adds of described iron trichloride is 5mg/L～10mg/L, and the aperture of described quartzy sand filtration post is 0.1 μ m～0.5 μ m, and the aperture of described wood activated charcoal filter post is 0.1 μ m～0.5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110234535 CN102295369B (en) | 2011-08-16 | 2011-08-16 | Device and method for removing hardness in drinking water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110234535 CN102295369B (en) | 2011-08-16 | 2011-08-16 | Device and method for removing hardness in drinking water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102295369A CN102295369A (en) | 2011-12-28 |
| CN102295369B true CN102295369B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110234535 Expired - Fee Related CN102295369B (en) | 2011-08-16 | 2011-08-16 | Device and method for removing hardness in drinking water |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110180493B (en) * | 2019-04-17 | 2022-04-19 | 中节能（合肥）可再生能源有限公司 | Active filter material for removing calcium ions, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010221206A (en) * | 2009-03-23 | 2010-10-07 | Uerushii:Kk | Carried type water-purifying kit |
| CN101514060B (en) * | 2009-03-31 | 2011-10-26 | 上海穆特环保科技有限公司 | Device for treating emergency drinking water |
| CN201665595U (en) * | 2010-04-21 | 2010-12-08 | 湖南同一水处理科技有限公司 | Pretreatment complete set of equipment used for nanofiltration water preparation |
| CN201850183U (en) * | 2010-10-11 | 2011-06-01 | 浦坚 | Water desalination processing device |
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