CN104230014B - A kind of soft water composite filtering material and preparation method thereof - Google Patents
A kind of soft water composite filtering material and preparation method thereof Download PDFInfo
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- CN104230014B CN104230014B CN201410460483.3A CN201410460483A CN104230014B CN 104230014 B CN104230014 B CN 104230014B CN 201410460483 A CN201410460483 A CN 201410460483A CN 104230014 B CN104230014 B CN 104230014B
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- filtering material
- composite filtering
- soft water
- exchange resin
- ion exchange
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000001914 filtration Methods 0.000 title claims abstract description 31
- 239000008234 soft water Substances 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 28
- 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 claims abstract description 23
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 23
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 23
- 239000004575 stone Substances 0.000 claims abstract description 17
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006004 Quartz sand Substances 0.000 claims abstract description 10
- 229920005646 polycarboxylate Polymers 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 15
- 230000002401 inhibitory effect Effects 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000003352 sequestering agent Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 10
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004021 humic acid Substances 0.000 claims description 5
- 229920005610 lignin Polymers 0.000 claims description 5
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 159000000000 sodium salts Chemical class 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000009736 wetting Methods 0.000 claims description 5
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 5
- 229960001763 zinc sulfate Drugs 0.000 claims description 5
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 5
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 3
- DEFVIWRASFVYLL-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl)tetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)CCOCCOCCN(CC(O)=O)CC(O)=O DEFVIWRASFVYLL-UHFFFAOYSA-N 0.000 claims description 3
- 239000013522 chelant Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 239000008233 hard water Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 229910001425 magnesium ion Inorganic materials 0.000 description 4
- 239000003643 water by type Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 208000015924 Lithiasis Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 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
- 210000003734 kidney Anatomy 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of soft water composite filtering material and preparation method thereof, for the water quality characteristics of hard water, choose activated carbon granule, medical stone, quartz sand, calcite, the material component such as silicon carbide substitute traditional ion exchange resin, be aided with the synergy of chemical treatment medicament again, joint coordination process is carried out in the process softening process of hard water, there is efficient demineralized water effect, and preparation method is easy, the filtering material particle prepared not easily mould growth, safety performance is high, industrialization degree is high, effectively reduce the cost of process hard water, remarkable in economical benefits.
Description
Technical field
The present invention relates to a kind of water treatment filter material and preparation thereof, especially relate to a kind of soft water composite filtering material and preparation method thereof.
Background technology
Quality problem is a large center of gravity on social people's lives basis, at present, water quality condition that is domestic and foreign department region-by-region is harder, water hardness be wherein contain positively charged ion calcium, magnesium ion total concn, impurity in existing drinking filter intelligently filters water is if floating matter, throw out, scale or peculiar smell are as chlorinated lime taste, mud fishy smell, iron rust taste etc., and absorption can not be filtered for a large amount of calcium, magnesium ion, and the total concn of calcium, magnesium ion is too high, is harmful to the health of human body; Soft water is compared with tap water, and have extremely significantly mouthfeel and feel, soft water oxygen level is high, and hardness is low, effectively can prevent lithiasis, alleviates the heart, kidney burden, good for health.
A lot of water softener is calcium, the magnesium ion removed by ion exchange resin in water at present, reduces water hardness.On the one hand have price higher, be easy to just to adsorb saturated on the other hand, the casing of water softener is generally directly exposed at present in addition, so usually can fluctuate because of outside temperature, shell forms moisture or water of condensation, easily causes mould to grow.
How to seek a kind of softening water performance good, level of safety is higher, with low cost, for the composite filtering material of hard water softening, is a problem being worth research.
Summary of the invention
Goal of the invention: to have effect bad in order to solve in prior art existing common softening water filtrate, and expensive problem, the present invention proposes a kind of soft water composite filtering material efficient, with low cost and preparation method thereof.
Technical scheme: to achieve these objectives; the present invention takes following technical scheme: a kind of soft water composite filtering material, comprises following component according to weighing scale: 15-20 part granulated active carbon, 20-30 part ion exchange resin, 5-10 part medical stone, 10-15 part quartz sand, 5-10 part calcite, 5-10 part silicon carbide, 5-10 part polycarboxylate, 10-15 part Sunmorl N 60S, 5-10 part corrosion inhibiting and descaling agent, 10-15 part sequestrant, 15-20 part deionized water.
Further, described ion exchange resin is weak acid ion exchange resin.
Further, described medical stone, calcite particle diameter are 1-5 μm.
Further, described polycarboxylate is wetting ability polycarboxylate.
Further, described corrosion inhibiting and descaling agent is that zinc sulfate, molybdate, Sodium salts humic acids and lignin quality are than the mixture for 3:1:2:2.
Further, described sequestrant is aminocarboxylic acids.
Further, described aminocarboxylic acid quasi-chelate compound is specially one or more in EDTA, DTPA, EGTA, NTA.
The preparation method of above-mentioned a kind of soft water composite filtering material, comprises the steps:
(1) medical stone of required weight, calcite high-speed grinder are ground to the particle that particle diameter is 1-5 μm, mix stand-by with granulated active carbon, quartz sand, silicon carbide and ion exchange resin;
(2) 60-70 DEG C is heated to while stirring after the polycarboxylate of required weight, Sunmorl N 60S, corrosion inhibiting and descaling agent, sequestrant and deionized water being mixed, add the raw mixture that step (1) is stand-by while hot, continue to stir, be warming up to 80 DEG C, Heat preservation to compound water ratio is 15%-20%, granulation;
(3) above-mentioned wet granular is directly put into shock heating expansion in hot environment, expansion temperature 500-700 DEG C, the time is 5-10min;
(4) particle after expansion molding was cooled to room temperature after 800-950 DEG C of roasting 4-8 minute;
(5) required soft water composite filtering material can be obtained after above-mentioned particle being carried out sterilizing-drying.
Beneficial effect: a kind of soft water composite filtering material provided by the invention and preparation method thereof, for the water quality characteristics of hard water, choose activated carbon granule, medical stone, quartz sand, calcite, the material component such as silicon carbide substitute traditional ion exchange resin, be aided with the synergy of chemical treatment medicament again, joint coordination process is carried out in the process softening process of hard water, there is efficient demineralized water effect, and preparation method is easy, the filtering material particle prepared not easily mould growth, safety performance is high, industrialization degree is high, effectively reduce the cost of process hard water, remarkable in economical benefits.
Embodiment
Embodiment 1:
A kind of soft water composite filtering material, comprises following component according to weighing scale: 15 parts of granulated active carbons, 20 parts of ion exchange resin, 5 parts of medical stones, 10 parts of quartz sand, 5 parts of calcites, 5 parts of silicon carbide, 5-10 part polycarboxylate, 10 parts of Sunmorl N 60Ss, 5 parts of corrosion inhibiting and descaling agents, 10 parts of sequestrants, 15 parts of deionized waters;
Wherein, above-mentioned ion exchange resin is weak acid ion exchange resin, and medical stone, calcite particle diameter are 1 μm; Polycarboxylate is wetting ability polycarboxylate; Corrosion inhibiting and descaling agent is that zinc sulfate, molybdate, Sodium salts humic acids and lignin quality are than the mixture for 3:1:2:2; Sequestrant is aminocarboxylic acids, is specially EDTA.
The preparation method of above-mentioned a kind of soft water composite filtering material, comprises the steps:
(1) medical stone of required weight, calcite high-speed grinder are ground to the particle that particle diameter is 1 μm, mix stand-by with granulated active carbon, quartz sand, silicon carbide and ion exchange resin;
(2) 60 DEG C are heated to while stirring after the polycarboxylate of required weight, Sunmorl N 60S, corrosion inhibiting and descaling agent, sequestrant and deionized water being mixed, add the raw mixture that step (1) is stand-by while hot, continue to stir, be warming up to 80 DEG C, Heat preservation to compound water ratio is 15%, granulation;
(3) above-mentioned wet granular is directly put into shock heating expansion in hot environment, expansion temperature 500 DEG C, the time is 10min;
(4) particle after expansion molding is cooled to room temperature through 800 DEG C of roastings after 8 minutes;
(5) required soft water composite filtering material can be obtained after above-mentioned particle being carried out sterilizing-drying.
Embodiment 2:
A kind of soft water composite filtering material, comprises following component according to weighing scale: 20 parts of granulated active carbons, 30 parts of ion exchange resin, 10 parts of medical stones, 15 parts of quartz sands, 10 parts of calcites, 10 parts of silicon carbide, 10 parts of polycarboxylates, 15 parts of Sunmorl N 60Ss, 10 parts of corrosion inhibiting and descaling agents, 15 parts of sequestrants, 20 parts of deionized waters;
Wherein, above-mentioned ion exchange resin is weak acid ion exchange resin, and medical stone, calcite particle diameter are 5 μm; Polycarboxylate is wetting ability polycarboxylate; Corrosion inhibiting and descaling agent is that zinc sulfate, molybdate, Sodium salts humic acids and lignin quality are than the mixture for 3:1:2:2; Sequestrant is aminocarboxylic acids, is specially DTPA.
The preparation method of above-mentioned a kind of soft water composite filtering material, comprises the steps:
(1) medical stone of required weight, calcite high-speed grinder are ground to the particle that particle diameter is 5 μm, mix stand-by with granulated active carbon, quartz sand, silicon carbide and ion exchange resin;
(2) 70 DEG C are heated to while stirring after the polycarboxylate of required weight, Sunmorl N 60S, corrosion inhibiting and descaling agent, sequestrant and deionized water being mixed, add the raw mixture that step (1) is stand-by while hot, continue to stir, be warming up to 80 DEG C, Heat preservation to compound water ratio is 20%, granulation;
(3) above-mentioned wet granular is directly put into shock heating expansion in hot environment, expansion temperature 700 DEG C, the time is 5min;
(4) particle after expansion molding is cooled to room temperature through 950 DEG C of roastings after 4 minutes;
(5) required soft water composite filtering material can be obtained after above-mentioned particle being carried out sterilizing-drying.
Embodiment 3:
A kind of soft water composite filtering material, comprises following component according to weighing scale: 18 parts of granulated active carbons, 25 parts of ion exchange resin, 8 parts of medical stones, 13 parts of quartz sands, 8 parts of calcites, 8 parts of silicon carbide, 7 parts of polycarboxylates, 13 parts of Sunmorl N 60Ss, 8 parts of corrosion inhibiting and descaling agents, 13 parts of sequestrants, 17 parts of deionized waters;
Wherein, above-mentioned ion exchange resin is weak acid ion exchange resin, and medical stone, calcite particle diameter are 3 μm; Polycarboxylate is wetting ability polycarboxylate; Corrosion inhibiting and descaling agent is that zinc sulfate, molybdate, Sodium salts humic acids and lignin quality are than the mixture for 3:1:2:2; Sequestrant is aminocarboxylic acids, is specially EGTA.
The preparation method of above-mentioned a kind of soft water composite filtering material, comprises the steps:
(1) medical stone of required weight, calcite high-speed grinder are ground to the particle that particle diameter is 3 μm, mix stand-by with granulated active carbon, quartz sand, silicon carbide and ion exchange resin;
(2) 65 DEG C are heated to while stirring after the polycarboxylate of required weight, Sunmorl N 60S, corrosion inhibiting and descaling agent, sequestrant and deionized water being mixed, add the raw mixture that step (1) is stand-by while hot, continue to stir, be warming up to 80 DEG C, Heat preservation to compound water ratio is 18%, granulation;
(3) above-mentioned wet granular is directly put into shock heating expansion in hot environment, expansion temperature 600 DEG C, the time is 8min;
(4) particle after expansion molding is cooled to room temperature through 875 DEG C of roastings after 6 minutes;
(5) required soft water composite filtering material can be obtained after above-mentioned particle being carried out sterilizing-drying.
The soft water composite filtering material using above-described embodiment 1-3 to prepare carries out pilot plant test process to hardness mark-on water, and the total hardness (in CaCO3) of wherein intaking is 1000mg/L; Determining total hardness of water is after treatment: 300-400mg/L, without Detection of pathogenic bacteria, meets drinking water sanitary standard.
Can draw from the above results, a kind of soft water composite filtering material of the present invention has hard water and processes bating effect preferably, water quality indices after process all reaches state-set standard, and the preparation method of a kind of soft water of the present invention composite filtering material is easy, the filtering material particle prepared not easily mould growth, safety performance is high, and industrialization degree is high, effectively reduce the cost of process hard water, remarkable in economical benefits.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (5)
1. a soft water composite filtering material, is characterized in that comprising following component according to weighing scale: 15-20 part granulated active carbon, 20-30 part ion exchange resin, 5-10 part medical stone, 10-15 part quartz sand, 5-10 part calcite, 5-10 part silicon carbide, 5-10 part polycarboxylate, 10-15 part Sunmorl N 60S, 5-10 part corrosion inhibiting and descaling agent, 10-15 part sequestrant, 15-20 part deionized water; Described corrosion inhibiting and descaling agent is that zinc sulfate, molybdate, Sodium salts humic acids and lignin quality are than the mixture for 3:1:2:2; Described sequestrant is aminocarboxylic acids; Described aminocarboxylic acid quasi-chelate compound be specially in EDTA, DTPA, EGTA, NTA one or more.
2. soft water composite filtering material according to claim 1, is characterized in that: described ion exchange resin is weak acid ion exchange resin.
3. soft water composite filtering material according to claim 1, is characterized in that: described medical stone, calcite particle diameter are 1-5 μm.
4. soft water composite filtering material according to claim 1, is characterized in that: described polycarboxylate is wetting ability polycarboxylate.
5. a preparation method for soft water composite filtering material according to claim 1, is characterized in that comprising the steps:
(1) medical stone of required weight, calcite high-speed grinder are ground to the particle that particle diameter is 1-5 μm, mix stand-by with granulated active carbon, quartz sand, silicon carbide and ion exchange resin;
(2) 60-70 DEG C is heated to while stirring after the polycarboxylate of required weight, Sunmorl N 60S, corrosion inhibiting and descaling agent, sequestrant and deionized water being mixed, add the raw mixture that step (1) is stand-by while hot, continue to stir, be warming up to 80 DEG C, Heat preservation to compound water ratio is 15%-20%, granulation;
(3) above-mentioned wet granular is directly put into shock heating expansion in hot environment, expansion temperature 500-700 DEG C, the time is 5-10min;
(4) particle after expansion molding was cooled to room temperature after 800-950 DEG C of roasting 4-8 minute;
(5) required soft water composite filtering material can be obtained after above-mentioned particle being carried out sterilizing-drying.
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| CN201410460483.3A CN104230014B (en) | 2014-09-11 | 2014-09-11 | A kind of soft water composite filtering material and preparation method thereof |
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| CN104230014B true CN104230014B (en) | 2016-02-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105948162A (en) * | 2016-06-23 | 2016-09-21 | 苏州腾纳环保科技有限公司 | Antimicrobial corrosion-resistant water-purification composite filter material |
| CN105964052A (en) * | 2016-06-24 | 2016-09-28 | 马鞍山市顺达环保设备有限公司 | Filtering material used for mine dust collector and preparation method of filtering material |
| CN108793440A (en) * | 2017-05-04 | 2018-11-13 | 中国石油化工股份有限公司 | A kind of recirculated cooling water low temperature scale inhibitor composition and its application |
| CN108423842A (en) * | 2018-03-27 | 2018-08-21 | 厦门德露滋环保科技有限公司 | A kind of softening softener water regenerative agent and preparation method thereof |
| CN111620969B (en) * | 2020-05-22 | 2023-01-10 | 浙江维泰橡胶有限公司 | Method for carrying out emulsion polymerization by using tap water instead of deionized water |
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| CN201567247U (en) * | 2009-09-17 | 2010-09-01 | 刘严蓬 | Natural zeolite purified water treatment device |
| JP2010194436A (en) * | 2009-02-24 | 2010-09-09 | Nippon Steel Engineering Co Ltd | Wastewater treatment method |
| CN202237425U (en) * | 2011-10-13 | 2012-05-30 | 高远新 | Drinking water softener with zeolum filter element |
| CN103100244A (en) * | 2013-02-22 | 2013-05-15 | 刘伟 | Multi-medium filter |
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2014
- 2014-09-11 CN CN201410460483.3A patent/CN104230014B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010194436A (en) * | 2009-02-24 | 2010-09-09 | Nippon Steel Engineering Co Ltd | Wastewater treatment method |
| CN201567247U (en) * | 2009-09-17 | 2010-09-01 | 刘严蓬 | Natural zeolite purified water treatment device |
| CN202237425U (en) * | 2011-10-13 | 2012-05-30 | 高远新 | Drinking water softener with zeolum filter element |
| CN103100244A (en) * | 2013-02-22 | 2013-05-15 | 刘伟 | Multi-medium filter |
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Effective date of registration: 20240314 Address after: 2226, Building 1, 2, and 3, Dongfang Furong Garden, No. 582 Yuanda 1st Road, Hehuayuan Street, Furong District, Changsha City, Hunan Province, 410000 Patentee after: Changsha Yingrui Intellectual Property Operation Co.,Ltd. Country or region after: China Address before: 212400 Zhenjiang Huayu environmental protection equipment manufacturing Co., Ltd., building 01, Fuda Pioneer Park, Jurong Development Zone, Zhenjiang City, Jiangsu Province Patentee before: ZHENJIANG HUAYU ENVIRONMENTAL PROTECTION EQUIPMENT MANUFACTURING Co.,Ltd. Country or region before: China |