CN107459158B - Sterilization and chlorine removal environment-friendly water treatment for drinking water device - Google Patents
Sterilization and chlorine removal environment-friendly water treatment for drinking water device Download PDFInfo
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- CN107459158B CN107459158B CN201710802169.2A CN201710802169A CN107459158B CN 107459158 B CN107459158 B CN 107459158B CN 201710802169 A CN201710802169 A CN 201710802169A CN 107459158 B CN107459158 B CN 107459158B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 24
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims description 24
- 239000000460 chlorine Substances 0.000 title claims description 24
- 229910052801 chlorine Inorganic materials 0.000 title claims description 24
- 238000004659 sterilization and disinfection Methods 0.000 title abstract description 12
- 235000020188 drinking water Nutrition 0.000 title abstract description 9
- 239000003651 drinking water Substances 0.000 title abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000008399 tap water Substances 0.000 claims abstract description 34
- 235000020679 tap water Nutrition 0.000 claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 24
- 230000035622 drinking Effects 0.000 claims abstract description 21
- 239000011032 tourmaline Substances 0.000 claims abstract description 20
- 229940070527 tourmaline Drugs 0.000 claims abstract description 20
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 13
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 83
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 58
- 238000003756 stirring Methods 0.000 claims description 50
- 229920001661 Chitosan Polymers 0.000 claims description 41
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 41
- 229930003268 Vitamin C Natural products 0.000 claims description 41
- 235000019154 vitamin C Nutrition 0.000 claims description 41
- 239000011718 vitamin C Substances 0.000 claims description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 37
- 230000000844 anti-bacterial effect Effects 0.000 claims description 36
- 239000011259 mixed solution Substances 0.000 claims description 30
- 229910052799 carbon Inorganic materials 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 12
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 11
- JDLKFOPOAOFWQN-UHFFFAOYSA-N allicin Chemical compound C=CCSS(=O)CC=C JDLKFOPOAOFWQN-UHFFFAOYSA-N 0.000 claims description 11
- YBHILYKTIRIUTE-UHFFFAOYSA-N berberine Chemical compound C1=C2CC[N+]3=CC4=C(OC)C(OC)=CC=C4C=C3C2=CC2=C1OCO2 YBHILYKTIRIUTE-UHFFFAOYSA-N 0.000 claims description 11
- 235000010413 sodium alginate Nutrition 0.000 claims description 11
- 229940005550 sodium alginate Drugs 0.000 claims description 11
- 239000000661 sodium alginate Substances 0.000 claims description 11
- JDLKFOPOAOFWQN-VIFPVBQESA-N Allicin Natural products C=CCS[S@](=O)CC=C JDLKFOPOAOFWQN-VIFPVBQESA-N 0.000 claims description 10
- 235000010081 allicin Nutrition 0.000 claims description 10
- 229940093265 berberine Drugs 0.000 claims description 10
- QISXPYZVZJBNDM-UHFFFAOYSA-N berberine Natural products COc1ccc2C=C3N(Cc2c1OC)C=Cc4cc5OCOc5cc34 QISXPYZVZJBNDM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 229920000058 polyacrylate Polymers 0.000 claims description 10
- 229940093429 polyethylene glycol 6000 Drugs 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 2
- 230000000382 dechlorinating effect Effects 0.000 claims 4
- 239000012467 final product Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 230000001580 bacterial effect Effects 0.000 abstract description 6
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- 238000006298 dechlorination reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000004071 biological effect Effects 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000035790 physiological processes and functions Effects 0.000 abstract description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 13
- 229960000907 methylthioninium chloride Drugs 0.000 description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 238000002835 absorbance Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention discloses a sterilization and dechlorination environment-friendly water treatment method for a drinking device, which comprises the following steps: (1) Tap water is treated by activated carbon (2) and filtered by an ultrafiltration membrane. The water drinking device of the invention uses the sterilization and dechlorination environment-friendly water treatment, which can solve the problems of inconvenient drinking of tap water and harm to human body caused by secondary pollution of tap water; the activated carbon has the adsorption effect of heavy metals and chloride ions and the water quality decoloring and clarifying effect, and can effectively adsorb larger various substances and impurities in the liquid; the tourmaline treatment also increases the biological activity of water, and has the characteristics of improving physiological functions of organisms and the like; the invention can effectively inhibit and kill bacteria for a long time, remove heavy metals and chloride ions, prevent the drinking water device from generating secondary pollution caused by bacterial growth, and prolong the service life.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to sterilization and dechlorination environment-friendly water treatment for a drinking device.
Background
Tap water refers to water which is produced by a tap water treatment plant after purification and disinfection and meets corresponding standards and is used for life and production of people. The domestic water is mainly pumped by a water intake pump station of a water plant to draw river and lake and underground water, and the surface water is treated by the water plant according to the relevant sanitary standards of national domestic Drinking Water, and finally is conveyed to each user through a water distribution pump station.
Tap water is closely related to life of people, and the quality of the tap water is closely related to health of people. The water quality standard of China has a certain gap compared with the international standard at present. At present, the water supply safety is faced with double pressures of increasingly serious water source pollution and gradually improved water quality standard of the water supply, and the advanced treatment technology of the water supply is also required to be higher.
Tap water plants usually use liquid chlorine or bleaching powder to sterilize tap water, so that the tap water contains a certain amount of free chlorine. According to the national standard of drinking water, the content of free chlorine in the end pipeline of a tap water user is not lower than 0.05mg/L, however, the residual chlorine can act with organic matters in water to generate chlorine-containing organic matters harmful to human bodies, such as chloroform, dichloroethylene, carbon tetrachloride and the like. Therefore, the chlorine removal operation is necessary to the tap water to eliminate the hazard caused by residual chlorine.
In the tap water preparation process, an aged water delivery pipe network and an unmanned cleaning water tank inevitably cause secondary pollution of tap water, so that the tap water fed into a user's home cannot be directly drunk, and normally people only boiled the boiled water to directly drink, but boiled water is troublesome, only plays a role in disinfection and sterilization, and cannot eliminate heavy metals and various harmful substances in the tap water. However, the pollution of water resources is increasingly serious at present, especially heavy metal pollution and organic matter pollution, and the tap water which is not treated after long-term drinking can cause harm to the body.
Therefore, the water safety is further ensured, and a drinking water treatment method which is convenient and practical and can be directly drunk is urgently needed for the development of the physical health and society of people.
Disclosure of Invention
The invention aims to solve the technical problem of providing the sterilizing and chlorine removing environment-friendly water treatment for the drinking water device, and the drinking water treatment method can solve the problems of inconvenient drinking of tap water and harm to human bodies caused by secondary pollution of tap water.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with active carbon;
(2) And (5) filtering by an ultrafiltration membrane.
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.002-0.02 mu m.
The particle size of the tourmaline is 10-100 meshes.
Tourmaline is added into tap water in the tourmaline treatment process, and antibacterial activated carbon is added into tap water in the antibacterial activated carbon treatment process.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 2-5 parts by weight of chitosan into 45-55 parts by weight of acetic acid aqueous solution with the mass fraction of 0.4-0.8%, and uniformly stirring and mixing to obtain chitosan solution; adding 1-3 parts by weight of sodium alginate, 0.5-1.5 parts by weight of berberine, 1-2 parts by weight of allicin, 1-3 parts by weight of dispersing agent and 5-15 parts by weight of water-based polyacrylate emulsion, and stirring and mixing uniformly to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: (0.1-0.3) stirring and mixing, and then drying at 125-135 ℃ for 25-35 min.
Preferably, the preparation method of the antibacterial active carbon comprises the following steps: adding 2-5 parts by weight of vitamin C modified chitosan into 45-55 parts by weight of water, and uniformly stirring and mixing to obtain a chitosan solution; adding 1-3 parts by weight of sodium alginate, 0.5-1.5 parts by weight of berberine, 1-2 parts by weight of allicin, 1-3 parts by weight of dispersing agent and 5-15 parts by weight of water-based polyacrylate emulsion, and stirring and mixing uniformly to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: (0.1-0.3) stirring and mixing, and then drying at 125-135 ℃ for 25-35 min.
The dispersing agent is polyethylene glycol 6000 and/or polyvinyl alcohol. In one embodiment of the invention, the dispersant consists of 75-85wt% polyethylene glycol 6000 and 15-25wt% polyvinyl alcohol.
The particle size of the activated carbon is 10-100 meshes.
The preparation method of the vitamin C modified chitosan comprises the following steps: 5-7g of chitosan and 55-65mL of isopropanol are put into a three-neck flask with the capacity of 200-300mL, nitrogen is introduced and stirred for 50-70min; adding 20-30mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 22-28%, and stirring for 25-35min; adding 24-28mL of mixed solution of isopropyl alcohol and 10-12mL of water, continuously stirring for 1.5-2.5h, centrifuging under the protection of nitrogen, and recovering precipitate; washing 1 time with a mixed solution of 150-170mL of isopropyl alcohol and 35-45mL of water under the protection of nitrogen, adding 190-210mL of isopropyl alcohol for washing 1 time, and vacuum drying at 35-45 ℃ for 20-28h to obtain the vitamin C modified chitosan.
The rotational speed of the centrifugation is 4000-6000r/min, and the time is 10-20min.
Compared with the prior art, the water drinking device of the invention uses the sterilization and dechlorination environment-friendly water treatment, which can solve the problems of inconvenient tap water drinking and harm to human body caused by 'secondary pollution' of tap water; the activated carbon has the adsorption effect of heavy metals and chloride ions and the water quality decoloring and clarifying effect, and can effectively adsorb larger various substances and impurities in the liquid; the tourmaline treatment also increases the biological activity of water, and has the characteristics of improving physiological functions of organisms and the like; the invention can effectively inhibit and kill bacteria for a long time, remove heavy metals and chloride ions, prevent the drinking water device from generating secondary pollution caused by bacterial growth, and prolong the service life.
Detailed Description
Determination of methylene blue adsorption value:
firstly, preparing methylene blue solutions with different concentrations by using deionized water, and measuring the absorbance of methylene blue samples with different concentrations by using a 724 microcomputer type visible spectrophotometer (Shanghai optical instrument factory) at a wavelength of 665nm and using the deionized water as a reference and using a quartz cuvette with an optical path of 10 mm. The concentration and the absorbance are plotted to obtain a concentration correction curve, wherein the curve relation is C=0.01055A, and R=0.997, wherein C is the concentration of methylene blue, and g/L; a is absorbance; r is a correlation coefficient.
10mg of the antibacterial activated carbon sample was placed in a test tube containing 12mL of methylene blue solution having a concentration of 329mg/L, and then the test tube was placed in a thermostatic water bath, and left at a constant temperature of 30℃for 5 hours to allow it to reach adsorption equilibrium. After adsorption equilibrium, the solution was filtered to remove the activated carbon fiber to obtain a filtrate, and then the absorbance of the filtrate was measured, and the equilibrium concentration of methylene blue was calculated from the concentration calibration curve of methylene blue solution. The equilibrium adsorption of methylene blue on activated carbon fiber can be calculated from the following formula: qe= (C 0 -C e ) X V/m, wherein Qe is equilibrium adsorption amount, C 0 For the initial concentration of methylene blue solution, C e Is the equilibrium concentration of methylene blue solution, V is the volume of methylene blue solution, and m is the mass of activated carbon fiber.
Antibacterial property measurement:
inoculating low-temperature stored strain of Staphylococcus aureus (CMCC 26003) onto nutrient broth, culturing at 37deg.C for 24 hr, and diluting with sterile physiological saline to cell concentration of 10 4 CFU/mL of initial bacterial liquid. Taking 10mg of antibacterial active carbon in a sterilization conical flask, sucking 1.0ml of initial bacterial liquid by using a sterilization scale suction pipe, slowly and uniformly dripping the initial bacterial liquid on the antibacterial active carbon, and sealing a bottle mouth. After 1h, 50ml of sterilized normal saline is added into the bottle, the bottle is vigorously vibrated for 2min, and a proper amount of solution is taken to be used for measuring the total bacterial count by a gradient dilution method; and a blank control of antibacterial active carbon without a bacteriostat is made. The experimental results are the average of three experiments. Antibacterial ratio= (1-total bacteria of experimental group/total bacteria of control group) ×100%.
Chlorine removal performance measurement:
10mg of the antibacterial activated carbon sample was placed in a test tube containing 12mL of tap water with a free chlorine content of 0.6mg/L, and then the test tube was placed in a thermostatic water bath, and kept at a constant temperature of 30℃for 5 hours to allow it to reach adsorption equilibrium. And then detecting the free chlorine content in tap water after the antibacterial active carbon treatment according to GB/T5750.11-2006.
Specifically, in the examples:
vitamin C, CAS number: 50-81-7.
The chitosan is medicinal food-grade chitosan provided by Shanxi French natural products Co.
Sodium alginate is food grade sodium alginate available from Shanxi French Natural products Co.
Berberine, CAS number: 2086-83-1.
Allicin, CAS number: 539-86-6.
Polyethylene glycol 6000 is food grade polyethylene glycol 6000 provided by Tianjin food source biotechnology limited company.
The polyvinyl alcohol is a polyvinyl alcohol supplied by Japanese synthetic chemistry under the trade name EG-05 (0588).
The aqueous polyacrylate emulsion is referred to in the application number: prepared as shown in example 1 of the chinese patent of 201310579303.9.
The activated carbon is 16 mesh coconut activated carbon provided by water purification materials limited company in Zhengzhou.
Isopropyl alcohol, CAS number: 67-63-0.
The nitrogen gas was provided by Guangdong Huat gas Co., ltd. With a volume content of 99.999%.
Example 1
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride.
The particle size of the tourmaline is 16 meshes.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 3 parts by weight of chitosan into 50 parts by weight of acetic acid aqueous solution with the mass fraction of 0.6%, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 2 parts by weight of polyethylene glycol 6000 and 10 parts by weight of aqueous polyacrylate emulsion, stirring at a rotating speed of 150 rpm for 20min, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: and (2) stirring and mixing at the stirring speed of 600 rpm for 20min, and then drying at the temperature of 130 ℃ for 30min to obtain the antibacterial active carbon.
Example 2
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride.
The particle size of the tourmaline is 16 meshes.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 3 parts by weight of vitamin C modified chitosan into 50 parts by weight of deionized water, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 2 parts by weight of polyethylene glycol 6000 and 10 parts by weight of aqueous polyacrylate emulsion, stirring at a rotating speed of 150 rpm for 20min, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: and (2) stirring and mixing at the stirring speed of 600 rpm for 20min, and then drying at the temperature of 130 ℃ for 30min to obtain the antibacterial active carbon.
The preparation method of the vitamin C modified chitosan comprises the following steps: 6g of chitosan and 60mL of isopropanol are put into a three-neck flask with the capacity of 250mL, nitrogen is introduced and stirring is carried out for 60min at the rotating speed of 150 rpm; adding 25mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 26%, and stirring for 30min at the rotating speed of 150 rpm; adding 26mL of mixed solution of isopropanol and 11mL of deionized water, continuously stirring for 2h at the rotating speed of 150 r/min, centrifuging for 15min at the rotating speed of 5000r/min under the protection of nitrogen, and recovering the precipitate; and (3) washing the precipitate for 1 time by adopting a mixed solution of 160mL of isopropanol and 40mL of deionized water under the protection of nitrogen, adding 200mL of isopropanol for washing 1 time, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ and the vacuum degree of 130Pa to obtain the vitamin C modified chitosan.
Comparative example 1
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride.
The particle size of the tourmaline is 16 meshes.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 2.5 parts by weight of chitosan and 0.5 part by weight of vitamin C into 50 parts by weight of acetic acid aqueous solution with the mass fraction of 0.6%, and stirring for 20min at the rotating speed of 150 rpm to obtain a chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 2 parts by weight of polyethylene glycol 6000 and 10 parts by weight of aqueous polyacrylate emulsion, stirring at a rotating speed of 150 rpm for 20min, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: and (2) stirring and mixing at the stirring speed of 600 rpm for 20min, and then drying at the temperature of 130 ℃ for 30min to obtain the antibacterial active carbon.
Example 3
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride.
The particle size of the tourmaline is 16 meshes.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 3 parts by weight of vitamin C modified chitosan into 50 parts by weight of deionized water, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 2 parts by weight of polyvinyl alcohol and 10 parts by weight of water-based polyacrylate emulsion, stirring at a rotating speed of 150 rpm for 20min, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: and (2) stirring and mixing at the stirring speed of 600 rpm for 20min, and then drying at the temperature of 130 ℃ for 30min to obtain the antibacterial active carbon.
The preparation method of the vitamin C modified chitosan comprises the following steps: 6g of chitosan and 60mL of isopropanol are put into a three-neck flask with the capacity of 250mL, nitrogen is introduced and stirring is carried out for 60min at the rotating speed of 150 rpm; adding 25mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 26%, and stirring for 30min at the rotating speed of 150 rpm; adding 26mL of mixed solution of isopropanol and 11mL of deionized water, continuously stirring for 2h at the rotating speed of 150 r/min, centrifuging for 15min at the rotating speed of 5000r/min under the protection of nitrogen, and recovering the precipitate; and (3) washing the precipitate for 1 time by adopting a mixed solution of 160mL of isopropanol and 40mL of deionized water under the protection of nitrogen, adding 200mL of isopropanol for washing 1 time, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ and the vacuum degree of 130Pa to obtain the vitamin C modified chitosan.
Example 4
The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) And (5) filtering by an ultrafiltration membrane.
The aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride.
The particle size of the tourmaline is 16 meshes.
The preparation method of the antibacterial activated carbon comprises the following steps: adding 3 parts by weight of vitamin C modified chitosan into 50 parts by weight of deionized water, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 1.6 parts by weight of polyethylene glycol 6000, 0.4 part by weight of polyvinyl alcohol and 10 parts by weight of water-based polyacrylate emulsion, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: and (2) stirring and mixing at the stirring speed of 600 rpm for 20min, and then drying at the temperature of 130 ℃ for 30min to obtain the antibacterial active carbon. Antibacterial activated carbon performance test results: the free chlorine content is 0.02mg/L, the sterilization rate is 99.6%, and the methylene blue adsorption value is 441mg/g.
The preparation method of the vitamin C modified chitosan comprises the following steps: 6g of chitosan and 60mL of isopropanol are put into a three-neck flask with the capacity of 250mL, nitrogen is introduced and stirring is carried out for 60min at the rotating speed of 150 rpm; adding 25mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 26%, and stirring for 30min at the rotating speed of 150 rpm; adding 26mL of mixed solution of isopropanol and 11mL of deionized water, continuously stirring for 2h at the rotating speed of 150 r/min, centrifuging for 15min at the rotating speed of 5000r/min under the protection of nitrogen, and recovering the precipitate; and (3) washing the precipitate for 1 time by adopting a mixed solution of 160mL of isopropanol and 40mL of deionized water under the protection of nitrogen, adding 200mL of isopropanol for washing 1 time, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ and the vacuum degree of 130Pa to obtain the vitamin C modified chitosan.
Test example 1
The antibacterial activated carbon prepared in examples 1 to 3 and comparative example 1 was subjected to methylene blue adsorption value, free chlorine removal, and antibacterial property test. The specific results are shown in Table 1.
Table 1: test results table
In the embodiment 2, the vitamin C is adopted to modify chitosan, so that the performance is greatly improved; the reason for this is probably that the vitamin C modified chitosan improves the water solubility of chitosan, and the acid property of vitamin C itself has the chlorine removal effect.
Claims (6)
1. The sterilizing and chlorine removing environment-friendly water treatment for the water drinking device is characterized by comprising the following steps of:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) Filtering by an ultrafiltration membrane;
the preparation method of the antibacterial activated carbon comprises the following steps: adding 2-5 parts by weight of vitamin C modified chitosan into 45-55 parts by weight of water, and uniformly stirring and mixing to obtain a chitosan solution; adding 1-3 parts by weight of sodium alginate, 0.5-1.5 parts by weight of berberine, 1-2 parts by weight of allicin, 1-3 parts by weight of dispersing agent and 5-15 parts by weight of water-based polyacrylate emulsion, and stirring and mixing uniformly to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1: (0.1-0.3) stirring and mixing, and then drying at 125-135 ℃ for 25-35min to obtain the final product;
the preparation method of the vitamin C modified chitosan comprises the following steps: 5-7g of chitosan and 55-65mL of isopropanol are put into a three-neck flask with the capacity of 200-300mL, nitrogen is introduced and stirred for 50-70min; adding 20-30mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 22-28%, and stirring for 25-35min; adding 24-28mL of mixed solution of isopropyl alcohol and 10-12mL of water, continuously stirring for 1.5-2.5h, centrifuging under the protection of nitrogen, and recovering precipitate; washing 1 time with a mixed solution of 150-170mL of isopropyl alcohol and 35-45mL of water under the protection of nitrogen, adding 190-210mL of isopropyl alcohol for washing 1 time, and vacuum drying at 35-45 ℃ for 20-28 hours to obtain vitamin C modified chitosan;
the dispersing agent consists of 75-85wt% of polyethylene glycol 6000 and 15-25wt% of polyvinyl alcohol.
2. The sterilizing and dechlorinating environment-friendly water treatment method for a drinking device as claimed in claim 1, wherein the method comprises the following steps: the aperture of the ultrafiltration membrane is 0.002-0.02 mu m.
3. The sterilizing and dechlorinating environment-friendly water treatment method for a drinking device as claimed in claim 1, wherein the method comprises the following steps: the particle size of the tourmaline is 10-100 meshes.
4. The sterilizing and dechlorinating environment-friendly water treatment method for a drinking device as claimed in claim 1, wherein the method comprises the following steps: the particle size of the activated carbon is 10-100 meshes.
5. The sterilizing and dechlorinating environment-friendly water treatment method for a drinking device as claimed in claim 1, wherein the method comprises the following steps: the rotational speed of the centrifugation is 4000-6000r/min, and the time is 10-20min.
6. The sterilizing and chlorine removing environment friendly water treatment for water drinking device includes the following steps:
(1) Treating tap water with antibacterial active carbon;
(2) Tourmaline treatment;
(3) Filtering by an ultrafiltration membrane;
the aperture of the ultrafiltration membrane is 0.01 mu m, and the ultrafiltration membrane is made of polyvinylidene fluoride;
the particle size of the tourmaline is 16 meshes;
the preparation method of the antibacterial activated carbon comprises the following steps: adding 3 parts by weight of vitamin C modified chitosan into 50 parts by weight of deionized water, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a chitosan solution; adding 2 parts by weight of sodium alginate, 1 part by weight of berberine, 1.5 parts by weight of allicin, 1.6 parts by weight of polyethylene glycol 6000, 0.4 part by weight of polyvinyl alcohol and 10 parts by weight of water-based polyacrylate emulsion, stirring for 20min at the rotating speed of 150 rpm, and uniformly mixing to obtain a mixed solution; the mass ratio of the active carbon to the mixed solution is 1:0.2 stirring and mixing, wherein the stirring speed is 600 rpm, the stirring time is 20min, and then drying at 130 ℃ for 30min to obtain the antibacterial active carbon;
the preparation method of the vitamin C modified chitosan comprises the following steps: 6g of chitosan and 60mL of isopropanol are put into a three-neck flask with the capacity of 250mL, nitrogen is introduced and stirring is carried out for 60min at the rotating speed of 150 rpm; adding 25mL of vitamin C aqueous solution, wherein the mass fraction of vitamin C in the vitamin C aqueous solution is 26%, and stirring for 30min at the rotating speed of 150 rpm; adding 26mL of mixed solution of isopropanol and 11mL of deionized water, continuously stirring for 2h at the rotating speed of 150 r/min, centrifuging for 15min at the rotating speed of 5000r/min under the protection of nitrogen, and recovering the precipitate; and (3) washing the precipitate for 1 time by adopting a mixed solution of 160mL of isopropanol and 40mL of deionized water under the protection of nitrogen, adding 200mL of isopropanol for washing 1 time, and carrying out vacuum drying for 24 hours at the temperature of 40 ℃ and the vacuum degree of 130Pa to obtain the vitamin C modified chitosan.
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