CN115159749B - Resident and building water supply system - Google Patents
Resident and building water supply system Download PDFInfo
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- CN115159749B CN115159749B CN202210759680.XA CN202210759680A CN115159749B CN 115159749 B CN115159749 B CN 115159749B CN 202210759680 A CN202210759680 A CN 202210759680A CN 115159749 B CN115159749 B CN 115159749B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 305
- 239000012528 membrane Substances 0.000 claims abstract description 155
- 238000000926 separation method Methods 0.000 claims abstract description 85
- 239000008399 tap water Substances 0.000 claims abstract description 20
- 235000020679 tap water Nutrition 0.000 claims abstract description 20
- 239000011259 mixed solution Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 18
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 239000002202 Polyethylene glycol Substances 0.000 claims description 12
- 239000007795 chemical reaction product Substances 0.000 claims description 12
- 229920001223 polyethylene glycol Polymers 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 11
- 238000004659 sterilization and disinfection Methods 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 9
- 239000002033 PVDF binder Substances 0.000 claims description 9
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 9
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 8
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000007983 Tris buffer Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011224 oxide ceramic Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 2
- 235000020188 drinking water Nutrition 0.000 abstract description 16
- 239000003651 drinking water Substances 0.000 abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 19
- 238000011010 flushing procedure Methods 0.000 description 15
- 230000004907 flux Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 8
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 7
- 230000002238 attenuated effect Effects 0.000 description 7
- 239000004021 humic acid Substances 0.000 description 7
- 239000008213 purified water Substances 0.000 description 7
- 235000013311 vegetables Nutrition 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229960003638 dopamine Drugs 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000001728 nano-filtration Methods 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- SRUWWOSWHXIIIA-UKPGNTDSSA-N Cyanoginosin Chemical compound N1C(=O)[C@H](CCCN=C(N)N)NC(=O)[C@@H](C)[C@H](C(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)C(=C)N(C)C(=O)CC[C@H](C(O)=O)N(C)C(=O)[C@@H](C)[C@@H]1\C=C\C(\C)=C\[C@H](C)[C@@H](O)CC1=CC=CC=C1 SRUWWOSWHXIIIA-UKPGNTDSSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229940098773 bovine serum albumin Drugs 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 108010067094 microcystin Proteins 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002699 waste material 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
- C02F1/44—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
-
- 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
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- 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
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/02—Public or like main pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
- E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
Abstract
A resident and building water supply system relates to the field of water treatment. The system comprises a pipe type separation membrane connected with tap water from a tap water pipe network, and inflow water enters from an inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank and the water tank through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines; valves are arranged on the pipeline and the household water pipeline; the water tank is positioned above the tubular separation membrane and below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank. The system of the invention has slow water outlet at the downstream of the membrane and high water quality, and can meet the drinking water requirement; the flow velocity of the upstream of the membrane is high and low, thus meeting the domestic water requirements of families, office buildings and communities. The invention is applied to the water supply field of residents and buildings.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a resident and building water supply system.
Background
With the improvement of the living standard of residents in China, the residents increasingly pay attention to the problem of drinking water safety. With the development of industry, a large amount of organic and inorganic pollutants are discharged to natural water, so that the drinking water safety problem in China is optimistic. In addition, the municipal pipe network aging phenomenon and the like cause serious degradation of the quality of tap water used by residents in China, and the excessive standards of microorganisms, turbidity, fe, mn, ca, mg and other elements restrict the national development.
At present, the water supply terminals in China lack of safety guarantee, and drinking water mainly depends on disinfectants (sodium hypochlorite and the like) added before a water works come out to inhibit bacteria, so that the risk of leakage pollution in the water delivery process is difficult to cope with, and the taste is poor. According to statistics, the daily water consumption of urban residents is about 100-150L, wherein only about 1-2L of water is directly drunk, and the rest is household miscellaneous water for flushing toilets and the like. In recent years, in order to ensure the quality of water supply, some residents purchase direct water dispensers by themselves, and some areas construct direct water drinking projects. The direct drinking water machine or the direct drinking water engineering mainly depends on a membrane separation technology, can effectively remove secondary pollution of drinking water, and is particularly effective to biological pollution such as bacteria, viruses and the like. However, these membrane filtration processes require additional pressure, increasing water supply costs, and relying on pressure separation generally pursues water recovery, resulting in excess clean water, often requiring secondary storage, and possibly secondary bacterial contamination. In addition, the concentrated water generated in the nanofiltration and reverse osmosis filtration processes is difficult to apply, and serious resource waste is caused. The membrane separation process can produce serious membrane pollution, increasing the operation and maintenance costs. Generally, the life of a PP cotton filter element of a commercial household water purifier taking reverse osmosis as a core is about 3 months, the life of an ultrafiltration filter element is 0.5-1 year, the reverse osmosis filter element is about 3 years, the running cost is high, and the living cost of residents is increased.
Natural organics are one of the most common foulants in the filtration of surface water and are complex mixtures of inorganic and organic water-soluble components with particulates. Various disinfection byproducts can be generated in the water treatment process, meanwhile, membrane pollution can be caused, humus in natural organic matters, especially Humic Acid (HA), can complex organic micro-pollutants in water, heavy metal ions and other substances to influence the migration and removal of heavy metals, and the humic acid in the water can quench oxygen in the solution under ultraviolet irradiation, so that photodegradation of microcystin can be reduced. Moreover, the addition amount of the disinfectant is increased, and the disinfection byproducts are increased.
Disclosure of Invention
In order to solve the problems, the invention provides a novel water supply mode based on a seepage separation membrane according to the characteristics of urban residents.
The invention relates to a resident and building water supply system, which comprises a water outlet of a tap water pipe network, a water tank and a water tank, wherein the water outlet of the tap water pipe network is communicated with an inlet of a pipe type separation membrane; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines; valves are arranged on the pipeline and the household water pipeline; the water tank is positioned above the tubular separation membrane and below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank.
Further, a filter membrane is arranged at the water outlet of the water tank, wherein the preparation method of the filter membrane is as follows:
1) Dissolving dopamine hydrochloride in deionized water, stirring and dissolving, adding Tris, stirring and dissolving, and adjusting the pH value to 8-8.5; wherein the mass volume ratio of dopamine hydrochloride, tris and deionized water is 1 g:0.2~0.6g:400~600mL; then adding TiO 2 Stirring the aqueous solution for reaction for 5-30 min, centrifuging, collecting precipitate, centrifuging and washing with deionized water for three times, and heating to a certain temperatureVacuum drying is carried out for 24-48 h at the temperature of 60-80 ℃ to obtain a reaction product; wherein, dopamine hydrochloride and TiO 2 The molar ratio of (2) is 1:1;
2) Mixing and stirring tetraethoxysilane and N, N-dimethylacetamide to obtain a mixed solution A; stirring and dissolving polyethylene glycol and lithium chloride to obtain a mixed solution B; stirring and mixing the mixed solution A and the mixed solution B, adding the reaction product obtained in the step 1), performing ultrasonic dispersion, adding polyvinylidene fluoride, stirring for 12-24 hours to obtain a mixed solution, and standing for deaeration; spreading the mixed solution on a clean glass plate, controlling the film thickness to be 0.2-0.4 mm, and placing the glass plate in deionized water at 15-20 ℃ for 24 hours; namely, the preparation of the titanium dioxide-containing hybrid film is completed;
wherein the mass percentage of the tetraethoxysilane in the mixed solution is 10-12%, the mass percentage of the N, N-dimethylacetamide is 60-70%, the mass percentage of the polyethylene glycol is 3-5%, the mass percentage of the lithium chloride is 2-4%, the mass percentage of the polyvinylidene fluoride is 10-15%, and the mass percentage of the reaction product is 5-10%.
Further, the mixed solution in the step 2) is scraped on a clean glass plate, and the glass plate is placed in deionized water within 10-20 seconds after the scraping is completed.
Further, the mass percentage of the tetraethoxysilane in the mixed solution is 10-12%, the mass percentage of the N, N-dimethylacetamide is 60-70%, the mass percentage of the polyethylene glycol is 3-5%, the mass percentage of the lithium chloride is 2-4%, the mass percentage of the polyvinylidene fluoride is 10-15%, and the mass percentage of the reaction product is 5-8%.
Further, the tubular separation membrane is a tubular ceramic membrane such as an alumina ceramic membrane, a silicon carbide ceramic membrane, a titanium oxide ceramic membrane, a graphene oxide modified ceramic membrane, a bionic coating modified ceramic membrane and the like, a tubular nanofiltration membrane, a negatively charged separation membrane, a two-dimensional material separation membrane or a capillary separation membrane.
Further, the diameter of the tubular separation membrane is 1 mm-1000 mm.
Further, an ultraviolet disinfection device is additionally arranged in the water tank, and the volume of the water tank is 1-100000L.
Further, the number of the household water pipelines is three, and each household water pipeline is provided with a first valve, a second valve and a third valve respectively.
Further, the first valve, the second valve and the third valve are all electronic valves and are linked with a fifth valve arranged on a pipeline communicated with the second water tank; and opening the first valve, the second valve and the third valve, and automatically closing the fifth valve.
Further, a fourth valve is arranged on the pipeline communicated with the first water tank, and a fifth valve is arranged on the pipeline communicated with the second water tank; the fourth valve and the fifth valve are electronic valves, and the fifth valve is opened to automatically close the fourth valve; a liquid level meter is arranged in the second water tank, and when the liquid level is smaller than the preset value, the fourth valve is automatically closed, and water is discharged by seepage.
Different from the traditional separation membrane pressurizing operation mode, the water supply mode of the system adopts a seepage mode to discharge water and operates in a high flow rate mode, and the system is slow in downstream water discharge of the membrane, high in water quality and capable of meeting the drinking water requirement; the flow velocity of the upstream of the membrane is high and low, thus meeting the domestic water requirements of families, office buildings and communities. The water supply method is characterized in that the water quantity of the generated drinking water is about two percent of the water quantity of living impurities, accords with the water law of residents, makes the best use of things and saves the water demand. The method has low investment cost, no pollution in the membrane separation process and the service life of the membrane is prolonged by more than three times.
The titanium dioxide-containing hybrid membrane prepared by the invention can effectively improve the membrane flux, and meanwhile, the bovine serum albumin rejection rate is high. And has remarkable effect of removing humic acid. Moreover, the strength is also improved remarkably.
Drawings
Fig. 1 is a schematic diagram of a system structure according to the present invention.
Detailed Description
For the purposes of clarity, technical solutions and advantages of embodiments of the present invention, the spirit of the present disclosure will be described in detail below, and any person skilled in the art, after having appreciated the embodiments of the present disclosure, may make changes and modifications to the techniques taught by the present disclosure without departing from the spirit and scope of the present disclosure.
The exemplary embodiments of the present invention and the descriptions thereof are intended to illustrate the present invention, but not to limit the present invention.
Example 1:
the resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a tubular ceramic membrane with the diameter of 10 mm. The pipeline is a stainless steel pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 100L (three-port family is taken as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation of the embodiment is realized by seepage water under the membrane, the water quality is high, and the drinking water requirement can be met; the upstream flow velocity of the tubular separation membrane is high, the pollution is low, and the domestic miscellaneous water requirement is met. Purified water is produced 10L per day; the domestic miscellaneous water 900L meets the rule of water consumption of residents, makes best use of things, and saves water demand. The tubular separation membrane of the embodiment has the service life of 10 years, and the permeation flux is not attenuated in the use process and is about 0. L.m -2 ·h -1 。
Example 2
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a tubular nanofiltration membrane with the diameter of 5mm. The pipeline is a copper pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 80L (three-port family is taken as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the upstream flow velocity of the tubular separation membrane is high, the pollution is low, and the domestic miscellaneous water requirement is met. 8L of purified water produced daily; the domestic miscellaneous water 750L meets the rule of water consumption of residents, makes best use of things, and saves water demand. The tubular separation membrane of the embodiment has the service life of 8 years, and the permeation flux is not attenuated in the use process and is about 0.1L m -2 ·h -1 。
Example 3
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a graphene oxide modified ceramic membrane with a diameter of 6mm. The pipeline is a stainless steel pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 80L (three-port family is taken as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the upstream flow velocity of the tubular separation membrane is high, the pollution is low, and the domestic miscellaneous water requirement is met. 12L of purified water produced daily; the living miscellaneous water 1100L accords with the rule of water for residents, makes best use of things and saves water demand. The tubular separation membrane of the embodiment has the service life of 15 years, and the permeation flux is not attenuated in the use process and is about 0. L.m -2 ·h -1 。
Example 4
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a tubular titanium dioxide ceramic membrane with the diameter of 8 mm. The pipeline is food-grade pipe materials such as stainless steel pipe, copper pipe and the like.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 120L (three-port family is taken as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the upstream flow velocity of the tubular separation membrane is high, the pollution is low, and the domestic miscellaneous water requirement is met. 14L of purified water produced daily; the domestic miscellaneous water 1200L meets the rule of water consumption of residents, makes best use of things, and saves water demand. The tubular separation membrane of the embodiment has the service life of 13 years, and the permeation flux is not attenuated in the use process and is about 0. L.m -2 ·h -1 。
Example 5
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a tubular two-dimensional material separation membrane with the diameter of 80 mm. The pipeline is a stainless steel pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 1000L (taking a high-rise as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the flow velocity of the upstream of the membrane is high, the pollution is low, and the domestic miscellaneous water requirement of each household is met. 600L of purified water produced per day; 53,000L of domestic miscellaneous water accords with the rule of resident water, makes best use of things, and saves water demand. The membranes of this embodiment have a useful life of up to 15 years,in use, the permeation flux is not attenuated, and is about 12. L.m -2 ·h -1 。
Example 6
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a capillary separation membrane, the diameter of a pipeline is 500 mm, the diameter of a capillary is 5mm, and 300 capillaries are arranged in each assembly. The pipeline is a stainless steel pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 1000L (taking a high-rise as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the flow velocity of the upstream of the membrane is high, the pollution is low, and the domestic miscellaneous water requirement of a single-deck building family is met. 800L of purified water is produced daily; the domestic miscellaneous water 70,000, L meets the rule of water consumption of residents, makes the best use of things and saves the water consumption. The membrane of the embodiment has the service life of 12 years, and the permeation flux is not attenuated in the use process and is about 23. L.m -2 ·h -1 。
Example 7
The resident and building water supply system of the embodiment adopts the following procedures:
tap water is connected into the tubular separation membrane from a tap water pipe network, and inflow water enters from the inner pipe; the outer sides of the tubular membranes are connected by pipelines; the downstream of the pipeline is respectively communicated with the water tank 1 and the water tank 2 through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines 3; valves are arranged on the pipeline and the household water pipeline 3; the water tank 1 is positioned above the tubular separation membrane, and the water tank 2 is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the water tank 2.
The tubular separation membrane is a graphene oxide modified ceramic membrane with a diameter of 6mm. The pipeline is a stainless steel pipe.
The number of the household water pipelines 3 is three, and each household water pipeline is respectively provided with a first valve 31, a second valve 32 and a third valve 33 for different purposes such as vegetable washing, toilet flushing, clothes washing and the like.
The first valve 31, the second valve 32 and the third valve 33 are all electronic valves and are all linked with a fifth valve 22 arranged on a pipeline communicated with the water tank 2; the first valve 31, the second valve 32 and the third valve 33 are opened, and the fifth valve 22 is automatically closed. The first valve 31, the second valve 32 and the third valve 33 are opened to take domestic water for flushing, so that the pollution of the separation membrane is eliminated.
The pipeline communicated with the water tank 1 is provided with a fourth valve 11, and the pipeline communicated with the water tank 2 is provided with a fifth valve 22; the fourth valve 11 and the fifth valve 22 are electronic valves, the fifth valve 22 is opened, and the fourth valve 11 is automatically closed; a liquid level meter is arranged in the water tank 2, and when the liquid level is smaller than a preset value, the fourth valve 11 is automatically closed, and water is discharged by seepage.
An ultraviolet disinfection device is additionally arranged in the water tank 2, and the volume is 80L (three-port family is taken as an example).
The fifth valve 22 is a system water outlet, and can be directly drunk after being opened and filtered by a filter membrane.
The tubular separation membrane of the embodiment is water which flows out under the membrane by seepage, has high water quality and can meet the requirement of drinking water; the flow velocity of the upstream of the membrane is high, the pollution is low, and the requirement of domestic miscellaneous water is met. 12L of purified water produced daily; the domestic miscellaneous water 900L meets the rule of water consumption of residents, makes best use of things, and saves water demand. The membrane of the embodiment has the service life of 18 years, and the permeation flux is not attenuated in the use process, which is about 16. L.m -2 ·h -1 。
Example 8
1) Dissolving 0.5g of dopamine hydrochloride in 200mL of deionized water under stirring, adding 0.3g of Tris, stirring, dissolving, and regulating the pH value to 8.5; then adding TiO 2 Stirring the aqueous solution for reaction for 30min, centrifuging, collecting precipitate, centrifugally washing with deionized water for three times, and vacuum drying at 80 ℃ for 48h to obtain a reaction product; wherein, dopamine hydrochloride and TiO 2 The molar ratio of (2) is 1:1;
2) Mixing and stirring tetraethoxysilane and N, N-dimethylacetamide to obtain a mixed solution A; stirring and dissolving polyethylene glycol and lithium chloride to obtain a mixed solution B; stirring and mixing the mixed solution A and the mixed solution B, adding the reaction product obtained in the step 1), performing ultrasonic dispersion, adding polyvinylidene fluoride, stirring for 24 hours to obtain a mixed solution, and standing for deaeration; spreading the mixed solution on a clean glass plate, controlling the film thickness to be 0.3mm, and placing the glass plate in deionized water at 20 ℃ for 24 hours; namely, the preparation of the titanium dioxide-containing hybrid film is completed;
wherein the mass percentage of the tetraethoxysilane in the mixed solution is 12%, the mass percentage of the N, N-dimethylacetamide is 60%, the mass percentage of the polyethylene glycol is 4%, and the mass percentage of the lithium chloride is as follows3% of polyvinylidene fluoride, 14% of TiO 2 The mass percentage of the dopamine reaction product was 7%.
Comparative example 1
This comparative example differs from example 8 in that: no ethyl orthosilicate and polyethylene glycol were added. Otherwise, the same as in example 8 was used.
Comparative example 2
This comparative example differs from example 8 in that: the film thickness was controlled at 0.6mm, and the reaction was stirred for 10min in step 1). Otherwise, the same as in example 8 was used.
Comparative example 3
This comparative example differs from example 8 in that: the mass percent of the tetraethoxysilane in the mixed solution is 6%, the mass percent of the N, N-dimethylacetamide is 66%, the mass percent of the polyethylene glycol is 4%, the mass percent of the lithium chloride is 3%, the mass percent of the polyvinylidene fluoride is 14%, and the TiO is the same as that of the polyethylene glycol 2 The mass percentage of the dopamine reaction product was 7%. Otherwise, the same as in example 8 was used.
Comparative example 4
This comparative example differs from example 8 in that: the mass percent of the tetraethoxysilane in the mixed solution is 12%, the mass percent of the N, N-dimethylacetamide is 63%, the mass percent of the polyethylene glycol is 4%, the mass percent of the lithium chloride is 3%, the mass percent of the polyvinylidene fluoride is 14%, and the TiO is the same as that of the polyethylene glycol 2 The mass percentage of the dopamine reaction product is 4%. Otherwise, the same as in example 8 was used.
Aiming at the titanium dioxide-containing hybrid membranes of the examples and the comparative examples, under the conditions of an operation pressure of 0.1MPa and UV illumination, the removal rate of humic acid with a pure water flux and a concentration of 0.5g/L and a concentration of 10 mg/L is examined; and the tensile strength and elastic modulus of the prepared film were examined. The results are shown in the following table.
As can be seen from the above table, this example is accomplished by adding tetraethyl orthosilicate and polyethyleneThe glycol significantly increases the strength of the membrane. Improved TiO 2 The dopamine content provides a significant improvement in the removal of humic acid, membrane flux and rejection. The control of the thickness of the membrane and the reaction time plays an important role in membrane flux, rejection rate and humic acid removal.
Claims (8)
1. A resident and building water supply system is characterized by comprising a water outlet of a tap water pipe network communicated with an inlet of a pipe type separation membrane, wherein the downstream of the pipe type separation membrane is respectively communicated with a first water tank (1) and a second water tank (2) through pipelines; the water outlets of the tubular separation membranes are respectively communicated with a plurality of household water pipelines (3); valves are arranged on the pipeline and the household water pipeline (3); the first water tank (1) is positioned above the tubular separation membrane, and the second water tank (2) is positioned below the tubular separation membrane; a filter membrane is arranged at the water outlet of the second water tank (2);
the water outlet of the water tank II (2) is provided with a filter membrane, wherein the preparation method of the filter membrane is as follows:
1) Dissolving dopamine hydrochloride in deionized water, stirring and dissolving, adding Tris, stirring and dissolving, and adjusting the pH value to 8-8.5; wherein the mass volume ratio of dopamine hydrochloride, tris and deionized water is 1 g:0.2~0.6g:400~600mL; then adding TiO 2 Stirring the aqueous solution for reaction for 5-30 min, centrifuging, collecting precipitate, centrifugally washing with deionized water for three times, and vacuum drying at 60-80 ℃ for 24-48 h to obtain a reaction product; wherein, dopamine hydrochloride and TiO 2 The molar ratio of (2) is 1:1;
2) Mixing and stirring tetraethoxysilane and N, N-dimethylacetamide to obtain a mixed solution A; stirring and dissolving polyethylene glycol and lithium chloride to obtain a mixed solution B; stirring and mixing the mixed solution A and the mixed solution B, adding the reaction product obtained in the step 1), performing ultrasonic dispersion, adding polyvinylidene fluoride, stirring for 12-24 hours to obtain a mixed solution, and standing for deaeration; spreading the mixed solution on a clean glass plate, controlling the film thickness to be 0.2-0.4 mm, and placing the glass plate in deionized water at 15-20 ℃ for 24 hours; namely, the preparation of the titanium dioxide-containing hybrid film is completed;
wherein the mass percentage of the tetraethoxysilane in the mixed solution is 10-12%, the mass percentage of the N, N-dimethylacetamide is 60-70%, the mass percentage of the polyethylene glycol is 3-5%, the mass percentage of the lithium chloride is 2-4%, the mass percentage of the polyvinylidene fluoride is 10-15%, and the mass percentage of the reaction product is 5-8%.
2. The water supply system for residents and buildings according to claim 1, wherein the mixed solution in the step 2) is coated on a clean glass plate by scraping, and the glass plate is placed in deionized water within 10-20 seconds after the completion of the scraping.
3. A residential and construction water supply system as claimed in claim 1, characterized in that said tubular separation membrane is an alumina ceramic membrane, a silicon carbide ceramic membrane, a titanium oxide ceramic membrane or a graphene oxide modified ceramic membrane.
4. The resident and building water supply system according to claim 1, wherein the diameter of the pipe-type separation membrane is 1mm to 1000mm.
5. The resident and building water supply system according to claim 1, wherein an ultraviolet disinfection device is additionally arranged in the second water tank (2), and the volume of the second water tank (2) is 1-100000L.
6. A residential and construction water supply system according to claim 1, characterized in that said domestic water pipes (3) are three, each provided with a first valve (31), a second valve (32) and a third valve (33).
7. The resident and building water supply system according to claim 6, wherein the first valve (31), the second valve (32) and the third valve (33) are all electronic valves, and are all linked with a fifth valve (22) arranged on a pipeline communicated with the second water tank (2); the first valve (31), the second valve (32) and the third valve (33) are opened, and the fifth valve (22) is automatically closed.
8. A resident and building water supply system according to claim 1, characterized in that a fourth valve (11) is arranged on the pipe communicating with the first tank (1) and a fifth valve (22) is arranged on the pipe communicating with the second tank (2); the fourth valve (11) and the fifth valve (22) are electronic valves, the fifth valve (22) is opened, and the fourth valve (11) is automatically closed; a liquid level meter is arranged in the water tank II (2), and when the liquid level is smaller than the preset value, the fourth valve (11) is automatically closed, and water is discharged by seepage.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429700U (en) * | 2013-06-27 | 2014-02-12 | 泰安圣源环保科技有限公司 | Direct drinking water building integrated energy saving system |
| CN105457504A (en) * | 2015-12-31 | 2016-04-06 | 杭州市特种设备检测研究院 | Novel titanium dioxide nano-particle/polymer hybrid membrane and preparation method thereof |
| CN107715700A (en) * | 2017-11-24 | 2018-02-23 | 中国科学院烟台海岸带研究所 | A kind of high-salt wastewater processing corrosion resistant anti-soil film and its preparation method and application |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429700U (en) * | 2013-06-27 | 2014-02-12 | 泰安圣源环保科技有限公司 | Direct drinking water building integrated energy saving system |
| CN105457504A (en) * | 2015-12-31 | 2016-04-06 | 杭州市特种设备检测研究院 | Novel titanium dioxide nano-particle/polymer hybrid membrane and preparation method thereof |
| CN107715700A (en) * | 2017-11-24 | 2018-02-23 | 中国科学院烟台海岸带研究所 | A kind of high-salt wastewater processing corrosion resistant anti-soil film and its preparation method and application |
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