CN106045156A - Nanofiltration membrane central water purification treatment system and treatment method - Google Patents
Nanofiltration membrane central water purification treatment system and treatment method Download PDFInfo
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- CN106045156A CN106045156A CN201610557122.XA CN201610557122A CN106045156A CN 106045156 A CN106045156 A CN 106045156A CN 201610557122 A CN201610557122 A CN 201610557122A CN 106045156 A CN106045156 A CN 106045156A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 215
- 239000012528 membrane Substances 0.000 title claims abstract description 108
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 55
- 238000000746 purification Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 18
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 230000002070 germicidal effect Effects 0.000 claims abstract description 8
- 239000006004 Quartz sand Substances 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 19
- 238000004062 sedimentation Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 13
- 229920002647 polyamide Polymers 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 12
- 239000010453 quartz Substances 0.000 claims description 12
- 239000004952 Polyamide Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 9
- 239000002346 layers by function Substances 0.000 claims description 9
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 7
- 238000003672 processing method Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000012695 Interfacial polymerization Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 125000000864 peroxy group Chemical group O(O*)* 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000009287 sand filtration Methods 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000007943 implant Substances 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052801 chlorine Inorganic materials 0.000 abstract description 7
- 239000000460 chlorine Substances 0.000 abstract description 7
- 230000004907 flux Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 4
- 238000001223 reverse osmosis Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- QCVGEOXPDFCNHA-UHFFFAOYSA-N 5,5-dimethyl-2,4-dioxo-1,3-oxazolidine-3-carboxamide Chemical compound CC1(C)OC(=O)N(C(N)=O)C1=O QCVGEOXPDFCNHA-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 150000001263 acyl chlorides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000014103 egg white Nutrition 0.000 description 1
- 210000000969 egg white Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009736 wetting Methods 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
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a nanofiltration membrane central water purification treatment system. A raw water tank is connected with a water inlet of a quartz sand filter through a raw water pump, a water outlet of the quartz sand filter is connected with an ozone contact tower, and an ozone inlet in the bottom of the ozone contact tower is connected with an ozone generator through a high-pressure fan; a water outlet of the ozone contact tower is connected with a water inlet of an activated carbon filter through a carbon filter pump, a water outlet of the activated carbon filter is connected with an intermediate water tank, a water outlet of the intermediate water tank is connected with a precision filter through a pressure pump, water is delivered to a nanofiltration membrane filter by a water outlet of the precision filter through a high-pressure pump, and a water outlet of the nanofiltration membrane filter is provided with an ultraviolet germicidal lamp, and is connected with a finished water storage tank through a water outlet pipeline of the ultraviolet germicidal lamp; two branch pipes are arranged on a concentrated water outlet of a nanofiltration membrane, the first branch pipe is connected with a concentrated water recycling device, and the second branch pipe is connected with a water inlet of the raw water pump. According to the system, the chlorine resistance and oxidization resistance of a composite nanofiltration membrane are improved by 5 times or more; the water flux of the composite nanofiltration membrane is increased by 20 to 50 percent; the pollution resistance of the composite nanofiltration membrane is improved by two times or more; the water productivity of the central water purification treatment system is improved to be 70 percent or higher.
Description
Technical field
The present invention relates to a kind of water treatment system and processing method thereof, be concretely that a kind of NF membrane Central water purification processes
System and processing method, belong to water-treatment technology field.
Background technology
NF membrane is also called low pressure reverse osmosis or loose reverse osmosis membrane, owing to the density of its surface layer compares reverse osmosis membrane
Density low, it is hereby achieved that the water flux more much higher than reverse osmosis membrane, ion above to bivalence and molecular weight are more than simultaneously
The organic molecule of 200 has sufficiently high interception capacity, and its range of application is more and more wider.But, although polyamide-based nanofiltration is multiple
Close film and there is desalting performance and the water permeability energy of excellence, but in the presence of oxidative components, film properties drastically declines.Nearly 30
Nian Lai, Duo Jia research institution and transnational enterprise have carried out substantial amounts of work to improve its oxidation resistent susceptibility, but there is no prominent so far
Broken property progress and corresponding product come out.As American SS T company uses in AUS research report No.201370 for 2002
Ring penta 4 acyl chlorides substitutes general pyromellitic trimethylsilyl chloride monomer, and gained composite membrane chlorine resistance is improved, but due to other performance
Can not get ensureing, there is no product and come out；Dow Chemical US5876602 and epoch irrigate time at US2008/0203013 special
Profit uses rear oxidation process the chlorine-resistant oxidation resistent susceptibility improving film, but it has impact on the desalting performance of film, thus there is no product
Come out.Therefore must first pass through strict pretreatment in NF membrane application process at present, the use that this considerably increases film becomes
This.Another major defect of NF membrane is that its anti-pollution ability is the most weak, and a lot of potential pollutants in former water, such as colloid, egg
White matter, the hard water ions etc. of microorganism and easily fouling all easily causes the dirt of film and blocks up, makes film properties decay rapidly, and this will
Seeking extra preprocessing process to remove these components as far as possible, this also increases the use cost of film.
In water treatment applications, cost ratio shared by the energy expenditure of the use cost of composite membrane and unit product water is higher,
Therefore since the industrialization eighties in last century so far, the use cost of composite membrane reduces and reduces and uses pressure or increase water and pass through
Rate be always industry make great efforts direction, therefore, resistance to oxidation, anti-pollution high-flux nanofiltration membrane be developed into industry emphasis.
Summary of the invention
The technical problem to be solved is, the shortcoming overcoming prior art, it is provided that a kind of NF membrane Central water purification
Processing system and processing method, apparatus of the present invention clear principle is reliable, cheap, implements simple, it is achieved clean to central authorities
The on-line monitoring of the former water of wetting system, automatically controls dense Water Sproading reprocessing, has ecological, environmental protective meaning.
In order to solve above technical problem, the present invention provides a kind of NF membrane Central water purification processing system, including raw water box,
Quartz filter, ozone contact tower, active carbon filter, nano-filtration membrane filter and water out phase dense with nano-filtration membrane filter
Dense Water Sproading even utilizes device, and described raw water box is connected with the water inlet of quartz filter by raw water pump, described quartz
Sand filter outlet is connected with described ozone contact tower, and the ozone inlet of described ozone contact tower bottom passes through high pressure positive blower
It is connected with ozonator；The outlet of described ozone contact tower is connected with the water inlet of active carbon filter through carbon filter pump, institute
The outlet stating active carbon filter is connected with intermediate water tank, and the outlet of described intermediate water tank passes through force (forcing) pump and fine filter phase
Even, the outlet of fine filter feeds the water into described nano-filtration membrane filter, the outlet of described nano-filtration membrane filter by high-pressure pump
Ultraviolet germicidal is installed, is connected with product water storage tank by the outlet pipeline of ultraviolet germicidal；The dense water of described NF membrane goes out
The mouth of a river is provided with two arms, and the first arm utilizes device to be connected with dense Water Sproading, the second arm and the water inlet of described raw water pump
It is connected；
Being provided with composite nanometer filtering film in described nano-filtration membrane filter, described composite nanometer filtering film includes supporting layer and the end stacked together
Film layer, described basal membrane layer surface introduces peroxy or epoxy-based functional reactive group, and described support layer surface introduces to use leads to
Interfacial polymerization techniques apply composite polyamide ultrathin functional layer, by the macromolecule of described composite polyamide ultrathin functional layer
Chain and the functional response group generation bonding action on basal membrane layer surface, it is achieved described supporting layer and basal membrane layer crosslinking combine.
The present invention limits technical scheme further: aforesaid NF membrane Central water purification processing system, described dense Water Sproading
Device is utilized to include regulating retort, sedimentation tank, more medium filter, the second nano-filtration membrane filter and initial filter water tank, described
Regulation retort is provided with flocculant and PH regulator dosing mouth, and the outlet of described regulation retort passes through water-delivery pump and precipitation
The water inlet in pond is connected, and the bottom of described sedimentation tank is provided with sediment discharge mouth, is provided with outlet through pipe in the middle part of described sedimentation tank
Road is connected with more medium filter, and the outlet of described more medium filter feeds the water into described second by the second high-pressure pump and receives
Membrane filter, the outlet of described second nano-filtration membrane filter is connected with initial filter water tank, described second nano-filtration membrane filter
Dense water outlet leads to described regulation retort through pipeline, and the described initial filter cleaned pump of water tank bottom outlet leads to described second
Nano-filtration membrane filter, in order to clean the second nano-filtration membrane filter.
Aforesaid NF membrane Central water purification processing system, fills PP cotton filter core in described fine filter, described PP cotton filter core
Aperture is 5-20 micron；Described active carbon filter inner stuffing is active carbon loading silver filter element or hoary hair's sintering activity charcoal filter element.
Aforesaid NF membrane Central water purification processing system, the dense water water outlet of described NF membrane is provided with detection probe, logical
Cross the break-make that control circuit judges two arms of described dense water water outlet.
Aforesaid NF membrane Central water purification processing system, described quartz filter is provided with anti-overflow loop arm；Institute
State nano-filtration membrane filter to be arranged in parallel by two NF membrane and constitute.
A kind of processing method of NF membrane Central water purification processing system, concrete grammar is as follows:
Open raw water pump, the water in raw water box is squeezed into quartz filter, removes the larger diameter solid impurity in former water, warp
Water after quartz sand filtration delivers to ozone contact tower, and in ozone contact tower, water and ozone counter current contacting, remove Organic substance in water,
Improving the absorbability of consequent activities charcoal, residual gas is emptied by ozone contact top of tower；
Water after ozone contact tower processes falls the micro quantity organic pollutant in water through active carbon filter, absorption, and stores
Keep in intermediate water tank；
Water in intermediate water tank is delivered to fine filter by force (forcing) pump again, filters out the dust in water by the PP cotton filter core in fine filter
And other coarse grained pollutant；Feeding the water into nano-filtration membrane filter by high-pressure pump to filter, the pure water prepared is again by purple
The antibacterial wherein remained killed by outer sterilizer lamp, finally sends into product water storage tank, and the dense water of generation selects according to testing result
Flowing to, the water return the most purified process of raw water pump that concentration is relatively low, the dense water that concentration is high is sent into dense Water Sproading and is utilized device；
Dense water enters dense Water Sproading and utilizes device to be first adjusted retort, and addition flocculant and PH regulator pass through after being sufficiently stirred for
Water-delivery pump sends into sedimentation tank precipitation, and water, after more medium filter filters, is sent by the supernatant of sedimentation tank by the second high-pressure pump
Entering the second nano-filtration membrane filter, the pure water of generation sends into initial filter water tank, and the dense water of generation sends into regulation retort, initial filter water bottom
The cleaned pump of outlet in portion leads to the second nano-filtration membrane filter, in order to clean the second nano-filtration membrane filter.
The composite nanometer filtering film of the present invention introduces a kind of novel containing functional groups additive, be added to basal membrane layer
Casting solution in, polysulfones basal membrane layer surface is processed through suitable physical chemistry so that it is surface introduces the merit such as peroxy, epoxy radicals
Energy property reactive group, then uses general interfacial polymerization techniques composite polyamide ultrathin functional layer to support layer surface so that
The reactive merit on amide groups in polyamide molecule and the end group such as amido and carboxyl of polyamide macromolecular chain and counterdie surface
Energy group generation bonding action, thus realize polyamide desalination functional layer and the interface-cross-linked structure of supporting layer, make Interface composites strong
Degree is greatly increased, and improves the chlorine-resistant oxidative resistance of composite nanometer filtering film；Simultaneously on the basis of existing Technology, anti-at composite membrane-forming
Answer the additive preferably going out uniqueness in system, control and optimize polyamide functional layer thickness, density and surface hydrophilicity and surface
Roughness etc., improve the water flux of existing Nano filtering composite membrane；Use specific manufacture technique, reduce film surface roughness, improve film
Anti-fouling performance；Use high-performance NF membrane core processing technique, drinking water quality security risk end-of-pipe control technology with
On the basis of applied research, high-efficiency and energy-saving type dual water supplying system key technology and equipment industrialization, PLC is used to control, it is achieved
The on-line monitoring of water former to central water purifier, automatically controls concentrate recirculation reprocessing, is carried by the producing water ratio of central water purifying system
Up to more than 70%.
The invention has the beneficial effects as follows:
The present invention, compared with existing water treatment system, has the following characteristics that (1) improves the chlorine-resistant oxidative resistance 5 of composite nanometer filtering film
More than Bei；(2) water flux of composite nanometer filtering film is improved 20-50%；(3) anti-fouling performance of composite nanometer filtering film is improved 2 times with
On；(4) producing water ratio of central water purifying system is improved to more than 70%.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of apparatus of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings
Embodiment 1
The present embodiment provides a kind of NF membrane Central water purification processing system, and structure is as it is shown in figure 1, include raw water box 1, quartz sand mistake
Filter 2, ozone contact tower 3, active carbon filter 4, nano-filtration membrane filter 5 and water out dense with nano-filtration membrane filter are connected
Dense Water Sproading utilizes device, fills PP cotton filter core in fine filter, and the aperture of PP cotton filter core is 5-20 micron；In active carbon filter
Implant is active carbon loading silver filter element, and quartz filter is provided with anti-overflow loop arm；Raw water box passes through raw water pump 6 and stone
The water inlet of sand filter 2 is connected, and quartz filter 2 outlet is connected with ozone contact tower 3, ozone contact tower bottom
Ozone inlet is connected with ozonator 8 by high pressure positive blower 7；The outlet of ozone contact tower 3 is through carbon filter pump 9 and activated carbon
The water inlet of filter 4 is connected, and the outlet of active carbon filter 4 is connected with intermediate water tank 10, the outlet of intermediate water tank 10
Being connected with fine filter 12 by force (forcing) pump 11, the outlet of fine filter 12 feeds the water into nano-filtration membrane filter 5 by high-pressure pump 13,
Nano-filtration membrane filter is arranged in parallel by two NF membrane and constitutes；The outlet of nano-filtration membrane filter installs ultraviolet germicidal 14, logical
The outlet pipeline crossing ultraviolet germicidal 14 is connected with product water storage tank 15；The dense water outlet of NF membrane is provided with two arms,
First arm utilizes device to be connected with dense Water Sproading, and the second arm is connected with the water inlet of raw water pump, the dense water water outlet of NF membrane
It is provided with detection probe at Kou, is judged the break-make of two arms of dense water water outlet by control circuit；
Being provided with composite nanometer filtering film in nano-filtration membrane filter, composite nanometer filtering film includes supporting layer and the basal membrane layer stacked together, the end
Film surface introduces peroxy or epoxy-based functional reactive group, and support layer surface introduces and uses general interfacial polymerization techniques
The composite polyamide ultrathin functional layer applied, by the function of the macromolecular chain of composite polyamide ultrathin functional layer Yu basal membrane layer surface
Property reactive group generation bonding action, it is achieved supporting layer and basal membrane layer crosslinking combine.
The dense Water Sproading of the present embodiment utilize device include regulating retort 16, sedimentation tank 17, more medium filter 18, the
Two nano-filtration membrane filters 19 and initial filter water tank 20, regulation retort 16 is provided with flocculant and PH regulator dosing mouth, regulation
The outlet of retort 16 is connected with the water inlet of sedimentation tank 17 by water-delivery pump 21, and the bottom of sedimentation tank 17 is provided with precipitate row
Putting mouth, be provided with outlet and be connected with more medium filter 18 through pipeline in the middle part of sedimentation tank, the outlet of more medium filter 18 leads to
Cross the second high-pressure pump 22 and feed the water into the second nano-filtration membrane filter 19, the outlet of the second nano-filtration membrane filter and initial filter water tank 20
Being connected, the dense water outlet of the second nano-filtration membrane filter leads to regulation retort 16, initial filter water tank bottom outlet warp through pipeline
Clean pump 23 and lead to the second nano-filtration membrane filter 19, in order to clean the second nano-filtration membrane filter.
The work process of the present embodiment is as follows:
Open raw water pump, the water in raw water box is squeezed into quartz filter, removes the larger diameter solid impurity in former water, warp
Water after quartz sand filtration delivers to ozone contact tower, and in ozone contact tower, water and ozone counter current contacting, remove Organic substance in water,
Improving the absorbability of consequent activities charcoal, residual gas is emptied by ozone contact top of tower；Water after ozone contact tower processes
Through active carbon filter, the micro quantity organic pollutant in water is fallen in absorption, and is stored in intermediate water tank temporary；
Water in intermediate water tank is delivered to fine filter by force (forcing) pump again, filters out the dust in water by the PP cotton filter core in fine filter
And other coarse grained pollutant；Feeding the water into nano-filtration membrane filter by high-pressure pump to filter, the pure water prepared is again by purple
The antibacterial wherein remained killed by outer sterilizer lamp, finally sends into product water storage tank, and the dense water of generation selects according to testing result
Flowing to, the water return the most purified process of raw water pump that concentration is relatively low, the dense water that concentration is high is sent into dense Water Sproading and is utilized device；
Dense water enters dense Water Sproading and utilizes device to be first adjusted retort, and addition flocculant and PH regulator pass through after being sufficiently stirred for
Water-delivery pump sends into sedimentation tank precipitation, and water, after more medium filter filters, is sent by the supernatant of sedimentation tank by the second high-pressure pump
Entering the second nano-filtration membrane filter, the pure water of generation sends into initial filter water tank, and the dense water of generation sends into regulation retort, initial filter water bottom
The cleaned pump of outlet in portion leads to the second nano-filtration membrane filter, in order to clean the second nano-filtration membrane filter.
After testing, the present embodiment technical target of the product is as follows:
(1) high-performance composite nanometer filtering film: NaCl salt rejection rate >=80%, MgSO4Salt rejection rate >=90%, water flux >=1.5 ton/M2•
My god, chlorine resistance >=5000ppm h((test condition: 2000ppm NaCl/MgSO4, test pressure: 50 psi), chlorine resistance surpasses state
Border general NF membrane level 5 times, the super international NF membrane level of stain resistance 2 times.
(2) water-saving Central water purification processing system product water water quality reaches " direct drinking water water standard " CJ94, and producing water ratio carries
Up to more than 70%.
Above example is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every
The technological thought proposed according to the present invention, any change done on the basis of technical scheme, each fall within scope
Within.
Claims (8)
1. a NF membrane Central water purification processing system, including raw water box, quartz filter, ozone contact tower, activated carbon mistake
The dense Water Sproading that filter, nano-filtration membrane filter and water out dense with nano-filtration membrane filter are connected utilizes device, it is characterised in that
Described raw water box is connected with the water inlet of quartz filter by raw water pump, and described quartz filter outlet is smelly with described
Oxygen contact tower is connected, and the ozone inlet of described ozone contact tower bottom is connected with ozonator by high pressure positive blower；Described
The outlet of ozone contact tower is connected with the water inlet of active carbon filter through carbon filter pump, the outlet of described active carbon filter
Being connected with intermediate water tank, the outlet of described intermediate water tank is connected with fine filter by force (forcing) pump, and the outlet of fine filter passes through
High-pressure pump feeds the water into described nano-filtration membrane filter, and the outlet of described nano-filtration membrane filter installs ultraviolet germicidal, by purple
The outlet pipeline of outer germicidal lamp is connected with product water storage tank；The dense water outlet of described NF membrane is provided with two arms, and first
Arm utilizes device to be connected with dense Water Sproading, and the second arm is connected with the water inlet of described raw water pump；
Being provided with composite nanometer filtering film in described nano-filtration membrane filter, described composite nanometer filtering film includes supporting layer and the end stacked together
Film layer, described basal membrane layer surface introduces peroxy or epoxy-based functional reactive group, and described support layer surface introduces to use leads to
Interfacial polymerization techniques apply composite polyamide ultrathin functional layer, by the macromolecule of described composite polyamide ultrathin functional layer
Chain and the functional response group generation bonding action on basal membrane layer surface, it is achieved described supporting layer and basal membrane layer crosslinking combine.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that described dense Water Sproading utilizes dress
Putting and include regulating retort, sedimentation tank, more medium filter, the second nano-filtration membrane filter and initial filter water tank, described regulation is anti-
Answering tank to be provided with flocculant and PH regulator dosing mouth, the outlet of described regulation retort is entered by water-delivery pump and sedimentation tank
The mouth of a river is connected, and the bottom of described sedimentation tank is provided with sediment discharge mouth, is provided with outlet through pipeline with many in the middle part of described sedimentation tank
Medium filter is connected, and the outlet of described more medium filter feeds the water into described second NF membrane mistake by the second high-pressure pump
Filter, the outlet of described second nano-filtration membrane filter is connected with initial filter water tank, and the dense water of described second nano-filtration membrane filter goes out
Described regulation retort is led to through pipeline in the mouth of a river, and the described initial filter cleaned pump of water tank bottom outlet leads to described second NF membrane
Filter, in order to clean the second nano-filtration membrane filter.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that fill PP in described fine filter
Cotton filter core, the aperture of described PP cotton filter core is 5-20 micron.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that in described active carbon filter
Implant is active carbon loading silver filter element or hoary hair's sintering activity charcoal filter element.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that the dense water of described NF membrane goes out
It is provided with detection probe at the mouth of a river, is judged the break-make of two arms of described dense water water outlet by control circuit.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that on described quartz filter
It is provided with anti-overflow loop arm.
NF membrane Central water purification processing system the most according to claim 1, it is characterised in that described nano-filtration membrane filter by
Two NF membrane are arranged in parallel composition.
8. processing method based on the NF membrane Central water purification processing system described in claim 2, it is characterised in that concrete grammar
As follows:
Open raw water pump, the water in raw water box is squeezed into quartz filter, removes the larger diameter solid impurity in former water, warp
Water after quartz sand filtration delivers to ozone contact tower, and in ozone contact tower, water and ozone counter current contacting, remove Organic substance in water,
Improving the absorbability of consequent activities charcoal, residual gas is emptied by ozone contact top of tower；
Water after ozone contact tower processes falls the micro quantity organic pollutant in water through active carbon filter, absorption, and stores
Keep in intermediate water tank；
Water in intermediate water tank is delivered to fine filter by force (forcing) pump again, filters out the dust in water by the PP cotton filter core in fine filter
And other coarse grained pollutant；Feeding the water into nano-filtration membrane filter by high-pressure pump to filter, the pure water prepared is again by purple
The antibacterial wherein remained killed by outer sterilizer lamp, finally sends into product water storage tank, and the dense water of generation selects according to testing result
Flowing to, the water return the most purified process of raw water pump that concentration is relatively low, the dense water that concentration is high is sent into dense Water Sproading and is utilized device；
Dense water enters dense Water Sproading and utilizes device to be first adjusted retort, and addition flocculant and PH regulator pass through after being sufficiently stirred for
Water-delivery pump sends into sedimentation tank precipitation, and water, after more medium filter filters, is sent by the supernatant of sedimentation tank by the second high-pressure pump
Entering the second nano-filtration membrane filter, the pure water of generation sends into initial filter water tank, and the dense water of generation sends into regulation retort, initial filter water bottom
The cleaned pump of outlet in portion leads to the second nano-filtration membrane filter, in order to clean the second nano-filtration membrane filter.
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| CN201610557122.XA CN106045156A (en) | 2016-07-14 | 2016-07-14 | Nanofiltration membrane central water purification treatment system and treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587462A (en) * | 2016-12-08 | 2017-04-26 | 苏州赛斯德工程设备有限公司 | Treatment method for nanofiltration membrane central water purification system |
| CN106746071A (en) * | 2016-12-08 | 2017-05-31 | 苏州赛斯德工程设备有限公司 | A kind of nanofiltration membrane water purifier |
-
2016
- 2016-07-14 CN CN201610557122.XA patent/CN106045156A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587462A (en) * | 2016-12-08 | 2017-04-26 | 苏州赛斯德工程设备有限公司 | Treatment method for nanofiltration membrane central water purification system |
| CN106746071A (en) * | 2016-12-08 | 2017-05-31 | 苏州赛斯德工程设备有限公司 | A kind of nanofiltration membrane water purifier |
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