CN108328698A - A kind of continuous filter sewage device of graphene film and filter method - Google Patents
A kind of continuous filter sewage device of graphene film and filter method Download PDFInfo
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- CN108328698A CN108328698A CN201810368936.8A CN201810368936A CN108328698A CN 108328698 A CN108328698 A CN 108328698A CN 201810368936 A CN201810368936 A CN 201810368936A CN 108328698 A CN108328698 A CN 108328698A
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- 239000010865 sewage Substances 0.000 title claims abstract description 159
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 139
- 230000008569 process Effects 0.000 claims abstract description 44
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 238000005374 membrane filtration Methods 0.000 claims description 48
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 239000006004 Quartz sand Substances 0.000 claims description 36
- -1 polypropylene Polymers 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003828 vacuum filtration Methods 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 12
- 230000035699 permeability Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 41
- 238000011001 backwashing Methods 0.000 description 24
- 230000004907 flux Effects 0.000 description 21
- 238000007789 sealing Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 8
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 239000000429 sodium aluminium silicate Substances 0.000 description 7
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 7
- 150000001336 alkenes Chemical class 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010889 donnan-equilibrium Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000001320 hippocampus Anatomy 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 230000010148 water-pollination Effects 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- B01D71/021—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/04—Elements in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/06—Use of membrane modules of the same kind
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of continuous filter sewage device of graphene film and filter methods, belong to technical field of sewage.It includes sewage inlet, film processing system, dirt collecting tank and water collect tank.Technical solution of the present invention passes through the setting to pipeline in film processing system and electromagnetic valve Pipe Control Unit, sewage is set continuously to enter from sewage inlet, it is filtered sewage by film processing system, when the filter membrane in system, which reaches certain adsorbance, needs backwash, wastewater influent need not be interrupted, but the trend of water after filter processed in pipeline is gated by electromagnetic valve for adjusting and is directly backwashed, make that the positive filter process of sewage and backwash process are mutual indepedent, do not interfere with each other；Technical solution of the present invention can realize continuous uninterrupted filter sewage, and filtering membrane permeability is high, service life is long, and sewage treating efficiency is high.
Description
Technical field
The invention belongs to technical field of sewage, are filled more specifically to a kind of continuous filter sewage of graphene film
It sets and filter method.
Background technology
It, can also be to environment water, soil if the unprocessed direct emission environment of sewage can not only cause the waste of water resource
Etc. causing to seriously affect, be discharged into river, lake or bay, can polluted-water, influence aquatile growth and development；It is filled for agricultural
It irrigates, then can influence crop growth, health will also result in potentially hazardous.
Sewage disposal at present mostly uses greatly traditional activated sludge process, and activated sludge process improves out really to a certain extent
Water water quality, but generally existing probability of meeting water quality standard is low, water quality is unstable, sludge quantity is more and it is difficult the shortcomings of.If using film biology
Reactor (MBR) technique can make effluent quality reach can with the degree of direct reuse, but since film cost is higher,
And film contamination resistance is poor, restorability energy and impact resistance are bad.
Due to graphene large specific surface area, the characteristics such as chemical stability is good, modifiability is strong, can be had using graphene film
Macromolecular suspended contaminant etc., a large amount of using the electronegativity and surface of Graphene derivative graphene oxide in effect retention sewage
The free radicals such as hydroxycarboxyl group, can be with strong adsorption ammonium ion；According to Donnan effects, graphene oxide membrane will to electronegativity from
Son generates repellency, and electronegativity ion is hindered to pass through film.Graphene and its derivative have large specific surface area, water flux and dirt
It is good to contaminate object rejection effect, surface carries electronegativity, has certain ion selectivity and has strong absorption property etc. to ammonium root
Advantage, suitable for having the sewage disposal of certain macromolecule contaminant and nitrogen pollutant, such as sanitary sewage etc..
For example a kind of graphene film filter method (publication number for oily waste water treatment of existing sewage water treatment method：
CN201710569470.3 a kind of graphene-based filter device of oily wastewater) is disclosed, wherein the front end water passes through pipe
Line connection carrys out water tank, comes one end that water tank is connected to graphene-based nethike embrane filter device, graphene-based nethike embrane filtering
The other end of device connects elevator pump, elevator pump connection production water header tank, and medicine washes pump and connects graphene-based nethike embrane filter device
The lower part on top, graphene-based nethike embrane filter device is connected to Sewage mud sump, graphene-based nethike embrane filtering dress by sewage pipeline
The top set is additionally provided with the pipeline communicated with production water header tank, and has backwashing pump on the pipeline；Its advantage is treated sewage
Oil content meets third level water quality requirement and oil-field flooding water quality requirement.But the prior art is filtered dirt using graphene film
When water, when graphene film, which reaches certain adsorbance, needs backwash, need to interrupt wastewater influent, using water after filter through backwashing pump
It is backwashed.
For example a kind of graphene effluent filter (Chinese patent Authorization Notice No. CN of existing sewage-treatment plant
A kind of graphene effluent filter 206562318U) is disclosed, technical field of sewage is related to；It includes cylinder, graphene
Adsorption layer, top tray, lower tray, piston rod, hydraulic cylinder, filtered water inlet mouth, sewage draining exit, filtering water outlet, backwash water inlet；
Graphene adsorption layer is provided in the cylinder, the upper and lower surface of graphene adsorption layer is respectively arranged with top tray and subiculum
Disk, cylinder are provided centrally with piston rod, and piston rod upper end is connect with hydraulic cylinder；The bottom of the cylinder be provided with filter into
The mouth of a river and sewage draining exit are provided with filtering water outlet and backwash water inlet at the top of cylinder；The graphene adsorption layer is by stone
Black alkene and high molecular polymer are constituted, and graphene is equipped in high molecular polymer.Its advantage is that adsorption capacity is big, for absorption weight
Metal ion mercury, graphene reproducible utilization, use cost is low, it is simple in structure, setting rationally, low manufacture cost.But use stone
When black alkene film is filtered sewage, when graphene film, which reaches certain adsorbance, needs backwash, it is also desirable to wastewater influent is interrupted,
Enter water after filter, and the disposition method of the sewage generated after undisclosed backwash from individual backwash water inlet.
Above two prior art constructions are simple, but all have can not continuous operation, equipment investment is higher, power consumption is big etc.
Problem.
A kind of processing unit (application number of integral automation purification oily waste water particulate matter and oil of the prior art
CN201610165335.8 a kind of processing unit of integral automation purification oily waste water particulate matter and oil) is disclosed, including
Pressure-bearing tank, filter device, driving device and recoiling device, recoiling device include back flush line, shaft and sucker, the shaft
Top be placed in the top of upper sealing plate, the lower part of shaft passes through the upper sealing plate to extend into the inside of pressure-bearing tank, driving device and
The top of the shaft connects；The back flush line extends to the top of upper sealing plate by shaft；The sucker is under
On the inner surface of sealing plate fitting slide and can keep sealing, the filtering mouth be arranged the sucker sliding trace it
On, the present invention can effectively filter oil field waste, be recoiled with atmospheric pressure difference using filtering monomer bottom, can be in filtering
When realize recoil, it is inefficient to solve traditional method processing waste water, the problem of can not achieve continuous work, has processing
The advantages that water is big, firm in structure, but there is also volume mass larger, replacement not easy to repair, device is complicated and turntable needs to grow
The problems such as phase adds lubricating oil to safeguard, easily get rusty.
Invention content
1, it to solve the problems, such as
For the low problem of existing sewage disposal process interruption, efficiency, a kind of graphene film of present invention offer continuously filters
Sewage device and filter method, using the backwash of electromagnetic valve control sewage just filtering and film, device volume quality is smaller, holds
Easy-maintaining replacement does not have to long term maintenance, and electromagnetic valve control is simple, can by adjust program control sewage just filtering with
Backwashing time interval ensures that sewage continuously uninterruptedly filters.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of continuous filter sewage device of graphene film, including sewage inlet, film processing system, dirt collecting tank, water collect tank,
The film processing system is including the first membrane filtration pipeline, the second membrane filtration pipeline and electromagnetic valve Pipe Control Unit and accordingly
Connecting pipeline, the electromagnetic valve Pipe Control Unit control device when just filtering described two membrane filtration pipelines with parallel way
Connect sewage inlet and water collect tank, two membrane filtration pipelines connect sewage inlet and dirt collection in a series arrangement when backwash
Tank.
Preferably, the dirt collecting tank is equipped with elevator pump, and discharge outlet is connected by the discharge outlet and the sewage inlet
It is logical, backwashing sewage water secondary filter can be eliminated discharge of wastewater.
Preferably, graphene film is set in the membrane filtration pipeline, pipeline is fixed on by outer silk reducing；The fixation side
Formula is two segment pipe intercalated graphite alkene films, and is fixed using outer silk reducing in outside, is replaced convenient for graphene film.
Preferably, the graphene film by graphene oxide dispersion by vacuum filtration method or surface rubbing method in template
Surface is made, and the template is that mesh number is the stainless (steel) wire of 500~1000 mesh, Kynoar (PVDF) or polypropylene
(PP)。
Preferably, a concentration of 0.5mg/L of the graphene oxide.
Preferably, the graphene film thickness is 1.5mm.
Preferably, the sodium aluminosilicate modified graphene oxide solution of a concentration of 0.5mg/L of the graphene oxide dispersion.
Preferably, respectively one layer of quartz sand layer of setting extends the graphene film upper and lower for hindering greater particle size particle
The graphene film contaminated time blocked, between each layer of quartz sand layer is fixed on two segment pipes down through sieve, just
It is dismantled in quartz sand layer.
Preferably, the thickness of the quartz sand is 20~50mm, is located at 20~50mm of graphene film or more.
Preferably, the quartz sand is arranged from top to bottom according to the sequence of grain diameter from big to small.
Preferably, water pressure gauge, booster pump are additionally provided at the sewage inlet, the water pressure gauge is located at the booster pump
Lower section, the booster pump control intake pressure ranging from 5~15kpa in single membrane filtration pipeline, and booster pump connects with pipeline
Place is sealed using sealing ring, prevents from seeping water.
Preferably, the upper end vertex of the sewage inlet connection triangular form pipeline, two of the triangular duct
Lower end vertex connects a H pipe road, and two lower extreme points in H pipe road connect the water collect tank；The graphene film is set to
The H shapes pipeline is located in the middle part of two upper half segment pipes above horizontal pipe；The pipeline of the triangle base and the collection
Dirty tank is connected by pipeline；The electromagnetic valve Pipe Control Unit includes：Positioned at triangular duct and H-shaped pipeline junction
Three-way magnetic valve door and three-way magnetic valve door, be located at H pipe road horizontal pipe on a two three-way electromagnetic valve doors, and respectively
Positioned at the two three-way electromagnetic valve doors and two three-way electromagnetic valve doors of two, H pipe road lower extreme point and dirt collecting tank connectivity part.
Preferably, the dirt collecting tank is " u "-shaped dirt collecting tank, has stronger shock resistance.
Preferably, the bottom of the dirt collecting tank is provided with urgent drain valve, can be by beating when there is line clogging
It opens this valve and promptly drains blowdown, it is convenient to overhaul.
Preferably, air bleeding valve is provided on the tank body of the water collect tank, the air bleeding valve can ensure the pressure in water collect tank
Power is in normal pressure state, is conducive to the operation of filter process.
Preferably, the water collect tank is " u "-shaped water collect tank, and water outlet is provided on the water collect tank, and water collect tank is collected
Filtered water after filter, to be further processed.
Preferably, the bottom of the water collect tank is provided with urgent drain valve, when there is line clogging, can pass through opening
This valve promptly drains, convenient to overhaul.
Preferably, the water outlet of the water collect tank is equipped with flowmeter, for detecting water stability in real time and judging to set
Standby working order.
Preferably, it is provided with upper sealing plate at the top of the water collect tank, reinforces sealing effect, prevents water collect tank from seeping water.
Preferably, the electromagnetic valve is mounted on sealing ring, prevents infiltration leak.
Preferably, the film processing system unit is two or more, be connected in parallel in sewage inlet and water collect tank it
Between, to increase processing capacity.
The present invention also provides a kind of method using the continuous filter sewage device filter sewage of graphene film as described above,
Include the following steps：
1) the positive filter sewage stage：Setting electromagnetic valve Pipe Control Unit makes two membrane filtration pipelines connect with parallel way
Sewage inlet and water collect tank are connect, so that sewage is respectively enterd two membrane filtration pipelines by sewage inlet and is just being filtered, after filter
Water flows into water collect tank；
2) backwash stage：Setting electromagnetic valve Pipe Control Unit makes two film process pipelines connect dirt in a series arrangement
Water water inlet and dirt collecting tank make sewage just be filtered into the first membrane filtration pipeline, and water after filter is anti-by the second membrane filtration pipeline
To entrance, the second filter membrane is rinsed, the sewage after backwash flows into dirt collecting tank, completes the backwash of the second filter membrane；Switching electricity
Magnet valve door Pipe Control Unit makes two film process pipelines connect sewage inlet and dirt collecting tank in a series arrangement, keeps sewage advanced
Enter the second membrane filtration pipeline just to be filtered, water after filter is redirected back by the first membrane filtration pipeline, rinses the first filter membrane, recoil
Sewage after washing flows into dirt collecting tank, completes the backwash of the first filter membrane；
3) after setting time, the sewage continuously entered goes successively to the positive filtration stage described in step 1).
Preferably, sewage can be promoted to sewage while each backwash by elevator pump in the step 2) dirt collecting tank
Water inlet processing.
Preferably, sewage can be promoted to wastewater influent after multiple backwash by elevator pump in the step 2) dirt collecting tank
Mouth centralized processing.
Preferably, after step 1) the positive filter process carries out 5~10 cycles with the step 2) backwash process, then
Sewage lifting in the dirt collecting tank to sewage inlet is subjected to concentration filter.
Preferably, booster pump pressurization is used to make the pressure in single membrane filtration pipeline for 5~15kpa in step 2).
Preferably, setting steps 1) described in positive filtration time be 2~5min.
Preferably, setting steps 2) described in the first filter membrane of backwash and the time range of the second filter membrane be respectively 10
~30s.3, advantageous effect
Compared with the prior art, beneficial effects of the present invention are：
(1) present invention passes through two membrane filtrations when electromagnetic valve Pipe Control Unit control pipeline mode of communicating, just filtering
Pipeline connects sewage inlet and water collect tank with parallel way, and two membrane filtration pipelines connect sewage in a series arrangement when backwash
Water inlet and dirt collecting tank make sewage continuously enter from sewage inlet, are filtered sewage by filter membrane, work as filtering
When film reaches certain adsorbance and needs backwash, it is not necessary to interrupt wastewater influent, but pass through electromagnetic valve for adjusting door and change water after filter
Conveying direction be allowed to directly be backwashed, filter sewage process and backwash process independently of each other, do not interfere with each other, Neng Goushi
Existing continuum micromeehanics, sewage treating efficiency are high；Meanwhile in traditional technology generally using extract water collect tank in water after filter to filtering
The method that film is backwashed is compared, and the sewage that the present invention directly uses sewage inlet to enter first just is being filtered through a filter membrane
The step of backwashing to another filter membrane again, simplify backwash and reduce the increase that may use when extracting water after filter
Pump；Moreover, the setting of electromagnetic valve realizes that sewage continuously enters, instead of devices such as motor turntables in the prior art, greatly
Installation weight and volume are alleviated, repair is facilitated to replace, sewage disposal and backwashing time are controllable, easy to operate, not perishable,
It is highly reliable；
(2) present invention is filtered the sewage secondary after backwash by the way that dirt collecting tank discharge outlet is connected to sewage inlet,
Sewage discharge is effectively eliminated, water resource waste is reduced and utmostly purifies sewage, improves sewage treating efficiency；
(3) present invention purifies sewage using the excellent properties and resistance to compression durability against pollution of graphene film, utilizes graphite
The functional groups such as a large amount of hydroxycarboxyl group of the electronegativity of ene derivative graphene oxide and surface, can be with strong adsorption ammonium ion；
According to Donnan effects, graphene oxide membrane will generate repellency to electronegativity ion, and electronegativity ion is hindered to pass through film；Together
When its with large specific surface area, water flux and pollutant rejection effect are good, and having certain ion selectivity and has ammonium root
Strong absorption property, suitable for there is the sewage disposal of certain macromolecule contaminant and nitrogen pollutant.Pass through graphene oxide
Lower interlamellar spacing retention suspended matter and macromolecule contaminant, by graphene oxide relevant nature absorption retention containing carbonyl,
The organic matter of the unsaturated functional groups such as phenyl ring plays the role of reducing suspended matter and COD concentration in water.
(4) graphene film uses sodium aluminosilicate inertia trim modified graphene oxide in the present invention, in pole dilute concentration oxygen
Ultrasonic disperse is made in graphite alkene solution, and the very thin stone of thickness can be produced using pole dilute concentration graphene oxide solution
Black alkene film, can it is more complete retain graphene single layer structure, and can by repeatedly filter or be coated with making suitable thickness
Film；After being modified using sodium aluminosilicate, sodium aluminosilicate modified graphene solution can play reduction interlamellar spacing, increase hole
The effects that rate, compactness, has a certain upgrade to hydrophily, impact resistance and contamination resistance；
(5) present invention intercepts larger particles, graphene film is cut in graphene film quartz sand layer setting up and down by quartz sand layer
Finely ground particle substance is stayed, makes device under the premise of ensureing flux, reaches best treatment effect, graphene film uses two segment pipes
It intercalated graphite alkene film and being connected by outer silk reducing, quartz sand layer fixed in two segment pipes using sieve, and structure facilitates dismantling,
Graphene film and quartz sand are convenient for changing；
(6) present invention using in filter pipe pressure and be regularly opened and closed electromagnetic valve, control backwashing time, energy
Decontaminate substance in time, reduces filtration resistance, improves filter efficiency and filtering accuracy, while simultaneously by the discharge of microparticle suspended matter
It effectively collects, reduces operating cost, the target of energy-saving and emission-reduction can be reached；By to backwash mode, intensity and duration
The optimization of parameter makes graphene film keep high-permeability in the case where saving water resource to greatest extent, and graphene film uses
Long lifespan, sewage treating efficiency are high；
(7) in the present invention multiple film process units setting, each film process unit respectively works independently, can not only meet
The demand of treated sewage simultaneously when water is larger, additionally it is possible to ensure wherein one or several film process units occur blocking or its
When its failure, other film process units can continue to work disposal sewage；
(8) experiment shows under single pipeline 7.5kpa hydraulic pressure in the embodiment of the present invention 1, when 500 mesh graphene films of use
Continuous filtering 2min, membrane flux only decline 2.5%, are respectively 58.55% and 66.94% to suspended matter and COD removal rates, carry out
After 10min continuous processings, suspended matter and COD removal rates can reach 80%, this is because continuous filtering, polluter can be
One layer of pollution layer is formed on diaphragm, which can make flux depression to a certain extent, but can be risen to subsequent contamination substance
To certain retention adsorption effect, so continuous filtering can be such that pollutants removal rate increases to a certain extent, when removal rate reaches
When to a certain extent, continuous filtering will not increase removal rate, instead because the blocking of film and compression shock make removal rate subtract
It is small；97% or more of flux (can root before graphene film is that can reach pollution in single pipeline 5kpa hydraulic pressure backwash 10s after pollution
Increase backwashing time according to pollution condition)；In embodiment 2, under single pipeline 10kpa hydraulic pressure, connected using 800 mesh graphene films
Continuous filtering 5min, flux depression 7.5% are respectively 59.72% and 79.12% to suspended matter and COD removal rates, carry out
After 30min continuous processings, suspended matter and COD removal rates can reach 85%.Graphene film recoils in 5kpa hydraulic pressure after pollution
Wash 97% or more (backwashing time can be increased according to pollution condition) that 20s can reach flux before pollution；In embodiment 3,
Under single pipeline 15kpa hydraulic pressure, the continuous filter 23 min of 1000 mesh graphene films, flux depression 15.5%, to suspended matter are used
And COD removal rates are respectively 67.12% and 85.34%, and after carrying out 20min continuous processings, suspended matter and COD removal rate highests
It can reach 90%.97 % or more of flux (can before graphene film is that can reach pollution in 10kpa hydraulic pressure backwash 30s after pollution
Increase backwashing time according to pollution condition).
Description of the drawings
Fig. 1 is the process flow chart of the continuous positive filter process of filter sewage device of graphene film of the present invention.
Fig. 2 is the process flow chart of the continuous filter sewage device backwash process of graphene film of the present invention.
Fig. 3 is the continuous filter sewage schematic device of graphene film in the embodiment of the present invention 1.
Fig. 4 is the continuous filter sewage schematic device of graphene film in the embodiment of the present invention 2.
Fig. 5 is the continuous filter sewage schematic device of graphene film in the embodiment of the present invention 3.
In figure：1, water inlet, 2, booster pump, 3, water pressure gauge, 4, three-way magnetic valve door, 5, three-way magnetic valve door, 6, sieve,
7, quartz sand layer, 8, graphene film, 9, outer silk reducing, 10, two three-way electromagnetic valve doors, 11, two three-way electromagnetic valve doors, 12, two energization magnetic
Valve, 13, water outlet, 14, water collect tank, 15, the urgent drain valve of water collect tank, 16, dirt collecting tank discharge outlet, 17, dirt collecting tank, 18, collection
The dirty urgent drain valve of tank, 19, upper sealing plate, 20, air bleeding valve, 21, flowmeter, 22, elevator pump, 23, backwash water outlet；a、b、c
For the three-way cock of three-way magnetic valve door 5；A ', b ', the three-way cock that c ' is three-way magnetic valve door 4.
Specific implementation mode
Detailed description of the present invention embodiment below in conjunction with the accompanying drawings, examples of the embodiments are shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the present invention, and be not considered as limiting the invention.
On the contrary, the embodiment of the present invention includes the spirit for falling into attached claims and all changes within the scope of intension, modification
And equivalent.
Embodiment 1
A kind of continuous filter sewage device of graphene film, including sewage inlet 1, film processing system, dirt collecting tank 17, electromagnetism
Valve pipeline control unit, water collect tank 14.
As shown in attached drawing 1, attached drawing 2, attached drawing 3, the sewage inlet 1 is equipped with water pressure gauge 3, booster pump 2, the water pressure gauge
3 are located at below increasing pump 2, the upper end vertex of the connection triangular form pipeline of the sewage inlet 1, and the two of the triangular duct
A lower end vertex connection H pipe road, the pipeline that one bevel edge pipeline of triangle is connected with H pipe road form the first membrane filter tube
Road, pipeline the second membrane filtration pipeline of composition that another bevel edge pipeline of triangle is connected with H pipe road, two of H pipe road
Lower extreme point connects the water collect tank 14, and 14 side of the water collect tank is provided with air bleeding valve 20 and water outlet 13, and water outlet 13 connects
Flowmeter 21,14 bottom of water collect tank are equipped with the urgent drain valve of water collect tank 15；The first membrane filtration pipeline and the second membrane filtration
The quartz sand layer 7 that pipeline includes graphene film 8 and each a layer thickness at about 8 20mm of graphene film is 20mm, institute
The graphene film 8 stated is fixed on H pipe road using outer silk reducing 9, and about 7 quartz sand layer is fixed using sieve 6, described
Graphene film 8 and quartz sand layer 7 are set in the middle part of the two upper half square tube roads in the H pipe road, quartz sand according to grain diameter from
Small sequence is arrived greatly to arrange from top to bottom；The pipeline of the triangle base is with the dirt collecting tank 17 by backwashing water outlet 23
Connection；The electromagnetic valve Pipe Control Unit includes：Positioned at the three-way magnetic valve door of triangular duct and H-shaped pipeline junction
4 and three-way magnetic valve door 5, a two three-way electromagnetic valve doors 10 being located on H pipe road horizontal tube, and it is located at H pipe road
The two three-way electromagnetic valve doors 11 and two three-way electromagnetic valve doors 12 of two bottom ends and 14 connectivity part of water collect tank, the electromagnetic valve open and close
Time is controllable；17 bottom of the dirt collecting tank is provided with the urgent drain valve 18 of dirt collecting tank and discharge outlet 16, discharge outlet 16 and sewage into
The mouth of a river 1 is connected to by pipeline, can be promoted to water inlet 1 by elevator pump 22；14 top of the water collect tank is provided with upper sealing plate
19, upper sealing plate 19 is connect with lower end of duct edge seal, for reinforcing sealing effect, prevents water collect tank 14 from seeping water.
For the graphene film 8 using stainless (steel) wire as template, template mesh number is 500 mesh, will be dense using method of spin coating
Degree is that the sodium aluminosilicate modified graphene oxide dispersion liquid of 0.5mg/mL is formed coated in template surface.
The sewage disposal process includes two processes of positive filtering and backwash.
The positive filter process is：As shown in attached drawing 1, attached drawing 3, a ', the b ' valves and three of three-way magnetic valve door 4 are opened
A, b valve of three-way electromagnetic valve door 5, two three-way electromagnetic valve doors 11 and two three-way electromagnetic valve doors 12 close two three-way electromagnetic valve doors 10, and setting is just
Filtration time is 2min, sets booster pump and hydraulic pressure is increased to single loine pressure as 7.5kpa；COD is a concentration of in sewage
100mg/L, concentration of suspension 30mg/L enter sewage inlet 1 by water inlet line, and hydraulic pressure increases after booster pump 2, flow into
Two bevel edge branch line of triangle, passes through a, b valve of a ' of three-way magnetic valve door 4, b ' valves and three-way magnetic valve door 5 respectively
Door enters H pipe road, and sewage enters quartz sand layer 7, continues down through graphene film 8, is flowed out from quartz sand layer 7, water after filter
Entered in water collect tank 14 by two three-way electromagnetic valve doors 11 and two three-way electromagnetic valve doors 12, graphene film 8 is after 2min is filtered, membrane flux
Decline 2.5%, suspended matter and COD removal rates are respectively 58.55% and 66.94%.
The backwash process is：It first backwashes the film in the first membrane filtration pipeline and backwashes the second membrane filtration pipeline again
In film, or first backwash the film in the second membrane filtration pipeline and backwash film in the first membrane filtration pipeline again.
The film in the first membrane filtration pipeline is backwashed, then closes a ', b ' switch of three-way magnetic valve door 4, opens three and be powered
B ', c ' switch of magnet valve door 4 and a, b of three-way magnetic valve door 5 are switched, and are opened two three-way electromagnetic valve doors 10, are closed two three-way electromagnetic valves
Door 11 and two three-way electromagnetic valve doors 12, sets on the left of backwash 8 time of graphene film as 10s, backwashing pressure 5kpa；Sewage
Enter from sewage inlet 1, H-type pipeline is flowed by three-way magnetic valve door 5 by triangular duct right branch, in booster pump
Under pressure effect, successively after right side quartz sand layer 7, graphene film 8, quartz sand layer 7 filter, water after filter is again through two energization magnetic
Left side quartz sand layer 7 and graphene film 8 are backwashed under pressure after valve 10, backwash water outlet is through threeway electromagnetism
B ', c ' switch of valve 4 flow into triangle base pipeline, enter dirt collecting tank 17 by backwashing water outlet 23, at this time left side stone
Black 8 flux of alkene film reaches 97% or more of the preceding flux of pollution.
The film in the second membrane filtration pipeline is backwashed, a, b switch of three-way magnetic valve door 5 is closed, opens three-way magnetic valve
The b of door 5, a ', b ' switch of c switch and three-way magnetic valve door 4, open two three-way electromagnetic valve doors 10, close two three-way electromagnetic valve doors 11
With two three-way electromagnetic valve doors 12, set backwash right side 8 time of graphene film as 10s, backwashing pressure 5kpa；Sewage is from sewage
Water inlet 1 enters, and H-type pipeline is flowed by three-way magnetic valve door 4 by triangular duct left branch, makees in supercharging pump pressure
Under, successively after left side quartz sand layer 7, graphene film 8, quartz sand layer 7 filter, water after filter is again through two three-way electromagnetic valve doors 10
Right side quartz sand layer 7 and graphene film 8 are backwashed under pressure afterwards, backwash water outlet is through three-way magnetic valve door 5
B, c switch flow into triangle base pipeline, by backwash water outlet 23 enter dirt collecting tank 17, at this time right side graphene film 8
Flux reaches 97% or more of the flux before pollution.
Sewage continuously enters, and after 2min is just filtered, backwashes each 10s of two side forms respectively, completes single treatment overall process；
Then positive filter process is carried out again, is recycled into second, and the positive filtering is carried out continuously with backwash two parts, is not done mutually
It disturbs.
The dirt collecting tank 17 can collect the impurity and pollutant that recoil is come out, and prevent pollution environment, and can be to recoil
Cleaning device plays certain protective action；After positive filtering and backwash whole process carry out 5 cycles, concentrate backwashing sewage water
Continuance lifting, which merges to sewage inlet 1 with the sewage normally entered, continuously to be filtered, and sewage discharge, most is can effectively eliminate
Big degree purifies water.After carrying out 10min continuous processings, water after filter suspended matter and COD removal rates reach 80% in water collect tank.
Embodiment 2
A kind of continuous filter sewage device of graphene film, including sewage inlet 1, film processing system, dirt collecting tank 17, electromagnetism
Valve pipeline control unit, water collect tank 14.
As shown in attached drawing 1, attached drawing 2, attached drawing 4, the sewage inlet 1 is equipped with water pressure gauge 3, booster pump 2, the water pressure gauge
3 are located at below increasing pump 2, the upper end vertex of the connection triangular form pipeline of the sewage inlet 1, and the two of the triangular duct
A lower end vertex connects Y-shaped pipeline, and the pipeline that one bevel edge pipeline of triangle is connected with Y-shaped pipeline forms the first membrane filter tube
Road, pipeline that another bevel edge pipeline of triangle is connected with Y-shaped pipeline form the second membrane filtration pipeline, end pipe under Y-shaped pipeline
Road connects the water collect tank 14, and 14 side of the water collect tank is provided with air bleeding valve 20 and water outlet 13, and water outlet 13 connects flow
Meter 21,14 bottom of water collect tank are equipped with the urgent drain valve of water collect tank 15；The first membrane filtration pipeline and the second membrane filtration pipeline
The quartz sand layer 7 that each a layer thickness including graphene film 8 and at about 8 30mm of graphene film is 30mm, it is described
Graphene film 8 is fixed on Y-shaped pipeline using outer silk reducing 9, and about 7 quartz sand layer is fixed using sieve 6, the stone
Black alkene film 8 and quartz sand layer 7 are set in the middle part of two upper half square tube roads of the Y-shaped pipeline, and quartz sand is according to grain diameter from big
It is arranged from top to bottom to small sequence；The pipeline of the triangle base is connected with the dirt collecting tank 17 by backwashing water outlet 23
It is logical；The electromagnetic valve Pipe Control Unit includes：Three-way magnetic valve door 4 positioned at triangular duct Yu Y-shaped pipeline junction
With three-way magnetic valve door 5, a two three-way electromagnetic valve doors 10 being located at Y-shaped pipeline lower channel, and two-way valve 10 is located at tightly
Close to three pipe intersections to store sewage when preventing backwash, two three-way electromagnetic valve doors, 10 one end is connected to two membrane filtration pipelines, separately
One end is connected to water collect tank 14, and the electromagnetic valve open and close time is controllable；It is tight that 17 bottom of the dirt collecting tank is provided with dirt collecting tank
Anxious drain valve 18 and discharge outlet 16, discharge outlet 16 are connected to sewage inlet 1 by pipeline, can be promoted to by elevator pump 22 into
The mouth of a river；14 top of the water collect tank is provided with upper sealing plate 19, and upper sealing plate 19 is connect with lower end of duct edge seal, close for reinforcing
Effect is sealed, prevents water collect tank 14 from seeping water.
It is 800 mesh that the graphene film 8 is used as template, template mesh number using Kynoar (PVDF), is applied using rotation
Cloth method forms the sodium aluminosilicate modified graphene oxide dispersion liquid of a concentration of 0.5mg/mL coated in template surface.
The sewage disposal process includes two processes of positive filtering and backwash.
The positive filter process is：Such as attached drawing 1, shown in attached drawing 4, a ' of three-way magnetic valve door 4, b ' valves, three are opened
A, b valve of three-way electromagnetic valve door 5 and two three-way electromagnetic valve doors 10 set positive filtration time as 5min, and setting booster pump increases hydraulic pressure
It is 10kpa to add to single loine pressure；A concentration of 120mg/L of COD in sewage, concentration of suspension 45mg/L, by water inlet line
Into sewage inlet 1, hydraulic pressure increases after booster pump 2, flows into two bevel edge branch line of triangle, passes through three-way magnetic valve door
A, b valve of 4 a ', b ' valves and three-way magnetic valve door 5 enter two membrane filtration pipelines of Y-shaped pipeline, and sewage enters quartz
Layer of sand 7 continues down through graphene film 8, is flowed out from quartz sand layer 7, and water after filter is entered by two three-way electromagnetic valve doors 10 catchments
In tank 14, graphene film 8 is after 5min is filtered, flux depression 7.5%, and suspended matter and COD removal rates are respectively 59.72% He
79.12%.
The backwash process is：It first backwashes the film in the first membrane filtration pipeline and backwashes the second membrane filtration pipeline again
In film, or first backwash the film in the second membrane filtration pipeline and backwash film in the first membrane filtration pipeline again.
The film in the first membrane filtration pipeline is backwashed, then opens a, b switch and three-way magnetic valve door of three-way magnetic valve door 5
4 b ', c ' switch, close two three-way electromagnetic valve doors 10, set backwash on the left of 8 time of graphene film as 20s, backwashing pressure
For 5 kpa；Sewage enters from sewage inlet 1, and the shape of the mouth as one speaks is flowed by three-way magnetic valve door 5 by triangular duct right branch
Pipeline, under supercharging pump pressure effect, successively after right side quartz sand layer 7, graphene film 8, quartz sand layer 7 filter, after filter
Water again directly backwashes left side quartz sand layer 7 and graphene film 8 through three pipe intersection of Y-shaped pipeline, backwash water outlet warp
B ', c ' switch of three-way magnetic valve door 4 flow into triangle base pipeline, enter dirt collecting tank 17 by backwashing water outlet 23, this
When left side 8 flux of graphene film reach pollution before flux level.
The film in the second membrane filtration pipeline is backwashed, then opens a ', b ' switch and three-way magnetic valve of three-way magnetic valve door 4
Door 5 b, c switch, close two three-way electromagnetic valve doors 10, set backwash on the right side of 8 time of graphene film as 20s, backwashing pressure
For 5kpa；Sewage enters from sewage inlet 1, and Y types are flowed by three-way magnetic valve door 5 by triangular duct right branch
Pipeline, under supercharging pump pressure effect, successively after right side quartz sand layer 7, graphene film 8, quartz sand layer 7 filter, after filter
Water again directly backwashes left side quartz sand layer 7 and graphene film 8 through three pipe intersection of Y-shaped pipeline, backwash water outlet warp
B, the c switch of three-way magnetic valve door 5 flow into triangle base pipeline, enter dirt collecting tank 17 by backwashing water outlet 23, at this time
Graphene film 8 flux in left side reaches the flux level before pollution.
Sewage continuously enters, and after 5min is just filtered, backwashes each 20s of two side forms respectively, completes single treatment overall process；
Then positive filter process is carried out again, is recycled into second, and the positive filtering is carried out continuously with backwash two parts, is not done mutually
It disturbs.
The dirt collecting tank 17 can collect the impurity and pollutant that recoil is come out, and prevent pollution environment, and can be to recoil
Cleaning device plays certain protective action；While positive filtering and backwash, by backwashing sewage water continuance lifting to wastewater influent
Mouth merges with the sewage normally entered continuously to be filtered, and be can effectively eliminate sewage discharge, is utmostly purified water.It carries out
After 30min continuous processings, water after filter suspended matter and COD removal rates reach 85%.
Embodiment 3
As shown in attached drawing 1, attached drawing 2, attached drawing 5, in such a way that the film process unit in four embodiments 2 is in parallel, make four
A film process unit is commonly connected between sewage inlet 1 and water collect tank 14.The sewage disposal process and 2 base of embodiment
This is identical, the difference is that：
It is 1000 mesh that the graphene film 8 is used as template, template mesh number using polypropylene (PP), will using vacuum filtration method
The sodium aluminosilicate modified graphene oxide dispersion liquid of a concentration of 0.5mg/mL is formed coated in template surface.
The first membrane filtration pipeline and the second membrane filtration pipeline includes graphene film 8 and is located on graphene film 8
The quartz sand layer 7 that each a layer thickness at lower 50 mm is 50mm.
Positive filter process is：Such as attached drawing 1, shown in attached drawing 5, positive filtration time is set as 3min, sets booster pump by hydraulic pressure
It is 15kpa to increase to single loine pressure；A concentration of 150mg/L of COD in sewage, concentration of suspension 80mg/L, graphene film 8
After 3min is just filtered, flux depression 15.5%, suspended matter and COD removal rates are respectively 67.12% and 85.34 %.
The backwash process is：Backwash left side 8 time of graphene film is set as 30s, backwashing pressure is
10kpa；Backwash the film in the second membrane filtration pipeline, set backwash right side 8 time of graphene film as 30s, backwashing pressure
For 10kpa.
Sewage continuously enters, and after 3min is just filtered, backwashes each 30s of two side forms respectively, completes single treatment overall process；
Then positive filter process is carried out again, is recycled into second, and the positive filtering is carried out continuously with backwash two parts, is not done mutually
It disturbs.
The dirt collecting tank 17 can collect the impurity and pollutant that recoil is come out, and prevent pollution environment, and can be to recoil
Cleaning device plays certain protective action；While positive filtering and backwash, by backwashing sewage water continuance lifting to wastewater influent
Mouth merges with the sewage normally entered continuously to be filtered, and be can effectively eliminate sewage discharge, is utmostly purified water.It carries out
After 20min continuous processings, water after filter suspended matter and COD removal rates reach 90%.
It is arranged for optimization pipeline, four film process units in the present embodiment can also be used with straight where sewage inlet
Line is that axis is arranged in the symmetrical formal distributions of C4 (rotation) or other possible modes, it is not limited to be anticipated shown in attached drawing 5
Arrangement mode.
Claims (10)
1. a kind of continuous filter sewage device of graphene film, which is characterized in that including sewage inlet (1), film processing system, collection
Dirty tank (17), water collect tank (14), the film processing system include the first membrane filtration pipeline, the second membrane filtration pipeline and electromagnetic valve
Pipe Control Unit, the electromagnetic valve Pipe Control Unit control device when just filtering described two membrane filtration pipelines with parallel connection
Mode connects sewage inlet (1) and water collect tank (14), when backwash two membrane filtration pipelines connect in a series arrangement sewage into
The mouth of a river (1) and dirt collecting tank (17).
2. the continuous filter sewage device of a kind of graphene film according to claim 1, which is characterized in that the dirt collecting tank
(17) it is connected to the sewage inlet (1).
3. the continuous filter sewage device of a kind of graphene film according to claim 2, which is characterized in that the membrane filter tube
Graphene film (8) is set in road, pipeline is fixed on by outer silk reducing (9).
4. the continuous filter sewage device of a kind of graphene film according to claim 3, which is characterized in that the graphene film
(8) it is made in template surface by vacuum filtration method or surface rubbing method by graphene oxide dispersion, the template is
Mesh number is stainless (steel) wire, Kynoar or the polypropylene of 500~1000 mesh.
5. the continuous filter sewage device of a kind of graphene film according to claim 3, which is characterized in that the graphene film
(8) one layer of quartz sand layer (7) is respectively arranged in upper and lower, and the quartz sand layer (7) is fixed on down through sieve (6) on pipeline.
6. the continuous filter sewage device of a kind of graphene film according to any one of claim 3~5, feature exist
In the upper end vertex of sewage inlet (1) the connection triangular form pipeline, two lower end vertex of the triangular duct connect
A H pipe road is connect, two lower extreme points in H pipe road connect the water collect tank (14)；The graphene film (8) is set to described
H pipe road is located in the middle part of two upper half segment pipes above horizontal pipe；The pipeline of the triangle base and the dirt collecting tank
(17) it is connected by pipeline；The electromagnetic valve Pipe Control Unit includes：Positioned at triangular duct and H-shaped pipeline junction
Three-way magnetic valve door (4) and three-way magnetic valve door (5), be located at H pipe road horizontal pipe on a two three-way electromagnetic valve doors
(10), two three-way electromagnetic valve doors (11) of two, H pipe road lower extreme point and dirt collecting tank (17) connectivity part and two logical are located at and
Electromagnetic valve (12).
7. the continuous filter sewage device of a kind of graphene film according to claim 1, which is characterized in that the film process
System unit is two or more, is connected in parallel between sewage inlet (1) and water collect tank (14).
8. a kind of continuous filter sewage device filter sewage of graphene film using as described in any one of claim 1~7
Method, which is characterized in that include the following steps：
1) the positive filter sewage stage：It is dirty that setting electromagnetic valve Pipe Control Unit makes two membrane filtration pipelines be connected with parallel way
Water water inlet (1) and water collect tank (14) make sewage respectively enter two membrane filtration pipelines by sewage inlet (1) and carry out positive mistake
Filter, water after filter flow into water collect tank (14)；
2) backwash stage：Setting electromagnetic valve Pipe Control Unit make two film process pipelines connect in a series arrangement sewage into
The mouth of a river (1) and dirt collecting tank (17) make sewage just be filtered into the first membrane filtration pipeline, and water after filter is by the second membrane filtration pipeline
It is redirected back into, rinses the second filter membrane, the sewage after backwash flows into dirt collecting tank (17)；Electromagnetic valve Pipe Control Unit is set
So that two film process pipelines is connected sewage inlet (1) and dirt collecting tank (17) in a series arrangement, sewage is made to enter the second membrane filtration
Pipeline is just filtered, and water after filter is redirected back by the first membrane filtration pipeline, rinses the first filter membrane, the sewage stream after backwash
Enter dirt collecting tank (17)；
3) after setting time, the positive filtration stage described in step 1) is reentered.
9. the method for the continuous filter sewage device filter sewage of graphene film according to claim 8, which is characterized in that will
Sewage is promoted to sewage inlet after multiple backwash by elevator pump in step 2) the backwash stage dirt collecting tank (17)
(1) it focuses on.
10. the method for the continuous filter sewage device filter sewage of graphene film according to claim 9, which is characterized in that
Positive filtration time ranging from 2~5min described in step 1), the first filter membrane of backwash and the second filter membrane described in step 2)
Time range be respectively 10~30s.
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