CN112973793A - Photocatalysis nanofiber membrane and oily sewage treatment equipment used by same - Google Patents

Photocatalysis nanofiber membrane and oily sewage treatment equipment used by same Download PDF

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CN112973793A
CN112973793A CN202110233179.5A CN202110233179A CN112973793A CN 112973793 A CN112973793 A CN 112973793A CN 202110233179 A CN202110233179 A CN 202110233179A CN 112973793 A CN112973793 A CN 112973793A
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face
supporting
positioning
limiting
photocatalytic
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CN112973793B (en
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巫若子
李红章
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Jiangmen Polytechnic
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Jiangmen Polytechnic
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39—Photocatalytic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/58—Fabrics or filaments
    • B01J35/59—Membranes
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/103—Agents inhibiting growth of microorganisms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/10—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material by decomposition of organic substances
    • 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
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • 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
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/004—Seals, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Physical Water Treatments (AREA)

Abstract

The invention relates to the technical field of sewage treatment equipment, in particular to a photocatalytic nanofiber membrane and oily sewage treatment equipment used by the same, wherein the photocatalytic nanofiber membrane comprises the following raw materials: the raw materials of the photocatalytic nanofiber membrane comprise, by weight, 5-8 parts of polyoxazine amide, 60-80 parts of dichloromethane, 0.3-0.8 part of chitosan, 0.1-0.3 part of methyltrichlorosilane, 0.2-0.5 part of sodium dodecyl sulfate and 0.04-0.09 part of trichloroacetic acid; the invention introduces the polyoxazine into dichloromethane, stirs until completely dissolving into spinning solution, then adds chitosan, methyl trichlorosilane, sodium dodecyl sulfate and trichloroacetic acid into the spinning solution, mixes and places in high-voltage electrostatic spinning equipment, and splits into fibers with nanometer diameter under the action of electric field and attaches to a receiving screen, and forms a compact nanometer film-shaped structure, greatly improves the adsorption and treatment capacity of impurities in polluted water, simultaneously, the methyl trichlorosilane can endow the fiber film with low surface energy, so that the fiber film has excellent super-hydrophobic property and large contact angle, and the oil removal rate is high when the invention is used for treating oily sewage.

Description

Photocatalysis nanofiber membrane and oily sewage treatment equipment used by same
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a photocatalytic nanofiber membrane and oily sewage treatment equipment used by the photocatalytic nanofiber membrane.
Background
According to the Chinese patent No. CN201820240286.4, the utility model provides a domestic sewage treatment device based on a nanofiber membrane, which comprises a sedimentation tank, an oil filtering tank and a sterilization tank, wherein a first filter screen, a second filter screen and a third filter screen are sequentially arranged in the sedimentation tank from top to bottom; the sterilizing tank shell is provided with the ultraviolet lamp and the electric heater, the utility model can rapidly separate sewage and sundries, is high-efficient, economical, practical and reliable, is suitable for small ships,
the invention discloses a photocatalytic fiber sewage treatment device according to Chinese patent No. CN202010111409.6, which comprises a treatment tank and photocatalytic fibers arranged in the treatment tank, wherein the bottom and/or the side wall of the treatment tank is/are provided with an ultraviolet lamp tube, the treatment tank is internally provided with at least two groups of matched driving components and a plurality of rod bodies fixed with the driving components, the at least two groups of driving components can drive the rod bodies to move relatively, and the photocatalytic fibers are wound from the rod bodies on one group of driving components to the rod bodies on the other group of driving components in a reciprocating and staggered manner; the photocatalytic fiber at least comprises a fiber-forming high polymer and nano titanium dioxide particles mixed into the fiber-forming high polymer, the photocatalytic fiber arranged in the treatment tank is used for treating sewage, the recovery is simple, the problem of pollution caused by residual catalyst solid is solved, meanwhile, the exposure rate of the titanium dioxide particles can be improved by stretching the photocatalytic fiber, the sewage can be continuously treated by arranging the photocatalytic fiber once, and the catalytic reaction can be controlled to a certain degree.
However, when the existing photocatalytic nanofiber membrane sewage treatment equipment is used for treating sewage containing oil stains, the catalytic treatment efficiency is insufficient, so that a photocatalytic nanofiber membrane and the oily sewage treatment equipment used by the photocatalytic nanofiber membrane are needed to solve the problems in the background art.
Disclosure of Invention
The invention aims to provide a photocatalytic nanofiber membrane and oily sewage treatment equipment used by the photocatalytic nanofiber membrane, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the photocatalytic nanofiber membrane comprises, by weight, 5-8 parts of polyoxazine, 60-80 parts of dichloromethane, 0.3-0.8 part of chitosan, 0.1-0.3 part of methyltrichlorosilane, 0.2-0.5 part of sodium dodecyl sulfate and 0.04-0.09 part of trichloroacetic acid.
The invention also provides a preparation method of the photocatalytic nanofiber membrane, which comprises the following steps:
s1, introducing the polyoxazine amide in parts by mass into dichloromethane, stirring at room temperature until the polyoxazine amide is completely dissolved, and keeping the solution at 5-8 ℃ for 10-12 hours to cure the polyoxazine amide so that a high molecular chain of the polyoxazine amide can be fully spread in the solution to form spinning solution with good spinnability;
s2, adding chitosan, methyl trichlorosilane, sodium dodecyl sulfate and trichloroacetic acid into the spinning solution, and then stirring for 3-5 min;
s3, placing the high-voltage electrostatic spinning equipment in a closed system, removing oxygen in the closed system by magnesium powder in advance, adding the spinning solution obtained in the step S2 into a tape spinning head, starting spinning, splitting the spinning solution into fibers with nanometer diameters under the action of an electric field, attaching the fibers to a receiving screen, quickly volatilizing dichloromethane in the spinning solution, gradually dehydrating and polycondensing the polyazine amide under the action of high temperature to convert the polyazine amide into carbon nitride, and forming a compact nano film-shaped structure;
and S4, spinning for 10-15 min, slowly reducing the surface temperature of the receiving screen at the speed of 2-5 ℃/min to anneal the carbon nitride fiber, and stripping the fiber film from the surface of the receiving screen when the temperature of the receiving screen is reduced to room temperature to obtain the photocatalytic nanofiber film.
Based on the process, the invention also provides oily sewage treatment equipment of the photocatalytic nanofiber membrane, which comprises a supporting mechanism, a positioning and catalyzing mechanism, a sealing limiting mechanism, a transmission mechanism, a connecting mechanism, a guide mechanism, a fixed motor and a limiting clamping gear;
the inner end face of the supporting mechanism is rotatably clamped with a transmission mechanism for supporting, positioning catalysis mechanisms for catalyzing are fixedly clamped on the outer end face of the transmission mechanism at uniform equal intervals, a sealing limiting mechanism for limiting is fixedly installed on the upper end face of the supporting mechanism, a water inlet pipe for guiding is fixedly installed at a position, close to the outside, of the upper end face of the sealing limiting mechanism, a connecting mechanism for connecting is fixedly installed at the center of the lower end face of the supporting mechanism, a fixed motor for driving is fixedly installed at a position, close to the center of the lower end face of the connecting mechanism, the inner end face of the connecting mechanism is symmetrically rotatably clamped with a guide mechanism for guiding, and limiting clamping gears for driving are symmetrically rotatably clamped at positions, close to the guide mechanism, of the inner end face of the connecting mechanism;
the supporting mechanism comprises a supporting reaction cylinder, a positioning water pipe, a limiting clamping groove and a connecting supporting leg;
a positioning water pipe for flow guiding is fixedly arranged on the side end face of the supporting reaction cylinder close to the bottom, four groups of connecting supporting legs for supporting are uniformly and equidistantly fixedly connected to the lower end face of the supporting reaction cylinder, and a limiting clamping groove for connection is formed in the center of the bottom of the inner end face of the supporting reaction cylinder;
the positioning catalysis mechanism comprises a fixed support frame, a first catalysis lamp, an activated carbon filter plate, a photocatalysis nanofiber membrane and a nano catalysis plate;
the outer end face of the fixed supporting frame is uniformly, equidistantly and symmetrically and fixedly connected with five groups of first catalytic lamps for lighting, a photocatalytic nanofiber membrane for catalysis is fixedly arranged at the center of the inner end face of the fixed supporting frame, a nano catalytic plate for flow guiding is symmetrically and fixedly connected to the position, close to the photocatalytic nanofiber membrane, of the inner end face of the fixed supporting frame, and an active carbon filter plate for adsorption is symmetrically and fixedly connected to the outer end face of the fixed supporting frame;
the transmission mechanism comprises a supporting limit shaft, a sealing clamping disc, a positioning support plate and an installation clamping groove;
four groups of mounting clamping grooves for connection are uniformly and equidistantly formed in the outer end face of the supporting limiting shaft, a sealing clamping disc for limiting is fixedly connected to the center of the bottom end face of the supporting limiting shaft, and a positioning support plate for guiding is fixedly connected to the center of the lower end face of the sealing clamping disc;
the connecting mechanism comprises a positioning connecting seat, a supporting clamping plate, a motor clamping groove, a rotating shaft clamping groove, a positioning insertion groove and an installation bottom plate;
the lower end face of the positioning connecting seat is symmetrically and fixedly connected with an installation bottom plate for installation, a supporting clamping plate for supporting is fixedly arranged at the center of the upper end face of the positioning connecting seat, a motor clamping groove for limiting is formed in the center of the upper end face of the supporting clamping plate, positioning insertion grooves for connection are symmetrically formed in the upper end face of the positioning connecting seat, and rotating shaft clamping grooves are symmetrically formed in the upper end face of the positioning connecting seat, close to the inside of the positioning insertion grooves;
the guide mechanism comprises a connecting transmission gear, a turnover clamping plate, a guide arc plate, a fixed inserting shaft, a supporting guide plate and a limiting fulcrum shaft;
connect drive gear's lower terminal surface center department fixed mounting have the spacing fulcrum shaft that is used for supporting, and be located the side end face center department fixed mounting of spacing fulcrum shaft has the upset joint board that is used for spacingly, the side end face end fixedly connected with of upset joint board department is used for the direction arc of joint, the bottom end face center department fixedly connected with of spacing fulcrum shaft is used for spacing support deflector, and is located the fixed spiale of fixedly connected with of up end center department of supporting the deflector.
Preferably; the positioning insertion groove is matched with the limiting support shaft, and the rotating shaft clamping groove is matched with the limiting clamping gear.
Preferably; the connecting mechanism is matched with the limiting support shaft through the positioning insertion groove and then is rotationally clamped on the lower end face of the connecting mechanism.
Preferably; the limiting clamping gear is connected with the lower end face of the connecting mechanism in a rotating mode through the rotating shaft clamping groove in a rotating mode.
Preferably; four groups of rotating shaft grooves are formed in the outer end face of the positioning support plate at equal intervals, and the rotating shaft grooves are connected with the guide arc-shaped plates in a sliding clamping mode in a matched mode.
Preferably; four groups of limiting sliding grooves are formed in the outer end face of the positioning support plate at equal intervals, and the limiting sliding grooves are connected with the fixed inserting shaft in a sliding clamping mode in an adaptive mode.
Preferably; two sets of intermeshing is connected between the spacing joint gear, just spacing joint gear carries out meshing rotation through connecting drive gear and guiding mechanism and is connected.
Preferably; the inner end face of the fixed support frame is close to the position between the photocatalytic nanofiber membrane and the nano catalytic plate, and a second catalytic lamp for lighting is fixedly connected at equal intervals.
Compared with the prior art, the invention has the beneficial effects that:
according to the photocatalytic nanofiber membrane and the oily sewage treatment equipment using the photocatalytic nanofiber membrane, the transmission mechanism and the guide mechanism are arranged, when catalysis is carried out, the two groups of limiting clamping gears can rotate under the driving of the fixed motor, so that sufficient power is provided for the two groups of guide mechanisms to rotate, meanwhile, the two groups of guide mechanisms can be alternately and intermittently in poking connection with the transmission mechanism, the transmission mechanism can circularly rotate forwards and backwards in the supporting mechanism, the positioning catalysis mechanism can be driven to catalyze various substances in sewage to the maximum degree, and the subsequent sewage treatment efficiency is improved.
The photocatalytic nanofiber membrane and the oily sewage treatment equipment using the same disclosed by the invention have the advantages that through the arrangement of the positioning catalysis mechanism and the connecting mechanism, the rotating shaft clamping groove and the positioning insertion groove in the connecting mechanism can provide an enough supporting base for the guide mechanism and the limiting clamping gear, so that the transmission stability between the subsequent guide mechanism and the limiting clamping gear is improved, meanwhile, the activated carbon filter plate in the positioning catalysis mechanism can adsorb various toxic substances, the photocatalytic nanofiber membrane can be matched with a second catalytic lamp, the catalysis efficiency on various harmful substances is improved to the maximum extent, the harmful substances in sewage are removed in a multi-level deep manner, and the subsequent sewage treatment efficiency is effectively improved.
Thirdly, the invention discloses a photocatalysis nano fiber membrane and oil-containing sewage treatment equipment used by the same, which are characterized in that the polyazine amide is led into dichloromethane and stirred until the polyazine amide is completely dissolved into spinning solution, then adding chitosan, methyl trichlorosilane, lauryl sodium sulfate and trichloroacetic acid into the spinning solution, mixing and placing in high-voltage electrostatic spinning equipment, and is split into fibers with the diameter of nanometer level under the action of an electric field and is attached to a receiving screen, the poly-oxazine amide is gradually dehydrated and polycondensed into carbon nitride under the action of high temperature, and a compact nano-film structure is formed, so that the adsorption and treatment capacity of impurities in the polluted water are greatly improved, meanwhile, the methyl trichlorosilane can endow the fiber membrane with low surface energy, so that the fiber membrane has excellent super-hydrophobic property and large contact angle, the oil removal rate is high when the fiber membrane is used for treating oily sewage, and the chitosan can kill bacteria in the sewage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a process for preparing a photocatalytic nanofiber membrane according to the present invention;
FIG. 2 is an exploded view of a body of the present invention;
FIG. 3 is an assembled view of the main body of the present invention;
FIG. 4 is a front view of the body of the present invention;
FIG. 5 is a cross-sectional view of the main body of the present invention taken along the main body elevation A-A;
FIG. 6 is an enlarged view of a portion of the invention at I;
FIG. 7 is a schematic structural view of a support mechanism according to the present invention;
FIG. 8 is a schematic view of the positioning catalytic mechanism of the present invention;
FIG. 9 is a schematic structural view of the coupling mechanism of the present invention;
FIG. 10 is a schematic view of the structure of the guide mechanism of the present invention;
FIG. 11 is a schematic view of the structure of the guide mechanism of the present invention;
fig. 12 is a schematic structural view of a positioning catalytic mechanism according to a second embodiment of the present invention.
In the figure: 1-supporting mechanism, 2-positioning catalytic mechanism, 3-sealing limiting mechanism, 4-transmission mechanism, 5-connecting mechanism, 6-guiding mechanism, 7-fixed motor, 8-limiting clamping gear, 11-supporting reaction cylinder, 12-positioning water pipe, 13-limiting clamping groove, 14-connecting supporting leg, 21-fixed supporting frame, 22-first catalytic lamp, 23-active carbon filter plate, 24-photocatalytic nanofiber membrane, 25-nano catalytic plate, 26-second catalytic lamp, 41-supporting limiting shaft, 42-sealing clamping disk, 43-positioning supporting plate, 44-mounting clamping groove, 51-positioning connecting seat, 52-supporting clamping plate, 53-motor clamping groove, 54-rotating shaft clamping groove, 55-a positioning insertion groove, 56-a mounting bottom plate, 61-a connecting transmission gear, 62-a turnover clamping plate, 63-a guide arc plate, 64-a fixed insertion shaft, 65-a supporting guide plate and 66-a limiting fulcrum shaft.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is further described below with reference to the accompanying drawings.
Example 1
The photocatalytic nanofiber membrane comprises, by weight, 7 parts of polyazine amide, 75 parts of dichloromethane, 0.4 part of chitosan, 0.2 part of methyltrichlorosilane, 0.3 part of sodium dodecyl sulfate and 0.05 part of trichloroacetic acid.
A method for preparing a photocatalytic nanofiber membrane, as shown in fig. 1, comprises the following steps:
s1, introducing the polyazine amide in parts by mass into dichloromethane, stirring at room temperature until the polyazine amide is completely dissolved, and keeping at 8 ℃ for 12 hours to cure the polyazine amide so that a high molecular chain thereof is fully spread in the solution to form a spinning solution with good spinnability;
s2, adding chitosan, methyl trichlorosilane, sodium dodecyl sulfate and trichloroacetic acid into the spinning solution, and then stirring for 5 min;
s3, placing high-voltage electrostatic spinning equipment in a closed system, adding the spinning solution obtained in the step S2 into a spinning head with a spinning head, starting spinning, splitting the spinning solution into fibers with nanometer diameters under the action of an electric field, attaching the fibers to a receiving screen, quickly volatilizing dichloromethane in the spinning solution, gradually dehydrating and polycondensing the polyazine amide under the action of high temperature to convert the polyazine amide into carbon nitride, and forming a compact nano film-shaped structure;
s4, spinning for 15min, slowly reducing the surface temperature of the receiving screen at the speed of 5 ℃/min to anneal the carbon nitride fiber, and stripping the fiber film from the surface of the receiving screen when the receiving screen is cooled to room temperature to obtain the photocatalytic nanofiber film.
As shown in fig. 2, 3, 4, 5 and 6, a first embodiment of the present invention: a photocatalysis nanofiber membrane oily sewage treatment device comprises a supporting mechanism 1, a positioning catalysis mechanism 2, a sealing limiting mechanism 3, a transmission mechanism 4, a connecting mechanism 5, a guide mechanism 6, a fixed motor 7 and a limiting clamping gear 8;
the inner end face of the supporting mechanism 1 is rotatably clamped with a transmission mechanism 4 for supporting, positioning catalysis mechanisms 2 for catalyzing are fixedly clamped on the outer end face of the transmission mechanism 4 at equal intervals, the upper end face of the supporting mechanism 1 is fixedly provided with a sealing limiting mechanism 3 for limiting, a water inlet pipe for guiding is fixedly arranged on the upper end face of the sealing limiting mechanism 3 close to the outer part, the center of the lower end face of the supporting mechanism 1 is fixedly provided with a connecting mechanism 5 for connecting, a fixed motor 7 for driving is fixedly arranged on the center of the lower end face of the connecting mechanism 5, the inner end face of the connecting mechanism 5 is symmetrically rotatably clamped with a guide mechanism 6 for guiding, and the inner end face of the connecting mechanism 5 close to the guide mechanism 6 is symmetrically rotatably clamped with a limiting clamping gear 8 for driving;
as shown in fig. 7, the supporting mechanism 1 includes a supporting reaction cylinder 11, a positioning water pipe 12, a limiting clamping groove 13 and a connecting supporting leg 14;
a positioning water pipe 12 for diversion is fixedly arranged on the side end surface of the supporting reaction cylinder 11 close to the bottom, four groups of connecting support legs 14 for support are uniformly and equidistantly fixedly connected to the lower end surface of the supporting reaction cylinder 11, and a limiting clamping groove 13 for connection is formed in the center of the bottom of the inner end surface of the supporting reaction cylinder 11;
as shown in fig. 8, the positioning catalytic mechanism 2 includes a fixed support frame 21, a first catalytic lamp 22, an activated carbon filter plate 23, a photocatalytic nanofiber membrane 24, and a nanocatalysis plate 25;
five groups of first catalytic lamps 22 for illumination are uniformly, equidistantly, symmetrically and fixedly connected to the outer end face of the fixed support frame 21, a photocatalytic nanofiber membrane 24 for catalysis is fixedly installed at the center of the inner end face of the fixed support frame 21, a nano catalytic plate 25 for flow guiding is symmetrically and fixedly connected to the inner end face of the fixed support frame 21 close to the photocatalytic nanofiber membrane 24, and an activated carbon filter plate 23 for adsorption is symmetrically and fixedly connected to the outer end face of the fixed support frame 21;
as shown in fig. 9, the transmission mechanism 4 includes a support limit shaft 41, a seal chuck 42, a positioning support plate 43 and a mounting chuck groove 44;
four groups of mounting clamping grooves 44 for connection are uniformly and equidistantly formed in the outer end face of the supporting limiting shaft 41, a sealing clamping disc 42 for limiting is fixedly connected to the center of the bottom end face of the supporting limiting shaft 41, and a positioning support plate 43 for guiding is fixedly connected to the center of the lower end face of the sealing clamping disc 42;
as shown in fig. 10, the connecting mechanism 5 includes a positioning connecting seat 51, a supporting clamping plate 52, a motor clamping groove 53, a rotating shaft clamping groove 54, a positioning insertion groove 55 and a mounting base plate 56;
the lower end surface of the positioning connecting seat 51 is symmetrically and fixedly connected with an installation bottom plate 56 for installation, a supporting clamping plate 52 for supporting is fixedly arranged at the center of the upper end surface of the positioning connecting seat 51, a motor clamping groove 53 for limiting is formed in the center of the upper end surface of the supporting clamping plate 52, positioning insertion grooves 55 for connection are symmetrically formed in the upper end surface of the positioning connecting seat 51, and rotating shaft clamping grooves 54 are symmetrically formed in the upper end surface of the positioning connecting seat 51 close to the inside of the positioning insertion grooves 55;
as shown in fig. 11, the guide mechanism 6 includes a connecting transmission gear 61, a flip click plate 62, a guide arc plate 63, a fixed insertion shaft 64, a support guide plate 65, and a limit fulcrum 66;
a limiting fulcrum 66 for supporting is fixedly installed at the center of the lower end face of the connecting transmission gear 61, a turnover clamping plate 62 for limiting is fixedly installed at the center of the side end face of the limiting fulcrum 66, a guide arc-shaped plate 63 for clamping is fixedly connected at the end of the side end face of the turnover clamping plate 62, a supporting guide plate 65 for limiting is fixedly connected at the center of the bottom end face of the limiting fulcrum 66, and a fixed plug-in shaft 64 is fixedly connected at the center of the upper end face of the supporting guide plate 65.
As shown in fig. 9, 10 and 11, the positioning insertion groove 55 is adapted to the limiting support shaft 66, the rotating shaft clamping groove 54 is adapted to the limiting clamping gear 8, the connecting mechanism 5 is adapted to the limiting support shaft 66 through the positioning insertion groove 55 and then is rotatably clamped on the lower end surface of the connecting mechanism 5, the limiting clamping gear 8 is further rotatably clamped on the lower end surface of the connecting mechanism 5 through the rotating shaft clamping groove 54, four sets of rotating shaft grooves are uniformly and equidistantly formed in the outer end surface of the positioning support plate 43 and are in sliding clamping fit with the guiding arc-shaped plate 63, four sets of limiting sliding grooves are uniformly and equidistantly formed in the outer end surface of the positioning support plate 43 and are in sliding clamping fit with the fixed insertion shaft 64, two sets of limiting clamping gears 8 are mutually engaged and connected, and the limiting clamping gear 8 is engaged and rotatably connected with the guiding mechanism 6 through the connecting transmission gear 61.
In the embodiment, when the device is used, a user can connect the water inlet pipe with an external sewage supply mechanism, then the external sewage supply mechanism supplies sewage, at this time, the user can start the fixing motor 7 through the external control mechanism, when the fixing motor 7 rotates, the fixing motor can drive one group of the limiting clamping gears 8 to rotate, so that the two groups of the limiting clamping gears 8 in a meshed state can simultaneously rotate, meanwhile, when the limiting clamping gears 8 rotate, the limiting clamping gears 8 can drive the guide mechanisms 6 to rotate through the connecting transmission gear 61, because the two groups of the guide mechanisms 6 are opposite in direction, so that when one group of the guide mechanisms 6 rotates, the other group of the guide mechanisms 6 is positioned on the other side surface, when the guide mechanisms 6 rotate, the fixing clamping shaft 64 can firstly slide and be clamped in the limiting sliding groove in the positioning support plate 43, then the fixed inserting shaft 64 can drive the positioning support plate 43 to rotate, so that the positioning support plate 43 can drive four groups of positioning catalysis mechanisms 2 to rotate in the supporting mechanism 1 through the supporting limit shaft 41, meanwhile, the activated carbon filter plate 23 in the positioning catalysis mechanisms 2 can adsorb and remove toxic substances, meanwhile, the combination reaction of the first catalysis lamp 22 and the photocatalysis nanofiber membrane 24 can rapidly catalyze the oily sewage, when the fixed inserting shaft 64 drives the positioning support plate 43 to rotate to a separation position, the guide arc-shaped plate 63 can be clamped in the rotating shaft groove outside the positioning support plate 43 in a sliding way to prevent the positioning support plate 43 from rotating, and when the guide arc-shaped plate 63 is separated from the rotating shaft groove, the other group of fixed inserting shaft 64 can be directly clamped in the limiting sliding groove to drive the positioning catalysis mechanisms 2 to rotate reversely, so that the internal sewage is overturned and guided, and the sewage is further treated.
Example 2
On the basis of example 1, as shown in fig. 12, a second catalytic lamp 26 for illumination is fixedly connected to the inner end surface of the fixed support frame 21 near the photo catalytic nanofiber membrane 24 and the nano catalytic plate 25 at a uniform and equidistant distance.
This embodiment is when using, when carrying out catalytic treatment to containing sewage, because second catalysis lamps and lanterns 26 establish between photocatalysis nanofiber membrane 24 and nanometer catalysis board 25, and then make the illumination degree of second catalysis lamps and lanterns 26 can furthest's improvement photocatalysis nanofiber membrane 24 to improve follow-up catalytic efficiency of going on.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The photocatalytic nanofiber membrane is characterized by comprising, by weight, 5-8 parts of polyoxazine, 60-80 parts of dichloromethane, 0.3-0.8 part of chitosan, 0.1-0.3 part of methyltrichlorosilane, 0.2-0.5 part of sodium dodecyl sulfate and 0.04-0.09 part of trichloroacetic acid.
2. The method for preparing the photocatalytic nanofiber membrane as claimed in claim 1, comprising the following steps:
s1, introducing the polyoxazine amide in parts by mass into dichloromethane, stirring at room temperature until the polyoxazine amide is completely dissolved, and keeping the solution at 5-8 ℃ for 10-12 hours to cure the polyoxazine amide so that a high molecular chain of the polyoxazine amide can be fully spread in the solution to form spinning solution with good spinnability;
s2, adding chitosan, methyl trichlorosilane, sodium dodecyl sulfate and trichloroacetic acid into the spinning solution, and then stirring for 3-5 min;
s3, placing the high-voltage electrostatic spinning equipment in a closed system, removing oxygen in the closed system by magnesium powder in advance, adding the spinning solution obtained in the step S2 into a tape spinning head, starting spinning, splitting the spinning solution into fibers with nanometer diameters under the action of an electric field, attaching the fibers to a receiving screen, quickly volatilizing dichloromethane in the spinning solution, gradually dehydrating and polycondensing the polyazine amide under the action of high temperature to convert the polyazine amide into carbon nitride, and forming a compact nano film-shaped structure;
and S4, spinning for 10-15 min, slowly reducing the surface temperature of the receiving screen at the speed of 2-5 ℃/min to anneal the carbon nitride fiber, and stripping the fiber film from the surface of the receiving screen when the temperature of the receiving screen is reduced to room temperature to obtain the photocatalytic nanofiber film.
3. The oily sewage treatment device of the photocatalytic nanofiber membrane as set forth in any one of claims 1 to 2, wherein: comprises a supporting mechanism (1), a positioning catalysis mechanism (2), a sealing limit mechanism (3), a transmission mechanism (4), a connecting mechanism (5), a guide mechanism (6), a fixed motor (7) and a limit clamping gear (8); the inner end face of the supporting mechanism (1) rotates the joint to be provided with the transmission mechanism (4) for supporting, and is located the even equidistance fixed joint of the outer end face of the transmission mechanism (4) is provided with the positioning catalysis mechanism (2) for catalyzing, the upper end face fixed mounting of the supporting mechanism (1) is provided with the sealing limiting mechanism (3) for limiting, and is located the upper end face of the sealing limiting mechanism (3) is close to the outer fixed mounting of the outer part and is provided with the water inlet pipe for guiding, the lower end face center of the supporting mechanism (1) is provided with the connecting mechanism (5) for connecting, and is located the lower end face center of the connecting mechanism (5) is provided with the fixed motor (7) for driving, the inner end face of the connecting mechanism (5) rotates the joint symmetrically to be provided with the guide mechanism (6) for guiding, and is located the inner end face of the connecting mechanism (5) is close to the guide mechanism (6) and rotates the joint symmetrically to A wheel (8); the supporting mechanism (1) comprises a supporting reaction cylinder (11), a positioning water pipe (12), a limiting clamping groove (13) and connecting supporting legs (14); a positioning water pipe (12) for guiding flow is fixedly arranged on the side end surface of the supporting reaction cylinder (11) close to the bottom, four groups of connecting supporting legs (14) for supporting are uniformly and equidistantly fixedly connected to the lower end surface of the supporting reaction cylinder (11), and a limiting clamping groove (13) for connection is formed in the center of the bottom of the inner end surface of the supporting reaction cylinder (11); the positioning catalysis mechanism (2) comprises a fixed support frame (21), a first catalysis lamp (22), an activated carbon filter plate (23), a photocatalysis nanofiber membrane (24) and a nanometer catalysis plate (25); five groups of first catalytic lamps (22) for lighting are uniformly, equidistantly and symmetrically and fixedly connected to the outer end face of the fixed support frame (21), a photocatalytic nanofiber membrane (24) for catalysis is fixedly arranged at the center of the inner end face of the fixed support frame (21), a nano catalytic plate (25) for flow guiding is symmetrically and fixedly connected to the position, close to the photocatalytic nanofiber membrane (24), of the inner end face of the fixed support frame (21), and an active carbon filter plate (23) for adsorption is symmetrically and fixedly connected to the outer end face of the fixed support frame (21); the transmission mechanism (4) comprises a support limiting shaft (41), a sealing clamping disc (42), a positioning support plate (43) and an installation clamping groove (44); four groups of mounting clamping grooves (44) for connection are uniformly and equidistantly formed in the outer end face of the supporting and limiting shaft (41), a sealing clamping disc (42) for limiting is fixedly connected to the center of the bottom end face of the supporting and limiting shaft (41), and a positioning support plate (43) for guiding is fixedly connected to the center of the lower end face of the sealing clamping disc (42); the connecting mechanism (5) comprises a positioning connecting seat (51), a supporting clamping plate (52), a motor clamping groove (53), a rotating shaft clamping groove (54), a positioning insertion groove (55) and an installation bottom plate (56); the lower end face of the positioning connecting seat (51) is symmetrically and fixedly connected with an installation bottom plate (56) for installation, a supporting clamping plate (52) for supporting is fixedly arranged at the center of the upper end face of the positioning connecting seat (51), a motor clamping groove (53) for limiting is formed in the center of the upper end face of the supporting clamping plate (52), positioning insertion grooves (55) for connection are symmetrically formed in the upper end face of the positioning connecting seat (51), and rotating shaft clamping grooves (54) are symmetrically formed in the upper end face of the positioning connecting seat (51) close to the inside of the positioning insertion grooves (55); the guide mechanism (6) comprises a connecting transmission gear (61), a turnover clamping plate (62), a guide arc-shaped plate (63), a fixed inserting shaft (64), a supporting guide plate (65) and a limiting fulcrum shaft (66); the utility model discloses a fixed connection of connecting transmission gear (61), connecting the lower terminal surface center of drive gear (61) and locating fixed mounting has spacing fulcrum shaft (66) that is used for the support, and is located the side end face center of spacing fulcrum shaft (66) locates fixed mounting to be used for spacing upset joint board (62), the side end face end fixedly connected with of upset joint board (62) is used for direction arc (63) of joint, the bottom end face center department fixedly connected with of spacing fulcrum shaft (66) is used for spacing support deflector (65), and is located the up end center department fixedly connected with of support deflector (65) fixedly plugs in hub (64).
4. The oily sewage treatment device of the photocatalytic nanofiber membrane as set forth in claim 3, wherein: the positioning insertion groove (55) is matched with the limiting support shaft (66), and the rotating shaft clamping groove (54) is matched with the limiting clamping gear (8).
5. The oily sewage treatment device of the photocatalytic nanofiber membrane as set forth in claim 4, wherein: the connecting mechanism (5) is matched with the limiting fulcrum shaft (66) through the positioning insertion groove (55) and then is rotationally clamped on the lower end face of the connecting mechanism (5).
6. The oily sewage treatment device of the photocatalytic nanofiber membrane as claimed in claim 5, wherein: the limiting clamping gear (8) is rotatably clamped on the lower end face of the connecting mechanism (5) through a rotating shaft clamping groove (54).
7. The oily sewage treatment device of the photocatalytic nanofiber membrane as claimed in claim 6, wherein: four groups of rotating shaft grooves are formed in the outer end face of the positioning support plate (43) at equal intervals, and the rotating shaft grooves are in sliding clamping connection with the guide arc-shaped plate (63) in a matched mode.
8. The oily sewage treatment device of the photocatalytic nanofiber membrane as claimed in claim 7, wherein: four groups of limiting sliding grooves are uniformly and equidistantly formed in the outer end face of the positioning support plate (43), and the limiting sliding grooves are in sliding clamping connection with the fixed plug-in shaft (64) in a matched mode.
9. The oily sewage treatment device of the photocatalytic nanofiber membrane as claimed in claim 8, wherein: two sets of intermeshing is connected between spacing joint gear (8), just spacing joint gear (8) carry out meshing rotation through connecting drive gear (61) and guiding mechanism (6) and are connected.
10. The oily sewage treatment device of the photocatalytic nanofiber membrane as set forth in claim 3, wherein: the inner end face of the fixed supporting frame (21) is close to a second catalytic lamp (26) which is fixedly connected between the photocatalysis nanofiber membrane (24) and the nanometer catalytic plate (25) at equal intervals and is used for lighting.
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