CN107661699A - A kind of preparation technology of waste water deaminizing processing hydrophobic membrane - Google Patents

A kind of preparation technology of waste water deaminizing processing hydrophobic membrane Download PDF

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Publication number
CN107661699A
CN107661699A CN201710912762.2A CN201710912762A CN107661699A CN 107661699 A CN107661699 A CN 107661699A CN 201710912762 A CN201710912762 A CN 201710912762A CN 107661699 A CN107661699 A CN 107661699A
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CN
China
Prior art keywords
waste water
hydrophobic membrane
preparation technology
processing
film wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710912762.2A
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Chinese (zh)
Inventor
周景明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Kaihua Environmental Protection Technology Co Ltd
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Hefei Kaihua Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN201710912762.2A priority Critical patent/CN107661699A/en
Publication of CN107661699A publication Critical patent/CN107661699A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0013—Casting processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0095—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • 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
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/38—Hydrophobic membranes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a kind of preparation technology of waste water deaminizing processing hydrophobic membrane, high-purity PP is used as base-material, a small amount of PE melting mixings is added, film wire intensity can be significantly increased, and improves stretch-proof, the cutting performance of hydrophobic membrane；The hydrophobic membrane processed by this technique, membrane micropore surface spikes unobvious are more smooth, can reduce the fouling membrane phenomenon in denitrogenation of waste water processing；Technique is simple, and processing and cost of material are low, is adapted to large-scale industrial production.

Description

A kind of preparation technology of waste water deaminizing processing hydrophobic membrane
Technical field
The present invention relates to film processing technique field, specifically a kind of preparation technology of waste water deaminizing processing hydrophobic membrane.
Background technology
Now with chemical fertilizer, petrochemical industry, energy regeneration, mining refining ore deposit, Catalyst Production, coking industry, leather industry Etc. the growth that develops rapidly of industry, caused high ammonia-nitrogen wastewater is also as one of industry development restraining factors therefrom；It is reported that The marine site of China in 2001 occurs red tide and is up to 77 times, and ammonia nitrogen is one of major reason of pollution, particularly high-concentration ammonia nitrogenous wastewater Caused by pollution.Therefore, cost-effective control high density pollution also turns into the important topic of current environmental worker research, obtains The great attention of professional is arrived.
Generally forming for ammonia nitrogen waste water be due to caused by ammoniacal liquor and inorganic ammonia exist jointly, typically upper pH neutrality with On the main source of ammonia nitrogen in waste water be inorganic ammonia and the common effect of ammoniacal liquor, ammonia nitrogen masters of the pH in waste water under conditions of acidity Will be caused by inorganic ammonia.It is physical-chemical process, bioanalysis respectively that the processing method of high ammonia-nitrogen wastewater, which is divided into two major classes,.Wherein Physical-chemical process includes blow-off method, zeolite deamination method, reverse osmosis membrane separation technology, the MAP precipitation method, ultrasonic stripping processing ammonia nitrogen method And chemical oxidization method.Bioanalysis includes A/O, two sections of activated sludge processes, Strong oxdiative Aerobic biological process, short-cut nitrification and denitrification side Method etc..Either stripping or stripping+A/O or stripping+chemical precipitation ", all it be unable to do without the pretreatment work of with high investment, high operating cost Skill." stripping " one-time investment is too big and operating cost is too high, and " stripping " power consumption is too big and is extremely difficult to relatively low ammonia nitrogen and contains Amount.
Have at present and use the hydrophobic property of super-hydrophobic film in waste water deaminizing processing.The preparation method of super-hydrophobic film used A lot, including：Etching method, phase separation method, particle-filled method etc., and complicated manufacturing process and production cost strongly limit it is super Hydrophobic membrane extensive use in the production and living of reality.
The content of the invention
It is an object of the invention to provide a kind of preparation technology of waste water deaminizing processing hydrophobic membrane, to solve above-mentioned background The problem of being proposed in technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of preparation technology of waste water deaminizing processing hydrophobic membrane, comprises the following steps：
S1, it is 1 in mass ratio by high purity polypropylene raw material and polyethylene raw material:0.08 ratio is added in reactor, and Add diluent to stir, reactor heating melting, be incubated 2-4h；
S2, the casting solution in reactor is taken out, stir at least 30min, be incorporated into spinning machine, extract film wire out, stand cooling；
S3, film wire is wound using wrapping machine, and is sent into stretching case and carries out stress stretching, draft temperature is 75 DEG C, is drawn Power is 125MPa, and is passed through high-purity nitrogen into stretching case simultaneously, and final film wire surface forms a length of 0.1um of major axis, short axle A length of 0.02um elliptical aperture；
S4, the film product after stretching is sent into drying baker, dries 2-3h under the conditions of being 75 DEG C in temperature, film surface is put down Sliding processing.
As the further scheme of the present invention：The diluent is preferably caprolactam or caprolactam and tricresyl phosphate second The mixed diluent of ester composition.
As the further scheme of the present invention：The mass ratio of the diluent and high purity polypropylene raw material is 4:1-1.5.
As the further scheme of the present invention：The weight percent ranges of caprolactam are in described mixed diluent 60%~70%, the weight percentage of triethyl phosphate is 30%~40%.
As the further scheme of the present invention：The spinning machine jet size parameter is：Film wire external diameter is 300um, internal diameter For 200um.
As the further scheme of the present invention：Film wire stands the ambient parameter cooled down：20 DEG C of chilling temperature, cooling height 15m, cool time 45-60min.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention uses high-purity PP as base-material, adds a small amount of PE melting mixings, film wire intensity can be significantly increased, and improves The stretch-proof of hydrophobic membrane, cutting performance；
2nd, the hydrophobic membrane processed by this technique, membrane micropore surface spikes unobvious are more smooth, can reduce in denitrogenation of waste water Fouling membrane phenomenon in processing；
3rd, technique is simple, and processing and cost of material are low, is adapted to large-scale industrial production.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment Only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model that the present invention protects Enclose.
In the embodiment of the present invention, a kind of preparation technology of waste water deaminizing processing hydrophobic membrane, comprise the following steps：
S1, it is 1 in mass ratio by high purity polypropylene raw material and polyethylene raw material:0.08 ratio is added in reactor, and Add diluent to stir, reactor heating melting, be incubated 2-4h；
S2, the casting solution in reactor is taken out, stir at least 30min, be incorporated into spinning machine, extract film wire out, stand cooling；
S3, film wire is wound using wrapping machine, and is sent into stretching case and carries out stress stretching, draft temperature is 75 DEG C, is drawn Power is 125MPa, and is passed through high-purity nitrogen into stretching case simultaneously, and final film wire surface forms a length of 0.1um of major axis, short axle A length of 0.02um elliptical aperture；
S4, the film product after stretching is sent into drying baker, dries 2-3h under the conditions of being 75 DEG C in temperature, film surface is put down Sliding processing, membrane micropore surface is set to become smooth because of burr caused by drawing high.
The diluent is preferably caprolactam or the mixed diluent of caprolactam and triethyl phosphate composition.
The mass ratio of the diluent and high purity polypropylene raw material is 4:1-1.5.
The weight percent ranges of caprolactam are 60%~70% in described mixed diluent, triethyl phosphate Weight percentage is 30%~40%.
The spinning machine jet size parameter is：Film wire external diameter is 300um, internal diameter 200um.
Film wire stands the ambient parameter cooled down：20 DEG C of chilling temperature, cooling height 15m, cool time 45-60min.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims (6)

  1. A kind of 1. preparation technology of waste water deaminizing processing hydrophobic membrane, it is characterised in that：Comprise the following steps：
    S1, it is 1 in mass ratio by high purity polypropylene raw material and polyethylene raw material:0.08 ratio is added in reactor, and Add diluent to stir, reactor heating melting, be incubated 2-4h；
    S2, the casting solution in reactor is taken out, stir at least 30min, be incorporated into spinning machine, extract film wire out, stand cooling；
    S3, film wire is wound using wrapping machine, and is sent into stretching case and carries out stress stretching, draft temperature is 75 DEG C, is drawn Power is 125MPa, and is passed through high-purity nitrogen into stretching case simultaneously, and final film wire surface forms a length of 0.1um of major axis, short axle A length of 0.02um elliptical aperture；
    S4, the film product after stretching is sent into drying baker, dries 2-3h under the conditions of being 75 DEG C in temperature, film surface is put down Sliding processing.
  2. A kind of 2. preparation technology of waste water deaminizing processing hydrophobic membrane according to claim 1, it is characterised in that：It is described dilute It is preferably caprolactam or the mixed diluent of caprolactam and triethyl phosphate composition to release agent.
  3. A kind of 3. preparation technology of waste water deaminizing processing hydrophobic membrane according to claim 2, it is characterised in that：It is described dilute The mass ratio for releasing agent and high purity polypropylene raw material is 4:1-1.5.
  4. A kind of 4. preparation technology of waste water deaminizing processing hydrophobic membrane according to claim 3, it is characterised in that：Described The weight percent ranges of caprolactam are 60%~70% in mixed diluent, and the weight percentage of triethyl phosphate is 30%~40%.
  5. A kind of 5. preparation technology of waste water deaminizing processing hydrophobic membrane according to claim 1, it is characterised in that：It is described to take out Silk machine jet size parameter be：Film wire external diameter is 300um, internal diameter 200um.
  6. A kind of 6. preparation technology of waste water deaminizing processing hydrophobic membrane according to claim 1, it is characterised in that：Film wire is quiet The ambient parameter for putting cooling is：20 DEG C of chilling temperature, cooling height 15m, cool time 45-60min.
CN201710912762.2A 2017-09-30 2017-09-30 A kind of preparation technology of waste water deaminizing processing hydrophobic membrane Pending CN107661699A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114797486A (en) * 2022-04-13 2022-07-29 合肥凯华环保科技有限公司 Hydrophobic membrane capable of being hydrophobic again after being hydrophilic for wastewater deamination

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1621138A (en) * 2004-09-30 2005-06-01 浙江大学 Method for preparing polyvinylidene fluoride hollow fiber microporous film by microscopic phase separating method
CN102228804A (en) * 2011-04-15 2011-11-02 天津科技大学 Method for preparing hydrophobic microporous membrane and membrane prepared by method
JP2012115835A (en) * 2010-08-27 2012-06-21 Toyobo Co Ltd Hollow fiber type reverse osmosis membrane
CN102806022A (en) * 2012-09-06 2012-12-05 天津工业大学 Method for preparing polyacrylonitrile (PAN)-base microporous membrane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1621138A (en) * 2004-09-30 2005-06-01 浙江大学 Method for preparing polyvinylidene fluoride hollow fiber microporous film by microscopic phase separating method
JP2012115835A (en) * 2010-08-27 2012-06-21 Toyobo Co Ltd Hollow fiber type reverse osmosis membrane
CN102228804A (en) * 2011-04-15 2011-11-02 天津科技大学 Method for preparing hydrophobic microporous membrane and membrane prepared by method
CN102806022A (en) * 2012-09-06 2012-12-05 天津工业大学 Method for preparing polyacrylonitrile (PAN)-base microporous membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114797486A (en) * 2022-04-13 2022-07-29 合肥凯华环保科技有限公司 Hydrophobic membrane capable of being hydrophobic again after being hydrophilic for wastewater deamination

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Application publication date: 20180206