CN104445581B - A kind of magnetic fillers based on waste plastics and preparation method thereof - Google Patents
A kind of magnetic fillers based on waste plastics and preparation method thereof Download PDFInfo
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- CN104445581B CN104445581B CN201410682186.3A CN201410682186A CN104445581B CN 104445581 B CN104445581 B CN 104445581B CN 201410682186 A CN201410682186 A CN 201410682186A CN 104445581 B CN104445581 B CN 104445581B
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- magnetic
- strip shape
- shape body
- waste plastics
- magnetic strip
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/101—Arranged-type packing, e.g. stacks, arrays
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/109—Characterized by the shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a kind of magnetic fillers based on waste plastics and preparation method thereof, by being sequentially prepared plastic substrate, magnetic ferrite powder and magnetic strip shape body, finally give the magnetic fillers based on waste plastics. This magnetic fillers is made up of plastic substrate and magnetic strip shape body two parts; Described plastic substrate is the waste plastics in solid waste; Described magnetic strip shape body is made up of waste plastics film coated magnetic ferrite powder; Described magnetic strip shape body is interspersed on described plastic substrate in institute's apertured, and described magnetic strip shape body two ends are crossed hole site and are equipped with knot, and described knot is more than the size in hole. Present invention achieves the recycling of solid waste; Decrease environmental pollution, provide a kind of new thinking for waste plastics and processing of magnetic ferrite powder; Microorganism is had magnetic catalytic action by the magnetic strip shape body on magnetic fillers surface, strengthens the activity of microorganism in bioreactor, makes the degradation efficiency of microbial degradation pollutant ability and bioreactor be improved, and bio-film colonization is effective.
Description
Technical field
The present invention relates to a kind of magnetic fillers based on waste plastics and preparation method thereof, belong to water-treatment technology field.
Background technology
Along with economic fast development, the yield of plastics and make consumption all be continuously increased. Plastics are easily aging, and life cycle is short, and substantial amounts of plastic particularly packing material just went out of use after 6-12 month, and what have becomes waste plastics after 1-2. Therefore, the waste plastics of generation is increasing. Waste plastics often have corrosion-resistant, the characteristic such as be not easily decomposed, if dealing with improperly, not only view and ecosystem can be produced extreme influence, being even detrimental to health. Waste plastics is carried out recycling, is possible not only to protection environment, and can also turn waste into wealth, economize on resources. The regeneration industry of waste plastics has become resource-type environmental protection industry indispensable in economic development. At present, the recycling approach of waste plastics mainly has: be processed into plastic raw materials, turning sludge into fuel utilization, pyrolysis oil preparation, production construction material etc. But traditional utilizes technology, majority needs to consume the more energy, and cost is high, and some also can bring secondary pollution.
Summary of the invention
For Shortcomings in prior art, the invention provides a kind of magnetic fillers based on waste plastics and preparation method thereof, waste plastics, effluent containing heavy metal ions the like waste can be comprehensively utilized, reduce environmental pollution; Prepared magnetic fillers, can as the microbe carrier in the technique such as bio-contact oxidation, membrane bioreactor.
A kind of magnetic fillers based on waste plastics, it is characterised in that be made up of plastic substrate and magnetic strip shape body two parts; Described plastic substrate is the waste plastics in solid waste; Described magnetic strip shape body is made up of waste plastics film coated magnetic ferrite powder; Described magnetic strip shape body is fixed on plastic substrate.
Preferably, described magnetic strip shape body is interspersed on described plastic substrate in institute's apertured, and described magnetic strip shape body two ends are equipped with knot, and described knot is more than the size in hole.
Preferably, described magnetic strip shape body is interspersed in described plastic substrate through each hole, and two sections of magnetic strip shape bodies between adjacent three holes lay respectively at the both sides of plastic substrate.
Preferably, institute's apertured is rectangular matrix or the rectangular opening of circular matrix arrangement, the big 0.5-1mm of width of described rectangular opening length ratio magnetic strip shape body, the big 0.5-1mm of thickness of described rectangular opening width ratio magnetic strip shape body.
Preferably, described magnetic strip shape body is uniformly distributed on plastic substrate, and the surface area of described magnetic strip shape body accounts for the 15-30% of plastic substrate total surface area.
Preferably, the waste plastics in described solid waste is mineral water bottle or juice bottle, and its thickness more than 20nm, is shaped as rectangle less than 2mm, roughness Ra, square or circular.
Preferably, described magnetic strip shape body is flat strip shaped body, and its width is 3-7mm, thickness is 1-2.5mm.
The preparation method of a kind of magnetic fillers based on waste plastics, it is characterised in that comprise the following steps:
(1) preparation of plastic substrate:
Choose the waste plastics in solid waste, shearing, polishing waste plastics surface; And the waste plastics surface after polishing offers multiple hole;
(2) preparation of magnetic ferrite powder:
A) in effluent containing heavy metal ions, ferrous ion and ferric ion are added, described ferrous ion and the mol ratio of other bivalent metal ions in waste water are more than 2, described ferric ion and the mol ratio of other trivalent metal ions in waste water are more than 7.5, the molar ratio range of trivalent metal ion total in waste water and total bivalent metal ion is 1.3-1.8, obtains processed waste water;
B) under being stirred continuously, in processed waste water described in step a), add highly basic, regulate the pH value of solution to more than 10, react 6-8min under room temperature, stop stirring, to mixed liquor, form sediment;
C) ageing reaction 30-60min, sediment described in step b) is converted into the magnetic ferrites of black, pours out supernatant, solid-liquid separation;
D) by the magnetic ferrites after separating in 40-60 DEG C dry, be ground to the grain graininess of magnetic ferrites at below 0.1mm, and in intensity is more than the magnetic field of 300kA/m more than premagnetization 10min, obtain described magnetic ferrite powder;
(3) preparation of magnetic strip shape body:
Choose waste plastics film, be linearly coated with glass cement at one side surface, glass cement is uniformly distributed magnetic ferrite powder; The consumption of described glass cement at least can cling magnetic ferrite powder, and the consumption of described magnetic ferrite powder at least can cover glass cement; After glass cement mummification, with the plastic sheeting being coated with glass cement, magnetic ferrite powder is wrapped to form strip shape body, and seals with glass cement, form described magnetic strip shape body;
(4) preparation of magnetic fillers:
Magnetic strip shape body described in step (3) is interspersed in the hole in step (1), is equipped with the knot more than hole respectively in the position of the two ends via of magnetic strip shape body, obtain the described magnetic fillers based on waste plastics.
Preferably, described step (2) contains copper ion and manganese ion or lead ion and zinc ion in effluent containing heavy metal ions; Described highly basic is sodium hydroxide or potassium hydroxide.
The invention has the beneficial effects as follows:
(1) raw material of magnetic fillers of the present invention is waste plastics, effluent containing heavy metal ions process product magnetic ferrite powder, it is achieved that the recycling of solid waste; Decrease environmental pollution, provide a kind of new thinking for waste plastics and processing of magnetic ferrite powder.
(2) preparation technology of magnetic fillers of the present invention is simple, easy to operate; Consuming the energy in recycling process few, cost is low, suitable for industrial.
(3) microorganism is had magnetic catalytic action by the magnetic strip shape body on magnetic fillers surface of the present invention, the activity of microorganism in bioreactor can be strengthened, the degradation efficiency making microbial degradation pollutant ability and bioreactor is improved, and bio-film colonization is effective.
Accompanying drawing explanation
Fig. 1 is based on the front view of the magnetic fillers of waste plastics.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is the plastic substrate front view of the rectangular opening of rectangular matrix arrangement.
Fig. 4 is the front view of magnetic strip shape body.
Fig. 5 is the left view of magnetic strip shape body.
Fig. 6 is the plastic substrate front view of the rectangular opening of circular matrix arrangement.
Description of reference numerals is as follows:
In figure: 1-plastic substrate; 2-rectangular opening; 3-magnetic strip shape body; 4-ties.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Embodiment 1
A kind of magnetic fillers based on waste plastics, is made up of plastic substrate 1 and magnetic strip shape body 3 two parts; Wherein, plastic substrate 1 is the useless mineral water bottle of rectangle that thickness is 0.2mm, and adopting emery cloth or two surface roughness Ra of grinder buffing is 25nm; As it is shown on figure 3, plastic substrate 1 after polishing is provided with the rectangular opening 2 of rectangular matrix arrangement; Rectangular opening 2 length is 3.5mm, and width is 1.7mm, and on same straight line, adjacent rectangle hole 2 longitudinal pitch is 26mm.
As shown in Figure 4, Figure 5, described magnetic strip shape body 3 to be the width being made up of waste plastics film coated magnetic ferrite powder be 3mm, thickness are the flat strip shaped body of 1.2mm. Wherein the preparation process of magnetic ferrite powder is as follows: a) add ferrous ion and ferric ion in the effluent containing heavy metal ions containing copper ion and manganese ion, described ferrous ion is 3 with the mol ratio of other bivalent metal ions in waste water, described ferric ion is 8 with the mol ratio of other trivalent metal ions in waste water, the mol ratio of trivalent metal ion total in waste liquid and total bivalent metal ion is 1.4, obtains processed waste water; B) while stirring, in processed waste water described in step a), add sodium hydroxide, regulate the pH value of solution to 10.5, react 6min under room temperature, stop stirring, to mixed liquor, form sediment; C) ageing reaction 40min, sediment described in step b) is converted into the magnetic ferrites of black, pours out supernatant, solid-liquid separation; D) by the magnetic ferrites after separating in 40 DEG C dry, be ground to the grain graininess of magnetic ferrites at below 0.1mm, and in intensity is more than the magnetic field of 300kA/m premagnetization 11min, obtain described magnetic ferrite powder. Take waste plastics film, be linearly coated with glass cement at one side surface, glass cement is uniformly distributed described magnetic ferrite powder; The consumption of described glass cement at least can cling magnetic ferrite powder, and the consumption of described magnetic ferrite powder at least can cover glass cement; After glass cement mummification, with the plastic sheeting being coated with glass cement, magnetic ferrite powder is wrapped to form strip shape body, and seals with glass cement, obtain magnetic strip shape body 3.
As shown in Figure 1 and Figure 2, described magnetic strip shape body 3 is interspersed in the rectangular opening 2 of plastic substrate 1 by straight line, two sections of magnetic strip shape bodies 3 between adjacent three rectangular openings 2 lay respectively at the both sides of plastic substrate 1, and the two ends of magnetic strip shape body 3 are equipped with knot 4, and described knot 4 is more than the size of rectangular opening 2. The surface area of described magnetic strip shape body 3 is the 15% of plastic substrate 1 total surface area.
Embodiment 2
A kind of magnetic fillers based on waste plastics, is made up of plastic substrate 1 and magnetic strip shape body 3 two parts; Wherein, plastic substrate 1 is the useless juice bottle of circle that thickness is 0.3mm, and adopting emery cloth or two surface roughness Ra of grinder buffing is 33nm; As shown in Figure 6, the plastic substrate 1 after polishing being provided with the rectangular opening 2 of circular matrix arrangement, rectangular opening 2 length is 8mm, and width is 3mm.
Described magnetic strip shape body 3 is the width being made up of waste plastics film coated magnetic ferrite powder be 7mm, thickness is 2mm flat strip shaped body. Wherein the preparation process of magnetic ferrite powder is as follows: a) add ferrous ion and ferric ion in the effluent containing heavy metal ions containing copper ion and manganese ion, ferrous ion is 7 with the mol ratio of other bivalent metal ions in waste water, ferric ion is 12 with the mol ratio of other trivalent metal ions in waste water, and the mol ratio of trivalent metal ion total in waste liquid and total bivalent metal ion is 1.7; B) while stirring, in the waste water after process, add sodium hydroxide, regulate the pH value of solution to 11.5, under room temperature, react 8min, stop stirring, to mixed liquor, form sediment; C) ageing reaction 60min, sediment is converted into the magnetic ferrites of black, pours out supernatant, solid-liquid separation; D) by the magnetic ferrites after separating in 55 DEG C dry, be ground to the grain graininess of magnetic ferrites at below 0.1mm, and in intensity is more than the magnetic field of 300kA/m premagnetization 20min, obtain magnetic ferrite powder; Described magnetic strip shape body 3 preparation process is as follows: takes waste plastics film, is linearly coated with glass cement at one side surface, is uniformly distributed described magnetic ferrite powder on glass cement; The consumption of described glass cement at least can cling magnetic ferrite powder, and the consumption of described magnetic ferrite powder at least can cover glass cement; After glass cement mummification, with the plastic sheeting being coated with glass cement, magnetic ferrite powder is wrapped to form strip shape body, and seals with glass cement, form magnetic strip shape body 3.
Described magnetic strip shape body 3 is interspersed in the rectangular opening 2 of plastic substrate 1 by circle, and two sections of magnetic strip shape bodies 3 between adjacent three rectangular openings 2 lay respectively at the both sides of plastic substrate 1, and the two ends of magnetic strip shape body 3 are equipped with knot 4, and described knot 4 is more than the size of rectangular opening 2. The surface area of described magnetic strip shape body 3 is the 25% of plastic substrate 1 total surface area.
Embodiment 1 and the made magnetic fillers of embodiment 2 are simultaneously used in the biofilm reactor experimental provision that three set parallel runnings process city domestic sewage with common polythene filler, the structure of three covering devices, size, media-filling rate and experiment condition etc. are all identical, and wherein experiment condition is: aeration rate 0.1m3/ h, inlet flow-patterm 7.7, temperature 25 DEG C, hydraulic detention time 8h, filler dosage 25%. After biofilm one month, in three covering device water outlets, the clearance of major pollutants is as shown in table 1.
Table 1 three covering device is to the clearance of major pollutants in sewage
As can be seen from Table 1, adopt the biofilm reactor containing magnetic fillers of the present invention to the clearance of major pollutants in city domestic sewage higher than the biofilm reactor adopting common polythene filler, the degradation efficiency of bioreactor is improved, and bio-film colonization is effective.
Described embodiment be the present invention preferred embodiment; but the present invention is not limited to above-mentioned embodiment; when without departing substantially from the flesh and blood of the present invention, those skilled in the art can make any conspicuously improved, replace or modification belongs to protection scope of the present invention.
Claims (8)
1. the magnetic fillers based on waste plastics, it is characterised in that be made up of plastic substrate (1) and magnetic strip shape body (3) two parts; Described plastic substrate (1) is the waste plastics in solid waste; Described magnetic strip shape body (3) is made up of waste plastics film coated magnetic ferrite powder; Described magnetic strip shape body (3) is fixed on plastic substrate (1); Described magnetic strip shape body (3) is interspersed on described plastic substrate (1) in institute's apertured, and described magnetic strip shape body (3) two ends are equipped with knot (4), and described knot (4) is more than the size in hole.
2. the magnetic fillers based on waste plastics according to claim 1, it is characterized in that, described magnetic strip shape body (3) is interspersed in described plastic substrate (1) through each hole, and two sections of magnetic strip shape bodies (3) between adjacent three holes lay respectively at the both sides of plastic substrate (1).
3. the magnetic fillers based on waste plastics according to claim 1 and 2, it is characterized in that, institute's apertured is rectangular matrix or the rectangular opening (2) of circular matrix arrangement, the big 0.5-1mm of width of described rectangular opening (2) length ratio magnetic strip shape body (3), the big 0.5-1mm of thickness of described rectangular opening (2) width ratio magnetic strip shape body (3).
4. the magnetic fillers based on waste plastics according to claim 1 and 2, it is characterized in that, described magnetic strip shape body (3) is uniformly distributed on plastic substrate (1), and the surface area of described magnetic strip shape body (3) accounts for the 15-30% of plastic substrate (1) total surface area.
5. the magnetic fillers based on waste plastics according to claim 1 and 2, it is characterised in that the waste plastics in described solid waste is mineral water bottle or juice bottle, its thickness more than 20nm, is shaped as rectangle less than 2mm, roughness Ra, square or circular.
6. the magnetic fillers based on waste plastics according to claim 1 and 2, it is characterised in that described magnetic strip shape body (3) is flat strip shaped body, its width is 3-7mm, thickness is 1-2.5mm.
7. the preparation method based on the magnetic fillers of waste plastics, it is characterised in that comprise the following steps:
(1) preparation of plastic substrate (1):
Choose the waste plastics in solid waste, shearing, polishing waste plastics surface; And the waste plastics surface after polishing offers multiple hole;
(2) preparation of magnetic ferrite powder:
A) in effluent containing heavy metal ions, ferrous ion and ferric ion are added, described ferrous ion and the mol ratio of other bivalent metal ions in waste water are more than 2, described ferric ion and the mol ratio of other trivalent metal ions in waste water are more than 7.5, the molar ratio range of trivalent metal ion total in waste water and total bivalent metal ion is 1.3-1.8, obtains processed waste water;
B) under being stirred continuously, in processed waste water described in step a), add highly basic, regulate the pH value of solution to more than 10, react 6-8min under room temperature, stop stirring, to mixed liquor, form sediment;
C) ageing reaction 30-60min, sediment described in step b) is converted into the magnetic ferrites of black, pours out supernatant, solid-liquid separation;
D) by the magnetic ferrites after separating in 40-60 DEG C dry, be ground to the grain graininess of magnetic ferrites at below 0.1mm, and in intensity is more than the magnetic field of 300kA/m more than premagnetization 10min, obtain described magnetic ferrite powder;
(3) preparation of magnetic strip shape body (3):
Choose waste plastics film, be linearly coated with glass cement at one side surface, glass cement is uniformly distributed magnetic ferrite powder; The consumption of described glass cement at least can cling magnetic ferrite powder, and the consumption of described magnetic ferrite powder at least can cover glass cement; After glass cement mummification, with the plastic sheeting being coated with glass cement, magnetic ferrite powder is wrapped to form strip shape body, and seals with glass cement, form described magnetic strip shape body (3);
(4) preparation of magnetic fillers:
Magnetic strip shape body (3) described in step (3) is interspersed in the hole in step (1), it is equipped with the knot (4) more than hole at the two ends of magnetic strip shape body (3) respectively, obtains the described magnetic fillers based on waste plastics.
8. the preparation method of the magnetic fillers based on waste plastics according to claim 7, it is characterised in that contain copper ion and manganese ion or lead ion and zinc ion in described step (2) in effluent containing heavy metal ions; Described highly basic is sodium hydroxide or potassium hydroxide.
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| CN201410682186.3A CN104445581B (en) | 2014-11-24 | 2014-11-24 | A kind of magnetic fillers based on waste plastics and preparation method thereof |
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| CN104445581B true CN104445581B (en) | 2016-06-15 |
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| CN105692871B (en) * | 2016-02-26 | 2018-06-26 | 江苏大学 | A kind of magnetic tubulose biofilm reactor based on solid waste and preparation method thereof |
| CN105692920B (en) * | 2016-04-05 | 2018-08-10 | 江苏大学 | A kind of magnetic bio filter tank based on waste plastics and charcoal |
| CN107129033A (en) * | 2017-04-19 | 2017-09-05 | 江苏大学 | A kind of magnetic bio filter tank based on spent sorbents |
| CN107200406A (en) * | 2017-06-27 | 2017-09-26 | 江苏大学 | A kind of biofilm reactor based on open circles taper NACF filler |
| CN112505234B (en) * | 2020-11-20 | 2022-07-08 | 黑龙江八一农垦大学 | Microbial degradation device for patulin |
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| CN201132793Y (en) * | 2007-11-23 | 2008-10-15 | 江苏红旗环保设备有限公司 | Suspended combined fillers |
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| CN103641233A (en) * | 2013-11-20 | 2014-03-19 | 江苏大学 | Method for preparing magnetic filler by using waste plastic bottles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009021502A1 (en) * | 2007-08-16 | 2009-02-19 | Georg Fritzmeier Gmbh & Co. Kg | Lattice sphere |
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|---|---|---|---|---|
| CN201132793Y (en) * | 2007-11-23 | 2008-10-15 | 江苏红旗环保设备有限公司 | Suspended combined fillers |
| EP2393588B1 (en) * | 2009-02-05 | 2013-04-17 | Origo Biotech APS | Curved polyhedrons made of polymers |
| CN201390673Y (en) * | 2009-02-23 | 2010-01-27 | 陈学军 | Bamboo packing for water treatment |
| CN103641233A (en) * | 2013-11-20 | 2014-03-19 | 江苏大学 | Method for preparing magnetic filler by using waste plastic bottles |
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| 水处理用塑料生物膜载体改性研究进展;海景等;《合成材料老化与应用》;20061231;第35卷(第4期);第41-45页 * |
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