CN105198075A - Preparation method for magnetic biological carrier applied to sewage treatment - Google Patents
Preparation method for magnetic biological carrier applied to sewage treatment Download PDFInfo
- Publication number
- CN105198075A CN105198075A CN201410295834.XA CN201410295834A CN105198075A CN 105198075 A CN105198075 A CN 105198075A CN 201410295834 A CN201410295834 A CN 201410295834A CN 105198075 A CN105198075 A CN 105198075A
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- China
- Prior art keywords
- magnetic
- particle
- carrier
- molecular polymer
- particles
- 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
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- 239000000969 carrier Substances 0.000 title claims abstract description 57
- 230000005291 magnetic Effects 0.000 title claims abstract description 52
- 239000010865 sewage Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000006249 magnetic particle Substances 0.000 claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 32
- 229920000642 polymer Polymers 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims abstract description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N Iron(II,III) oxide Chemical compound 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- 239000004743 Polypropylene Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 235000019516 cod Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005294 ferromagnetic Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- 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
A preparation method for a magnetic biological carrier applied to sewage treatment. The magnetic biological carrier is characterized by comprising the following components: 7-21wt% of magnetic-particles and 79-93wt% of high-molecular polymer, wherein the magnetic-particles are one or a mixture of iron-containing magnetic substances; the high-molecular polymer comprises one or a mixture of high molecular materials; preparation steps are as follows: 1), drying magnetic-particles with the grain size of 0.01-0.05 mm at 80-120 DEG C and preserving in a closed manner at the normal temperature; 2), washing the high-molecular polymer with the density of 0.90-1.30 g/cm<3> and then drying; 3), mixing the magnetic-particles obtained in the step 1) with the high-molecular polymer obtained in the 2) through a stirrer, feeding the mixture into an extruder, melting under the action of the extruder so as to enable the magnetic-particles to be fully mixed with the high-molecular polymer, extruding and cutting off to form high-molecular polymer particles containing magnetic-particles; 4), grinding the high-molecular polymer particles obtained in the 3) and screening through a sieve so as to obtain magnetic carrier particles with the grain size of 0.043-0.315 mm and the density of 1.0-1.4 g/cm<3>, wherein the magnetic carrier particles are used as magnetic biological carriers for sewage treatment.
Description
Technical field
The invention belongs to field of Environment Protection, relate to a kind of magnetic bio-carrier of disposing of sewage for suspended biological embrane method and preparation method thereof, specifically be in the aeration tank that is added in Wastewater Treated by Activated Sludge Process sewage of the magnetic bio-carrier that the method is prepared, thus the biological concentration that improve in aeration tank, improve sewage treating efficiency, meanwhile, magnetic carrier can major part reclaim, and again utilizes after demoulding.
Background technology
At present, existing sewage work of China has more than 40% to adopt traditional activated sludge process, and it is large that traditional activated sludge process exists floor space, the shortcomings such as the treatment time is long, and unit surface processing efficiency is not high.Therefore, improve sewage treating efficiency on the original basis, shorten treatment cycle and become problem in the urgent need to address.
In aeration tank, add carrier contribute to improving biological concentration, improve sewage treating efficiency.At present, the bio-carrier adopted both at home and abroad mainly contains: pottery, polystyrene spheres, gac, hard coal, fine quartz sand, yellow sand, flue dust, slag, baton round etc.There is the shortcomings such as pump around circuit energy consumption is large, carrier demoulding difficulty, operational administrative are complicated in them.Coke fines adsorptivity is strong, and due to surface irregularity, biofilm is easy, but insufficient strength, easily damaged and number of dropouts is very large during demoulding.Flue dust is as bio-carrier except having the similar character of same coke fines, and also the light weight because its particle diameter is little, more easily runs off, need often to supplement.In general quartz sand be the comparatively good vector of aerobic biological fluid-bed technical finesse waste water, but because of its smooth surface not easy to be filmed.
Research shows, although carrier granule that is tiny, light weight has larger specific surface area than thick carrier granule, processing efficiency has more advantage, but be difficult to sedimentation, guarantee can only be operated below entrainment velocity particle not to be taken out of, so there is higher turnover rate, limit operation of equipment ability; The carrier granule sedimentation that density is large is fast, but usual this kind of material surface is smooth, and biofilm is slower.
Employing magnetic bio-carrier effectively can solve the problem existing for present stage sewage disposal carrier.First because magnetic bio-carrier surface irregularity, specific surface area is large, easy to be filmed, and density is close with sewage, can well with sewage fluidization, same energy consumption can drop to very low; Because carrier has magnetic, so its magnetic can be utilized to carry out most recovery, re-use after demoulding, improve recycle efficiency; The cost of preparation is also relatively low, good in economic efficiency.
Summary of the invention
The object of the invention is to overcome the existing bio-carrier shortcomings such as pump around circuit energy consumption is large in the treatment of waste water, carrier demoulding difficulty, operational administrative are complicated, thus provide one to have magnetic response performance, bigger serface, easy to be filmed, the magnetic bio-carrier that density is close with sewage.The present invention for carrier with the magnetic-particle of coated high molecular polymer, is added to aeration tank, not only increases the biological concentration in pond, compared with common bio-aeration pool, improve COD clearance, and magnetic carrier reclaims by magnetic separator, realize recycling of carrier.
Another object of the present invention is to provide a kind of preparation method being applied to the magnetic bio-carrier of sewage disposal.
Magnetic bio-carrier for the treatment of sewage comprises: magnetic-particle, a high molecular polymer, and its component is as follows:
Magnetic-particle 7-21wt%;
High molecular polymer 79-93wt%;
Described magnetic-particle is the mixture of the wherein one or more than one of the magnetic substance of iron content;
Described high molecular polymer comprises the mixture of the wherein one or more than one of macromolecular material.
The magnetic substance of described iron content comprises Z 250, metal iron powder, magnetite.
Described macromolecular material comprises polyethylene, polypropylene, polystyrene; Rubber powder.
For the treatment of a preparation method for the magnetic bio-carrier of sewage, comprise the steps:
1) by particle diameter at the magnetic-particle of 0.01 ~ 0.05mm after 80 ~ 120 DEG C of dryings, the airtight preservation of normal temperature;
2) be 0.90 ~ 1.30g/cm by density
3high molecular polymerization composition granule washing post-drying;
3) by step 1) magnetic-particle that obtains and step 2) the high molecular polymerization composition granule that obtains, by a certain percentage, after agitator fully mixes, be added in forcing machine, under the effect of forcing machine, through melting, magnetic-particle is fully mixed with high molecular polymerization composition granule, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.
4) by step 3) the high molecular polymer particle abrasion that obtains, sieving obtains the magnetic carrier that particle diameter is 0.043 ~ 0.315mm, obtains the magnetic bio-carrier for the treatment of sewage.
The present invention compared with prior art, has the following advantages:
1), when magnetic bio-carrier provided by the invention is used for sewage disposal, treatment effect is good;
2) magnetic bio-carrier provided by the invention is reusable, reduces the cost of sewage disposal;
3) magnetic bio-carrier preparation method provided by the invention is simple, and required reagent and material are easy to get;
4) magnetic bio-carrier provided by the invention can adopt waste high polymer (i.e. waste or used plastics, waste old), while making waste product resource circulation utilization, also reduces the production cost of this carrier.
5) magnetic bio-carrier preparation method provided by the invention has used for reference extrusion moulding in Plastics Industry and melting principle, adopt melt-blending process to prepare magnetic composite, advantage is that equipment is simple, and controllability is strong, with short production cycle, be easy to realize suitability for industrialized production.
Embodiment
Embodiment 1
Select polyvinyl resin (5000g) and Fe
3o
4magnetic-particle (800g) is after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle fully mixed with polyethylene resin particles, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.16 ~ 0.315mm, density is about 1.11g/cm
3, obtain magnetic bio-carrier S-1.
Embodiment 2
Select acrylic resin (4000g) with metal iron powder magnetic-particle (700g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle is fully mixed with acrylic resin particle, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.076 ~ 0.16mm, density is about 1.04g/cm
3, obtain magnetic bio-carrier S-2.
Embodiment 3
Select polystyrene resin (5000g) with magnetite powder magnetic-particle (900g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle is fully mixed with polystyrene resin beads, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.043 ~ 0.076mm, density is about 1.20g/cm
3, obtain magnetic bio-carrier S-3.
Embodiment 4
Select waste and old resin material (major ingredient is polystyrene) (5000g) with magnetite powder magnetic-particle (1000g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle is fully mixed with waste and old resin material particle, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.076 ~ 0.16mm, density is about 1.29g/cm
3, obtain magnetic bio-carrier S-4.
Embodiment 5
Select rubber powder (5000g) with magnetite powder magnetic-particle (900g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of Rubber Extruder, through melting, magnetic-particle is fully mixed with powder rubber particle, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.043 ~ 0.076mm, density is about 1.40g/cm
3, obtain magnetic bio-carrier S-5.
Embodiment 6
Select waste old material (6000g) with magnetite powder magnetic-particle (900g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle is fully mixed with waste old material granule, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.076 ~ 0.16mm, density is about 1.32g/cm
3, obtain magnetic bio-carrier S-6.
Embodiment 7
After selecting acrylic resin and polystyrene resin mass ratio 1: 1 to mix (5000g) with ferromagnetic powdered iron ore magnetic-particle (500g) after agitator fully mixes, be added in plastics extruder, in the machine barrel of plastics extruder, through melting, magnetic-particle is fully mixed with acrylic resin, polystyrene resin beads, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle.Then by high molecular polymer particle abrasion, sieving obtains the magnetic carrier that particle diameter is about 0.076 ~ 0.16mm, density is about 1.07g/cm
3, obtain magnetic bio-carrier S-7.
Claims (2)
1. be applied to a preparation method for the magnetic bio-carrier of disposing of sewage, it is characterized in that magnetic bio-carrier component is as follows: magnetic-particle 7-21wt%; High molecular polymer 79-93wt%; Described magnetic-particle is the mixture of the wherein one or more than one of the magnetic substance of iron content; Described high molecular polymer comprises: the mixture of macromolecular material wherein one or more than one; Preparation process is as follows: 1) by particle diameter at the magnetic-particle of 0.01 ~ 0.05mm after 80 ~ 120 DEG C of dryings, the airtight preservation of normal temperature; 2) be 0.90 ~ 1.30g/cm by density
3high molecular polymerization composition granule washing post-drying; 3) by step 1) magnetic-particle that obtains and step 2) the high molecular polymerization composition granule that obtains, after agitator mixing, be added in forcing machine, under the effect of forcing machine, through melting, magnetic-particle is fully mixed with high molecular polymerization composition granule, extrude, cut off, form the high molecular polymer particulate containing magnetic-particle; 4) by step 3) the high molecular polymer particle abrasion that obtains, sieving obtains the magnetic carrier particles that particle diameter is 0.043 ~ 0.315mm, and density is 1.0 ~ 1.4g/cm
3, serve as the magnetic bio-carrier of disposing of sewage.
2. by the preparation method being applied to the magnetic bio-carrier of disposing of sewage according to claim 1, it is characterized in that: the magnetic substance of described iron content is Z 250, metal iron powder, magnetite ore particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295834.XA CN105198075A (en) | 2014-06-27 | 2014-06-27 | Preparation method for magnetic biological carrier applied to sewage treatment |
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|---|---|---|---|
| CN201410295834.XA CN105198075A (en) | 2014-06-27 | 2014-06-27 | Preparation method for magnetic biological carrier applied to sewage treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967322A (en) * | 2016-07-18 | 2016-09-28 | 胡勇飞 | Immobilized microbial ball used in sewage treatment plant and operating method thereof |
| CN108913679A (en) * | 2018-06-12 | 2018-11-30 | 河海大学 | A kind of biofilm reactor magnetic bio-carrier and preparation method thereof |
-
2014
- 2014-06-27 CN CN201410295834.XA patent/CN105198075A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967322A (en) * | 2016-07-18 | 2016-09-28 | 胡勇飞 | Immobilized microbial ball used in sewage treatment plant and operating method thereof |
| CN108913679A (en) * | 2018-06-12 | 2018-11-30 | 河海大学 | A kind of biofilm reactor magnetic bio-carrier and preparation method thereof |
| CN108913679B (en) * | 2018-06-12 | 2021-07-27 | 河海大学 | Magnetic biological carrier for biofilm reactor and preparation method thereof |
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Application publication date: 20151230 |