CN105906035B - It is a kind of based on mesh-structured micropore biological membrane carrier filler - Google Patents
It is a kind of based on mesh-structured micropore biological membrane carrier filler Download PDFInfo
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- CN105906035B CN105906035B CN201610461000.0A CN201610461000A CN105906035B CN 105906035 B CN105906035 B CN 105906035B CN 201610461000 A CN201610461000 A CN 201610461000A CN 105906035 B CN105906035 B CN 105906035B
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- fin
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- net cylinder
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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
- C02F3/109—Characterized by the shape
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
It is a kind of based on mesh-structured micropore biological membrane carrier filler, belong to dirty, field of waste water treatment.Carrier main material is polyethylene or polyacrylic high molecular polymer, and add auxiliary material polyvinyl alcohol and limestone powder, polyvinyl alcohol additive amount is the 10% of main material and auxiliary material gross weight, and limestone powder is 150 200 mesh, and additive amount is the 15 20% of main material and auxiliary material gross weight；Overall structure is in net cylinder shape, while one high fin fin is arranged at interval of several twines in net cylinder outer twine direction, and high fin fin and net cylinder are into a single integrated structure, and high fin fin is consistent with the material of net cylinder；Biofilm carrier contains two-stage gap, and level-one microvesicle gap is formed by foaming process, and two level fine voids are to be dissolved out to be formed by lime stone molecule acid.The splendid stability of biomembrane after the present invention makes filler be provided with easy bacterial adherence, biomembrane high-load performance and biofilm, what it is to bring is excellent biochemical property.
Description
Technical field：
It is the invention belongs to dirty, field of waste water treatment, more particularly to a kind of based on mesh-structured biofilm carrier filler.
Background technology：
The biologic packing material used in dirty, field of waste water treatment is broadly divided into two major classes at present, and one kind is soft-filler, packet
Include it is soft combination and it is fixed, it is another kind of for hardness or semi soft packing, present invention is generally directed to hardness or semi soft packing institute
There are the problem of and invent.These filler major product types include at present：Pall ring, polyhedron empty ball, Haier's ring, ladder
Ring, Taylor's garland, conjugate ring, Raschig ring etc..These fillers mainly pursue the specific surface area and biomembrane of material in design
The suspension flow regime of update and filler in reaction tank under hydraulic blow, it is believed that bacterium can be formed very well in material surface
Biomembrane.Result of practical application is that above-mentioned filler biofilm effect in anaerobic pond is also possible that but relatively strong in aerobic tank
Hydraulic shear in and stronger aeration intensity under, these biofilm effects are very poor, and by application survey, some products are reacting
3 years time is added in pond, filler surface naked eyes do not see that apparent biomembrane exists.The reason of so causing the result be,
The form of bio-carrier designed at present is not suitable with the waterpower and aeration condition of aerobic tank, so needing to create more in overall structure
It is suitble to the filler of aerobic reaction tank condition.
Invention content：
In view of the above problems, we pass through many experiments, from filler overall structure, filler itself hydrophily, fill out
Material surface state, biomembrane film forming thickness have carried out system research, form with it is mesh-structured for essential characteristic be suitable for it is dirty,
The filler of wastewater treatment.
It is a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that carrier main material be polyethylene or
The high molecular polymers such as polypropylene, and auxiliary material polyvinyl alcohol and limestone powder are added, polyvinyl alcohol additive amount is main material
The 10% of material and auxiliary material gross weight, limestone powder are 150-200 mesh, and additive amount is main material and auxiliary material gross weight
15-20%；Overall structure is in net cylinder shape, while being set at interval of several (preferably by two) twines in net cylinder outer twine direction
One high fin fin is set, high fin fin and net cylinder are into a single integrated structure, and high fin fin is consistent with the material of net cylinder.
Overall structure is in net cylinder shape (see attached drawing 1), and net cylinder mesh wire diameter is 0.5-1.0mm ((2) in attached drawing 1)；Twine is handed over
Knit the round net cylinder of melting adhered formation, net cylinder diameter 8-1.5mm；Twine is bonded the mesh to be formed ((3) in attached drawing 1), mesh ruler
Very little between 1.0-2.0mm (excessive mesh is unfavorable for the formation of complete bio film).In whole every, net cylinder outer twine direction
Every the high fin fin ((1) in attached drawing) of several twines setting, the preferably a height of 2.0mm of the high fin fin (refers to being higher by net outward
The height of cylinder), width it is identical with the twine of net cylinder, every high fin fin is whole to form helical wing plate structure, net in net cylinder outer ring
Cylinder entire length 15-20mm.
Biofilm carrier twine and high fin fin contain two-stage gap, and level-one microvesicle gap is formed by foaming process, and two
Grade fine voids are to be dissolved out to be formed by lime stone molecule acid.
Production method includes the following steps：
(1) high molecular polymers mass fraction 70-80%, the polyvinyl alcohol quality such as main material polyethylene or polypropylene are used
The limestone powder 10-20% of score 10% and 150-200 mesh carries out mixing granulation；
(2) technique is rotated into using hot-melt extruded twine die head to carry out being fabricated to net cylinder shape：Pass through hot-melt extruded machine
Twine die head rotary extrusion, is stretched, and mesh is made to shape by water cooling after foaming fully at uniform diamond shape；The present invention
In high fin fin be so that corresponding hole widened, deepened according to model and obtain.
(3) sizing rear net-tube, is impregnated using sulfuric acid or hydrochloric acid acid solution, and part limestone powder is made to be formed by acid dissolving
Fine voids；The step can require to adjust by the concentration of adjusting sulfuric acid or hydrochloric acid acid solution, dissolution soaking time according to proportion
The stripping quantity of whole limestone particle, and then adjust the proportion for forming fine voids and biofilm carrier；
(4) it washes with water and by way of adding alkali, adjustment pH is neutrality；
(5) it air-dries, cuts into finished product.
Based on above-mentioned basic composition and production method, the filler following features are imparted：
(1) production method, due to having mixed polyvinyl alcohol in main material polyethylene or polypropylene material, in combination with hair
The microvesicle gap that bubble is formed makes main structure material be provided with ion-permeable, and the lime stone to realize inside configuration can
It is dissolved in acid solution, the filling-material structure body being made of macromolecular is enable to form hyperfine structure gap, simultaneously as poly- second
The participation of enol has good hydrophilicity, is conducive to the attachment of bacterium；Additionally, due to the addition of limestone powder, not by
Dissolving part can adjust the proportion of filler.
Microvesicle volume general control obtained by foaming is 20% hereinafter, and acid dissolves lime stone amount with carrier filler entirety matter
Metric density requirement is adjusted by acid concentration, dissolution time.
(2) mesh-structured to make the anchoring knot that the biomembrane formed later passes through net cylinder ectonexine in overall structure
The formation of structure, it is whole more to stablize；
(3) setting of the high fin fin in filler periphery can greatly resist filler mutually collision friction in reaction tank and bring
Impact damage.
The filler forms the special designing of fine structure due to mesh overall structure and mesh material, and filler is made to be provided with easily
The splendid stability of biomembrane after bacterial adherence, biomembrane high-load performance and biofilm, what it is to bring is excellent biochemistry
Performance.The extensive use of the filler will greatly improve the biochemical property of existing activated sludge process reaction tank, be existing sewage plant
It proposes mark transformation and creates preferable technological approaches, preferable technical conditions are provided for new waterworks construction.
Description of the drawings
The present invention is based on mesh-structured micropore biological membrane carrier filling-material structure schematic diagrames by Fig. 1.
1 high fin fin, 2 net cylinder twines, 3 mesh.
Specific implementation mode
With reference to embodiment, the present invention will be further described, but the present invention is not limited to following embodiments.
Embodiment 1
See Fig. 1 based on mesh-structured micropore biological membrane carrier filler, prepares
(1) the high molecular polymers mass fractions 75% such as main material polyethylene or polypropylene, polyvinyl alcohol quality point are used
The limestone powder 15% of number 10% and 150-200 mesh carries out mixing granulation；
(2) technique is rotated into using hot-melt extruded twine die head to carry out being fabricated to net cylinder shape：Pass through hot-melt extruded machine
Twine die head rotary extrusion, is stretched, and mesh is made to shape by water cooling after foaming fully at uniform diamond shape；The high fin wing
Piece is so that corresponding hole widened, deepened according to model and obtain.
(3) sizing rear net-tube, is impregnated, soaking time 1.5h makes about 80% using 30% sulfuric acid or hydrochloric acid acid solution
Limestone powder forms fine voids by acid dissolving；
(4) it washes with water and by way of adding alkali, adjustment pH is neutrality；
(5) it air-dries, cuts into finished product.
Utilize the preferable nitrifying activated sludge (rate of nitrification 20mg/L.h) of sewage plant activity, MLSS：3700mg/L, it is former
Water COD：450mg/L, NH4 +-N：65mg/L；Reaction condition (micro-pore aeration) DO：1.2mg/L, pH：6.8, HRT：6h, temperature T：
25℃；Reactor volume：150L, filler adding rate (stacking volume 30%)；Method of operation mixed liquor stops in reaction tank by 6h
After staying, mixed liquor, which goes out, flow to sedimentation basin, and sludge is through reflux (reflux ratio 100%) after precipitation.Filler specification：Net cylinder diameter：12mm,
Net cylinder side wall mesh：2mm, net cylinder height：15mm.
Biofilm culture is run 32 days, and filler fenestral porosity is filled up by biomembrane, and tubular structure is integrally formed；As a result nitrification speed
Rate has initial 14mg/L.h to increase to 56mg/L.h, shows apparent high-speed nitrification effect.By 15d stable operations
Afterwards, it (is mixed using ice water, exchanger heat-exchange method) followed by low-temperature test, under the premise of 25 DEG C, using the 15d times,
Continued down, the final temperature of reactor that controls is 16 DEG C of progress stable operations, continuous operation 40 days, the filler under the conditions of 16 DEG C
Nitrification rate can be kept in 30mg/L.h deviations within the scope of 2mg/L.h.Thus the excellent biomembrane retentivity of the filler is proved
Energy.By front and back 102 days continuous operations, it is formed by biomembrane stabilization.
Claims (8)
1. a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that carrier main material is polyethylene or gathers
The high molecular polymer of propylene, and auxiliary material polyvinyl alcohol and limestone powder are added, polyvinyl alcohol additive amount is main material
With the 10% of auxiliary material gross weight, limestone powder is 150-200 mesh, and additive amount is the 15- of main material and auxiliary material gross weight
20%；Overall structure is in net cylinder shape, while one high fin fin is arranged at interval of several twines in net cylinder outer twine direction, high
Fin fin and net cylinder are into a single integrated structure, and high fin fin is consistent with the material of net cylinder；Biofilm carrier twine and high fin fin contain
Two-stage gap, level-one microvesicle gap is formed by foaming process, and two level fine voids are to dissolve out shape by lime stone molecule acid
At.
2. described in accordance with the claim 1 a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that every
Every two twines, one high fin fin is set.
3. described in accordance with the claim 1 a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that net cylinder
Mesh wire diameter is 0.5-1.0mm；Mesh size is between 1.0-2.0mm.
4. described in accordance with the claim 1 a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that net cylinder
Diameter 1.5-8mm；Net cylinder entire length 15-20mm.
5. described in accordance with the claim 1 a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that high fin
The a height of 2.0mm of fin, width are identical with the twine of net cylinder.
6. described in accordance with the claim 1 a kind of based on mesh-structured micropore biological membrane carrier filler, which is characterized in that every
High fin fin is whole to form helical wing plate structure in net cylinder outer ring.
7. method of the claim 1-6 any one of them based on mesh-structured micropore biological membrane carrier filler is prepared, it is special
Sign is, includes the following steps：
(1) main material polyethylene or polypropylene high molecular polymer mass fraction 70-80%, polyvinyl alcohol mass fraction are used
The limestone powder 10-20% of 10% and 150-200 mesh carries out mixing granulation；
(2) technique is rotated into using hot-melt extruded twine die head to carry out being fabricated to net cylinder shape：Pass through the twine of hot-melt extruded machine
Die head rotary extrusion, is stretched, and mesh is made to shape by water cooling after foaming fully at uniform diamond shape；(3) after shaping
Net cylinder is impregnated using sulfuric acid or hydrochloric acid acid solution, and part limestone powder is made to form fine voids by acid dissolving；The step can
To be required to adjust the dissolution of limestone particle by the concentration of adjusting sulfuric acid or hydrochloric acid acid solution, dissolution soaking time according to proportion
Amount, and then adjust the proportion for forming fine voids and biofilm carrier；
(4) it washes with water and by way of adding alkali, adjustment pH is neutrality；
(5) it air-dries, cuts into finished product.
8. according to the method for claim 7, which is characterized in that high fin fin is so that corresponding hole is widened according to model, deepen system
It is standby and obtain.
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| CN201610461000.0A CN105906035B (en) | 2016-06-22 | 2016-06-22 | It is a kind of based on mesh-structured micropore biological membrane carrier filler |
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| CN201610461000.0A CN105906035B (en) | 2016-06-22 | 2016-06-22 | It is a kind of based on mesh-structured micropore biological membrane carrier filler |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108290760A (en) * | 2016-11-10 | 2018-07-17 | 陈彦伯 | Bio-carrier |
| CN107235562A (en) * | 2017-08-10 | 2017-10-10 | 中国科学院南京地理与湖泊研究所 | A kind of biological diaphragm plate purification of water quality component of step alternating expression |
| CN107381789A (en) * | 2017-09-13 | 2017-11-24 | 北京工业大学 | Based on netted net cylinder nano carbon fiber adhesive substrate water treatment filler |
| CN107381790A (en) * | 2017-09-13 | 2017-11-24 | 北京工业大学 | Nano carbon fiber adhesive substrate water treatment filler based on 3-D solid structure |
| CN111453834A (en) * | 2020-04-07 | 2020-07-28 | 天津科信建设工程检测有限公司 | Preparation method of bioactive filler based on polypropylene foam material and bioactive filler prepared by same |
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| JPH02211292A (en) * | 1989-02-09 | 1990-08-22 | Nkk Corp | Microorganism attracting particle |
| JP2002346594A (en) * | 2001-05-25 | 2002-12-03 | Taiho Ind Co Ltd | Molded object for immobilizing denitrifying bacterium |
| KR101297978B1 (en) * | 2013-05-28 | 2013-08-23 | 주식회사 지이테크 | Preparation method of porous hydrophilic media containing gelatin which is extracted from waste of leather processing for wastewater biological treatment |
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Patent Citations (4)
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|---|---|---|---|---|
| CN101148289A (en) * | 2006-09-19 | 2008-03-26 | 宜兴市裕隆环保有限公司 | Suspending porous biological carrier and preparation |
| CN101439905A (en) * | 2008-12-18 | 2009-05-27 | 南京大学 | Foaming extrusion molding thermoplastic composite material stuffing for biological treatment of waste water |
| CN101746881A (en) * | 2009-12-11 | 2010-06-23 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Honeycomb network pipe bio-carrier |
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