CN101462791B - Suspending stuffing for processing fluid bed biological film - Google Patents
Suspending stuffing for processing fluid bed biological film Download PDFInfo
- Publication number
- CN101462791B CN101462791B CN2009100771291A CN200910077129A CN101462791B CN 101462791 B CN101462791 B CN 101462791B CN 2009100771291 A CN2009100771291 A CN 2009100771291A CN 200910077129 A CN200910077129 A CN 200910077129A CN 101462791 B CN101462791 B CN 101462791B
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- Prior art keywords
- floating stuffing
- volcanics
- stuffing
- rubber powder
- stone flour
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241000269799 Perca fluviatilis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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Images
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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a suspending filler for treating a biomembrane of a fluidized bed, capable of treating urban wastewater, regenerated water, industrial wastewater and the like. The suspending filler prepared from lava rock powder made of lava, rubber powder and adhesive by processing; the suspending filler has a columnar shape, a spherical shape, a sheet shape, a massive shape or other irregular shapes. The suspending filler has the characteristics of large surface area, suitability for adsorption and growth of microorganism, light specific gravity, easy fluidization, high strength, uneasy abrasion, uneasy loss and the like. The suspending filler can realize circular fluidization in a biotreatment reaction pool so that the aged biomembrane naturally falls off and is refurbished and the biomembrane adhered to the suspending filler keeps vigorous activity momently; and simultaneously, the suspending filler increases contact between the biomembrane and oxygen gas and oxygen transfer efficiency and farthest improves efficiency of biotreatment.
Description
Technical field
The present invention relates to floating stuffing, relate in particular to the floating stuffing that is used for the fluid bed biological film treatment technology, belong to water-treatment technology field.
Background technology
The widespread use in municipal effluent, trade effluent, regenerated water deep treatment system of fluid bed biological film treatment technology and BAF treatment technology, its dominant mechanism is biomembrance process.
Biomembrance process is with the place of some specific supports as the microbial film growth and breeding, early stage biofilm carrier adopts crude substance such as slag, bamboo chip, batten, developed subsequently with glass reinforced plastic, plastics etc. be material honeycomb fashion or closed assembly filler such as corrugated, hang soft semi soft packing, elastic solid filler etc.These fillers all relatively are fit to the static bed biomembrane treatment system.But these fillers exist specific surface area little, and the microorganism habitat is little, and processing efficiency is low; Shortcomings such as microorganism is the biofilm difficulty on filler, and the replacement cycle of film is long, and is easily aging.
The fluid bed biological film treatment technology adopts floating stuffing as the microorganism growth habitat, microorganism can grow fine and close microbial film at the surface and the inside passage of floating stuffing, provide huge living space to microorganism, can breed huge microorganism species, metabolism by microorganism species and flocculation, adsorption can greatly improve the efficient of biological treatment.Simultaneously, thermopnore utilizes circulating of floating stuffing, frictional impact between hydraulic shear effect and floating stuffing, at any time keep making the aged microbial film come off naturally and refreshing, allow and keep vigorous activity attached to the microbial film on the floating stuffing, also increase contacting and oxygen transfer efficiency of microbial film and oxygen, farthest improved the efficient of biological treatment.
Elastomeric suspension filler or baton round floating stuffing are widely used in the fluid bed biological film treatment system abroad, as the biofilm packing in the AnoxKaldnes company thermopnore of Norway and be applicable to that carrier current movable bed biofilm reactor model is respectively as illustrated in fig. 1 and 2:
This system adopts porous plastic hollow ball, proportion near with the floating stuffing of water, under the aeration effect, circulate, the aged microbial film is come off naturally and refresh, and the microbial film that adheres to keeps vigorous activity, and simultaneously, the increase microbial film contacts and oxygen transfer efficiency with oxygen.Carrier is by the high density polyethylene(HDPE) manufacturing, and voidage is big, light specific gravity, corrosion-resistant strong.This technical load height, take up an area of little; Applied range, turndown ratio are big; Shock-resistant; Simple to operate, easy to maintenance.In the several engineering of China is used, received good effect.But the specific surface area of the floating stuffing that this technology obtains only has 600～1000m
2/ m
3, specific surface area is big inadequately, is used for the floating stuffing enormous amount that the fluid bed biological film treatment system need be filled, filler investment cost height.
Domestic also have several companies to use fluid bed biological film treatment system and floating stuffing on the basis of introduction of foreign technology, because its floating stuffing also is the level of foreign imitation floating stuffing, influenced the popularization of this technology, for this reason, the floating stuffing of developing a kind of suitable fluid bed biological film treatment system will have very significant meaning.
Require the floating stuffing needs to circulate and be used as the characteristics of microorganism habitat according to thermopnore, suitable floating stuffing should satisfy following basic demand.
● specific surface area is big: floating stuffing is generally selected the porous inertia floating stuffing that specific surface area is big, the perforate voidage is high for use, and this floating stuffing helps contact biofilm and the growth of microorganism, keeps more microbial biomass; The mass transfer process that helps the refuse that required oxidation and nutritive substance in the microbial metabolism and metabolism produce;
● physical strength is good: floating stuffing must have between the hydraulic shear effect of varying strength and floating stuffing the low requirement of mechanical strength of breakage rate in the frictional impact process.Even making carrier use, good carrier still can keep its original size and shape for many years in the frictional impact process;
● voidage and surfaceness height: require floating stuffing to have certain voidage and roughness, help adhering to, growing of microorganism.
● biological, chemical stability is good: microbial film can produce multiple meta-bolites in metabolic processes, some meta-bolites may produce corrosive nature to carrier, therefore floating stuffing must have certain chemical stability and antiacid alkali and corrodibility, need not participate in biomembranous biochemical reaction simultaneously, and itself should be not biodegradable.
● surface electrical behavior and wetting ability: microorganism generally has negative charge, and hydrophilic, so filling surface has positive charge and will help microorganism set growth, and the wetting ability of carrier surface helps adhering to of microorganism equally.
Summary of the invention
The objective of the invention is to overcome problems of the prior art, a kind of floating stuffing that fluid bed biological film is handled that is used for is provided, this filler also can be used for the BAF system.
Different with floating stuffing of the prior art, floating stuffing of the present invention mainly comprises following ingredients:
1, rubber powder: the wear resisting property that makes full use of rubber powder is strong, and the feature of good springiness is easy to form vesicular structure to guarantee the floating stuffing of producing, and can guarantees its intensity height, and wear resisting property is good; The granularity of rubber powder is preferably 30～50 orders;
2, volcanics stone flour: the absorption property and the proportion regulatory function that make full use of volcanics; The absorption property that utilizes volcanics is to increase the microbial enrichment of filling surface; Utilize volcanics stone flour proportion can adjust the proportion of filler more greatly, to increase the flowing property of filler; The granularity of volcanics stone flour is preferably 10～20 orders;
3, tackiness agent: utilize tackiness agent (such as ethylene-vinyl acetate copolymer, nylon, thermoplastic polyester etc.) that rubber powder and volcanics stone flour are bonded to the floating stuffing with vesicular structure with required face shaping, and can not decomposed and destroy by organic pollutant, microorganism and the meta-bolites thereof in the biological treatment environment.
Weight ratio between above-mentioned three kinds of principal constituents is preferably rubber powder: volcanics stone flour: tackiness agent=90～110: 5～20: 20～35; More preferably 95～105: 5～15: 20～30, be preferably 100: 10: 25 especially.
In order to obtain better product performance, the floating stuffing of the present invention that can make by the weight ratio between the above-mentioned three kinds of principal constituents of suitable adjusting has 0.985～1.028kg/m
3Scope in wet density, and have 1000～1500m
2/ m
3Specific surface area, wherein, wet density is preferably 1.012kg/m especially
3Specific surface area is preferably 1480m especially
2/ m
3
The profile of floating stuffing of the present invention can have multiple shape, and common having is cylindrical, spherical or sheet, bulk etc. are irregularly shaped, and wherein preferably between 5～10mm, length is between 6-12mm for the diameter of cylindrical floating stuffing; The diameter of spherical suspending filling material is between 5-10mm.Fig. 3 has provided a kind of example of cylindrical floating stuffing.Fig. 4 has provided the microorganism enlarged photograph attached to the floating stuffing surface.
The use of volcanics stone flour is one of core point of difference between floating stuffing of the present invention and the prior art.
The major ingredient of volcanics stone flour comprises tens kinds of mineral substance such as silicon, aluminium, calcium, sodium, magnesium, titanium, manganese, iron, nickel, cobalt and molybdenum and trace element, and it is apparent to be irregular particle, and color is a chocolate, and the porous light weight has the intensive adsorptive power.Following table 1 has provided an example of volcanic rock efflorescence composition.
Table 1: volcanic rock efflorescence component list
| Chemical ingredients | SiO 2 | CaO | MgO | Fe 2O 3 | FeO | Al 2O 3 | TiO 2 | K 2O | Na 2O |
| Content wt% | 53.82 | 8.36 | 2.46 | 9.08 | 1.12 | 16.89 | 0.06 | 2.30 | 2.55 |
Volcanics has following properties:
1, surface irregularity, biofilm speed is fast, microbial film difficult drop-off during back flushing;
2, has porousness preferably; Volcanics is the natural cellular porous, is the growing environment of microorganism cenobium the best;
3, physical strength height; Through national quality testing department check, its intensity is 6.08Mpa, through facts have proved the hydraulic shear effect that can tolerate varying strength, has grown other floating stuffing of the prior art its work-ing life far away;
4, biochemical property is stable; The volcanic rock powder particles is anticorrosive, has inertia, and is water insoluble, and contactant is not had corrosive nature; In environment, do not participate in biomembranous biochemical reaction;
5, surface electrical behavior and wetting ability are better; Volcanic rock powder particles surface has positive charge, helps electronegative microbial bacteria briquetting own and growth, and wetting ability is strong, the many and fast growth of the biofilm biomass that adheres to;
6, as biofilm carrier, the volcanic rock powder particles is harmless to institute fixed microorganism, the unrestraint effect, and facts have proved does not influence microbic activity.
Based on the above-mentioned advantage of volcanics stone flour, the present invention directly is processed into 10-20 purpose particle with the volcanics stone flour, directly and rubber powder and tackiness agent be processed into floating stuffing, mainly utilize the following characteristic of volcanics stone flour:
● the good absorption property that utilizes volcanics is to increase the microbial enrichment of filling surface;
● utilize volcanics stone flour proportion bigger, can adjust the proportion of filler, make the proportion of floating stuffing and water approaching, to increase the suspension characteristic and the flowing property of filler;
● utilize the good physical strength of volcanics, increase the ballistic ability of the water-fast power of floating stuffing, prolong the work-ing life of floating stuffing;
● utilize the good biological chemistry stability of volcanics, guarantee that floating stuffing in use can not be corroded and biological degradation;
● utilize the volcanics surface to have positive charge, characteristic that wetting ability is strong, the surface electrical behavior and the wetting ability of improvement traditional biological floating stuffing more help adhering to of microorganism.
As another core point of difference between floating stuffing of the present invention and the prior art, the present invention adds rubber powder in the floating stuffing as major ingredient, and rubber powder can be by the waste and used rubber tyre manufacturing, and the main innovate point of bringing thus is:
● utilize the good wear resisting property of rubber, increase the wear resisting property of filler, prolong the work-ing life of floating stuffing;
● utilize rubber and tackiness agent can form the floating stuffing of vesicular structure, guaranteed the specific surface area of filler;
● the rubber powder that utilizes waste rubber tire to produce can be with refuse reclamation, not only environmental protection but also economy.
In addition, floating stuffing of the present invention can avoid in the prior art some traditional floating stuffing to add reinforcing filler, guaranteeing that floating stuffing does not participate in biomembranous biochemical reaction, thereby has avoided the biological degradation of floating stuffing and influences its performance.
Generally speaking, floating stuffing of the present invention is compared the advantage that is had with prior art and wherein is embodied in:
● specific surface area (can reach 1000-1500m greatly
2/ m
3)
● high-wearing feature
● snappiness
● chemical stability is good
● long service life
● density approaches water, good flowing properties, and system energy consumption is low
● the porosity height
● surperficial positively charged and wetting ability are strong, and favourable and microorganism cenobium is adhered to and perched
Description of drawings
Fig. 1 is the biofilm packing photo in the AnoxKaldnes company thermopnore;
Fig. 2 is an AnoxKaldnes company fluid bed biological film reactor model synoptic diagram;
Fig. 3 is the cylindrical floating stuffing photo that the embodiment of the invention makes;
Fig. 4 is the microorganism enlarged photograph on the cylindrical floating stuffing surface that makes of the embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Embodiment 1
Present embodiment is made floating stuffing by following method:
1. rubber powder, volcanics stone flour, tackiness agent are stirred up to adhesive melts in rubber and plastic forcing machine the inside heating edge;
2. the tackiness agent after mixing is wrapped in the surface of rubber powder and rock powder, obtains having the mixture of vesicular structure;
3. it is cut into needed shape, can produces floating stuffing.
Fig. 3 is the photo of the cylindrical floating stuffing that makes, and its parameters is as shown in table 2.
The technical parameter of the floating stuffing that table 2: embodiment 1 makes
| Composition proportion (weight ratio) | Specific surface area (m 2/m 3) | Wet density (kg/m 3) | Average diameter of particles (mm) | Particle mean length (mm) |
| Rubber powder (40 order): volcanics stone flour (20 order): tackiness agent=100: 10: 25 | 1480 | 1.012 | 6.0 | 8.0 |
Draw through filler research trial repeatedly: rubber powder (40 order): volcanics stone flour (20 order): tackiness agent=100: 10: 25 is optimization formula, the packing specific area maximum of under this prescription, producing, can perch living space widely to microorganism is provided, and its wet density is approaching than the density of water, its good fluidity.
The suspended particle that embodiment 1 is made is used for 10000m
3/ d handles the city domestic sewage of the water yield and handles, and has obtained good purifying water effect.Table 3 has provided concrete water inlet and effluent quality situation.
The floating stuffing that table 3: embodiment 1 makes is used for the Inlet and outlet water water quality that city domestic sewage is handled
| Project | Average water inlet index (mg/l) | Effluent index (mg/l) | Average removal rate |
| COD Cr | 450 | 40 | 92％ |
| BOD 5 | 220 | 22 | 90％ |
| SS | 32 | 5 | 85％ |
| NH 3-N | 58 | 8 | 86％ |
| T-P | 2 | 0.5 | 75％ |
Embodiment 2
Present embodiment adopts with embodiment 1 identical method and makes floating stuffing, and difference is that the parameters of the floating stuffing that present embodiment makes is as shown in table 4.
The technical parameter of the floating stuffing that table 4: embodiment 2 makes
| Composition proportion (weight ratio) | Specific surface area (m 2/m 3) | Wet density (kg/m 3) | Average diameter of particles (mm) | Particle mean length (mm) |
| Rubber powder (40 order): volcanics stone flour (10 order): tackiness agent=90: 5: 20 | 1260 | 0.997 | 6.0 | 8.0 |
As shown in table 4, the granularity of the volcanics stone flour that present embodiment uses is 10 orders.Though present embodiment is little by 15% than the specific surface area of the filler that embodiment 1 makes, its wet density is also light than water, and this product still can reach the performance index of floating stuffing, is applicable to production, can be used for the city sewage deep treatment system.
Embodiment 3
Present embodiment adopts with embodiment 1 identical method and makes floating stuffing, and difference is that the parameters of the floating stuffing that present embodiment makes is as shown in table 5.
The technical parameter of the floating stuffing that table 5: embodiment 3 makes
| Composition proportion (weight ratio) | Specific surface area (m 2/m 3) | Wet density (kg/m 3) | Average diameter of particles (mm) | Particle mean length (mm) |
| Rubber powder (40 order): volcanics stone flour (10 order): tackiness agent=105: 15: 30 | 1400 | 1.023 | 6.0 | 8.0 |
As shown in table 5, it is little by 5% that the filler that present embodiment makes and the filler that embodiment 1 makes are compared specific surface area, and its wet density is heavier slightly than water, is applicable to the demand of different sewage treatment system.
Embodiment 4
Present embodiment adopts with embodiment 1 identical method and makes floating stuffing, and difference is that present embodiment is made sphere with floating stuffing, and the parameters of floating stuffing is as shown in table 6.
The technical parameter of the spherical suspending filling material that table 6: embodiment 4 makes
| Composition proportion (weight ratio) | Specific surface area (m 2/m 3) | Wet density (kg/m 3) | Average diameter of particles (mm) |
| Rubber powder (40 order): volcanics stone flour (20 order): tackiness agent=100: 10: 25 | 1450 | 1.005 | Φ5.5 |
The filler that present embodiment makes has identical prescription with the filler that embodiment 1 makes, and just the filler shape is done globulate.This Ball-type packing is little by 2% than the specific surface area of the described filler of table 2, and its wet density more near the density of water, therefore has better suspension property and flowing property.
Claims (9)
1. one kind is used for the floating stuffing that fluid bed biological film is handled, it is characterized in that, comprise following ingredients: rubber powder, volcanics stone flour and tackiness agent, described volcanic rock powder particles surface is positively charged, helps electronegative microbial bacteria briquetting own and growth; Weight ratio between described each composition is a rubber powder: the volcanics stone flour: tackiness agent=90～110: 5～20: 20～35.
2. floating stuffing as claimed in claim 1 is characterized in that, the weight ratio between described each composition is a rubber powder: the volcanics stone flour: tackiness agent=95～105: 5～15: 20～30.
3. floating stuffing as claimed in claim 1 is characterized in that the wet density of described floating stuffing is at 0.985kg/m
3To 1.028kg/m
3Scope in.
4. floating stuffing as claimed in claim 1 is characterized in that the specific surface area of described floating stuffing is at 1000m
2/ m
3To 1500m
2/ m
3Scope in.
5. floating stuffing as claimed in claim 1 is characterized in that, the granularity of described rubber powder is 30～50 orders; The granularity of described volcanics stone flour is 10～20 orders.
6. floating stuffing as claimed in claim 1 is characterized in that, the weight ratio between described each composition is a rubber powder: the volcanics stone flour: tackiness agent=100: 10: 25; The wet density of described floating stuffing is 1.012kg/m
3The specific surface area of described floating stuffing is: 1480m
2/ m
3
7. floating stuffing as claimed in claim 1 is characterized in that described tackiness agent is selected from one or more in ethylene-vinyl acetate copolymer, nylon or the thermoplastic polyester.
8. floating stuffing as claimed in claim 1 is characterized in that, described floating stuffing has cylindrical or spherical or flaky profile.
9. floating stuffing as claimed in claim 8 is characterized in that described floating stuffing has columniform profile, and described columniform diameter is 5～10mm, and length is 6～12mm, or has the spheric profile, and described spheric diameter is 5～10mm.
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| CN2009100771291A CN101462791B (en) | 2009-01-16 | 2009-01-16 | Suspending stuffing for processing fluid bed biological film |
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| CN2009100771291A CN101462791B (en) | 2009-01-16 | 2009-01-16 | Suspending stuffing for processing fluid bed biological film |
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| CN101462791B true CN101462791B (en) | 2011-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103395907B (en) * | 2013-08-20 | 2016-01-20 | 陈双喜 | A kind of method adopting waterproof and breathable sand to filter greasy dirt |
| CN105174615B (en) * | 2015-09-08 | 2017-12-22 | 大连碧水蓝天环保科技工程有限公司 | The processing unit and processing method of industrial wastewater |
| CN105233665A (en) * | 2015-09-23 | 2016-01-13 | 浙江富春紫光环保股份有限公司 | Combined filling material used for biological deodorization in sewage treatment plant |
| CN106336019A (en) * | 2016-10-15 | 2017-01-18 | 大连爱特流体控制有限公司 | Fluidized lamellar-membrane biological carrier packing |
| CN106904729A (en) * | 2017-03-29 | 2017-06-30 | 天津西敦津洋环保科技有限公司 | A kind of hybrid particles system and method for sewage disposal |
| CN108793417B (en) * | 2018-06-27 | 2019-05-07 | 江西夏氏春秋环境股份有限公司 | A kind of ecological floating island and preparation method thereof |
| CN112028229A (en) * | 2020-08-21 | 2020-12-04 | 武汉中科瑞华生态科技股份有限公司 | Novel biological filter sand and application thereof in flowing sand filter |
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