CN101774684B - Filter material for water treatment and preparation method and application thereof - Google Patents
Filter material for water treatment and preparation method and application thereof Download PDFInfo
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- CN101774684B CN101774684B CN2010101308878A CN201010130887A CN101774684B CN 101774684 B CN101774684 B CN 101774684B CN 2010101308878 A CN2010101308878 A CN 2010101308878A CN 201010130887 A CN201010130887 A CN 201010130887A CN 101774684 B CN101774684 B CN 101774684B
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- sticker
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 230000035939 shock Effects 0.000 claims abstract description 9
- 230000003179 granulation Effects 0.000 claims abstract description 8
- 238000005469 granulation Methods 0.000 claims abstract description 8
- 239000000706 filtrate Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 238000010907 mechanical stirring Methods 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010451 perlite Substances 0.000 abstract description 3
- 235000019362 perlite Nutrition 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000008188 pellet Substances 0.000 description 31
- 238000005516 engineering process Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 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 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 241000863032 Trieres Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 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
Landscapes
- Filtering Materials (AREA)
Abstract
The invention belongs to the field of environmental protection, and discloses a filter material for water treatment and a preparation method and application thereof. The filter material mainly adopts the following raw materials in parts by weight: 60-80 parts of fly ash, 0-20 part(s) of expanded perlite, 5-15 parts of binder and 5-50 parts of pore forming agent. The preparation method of the filter material mainly comprises mixing the raw materials, granulation, high-temperature shock heating of wet material balls to generate water vapor so that the material balls can expand to form pores, formation, high-temperature sintering and curing, and mechanical agitation for increase of holes on the surface. The filter material can be used for biological water treatment, and can be particularly used as a filter material for the biological aerated filter.
Description
Technical field
The invention belongs to the environmental protection field, relate to a kind of filter material for water treatment, be mainly used in Industrial Wastewater Treatment and aspect, urban sewage purification, in the biomembrance process water treatment procedure, as the filtrate in the BAF.
Background technology
China's water is seriously polluted, and water quality degenerates, and the Sustainable development of directly influence economy and people's is healthy, and especially organic pollutant has quickened the growth and breeding of algae substances in the water body, and water body is worsened fast.Biological water technology is applicable to Industrial Wastewater Treatment and urban sewage purification, is particularly useful for handling organic waste water.It is the sewage treatment process that rises at the end of the eighties and the beginning of the nineties that BAF (BAF) is disposed of sewage, widely popular America and Europe and Japan.In recent years, China has also launched research to BAF technology.As biomembranous carrier, filtrate is the core integral part of BAF, influences the operation control and the treatment effect of this technology.Therefore, filtrate is significant for applying of biological aerated filter process.
Advantages such as ceramic grain filter has light weight porous, surface irregularity, specific surface area is big, bio-film colonization is easy, intensity is high, anti-flushing, filtering velocity is high, loss of head is little, do not stop up are with a wide range of applications.Ceramic grain filter receives more and more closer concern because of its cheap price and excellent performance, especially utilizes mikrobe that the organic pollutant in the water is adsorbed in the BAF of handling with oxygenolysis and is bringing into play important effect.Flyash is industrial residue, if can mainly utilize flyash to produce biofilter material, both can environmental protection, and can economize on resources again.
Baking ceramsite must possess two pacing itemss: high temperature can produce suitable viscosity and surface tension down, makes pellet softening; Chemical reaction takes place, and produces an amount of gas.Traditional sintering process is: under 1000-1200 ℃ high temperature, material is near molten state, and pellet is softening; Carbon dust or organic additive burning, pyrolytic decompositions such as inorganic salt such as lime carbonate, the gas of generation expands, and part is overflowed formation expansion porous pellet.The traditional technology temperature requirement is high, and heat-up time is long, consumes the more energy; Additive increases cost, and discharge the gas contamination atmosphere.Require pellet dry before the high temperature sintering, in 200-500 ℃ of scope, discharge combination water and volatile component, moisture is regarded " unfavorable composition ".During high temperature sintering, requirement guarantees that as far as possible pellet is softening and gets angry and carry out simultaneously, increased operation easier.
Summary of the invention
The purpose of this invention is to provide that a kind of cost is low, save energy, easily manufactured filter material for water treatment.
Another object of the present invention provides the preparation method of this filter material for water treatment.
A further object of the invention provides the purposes of this filter material for water treatment.
The objective of the invention is to realize through following technical proposal:
A kind of filter material for water treatment, this filtrate mainly adopts the raw material of following weight part:
Flyash 60-80 part, pearlstone 0-20 part, sticker 5-15 part, 5～50 parts of pore-forming materials.
Described filtrate, wherein sticker is a water glass, pore-forming material is a water.
The preparation method of said filtrate, this method may further comprise the steps:
(1) raw materials mix, granulation: get flyash 60-80 part by weight, pearlstone 0-20 part, sticker 5-15 part, 5～50 parts of pore-forming materials mix sticker earlier with an amount of pore-forming material, mix granulation with all the other compositions again;
(2) expansion molding: wet granular directly is put into shock heating expansion in the hot environment, and expansion temperature 300-900 ℃, time 2-10 minute;
(3) hot setting: the particle behind the expansion molding was through 900-1000 ℃ of roasting 2-10 minute;
(4) mechanical stirring: the particle behind the hot setting carries out mechanical stirring, makes particle surface thin-walled small bubbles broken, increases perforate, promptly gets.
The application of described filtrate in biological water treatment is particularly as the application of filtrate in the BAF.
Below be the detailed description of technical scheme of the present invention:
Flyash is industrial residue, utilization of waste material, and cost is low, increases its weight percentage in batching as far as possible.Under normal conditions, its fineness≤0.074mm.
Pearlstone, fineness scope 0.075～0.180mm, powder is thicker, mixes in the flyash, helps increasing the plasticity-(during granulation, pellet is soft, is easy to dilatational strain, prevents that again pellet is soft excessively, is difficult for spheroiding) of particle (also weighing ball).Pearlstone begins to expand about 900 ℃; Can reduce the inner dense structure of pellet to a certain extent; Reduce its density, and little (shape substantially and constitutional features confirmed, it can be the too densification of avoiding in the structure of hole wall that the perlite after 900 ℃ expands to the intensity effect of material when the 400-700 ℃ of left and right sides; Control perlitic content and fineness well, can not cause the pellet spalling; More than 900 ℃; Pellet also can soften once more, can bear certain structure and change, and 900-1000 ℃ of roasting can let hole wall fine and close more firm; May cause simultaneously the contraction of hole wall, be embedded in perlite on the hole wall structure that the contraction of offsetting hole wall brings that expands and shrink).
Water glass is made sticker, can guarantee that pellet is easy to softening transform when heat build-up is expanded, and is difficult for bursting.
Flyash and pearlstone thorough mixing add the sodium silicate aqueous solution for preparing, and fully stir.Marumerizer directly tumbles warm pellet in the High Temperature Furnaces Heating Apparatus.Keep fire box temperature moderate, temperature Tai Gaotai is low all not too to be beneficial to the pellet expansion molding, and temperature is controlled at 300-900 ℃ generally speaking, preferably in 400-700 ℃ of scope.The pellet expansion molding time is shorter, and the pellet of expansion molding stopped 2-10 minute in stove, can accomplish the primary solidification of pellet.The wet feed ball has plasticity-and anti-capillary ability, under relatively lower temp, and the steam expansion pore-creating of shock heating generation, energy-saving and emission-reduction increase operability.Key of the present invention is embodied in the shock heating water vapor expansion pore-creating moulding process.
Pellet drops into the High Temperature Furnaces Heating Apparatus roasting, is advisable roasting time 2-10 minute for furnace temperature 900-1000 ℃.Too high maturing temperature and long roasting time can make pellet surface knot glaze.After the high-temperature roasting, naturally cooling.There is the thin-walled bubble on cooled pellet surface, puts into stirrer and stirs slightly, and the small bubbles on broken pellet surface increase surperficial perforate and roughness, increase specific surface area.
Beneficial effect of the present invention:
Filter material for water treatment provided by the invention is a main raw material with industrial residue flyash, is fired by special technology to form.The present invention adopts the wet feed ball to carry out the shock heating heating of high temperature, and the water in the pellet becomes water vapor rapidly, makes pellet expansion pore-creating, forms vesicular structure.The present invention carries out utilization of waste material to flyash, and adopts water vapor expansion pore-creating, need not carry out drying in advance to pellet, need not to use additive, and has overcome the shortcomings such as the energy that conventional sintering method temperature requirement is high, heat-up time is long, consumption is more.The particle performance testing index, and in the water treatment procedure, reducing COD and removing NH
3-N aspect has obtained very ideal effect, COD and NH
3The clearance of-N is all more than 90%.The raw materials cost that the present invention adopts is low, and the preparation method is simple, energy-conserving and environment-protective, and the water treatment effect is better, has the good industrial application prospect, is particularly suitable for as filtrate in the BAF.
Embodiment
Below through embodiment the present invention is done further elaboration.
Every weight part is 100g in following examples.
Embodiment 1
Raw material (by weight): 80 parts in flyash, 20 parts of pearlstones, 9 parts of water glass, 21 parts in water.
The prepare silicon acid sodium aqueous solution, concentration 30wt%.Flyash and pearlstone thorough mixing add sodium silicate solution, fully stir.Marumerizer, particle diameter 6～8mm, wet feed ball render in 500 ℃ of High Temperature Furnaces Heating Apparatuss, constant temperature 10 minutes, the shock heating heating of wet feed ball warp high temperature produces water vapor and makes pellet expansion pore-creating, moulding.Pellet is rendered in 950 ℃ the High Temperature Furnaces Heating Apparatus, roasting 5 minutes.Naturally cool to room temperature after coming out of the stove.Cooled pellet is put into whisking appliance stir a moment, make pellet surface small bubbles broken, form perforate.
Tap density, apparent density, wear rate and surface-area are measured according to the method that standard C J/T299-2008 provides.Granule strength is to be measured by ZQJ-II intelligence granule strength trier.
| Characteristic parameter | Test result | Index |
| Tap density | 0.60g/cm 3 | |
| Apparent density | 1.05g/cm 3 | |
| Wear rate | 2.3％ | ≤6％ |
| Surface-area | 2.8×10 4cm 2/g | ≥0.5×10 4cm 2/g |
| Granule strength | 142N/ |
Filtrate is deposited in the filled column, and packing layer highly is 1m approximately, and vexed exposing to the sun carried out bio-film colonization with active sludge, hangs about 3-7 of film time days, hangs the membrane efficiency height.Former water COD=705.4mg/L, NH
3-N=35.8mg/L.26 ℃ of envrionment temperatures, the waste water filled column of flowing through from bottom to top, hydraulic detention time 1h, aeration, GWR=10: 1.Water outlet COD=21.6mg/L, NH
3-N=0.9mg/L, clearance are respectively 96.9.0% and 97.5%.
Embodiment 2
Raw material (by weight): 80 parts in flyash, 10 parts of pearlstones, 10 parts of water glass, 30 parts in water.
The prepare silicon acid sodium aqueous solution, concentration 25wt%.Flyash and pearlstone thorough mixing add sodium silicate solution, fully stir.Marumerizer, particle diameter 6～8mm, wet feed ball render in 550 ℃ of High Temperature Furnaces Heating Apparatuss, constant temperature 10 minutes, the shock heating heating of wet feed ball warp high temperature produces water vapor and makes pellet expansion pore-creating, moulding.The cooling of coming out of the stove, pellet are rendered in 975 ℃ the High Temperature Furnaces Heating Apparatus, roasting 3 minutes.Naturally cool to room temperature after coming out of the stove.With cooled pellet, put into whisking appliance and stir a moment, make pellet surface small bubbles broken, form perforate.
Tap density, apparent density, wear rate and surface-area are measured according to the method that standard C J/T299-2008 provides.Granule strength is to be measured by ZQJ-II intelligence granule strength trier.
| Characteristic parameter | Test result | Index |
| Tap density | 0.57g/cm 3 | |
| Apparent density | 1.06g/cm 3 | |
| Wear rate | 2.0％ | ≤6％ |
| Surface-area | 2.4×10 4cm 2/g | ≥0.5×10 4cm 2/g |
| Granule strength | 150N/ |
Filtrate is deposited in the filled column, and packing layer highly is 1m approximately, and vexed exposing to the sun carried out bio-film colonization with active sludge, hangs about 3-7 of film time days, hangs the membrane efficiency height.Former water COD=605.3mg/L, NH
3-N=30.5mg/L.28 ℃ of envrionment temperatures, the waste water filled column of flowing through from bottom to top, hydraulic detention time 1h, aeration, GWR=10: 1.Water outlet COD=18.5mg/L, NH
3-N=0.8mg/L, clearance are respectively 97.0% and 97.4%.
Claims (4)
1. filter material for water treatment is characterized in that this filtrate mainly adopts the raw material of following weight part:
Flyash 60-80 part, pearlstone 0-20 part, sticker 5-15 part, 5～50 parts of pore-forming materials;
Wherein: sticker is a water glass, and pore-forming material is a water;
This filtrate prepares through following method:
(1) raw materials mix, granulation: get flyash 60-80 part by weight, pearlstone 0-20 part, sticker 5-15 part, 5～50 parts of pore-forming materials mix sticker earlier with an amount of pore-forming material, mix granulation with all the other compositions again;
(2) expansion molding: wet granular directly is put into shock heating expansion in the hot environment, and expansion temperature 300-900 ℃, time 2-10 minute;
(3) hot setting: the particle behind the expansion molding was through 900-1000 ℃ of roasting 2-10 minute;
(4) mechanical stirring: the particle behind the hot setting carries out mechanical stirring, makes particle surface thin-walled small bubbles broken, increases perforate, promptly gets.
2. the preparation method of filtrate according to claim 1 is characterized in that this method may further comprise the steps:
(1) raw materials mix, granulation: get flyash 60-80 part by weight, pearlstone 0-20 part, sticker 5-15 part, 5～50 parts of pore-forming materials mix sticker earlier with an amount of pore-forming material, mix granulation with all the other compositions again;
(2) expansion molding: wet granular directly is put into shock heating expansion in the hot environment, and expansion temperature 300-900 ℃, time 2-10 minute;
(3) hot setting: the particle behind the expansion molding was through 900-1000 ℃ of roasting 2-10 minute;
(4) mechanical stirring: the particle behind the hot setting carries out mechanical stirring, makes particle surface thin-walled small bubbles broken, increases perforate, promptly gets.
3. the application of the described filtrate of claim 1 in biological water treatment.
4. application according to claim 3 is characterized in that this application is as filtrate in the BAF with the described filtrate of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101308878A CN101774684B (en) | 2010-03-23 | 2010-03-23 | Filter material for water treatment and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101308878A CN101774684B (en) | 2010-03-23 | 2010-03-23 | Filter material for water treatment and preparation method and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101774684A CN101774684A (en) | 2010-07-14 |
| CN101774684B true CN101774684B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101308878A Expired - Fee Related CN101774684B (en) | 2010-03-23 | 2010-03-23 | Filter material for water treatment and preparation method and application thereof |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060457B (en) * | 2010-11-30 | 2012-09-05 | 哈尔滨工业大学 | Method for manufacturing filter material for biological aerated filter by utilizing waste fly ash and waste coal gangue |
| CN102258913B (en) * | 2011-06-10 | 2013-07-17 | 谭海燕 | Low-density ceramsite filter material for biological aerated filter, and preparation method thereof |
| CN102350135B (en) * | 2011-08-08 | 2013-09-18 | 杰成纯水设备科技(太仓)有限公司 | Production method of pearlite filter element |
| CN102786191A (en) * | 2012-07-13 | 2012-11-21 | 哈尔滨工业大学 | Method for preparing water treatment filter material by using waterworks sludge and sewage sludge |
| CN103482754B (en) * | 2013-08-29 | 2016-03-30 | 华侨大学 | A kind of preparation method of Shell ceramsite biological carrier |
| CN106512551B (en) * | 2016-12-12 | 2018-09-21 | 浙江工业大学 | For the amino functional repeat glass filtrate of water process and its preparation and application |
| CN108558368A (en) * | 2018-06-13 | 2018-09-21 | 徐州世润德环保科技有限公司 | Multiporous biological filtrate and preparation method thereof |
| CN108863310A (en) * | 2018-06-15 | 2018-11-23 | 徐州世润德环保科技有限公司 | Fiber micropore biological filtrate and preparation method thereof |
| CN114751765B (en) * | 2022-03-24 | 2022-12-09 | 安徽能泰高科环保技术有限公司 | Porous biological filter material for biological aerated filter and preparation method thereof |
| CN115181716A (en) * | 2022-06-25 | 2022-10-14 | 广西七彩环境科技有限公司 | Method for culturing and propagating target microorganisms by using porous nonmetallic mineral material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1285335A (en) * | 2000-09-29 | 2001-02-28 | 唐山陶瓷集团有限公司 | Process for preparation of foam ceramic spherulite |
| JP3894732B2 (en) * | 2001-02-14 | 2007-03-22 | 株式会社カワシマ | Porous ceramic particles and method for producing the same |
| CN1369464A (en) * | 2001-02-15 | 2002-09-18 | 王泽生 | Powdered coal powder-pearlite haydite and its preparing process |
| CN100355671C (en) * | 2003-07-24 | 2007-12-19 | 中国地质科学院成都矿产综合利用研究所 | Novel filter material used in process of bio-aeration filter tank |
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