CN100569333C - Composite filtering material for activating and regenerating coal ash and manufacture method thereof - Google Patents
Composite filtering material for activating and regenerating coal ash and manufacture method thereof Download PDFInfo
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- CN100569333C CN100569333C CNB2007101919367A CN200710191936A CN100569333C CN 100569333 C CN100569333 C CN 100569333C CN B2007101919367 A CNB2007101919367 A CN B2007101919367A CN 200710191936 A CN200710191936 A CN 200710191936A CN 100569333 C CN100569333 C CN 100569333C
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Abstract
The invention discloses a kind of composite filtering material for activating and regenerating coal ash and manufacture method thereof, belong to water-treatment technology field, it is that the porous aluminum silicate mixed-powder of 80～90 parts, particle diameter 〉=80 purpose flyash or ashes and 10～20 parts is formed by weight portion, described flyash or ashes are bonded to particle diameter less than 8 millimeters graininess, and described porous aluminum silicate mixed-powder is wrapped in the surface of flyash or ashes and forms the porcelain layer that has the absorption micropore that communicates with kernel through sintering.Form through step manufacturings such as raw material stirring, a granulation, secondary granulation, oven dry, roastings, it is low to have a cost, the advantage of good purification.
Description
Technical field
The present invention relates to a kind of water treatment medium material, especially a kind of can the purification to industrial wastewater, make its reach pollution emission standard, be the filter material for water treatment that primary raw material is made with the flyash of the deposition in the coal-fired chimney or ashes, specifically a kind of composite filtering material for activating and regenerating coal ash and manufacture method thereof.
Background technology
In the long river of human history, human and environment is to develop under a kind of harmonious state of sharing weal and woe.Arrived after the industrial revolution, particularly after the World War II, society enters the development of modernization stage.This harmony has thoroughly been broken, the resource utilization of being overdrawed, and environmentally harmful various waste water,wastes gas and industrial residue dash scolds the face of land, causes pollution extremely.Broken natural balance, it is a kind of in self healthy totally unfavorable environment to make the people in a lot of areas live in.
In above-mentioned various pollutions, especially contaminated water source endangers the most to the mankind, because water is Source of life.Do not had healthy water source, the growth of the growth of plant, biology, mankind itself drinking and using, and all are subjected to great injury, have caused this disastrous effect that the human animals and plants that depend on for existence are caused a disease, drinking water causes a disease.So to the pollution of the administering water particular importance that seems.
Is nature by what kind of pattern self to purify and do not pollute before the industrial revolution? discover that the earth itself just has very strong purification function, what wherein effect was maximum is exactly soil and vegetation; In soil, some micropore aluminium silicate minerals have very strong absorption (comprising ion-exchange) effect.Can remove the harmful element in the water, apparent to the adsorption effect Temin of inorganic matter, and vegetation is rich in the carbonaceous element, preferable to the organic matter adsorption effect.The effect essence of soil vegetative cover is exactly to have the aluminium silicate mineral of strong adsorptivity and the acting in conjunction of being rich in carbonaceous material.
Yet at present, the main filtrate of using has PP cotton, RO film, KDF pltine, activated alumina, quartz sand etc. in the water treatment field.These raw materials are not to exist the life-span short, exist adsorption effect relatively poor exactly, or the use cost height, and are comparatively serious to the waste of water, though can be directly used in the filtration of drinking water as the RO film, it must regularly carry out backwash, wastes a large amount of water.Other can only be used for the primary filter of waste water as quartz sand, can't directly reach discharge standard, must be equipped with the processing that the very high auxiliary equipment of cost could realize waste water, thereby cause cost of water treatment too high, some illegal owners are in order to reduce cost, often a large amount of waste water are directly entered in the pool of river, rivers and lakes, cause serious ecological problem.
Therefore developing a kind of filtrate that contains aluminium silicate mineral is to solve the preferred plan that the current industrial water pollutes.
Meanwhile need burn a large amount of coal to obtain heat energy every day in petrochemical industry, smelting, thermal power generation corporations, also need to handle a large amount of industrial wastewaters simultaneously every day, can produce a large amount of flyash in the coal burning process in chimney, the Main Ingredients and Appearance of this flyash has the SiO of the water treatment of can be used as with mineral matter
2, Al
2O
3, FeO, Fe
2O
3, MgO, CaO, MnO etc., also contain 5～30% the right side carbon simultaneously in the flyash as activating agent.These industries can not be used to flyash, and have to utilize a large amount of water to go to remove in order to remove flyash, cause new pollution, if therefore original flyash as discarded object can be used, make full use of its active component, it is manufactured water treatment mineral filtrate, not only solved the pollution problem of coal burning process, and can be their water treatment filter material extensive, with low cost of supplying raw materials, reduce pollute in, greatly reduce operating cost.
Summary of the invention
The objective of the invention is a large amount of flyash to be underutilized and easily cause environmental pollution at existing coal-fired enterprise, the too high problem of filter material for water treatment cost simultaneously, invent a kind ofly with flyash be that the cost made of primary raw material is low, the composite filtering material for activating and regenerating coal ash and the manufacture method thereof of good purification and energy activating and regenerating.
Technical scheme of the present invention is:
A kind of composite filtering material for activating and regenerating coal ash, it is characterized in that it is that the porous aluminum silicate mixed-powder of 80～90 parts, particle diameter 〉=80 purpose flyash or ashes and 10～20 parts is formed by weight portion, described flyash or ashes are bonded to particle diameter less than 8 millimeters graininess, and described porous aluminum silicate mixed-powder is wrapped in the surface of flyash or ashes and forms the porcelain layer that has the absorption micropore that communicates with kernel through sintering.
Described porous aluminum silicate mixed-powder is made up of the kaolin of 60～70 weight portions, the attapulgite of 25～35 weight portions and the diatomite of surplus.
Composite filtering material for activating and regenerating coal ash of the present invention is spherical particle, is distributed with a large amount of absorption micropores that communicate with kernel through sintering passivation rear surface.
A kind of manufacture method of composite filtering material for activating and regenerating coal ash is characterized in that:
At first, from sedimentation basin, flyash or ashes are pulled out the draining airing;
Secondly, in the flyash of above-mentioned draining airing or ashes, add the binding agent mixing and stirring;
The 3rd, in comminutor, throw in manufactured small nut (can adopt the very little small nut of being made by the mixture of kaolin and concavo-convex rod of particle diameter, its effect is the seed as granulation);
The 4th, the above-mentioned binding agent and the flyash that stirs or ashes of being added with sent into that granulation obtains fly ash grain in the comminutor;
The 5th, continue in the above-mentioned comminutor that has formed fly ash grain, to add porous aluminum silicate mixed-powder, make it form shell at the particle core surface;
The 6th, the above-mentioned prepared particle that has shell is dried 3～4 hours down to remove moisture at 150～200 ℃;
The 7th, the particle of above-mentioned oven dry is placed the vacuum baking kiln roasting, the control furnace temperature is between 700～900 ℃, and roasting time is controlled at the spherical composite filtering material for activating and regenerating coal ash that obtains surface passivation between 2～5 hours and have a large amount of holes.
Beneficial effect of the present invention:
1, to have a cost of material lower in the present invention, wide material sources, all be that natural material is made, itself can not produce human body and environment injurious effects, it has not only solved the processing of the flyash of puzzlement burning enterprise, and can gather materials on the spot, the production problem of the water treatment filter material of settling a dispute by the parties concerned themselves reduces operating cost.
2, can be used for the filtration of industrial wastewater when the diameter of filtering material particle of the present invention during at 5～8 millimeters, be particularly useful for the processing of the bigger waste water of content of beary metal.
3, the great advantage of filtrate of the present invention also is the activation that it can realize filtrate by the secondary heating roasting, and filtrate can use repeatedly, and can not exert an influence to result of use.Main body has been selected environment amenable natural material for use, and the final discarded object that recycles is a kind of good fertilizer (kind of a grass is particularly suitable for growing flower), and the building materials of also can be used as brickmaking, building the road use, and environment is not had influence.
Adsorption filtration synergy when 4, the present invention is by purification of water quality, aperture changes from the micron order to the nanoscale in the filtrate, can filter most bacteriums and inorganic pollution in the water quality.The Si that be rich on the surface, Al, Mg and little Ca, Fe, Zn, Sr dissolve in the water favourable to health, and the carbon dust particulate in the flyash has very strong affinity to various organic pollutions.Inorganic organic synergy reaches the effect of superior water purifying matter.
5, filtrate of the present invention is that the emulation that soil self purifies is reproduced.Mineral chemistry character most in the soil is relatively stable, mainly contains quartz sand and other particles, and clay mineral kind occupies significant proportion, as kaolin families; Smectites and illite class; Be the thin slice layer structure; Vesicular structure, the chemical stability height has ion-exchange and absorbent properties.As containing organic matter or humus in the soil, its absorption property is stronger.This is because contain a large amount of charcoals in organic matter or the humus, and is favourable to adsorbing organic class material.
6, the present invention also can develop corresponding pointed filtrate according to the water quality at different water sources, and table 1 filtrate of the present invention is the plain edition filtrate of foundational development, and table 2 is and utilizes the special type filtrate of filtrate of the present invention for foundational development.
Table 1
| Title | Shape | Particle diameter (mm) | Function |
| Composite filtering material for activating and regenerating coal ash (NWL) | Spherical | 3.5-5.5 | Remove inorganic pollution and bacterium in the water |
| Carbonaceous composite filtering material for activating and regenerating coal ash (TNWL) | Spherical | 4.5-7 | Remove organic and inorganic pollution, bacterium and microorganism in the water |
| Charcoal ball (TG) | Spherical | 5-8 | Remove organic pollution and bacterium and microorganism in the water |
Table 2
| Title | Shape | Particle diameter | Function |
| Defluorination type (F) F-NWL | Spherical | ±5 | Remove fluorine (CF) and other inorganic pollutions and bacterium in the water |
| Arsenic removal type (As) NWL | Spherical | ±5 | Remove arsenic (AS) and other inorganic pollutions and bacterium in the water |
| Removing of iron and manganese (Fe Mn) type Fe.Mn-NWL | Spherical | ±5 | Remove ferrimanganic ((Fe Mn) and other inorganic pollutions and bacterium in the water |
7, the physical features (table 3) of filtrate of the present invention
Table 3
8, through actual test result, composite filtering material for activating and regenerating coal ash of the present invention also has following characteristics:
Near nature, closely similar in mineral assemblage with natural original soil.
The various indexs of soak test meet relevant criterion, and the filtrate that can purify water uses.
Filtrate of the present invention also has bigger crack degree, specific area and iodine sorption value, and its amount is tens times of common quartz sands even hundreds of times, advantages of good adsorption effect, long service life.Be that identical former mineral grain is compared, its surface has also obtained increase in various degree.
The formed ceramic frame configuration of filtrate of the present invention is stable, adsorbs filtrate after saturated and can reactivate and recycle, and generally can use 4～5 times, and conserve water processing cost so greatly meets the policy of recycling economy.
9, filtrate of the present invention through granulation and surface passivation after, structure is careful, strong shock resistance does not influence the colourity and the dirty degree of water.
10, because the Main Ingredients and Appearance of filtrate of the present invention is the complex of aluminosilicate and charcoal, be inorganic organic synergy, can remove comprehensively the inorganic and organic matter in the water body.
11, structure of the present invention is careful, and inner frame is stable, adsorb can reactivate use after saturated, generally can use 4-5 time, greatly reduces use cost, the minimizing waste material.
12, this filtrate finally can be used as fertilizer or construction material use, meets the requirement of recycling economy.
13, produce filtrate with carbonaceous flyash, turn waste into wealth, meet national industrial policies, benefit the nation and the people.
The specific embodiment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment one.
A kind of composite filtering material for activating and regenerating coal ash, it adopts following method manufacturing to form.
At first, from sedimentation basin will flyash or ashes pull out, the draining airing is got weight 800kg, described flyash or ashes preferentially adopt the flue reclaiming type and through sedimentation basin precipitation, particle diameter should 〉=80 orders, particle diameter is the smaller the better during actual the manufacturing;
Secondly, add the binding agent mixing and stirring in the flyash of above-mentioned draining airing or ashes, it is about 5% natron flower (being waterglass) that binding agent can adopt concentration, and the consumption of binding agent requires to be advisable to satisfy granulation;
Once more, in comminutor, throw in manufactured small nut, this small nut both can adopt comminutor small nut commonly used, also can adopt by 70% kaolin and 30% concavo-convex rod and the prefabricated small nut of binding agent, its effect is the basis as granulation, and final fly ash grain must form on the surface of small nut, also has only when having small nut in the grain-making machine, just can finish granulation process, down together;
The 4th, the above-mentioned binding agent and the flyash that stirs or ashes of being added with sent into that granulation obtains fly ash grain in the comminutor;
The 5th; continuation adds 200kg in the above-mentioned comminutor that has formed fly ash grain porous aluminum silicate mixed-powder carries out secondary granulation; make it form shell, obtain the passivation particle for the treatment of that particle diameter is not more than 8 millimeters (the best material when being used for wastewater treatment directly is 5～8 millimeters) at the particle core surface.200kg is mixed by the kaolin powder of 120kg, the attapulgite powder of 70kg and the diatomite powder of 10kg;
The 6th, the above-mentioned prepared particle that has shell is dried 3～4 hours down with further removal moisture at 150～200 ℃;
The 7th, the particle of above-mentioned oven dry is placed the vacuum baking kiln roasting, the control furnace temperature is between 700～900 ℃, and roasting time is controlled at the spherical composite filtering material for activating and regenerating coal ash that obtains surface passivation (being equivalent at surface formation ceramic layer) between 2～5 hours and have a large amount of holes.
Embodiment two.
A kind of composite filtering material for activating and regenerating coal ash, it adopts following method manufacturing to form.
At first, from sedimentation basin will flyash or ashes pull out, the draining airing is got weight 900kg, described flyash or ashes preferentially adopt the flue reclaiming type and through sedimentation basin precipitation, particle diameter should 〉=80 orders, particle diameter is the smaller the better during actual the manufacturing;
Secondly, add the binding agent mixing and stirring in the flyash of above-mentioned draining airing or ashes, it is about 5% natron flower (being waterglass) that binding agent can adopt concentration, and the consumption of binding agent requires to be advisable to satisfy granulation;
Once more, in comminutor, throw in manufactured small nut;
The 4th, the above-mentioned binding agent and the flyash that stirs or ashes of being added with sent into that granulation obtains fly ash grain in the comminutor;
The 5th; continuation adds the porous aluminum silicate mixed-powder (being equivalent to carry out secondary granulation) of 100kg in the above-mentioned comminutor that has formed fly ash grain; make it form shell, obtain the passivation particle for the treatment of that particle diameter is not more than 8 millimeters (the best material when being used for wastewater treatment directly is 5～8 millimeters) at the particle core surface.100kg is mixed by the kaolin powder of 70kg, the attapulgite powder of 25kg and the diatomite powder of 5kg;
The 6th, the above-mentioned prepared particle that has shell is dried 3～4 hours down with further removal moisture content at 150～200 ℃;
The 7th, the particle of above-mentioned oven dry is placed the vacuum baking kiln roasting, the control furnace temperature is between 700～900 ℃, and roasting time is controlled at the spherical composite filtering material for activating and regenerating coal ash that obtains surface passivation (being equivalent at surface formation ceramic layer) between 2～5 hours and have a large amount of holes.
Embodiment three.
A kind of composite filtering material for activating and regenerating coal ash, it adopts following method manufacturing to form.
At first, from sedimentation basin will flyash or ashes pull out, the draining airing is got weight 850kg, described flyash or ashes preferentially adopt the flue reclaiming type and through sedimentation basin precipitation, particle diameter should 〉=80 orders, particle diameter is the smaller the better during actual the manufacturing;
Secondly, add the binding agent mixing and stirring in the flyash of above-mentioned draining airing or ashes, it is about 5% natron flower (being waterglass) that binding agent can adopt concentration, and the consumption of binding agent requires to be advisable to satisfy granulation;
Once more, in comminutor, throw in manufactured small nut;
The 4th, the above-mentioned binding agent and the flyash that stirs or ashes of being added with sent into that granulation obtains fly ash grain in the comminutor;
The 5th; continuation adds the porous aluminum silicate mixed-powder of 150kg in the above-mentioned comminutor that has formed fly ash grain; make it form shell (being equivalent to carry out secondary granulation), obtain the passivation particle for the treatment of that particle diameter is not more than 8 millimeters (the best material when being used for wastewater treatment directly is 5～8 millimeters) at the particle core surface.150kg is mixed by the kaolin powder of 97kg, the attapulgite powder of 45kg and the diatomite powder of 8kg;
The 6th, the above-mentioned prepared particle that has shell is dried 3～4 hours down with further removal moisture at 150～200 ℃;
The 7th, the particle of above-mentioned oven dry is placed the vacuum baking kiln roasting, the control furnace temperature is between 700～900 ℃, and roasting time is controlled at the spherical composite filtering material for activating and regenerating coal ash that obtains surface passivation (being equivalent at surface formation ceramic layer) between 2～5 hours and have a large amount of holes.
If find that in use filter effect descends, can make it recover active with carrying out roasting once more after the filtrate taking-up oven dry.
Following table is that filtrate of the present invention and traditional filter material are used the comparing result table aspect wastewater treatment.
| Sequence number | The filtrate title | Handle consuming time | Bacterial content | Escherichia coli | Whether up to standard | The waste water ratio | Cost performance |
| 1 | The present invention | Short | Do not have less, | Do not have | Be | Low | High |
| 2 | Quartz sand | Short | Have | Have | Not | Low | High |
| 3 | The RO film | Long | Do not have | Do not have | Be | High | Low |
| 4 | The PP cotton | Long | Few | Few | Not | Higher | Lower |
| 5 | The KDF pltine | Short | Few | Few | Be | Low | Low |
| 6 | Activated alumina | Short | Few | Few | Not | Low | Low |
Claims (5)
1, a kind of composite filtering material for activating and regenerating coal ash, it is characterized in that it is that the porous aluminum silicate mixed-powder of 80～90 parts, particle diameter 〉=80 purpose flyash or ashes and 10～20 parts is formed by weight portion, described flyash or ashes are bonded to particle diameter less than 8 millimeters spherical particle, and described porous aluminum silicate mixed-powder is wrapped in the surface of flyash or ashes and forms the porcelain layer that has the absorption micropore that communicates with kernel through sintering.
2, composite filtering material for activating and regenerating coal ash according to claim 1 is characterized in that it is spherical particle, is distributed with a large amount of absorption micropores that communicate with kernel through sintering passivation rear surface.
3, the manufacture method of the described composite filtering material for activating and regenerating coal ash of a kind of claim 1 is characterized in that:
At first, from sedimentation basin, flyash or ashes are pulled out the draining airing;
Secondly, in the flyash of above-mentioned draining airing or ashes, add the binding agent mixing and stirring;
Once more, in comminutor, throw in manufactured small nut;
The 4th, the above-mentioned binding agent and the flyash that stirs or ashes of being added with sent into that granulation obtains fly ash grain in the comminutor;
The 5th, continue in the above-mentioned comminutor that has formed fly ash grain, to add porous aluminum silicate mixed-powder, make it form shell at the particle core surface;
The 6th, the above-mentioned prepared particle that has shell is dried 3～4 hours down to remove moisture at 150～200 ℃;
The 7th, the particle of above-mentioned oven dry is placed the vacuum baking kiln roasting, the control furnace temperature is between 700～900 ℃, and roasting time is controlled at the spherical composite filtering material for activating and regenerating coal ash that obtains surface passivation between 2～5 hours and have a large amount of holes.
4, the manufacture method of composite filtering material for activating and regenerating coal ash according to claim 3 is characterized in that described binding agent is that concentration is about 5% bubble flower alkali dilution.
5, the manufacture method of composite filtering material for activating and regenerating coal ash according to claim 3 is characterized in that described flyash or ashes are flue reclaiming type flyash or ashes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101919367A CN100569333C (en) | 2007-12-27 | 2007-12-27 | Composite filtering material for activating and regenerating coal ash and manufacture method thereof |
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|---|---|---|---|
| CNB2007101919367A CN100569333C (en) | 2007-12-27 | 2007-12-27 | Composite filtering material for activating and regenerating coal ash and manufacture method thereof |
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| CN101274172A CN101274172A (en) | 2008-10-01 |
| CN100569333C true CN100569333C (en) | 2009-12-16 |
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| CN116444290A (en) * | 2023-04-07 | 2023-07-18 | 上海中粼膜科技有限公司 | Rare earth improved fly ash ceramic membrane and preparation method thereof |
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- 2007-12-27 CN CNB2007101919367A patent/CN100569333C/en not_active Expired - Fee Related
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