CN109437962A - A kind of diatom base porous ceramics and preparation method thereof for sludge organism desiccation conditioner - Google Patents
A kind of diatom base porous ceramics and preparation method thereof for sludge organism desiccation conditioner Download PDFInfo
- Publication number
- CN109437962A CN109437962A CN201811315649.7A CN201811315649A CN109437962A CN 109437962 A CN109437962 A CN 109437962A CN 201811315649 A CN201811315649 A CN 201811315649A CN 109437962 A CN109437962 A CN 109437962A
- Authority
- CN
- China
- Prior art keywords
- sludge
- glass powder
- conditioner
- porous ceramics
- diatomite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 43
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 25
- 238000001035 drying Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000009264 composting Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 8
- 244000005700 microbiome Species 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002361 compost Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 230000001717 pathogenic effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052637 diopside Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000010564 aerobic fermentation Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 235000010204 pine bark Nutrition 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention describes a kind of diatom base porous ceramics and preparation method thereof for sludge organism desiccation conditioner.Diatom Quito hole ceramic preparation is as follows: using diatomite, glass powder, carbon dust as raw material, by sinter molding after precisely-proportioned mixing.Resulting finished product has capillary structure abundant, and saturated water absorption is up to 99.00%, the porosity 70.72%, bulk density 0.715g/cm3, compression strength 3.43MPa.Resulting finished surface is porous vitreous layer, and inside has netted capillary structure, has preferable intensity and wear-resisting property.Good with the associativity of sludge in sludge organism drying process, composting process easily forms particle, and system heating rate is very fast, and the single breakage rate of conditioner is easy to sieve, can be recycled less than 1%.
Description
Technical field
The diatom base porous ceramics and preparation method thereof that the present invention relates to a kind of for sludge organism desiccation conditioner.
Background technique
Currently, the processing disposal technology of China's sludge mainly has land use, landfill, burning etc..Land use is sludge
The typical way of recycling, the life that the nutrients such as the nitrogen being rich in, phosphorus, potassium and organic matter can increase soil fertility, promote crops
It is long, but the heavy metal and pathogen that contain in untreated sludge easily cause secondary pollution to soil and crop, and pass through food
Object chain eventually enters into human body, and there are great security risks.Landfill is the disposal technology that a development is more mature in international coverage,
There is the features such as small investment, capacity is big, quick.But there are significant limitations due to the special nature of sludge for Sludge landfill, aqueous
The dewatered sludge of rate 80% is bulky, and transportation cost is high, takes up a large area, and a line city in short supply for land resource is especially
It is severe.Moisture content is high, and rheological characteristic is strong, and the characteristics such as bearing capacity difference make place after landfill be difficult to stablize, therefore can be carried out the dirt of landfill
Mud moisture content cannot generally be greater than 60%；High-moisture percentage necessarily forms a large amount of percolate, and complicated component, pollutant load
Height considerably increases the expense of antiseepage layer material, leachate collection and purification facility, if antiseepage is improper, percolate easily enters ground
Lower water layer, polluted underground water.Burning can effectively kill pathogen and decompose poisonous and hazardous organic matter, while by heavy metal oxidation
At more stable oxide, be it is a kind of can realize minimizing, innoxious and recycling sludge disposal technology to greatest extent, but it is dirty
Moisture evaporation can absorb amount of heat in mud, be unable to maintain that effective spontaneous combustion, need to mix a large amount of auxiliary fuels, and processing cost is high, and
Furnace temperature is not easy to reach 800 DEG C or more, is also easy to produce the extremely toxic substances such as dioxin.
Excessively high moisture content seriously limits the application of traditional sludge disposal technology, therefore realizes that recycling sludge utilizes
Key is the predrying of sludge, its moisture content is reduced to 40~60% or so.After sludge drying, volume and weight will be big
Big reduction, transport difficulty and expense can reduce, and fill that shared land area will reduce, diafiltration filter yield will reduce, and place is steady
It is qualitative to enhance；While bacterium and pathogen are efficiently removed, nutriment is still retained；The calorific value of sludge is significantly
It improves, is able to achieve the self-sufficiency of burning capacity, not only remove the expense of auxiliary fuel, but also the heat by burning also recyclable sludge
Value (analogy lignite).
Currently, the relatively broad sludge drying technique of domestic and international application is mainly heated drying technology, it is real to pass through external heat source
The evaporation of moisture in existing sludge, compared to drying techniques such as traditional gravity-flow ventilation, gravity, with occupied area is small, subtracts
Quantify the advantages that obvious, but there are still invest the problems such as operation energy consumption is high, dust pollution is serious.Sludge organism desiccation is related
Person adheres to the theory of economical and energy saving, a kind of more recent technology of proposition.
Biological dewatered feature is to be not required to external heat source, but under aerobic condition, using the microorganism in sludge from
The heat material that body degradation of organic substances generates, then evaporation water is removed by extraneous regulation, to realize sludge drying mesh
A kind for the treatment of process.
It is biological dewatered to have similar microbial metabolism with aerobic compost, but the purpose of the two is different, so regulation
Condition is different.Aerobic compost is to control condition in the range of exciting the maximum activity of microorganism, makes the organic matter in sludge
It is converted to stable humic-like substance, is rapidly achieved stabilisation and decomposedization, form the organic fertilizer for meeting land use standard, compost
The ventilatory capacity of period is used only for keeping the aerobic environment of heap body.To moisture content, ventilation quantity, conditioner and temperature in composting process
Etc. factors regulation be more consider composting cycle and product quality, rather than in sludge moisture content number.Biological dewatered then side
The necessary condition for maintaining microbial activity is overweighted, cooperation forced ventilation promotes the evaporative removal of moisture, realizes the quick of moisture content
Decline, and the degradation rate of microorganism is reduced as far as possible, retain organic matter gross calorific value to greatest extent, so as to following resource,
Its typical residence time is 7~15d, and product section is stablized.
Biological dewatered treatment process mainly by microorganism aerobic fermentation and two process of forced ventilation joint effect,
Finstein and Scholwin etc. related studies have shown that the drying efficiency and material of organic matter degradation degree and material humidity
And heap body physico-chemical property is closely related.
The humidity of starting material affects the diffusion of the activity of microorganism, the potential energy of water and oxygen.Moisture supplies abundance can
The high activity of microorganism is kept, moisture is higher, is more conducive to the dissolution and diffusion of nutritional ingredient, and the height of more easy excitated microorganism is living
Property.But excessively high moisture, diffusion difficulty of the Yi Zengjia oxygen inside heap body generate local anaerobic environment, influence aerobic micro- life
The rate of release of object energy, and the specific heat capacity of water is very big, in heap body a large amount of moisture heat absorption will lead to heap body cannot quickly just
Often heat up.Meanwhile the material heap body wet density of high-moisture, heap body are easily compacted, porosity and free airspace are smaller.Free airspace
It is too low, O2Diffusion and storage process be obstructed, heap body present anaerobic environment, aerobic microbiological activity is suppressed, leads to detesting for heap body
Aerobe fermentation, along with the reduction in free airspace, heap body permeability is deteriorated, and gas is increased by the pressure drop of heap body, causes energy consumption
Increase.And the feature that the tiny easy agglomeration of, pellet excessively high for dewatered sludge moisture content, heap body permeability are poor, to guarantee biology
The rapid smooth starting of desiccation need to add certain conditioner before fermentation, adjust material initial water part and improve heap body opening gap
Rate improves heap body physico-chemical property.Preferably conditioner should be light, and water absorbing capacity is strong, can play a supporting role, materialization
Matter is stablized, without secondary pollution, is easy to sieve and recycle, and cheap material.
Summary of the invention
For disadvantages mentioned above existing for existing sludge organism desiccation conditioner, the purpose of the present invention is to provide a kind of apertures
Structure-rich, water absorbing capacity are strong, lightweight resistance to compression, and physico-chemical property is stablized, and are easy to sieve and recycle, suitable for sludge organism desiccation
Porous conditioner (diatom base porous ceramics).
Diatom base porous ceramics provided by the present invention is prepared by the method comprising the following steps: by raw material
Diatomite, glass powder, carbon dust are prepared into green body after mixing；Then by the green body be sintered to get.
Wherein, the mass ratio of the diatomite and glass powder is (75-90): (25:10), and wherein optimum proportioning is 85:15,
The quality of the carbon dust accounts for the 30-50% of the diatomite and glass powder quality sum, and wherein optimum proportioning is 40%.
The green body can be able to be 2cm for spherical or elliposoidal, diameter.
The temperature of the sintering is 900 DEG C to 950 DEG C, and the time is 1h to 1.5h.The sintering specifically can be in single hole push plate
It is carried out in kiln.
In order to make the diatom base porous ceramics form porous vitreous layer, the method also includes: to the green body into
Before row sintering, in the step of billet surface wraps mixture；The mixture is by glass powder and carbon dust according to mass ratio
(65-75): the ratio of (35:25) mixes.Before sintering, idiosome is more wet, idiosome is rolled in mixture repeatedly,
Guarantee idiosome surface uniform adhesion mixture.
The application for the diatom base porous ceramics that the above method is prepared into also belongs to protection scope of the present invention.
The application that the present invention is protected is that the diatom base porous ceramics is being prepared suitable for the porous of sludge organism desiccation
Application in conditioner.
The present invention using diatomite as primary raw material, glass powder is cosolvent, carbon dust is pore former, and resulting finished surface is
Porous vitreous layer, inside have netted capillary structure.Its saturated water absorption is up to 65.60%, the porosity 70.24%, volume
Density 1.070g/cm3, compression strength 5.24MPa.The diatom base porous ceramics has ventilative capillary structure abundant
Body, internal stretch of the appearance towards structural body of the ventilative pore self-structure body, and ventilative pore are to absorb and store water
The space divided.In sludge organism drying process, adsorbable large quantity of moisture and improves heap body at the moisture content of effective conditioning of mud
Gap structure；Good with the associativity of sludge, composting process easily forms particle, and system heating rate is very fast；Intensity is high, has higher
Anti-friction ability, breakage rate is almost nil；Service life is high, and chemical stability is good, is easy to sieve, can be recycled.
Specific embodiment
Method of the invention is illustrated below by specific embodiment, but the present invention is not limited thereto, it is all at this
Any modifications, equivalent replacements, and improvements etc. done within the spirit and principle of invention, should be included in protection model of the invention
Within enclosing.
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
" % " in following embodiments is mass percentage.
Embodiment 1, preparation diatom base porous ceramics
Main material diatomite used is purchased from the fine products factory of Zhejiang Province, East Zhejiang province, Shengzhou diatomite, glass powder purchase in the present invention
From the magnificent hundred million mineral products processing factories in Lingshou County, the analysis of its chemical constituent see the table below using x-ray fluorescence energy disperse spectroscopy (unit:
W%):
Grain graininess is greater than the feedstock transportations of 200 mesh first, and into high pressure suspension mill, grinding is to 200 mesh or so, silicon
The mass ratio of diatomaceous earth and glass powder is 85:15, and addition carbon dust quality accounts for the 40% of diatomite and glass powder gross mass.According to above-mentioned
It is sent into bipyramid high efficient mixer and mixes after ratio (formula C) ingredient, into forming in drum-type nodulizer, obtaining diameter is about
The spherical shape or elliposoidal green body of 2cm is placed at ventilation spaciousness and dries, the idiosome after drying is finally put into single hole sintering furnace flitch
High temperature sintering is carried out in basket.24 meters of furnace superintendent of sintering, is divided into 8 meters of 12 meters of heating zone, 4 meters of high-temperature region and cooling zone, plate by totally three sections
Frame is having a size of 300 × 200 × 140mm, in sintering procedure, is first required according to sintering process by the default specific temperature of temperature of each section
Degree, and be sintered with the pusher speed of 0.06m/min, cooling obtains diatom base porous ceramics after sintering.
Specific setup parameter is as shown in the table:
Obtained diatom base porous ceramics shape approximate sphericity, partial size 2cm.With the water suction of static(al) weight method measurement finished product
Rate, the porosity and bulk density, by finished product, in 105 DEG C of baking ovens, drying to constant weight (6h or so), and taking-up is put into drying box, after cooling
Claim its dry weight, then be placed in vacuum desiccator, is vacuumized with vacuum pump using circulatory water and (keep vacuum degree for 0.1Mpa, lh, be put into
In water, the above 6cm of water immersion sphere takes out until being evacuated to the releasing of water surface bubble-free, weighs the weight of sphere in water respectively
Weight when measuring and being full of water.4~6 samples of test every time, take its average value.It is surveyed using CSS-2220 electronic universal tester
Try its compression strength.
The main performance of finished product see the table below:
The porous conditioner of preparation has ventilative capillary structure body abundant.In sludge organism drying process, it can inhale
Attached large quantity of moisture, the moisture content of effective conditioning of mud and the gap structure for improving heap body, composting process good with the associativity of sludge
Particle is easily formed, system heating rate is very fast.Haydite intensity is high, and anti-friction ability with higher, breakage rate is almost nil, makes
With service life height, chemical stability is good, is easy to sieve, can be recycled.
The application example of embodiment 2, diatom base porous ceramics
The dewatered sludge of moisture content 84.1% is mixed with diatom base porous ceramics 7:3 in mass ratio prepared by embodiment 1,
Biological dewatered experiment is carried out in static batch sludge organism desiccation reaction system, reactor volume about 160L, high 1m, internal diameter
0.45m.Air needed for reaction process is supplied by air compressor machine, and the symmetrical position in two sides upper, middle and lower of cylinder is equipped with respectively
Six temperature sensors, length 20mm, for monitoring the variation of temperature in reactor on-line.In drying process, system starting and
Heating is exceedingly fast, and 29h temperature of charge is close to 50 DEG C, when 41h, reaches 58.2 DEG C of maximum temperature, heating rate is more up to 25 DEG C/d
The removal of hole ceramic stack body moisture mainly concentrate on preceding 3.5d, wherein the water-cut variation most fast stage be 30h~66h it
Between, correspond to stage material megathermal period, moisture content is down to 65.42% from 75.27%, the temperature decline stage, water-cut variation gesture
It is micro-, the average moisture removal rate about 359.64kg H of system2O/dt (dewatered sludge).Breakage rate < 1% in use is repeated
It uses, conditioner can be easily separated with sludge, and the product after especially sieving is more suitable for following process.
The application example of embodiment 3, diatom base porous ceramics
The dewatered sludge of moisture content 84.1% is mixed with diatom base porous ceramics 5:3 in mass ratio prepared by embodiment 1,
Biological dewatered experiment is carried out in the biological dewatered reaction system of drum mud, and roller section reactor volume 3000L long, 1m is interior
Diameter 2m, inner wall surface are covered with diameter 3mm, and the aperture of spacing 5cm is used for uniform gas distribution.Space is equal by partition between inside and outside two wall
It is even to be divided into 6 parts, 1 air intake branch of every partial insertion, 1 suction branch and a drainpipe, and be connected with position sensor,
Drainpipe is close to partition, the condensed water for being discharged between two walls.Air inlet when rollers roll is to appropriate location, evacuating valve from
It is dynamic to open.In drying process, system temperature of charge after 39h rises to 61 DEG C of maximum temperature, can maintain 3d or more at 50 DEG C, with tree
Skin is that can maintain 3d or more at 60 DEG C when the system of conditioner can rise to 75 after 24h DEG C.Moisture content is by 77.95% drop after 4d
To 58.02%, drying process can be gone on smoothly.Breakage rate < 1%, reusable in use, and conditioner and sludge are easy to divide
From the product after especially sieving is more suitable for following process.
Embodiment 4, (embodiment that mixture package idiosome please be supplemented with)
This experiment main material diatomite used is available from the diatomite adsorbant of Tianjin recovery fine chemistry industry research institute,
There are kaolin, diopside, wollastonite, glass powder to carry out chemistry main material and other additives using Xray fluorescence spectrometer
Composition analysis.
Following table is that each starting material element characterized in the form of element oxide mass fraction forms.
| Raw material | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | K2O | Na2O |
| Diatomite | 91.13 | 2.19 | 2.54 | 0.48 | 0.26 | 0.62 | 1.99 |
| Kaolin | 46.61 | 39.07 | 0.50 | 0.11 | 0.07 | 0.49 | 0.27 |
| Diopside | 56.14 | 1.47 | 0.81 | 23.93 | 16.59 | 0.63 | 0.16 |
| Wollastonite | 32.56 | 0.11 | 0.27 | 65.22 | 1.59 | 0.07 | * |
| Glass powder | 53.90 | 3.03 | 0.43 | 3.06 | 1.86 | 7.59 | 5.81 |
Selected various raw materials are ground with ball mill respectively and (crossed the screening of 200 mesh sieve, lower part of screen fractionation use), by silicon
Diatomaceous earth: glass powder=85:15, carbon dust account for 30% ingredient of diatomite Yu glass powder mixture, and (the left side 15min is mixed in mortar
It is right) afterwards addition water (playing binder) stir into the pug with certain plasticity, be twisted into the bead of diameter about 2cm by hand,
After sphere molding, arranged in the optimization of one layer of glass powder of surface adhesion and the mixture (glass powder: carbon dust=70:30) of powdered carbon
It applies, the glass powder sintered molten on surface after sphere is dry, is put into high temperature resistance furnace in being wrapped in sphere at glass phase,
The calcining system of selected green body are as follows: heating rate 5 DEG C/min, 600 DEG C of constant temperature 20min, between 600 DEG C~950 DEG C, heating speed
Rate 5 DEG C/min, 950 DEG C of constant temperature 1h.Natural cooling obtains finished product.Experiment sludge used is derived from the de- of Qinghe sewage treatment plant
Sewage sludge, moisture content are about 86%, the content of organic matter 56.7%, and pine bark is purchased from upper knoll mountain Environmental Protection Technology Co., Ltd, just
Beginning moisture content 12.5%, granularity are 10~20mm.The performance that comparison finished product and bark absorb water in sludge, as a result, it has been found that, due to
The spherome surface developed herein is handled through vitreous, therefore its initial rate of water absorption is slower, but rate of water absorption increases after 1h, and mixed
Saturated water absorption 97% can be basically reached after closing 9h, water absorbing capacity is compared with bark height.
Claims (8)
1. a kind of method for preparing diatom base porous ceramics includes the following steps: to mix raw material diatomite, glass powder and carbon dust
Green body is prepared into after uniformly；Then by the green body be sintered to get.
2. according to the method described in claim 1, it is characterized by: the mass ratio of the diatomite and glass powder is (75-90):
(25:10), the quality of the carbon dust account for the 30-50% of the diatomite and glass powder quality sum.
3. method according to claim 1 or 2, it is characterised in that: the temperature of the sintering is 900 DEG C -950 DEG C, the time
For 1h-1.5h.
4. method according to any one of claim 1-3, it is characterised in that: the green body is spherical or elliposoidal base
Body.
5. method according to any of claims 1-4, it is characterised in that: the method also includes: to the base
Before body is sintered, in the step of billet surface wraps mixture；The mixture is by glass powder and carbon dust according to quality
Than (65-75): the ratio of (35:25) mixes.
6. method according to any one of claims 1-5, it is characterised in that: the diatomite, glass powder, carbon dust grain
Diameter is respectively less than 0.075mm.
7. the diatom base porous ceramics that any one of claim 1-6 the method is prepared.
8. diatom base porous ceramics as claimed in claim 7 is preparing answering the porous conditioner suitable for sludge organism desiccation
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315649.7A CN109437962B (en) | 2018-11-06 | 2018-11-06 | Diatom-based porous ceramic for sludge biological drying conditioner and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315649.7A CN109437962B (en) | 2018-11-06 | 2018-11-06 | Diatom-based porous ceramic for sludge biological drying conditioner and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109437962A true CN109437962A (en) | 2019-03-08 |
| CN109437962B CN109437962B (en) | 2020-09-01 |
Family
ID=65550509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811315649.7A Expired - Fee Related CN109437962B (en) | 2018-11-06 | 2018-11-06 | Diatom-based porous ceramic for sludge biological drying conditioner and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109437962B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573382A (en) * | 2022-03-03 | 2022-06-03 | 贵州大学 | Method for separating humus components of sludge and comprehensively utilizing products |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090137382A1 (en) * | 2007-11-27 | 2009-05-28 | Gregory Albert Merkel | Fine porosity low-microcracked ceramic honeycombs and methods thereof |
| CN102826733A (en) * | 2012-07-19 | 2012-12-19 | 南京林业大学 | Method for efficiently dewatering of sludge |
| CN103028426A (en) * | 2012-12-21 | 2013-04-10 | 湖南清和污泥资源利用有限公司 | Oxidation-oriented catalyst used for sludge treatment |
| CN103090396A (en) * | 2012-12-06 | 2013-05-08 | 上海金自天正信息技术有限公司 | Two-stage drying and incineration method for sludge |
| CN104445863A (en) * | 2014-12-31 | 2015-03-25 | 梁毅 | Method for achieving deep sludge dehydration and energy utilization on plate-and-frame filter press |
| CN104844264A (en) * | 2015-04-13 | 2015-08-19 | 山东理工大学 | Porous ceramic-loaded catalyst used for biomass catalytic liquefaction, and preparation method thereof |
| CN105218147A (en) * | 2015-07-06 | 2016-01-06 | 王聿超 | A kind of negative ion humidification porous ceramics and preparation method thereof |
| CN106630545A (en) * | 2017-02-06 | 2017-05-10 | 天津市环境保护技术开发中心设计所 | Drying treatment method of oil-containing sludge |
-
2018
- 2018-11-06 CN CN201811315649.7A patent/CN109437962B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090137382A1 (en) * | 2007-11-27 | 2009-05-28 | Gregory Albert Merkel | Fine porosity low-microcracked ceramic honeycombs and methods thereof |
| CN102826733A (en) * | 2012-07-19 | 2012-12-19 | 南京林业大学 | Method for efficiently dewatering of sludge |
| CN103090396A (en) * | 2012-12-06 | 2013-05-08 | 上海金自天正信息技术有限公司 | Two-stage drying and incineration method for sludge |
| CN103028426A (en) * | 2012-12-21 | 2013-04-10 | 湖南清和污泥资源利用有限公司 | Oxidation-oriented catalyst used for sludge treatment |
| CN104445863A (en) * | 2014-12-31 | 2015-03-25 | 梁毅 | Method for achieving deep sludge dehydration and energy utilization on plate-and-frame filter press |
| CN104844264A (en) * | 2015-04-13 | 2015-08-19 | 山东理工大学 | Porous ceramic-loaded catalyst used for biomass catalytic liquefaction, and preparation method thereof |
| CN105218147A (en) * | 2015-07-06 | 2016-01-06 | 王聿超 | A kind of negative ion humidification porous ceramics and preparation method thereof |
| CN106630545A (en) * | 2017-02-06 | 2017-05-10 | 天津市环境保护技术开发中心设计所 | Drying treatment method of oil-containing sludge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573382A (en) * | 2022-03-03 | 2022-06-03 | 贵州大学 | Method for separating humus components of sludge and comprehensively utilizing products |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109437962B (en) | 2020-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104258812B (en) | A kind of metallic element improvement charcoal base nitrate anion adsorbent and preparation method thereof | |
| CN103864275B (en) | Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof | |
| CN104084128B (en) | Changing food waste waste residue modification active sludge carbon is utilized for what waste water processed | |
| CN105879834A (en) | Preparation method of adsorbent for removing phosphorus and heavy metal anions in water as well as application method | |
| CN105693277A (en) | Iron-tailing porous material as microbial ceramsite filtering material, preparation method of iron-tailing porous material and application of iron-tailing porous material | |
| CN105837005A (en) | Municipal excess sludge biologic drying organic conditioning agent and preparation method thereof | |
| CN108484115A (en) | A kind of porous material prepared using solid waste | |
| CN105195092A (en) | Sludge-based charcoal and preparation method thereof | |
| CN106345411A (en) | Rare metal-based sludge activated carbon and application thereof in removal of sulfur, ammonia and phosphorus | |
| CN106512929A (en) | Embedded zero-valent iron porous adsorption reaction material | |
| CN104258808A (en) | Method and system for increasing specific surface area of sludge biochar | |
| CN111039658A (en) | Phosphorus removal ceramsite and preparation method thereof | |
| CN104556031A (en) | Mud-based spherical active carbon as well as preparation method and application thereof | |
| CN110144225A (en) | A kind of composite soil renovation agent and its preparation method and application | |
| CN109437962A (en) | A kind of diatom base porous ceramics and preparation method thereof for sludge organism desiccation conditioner | |
| CN114669268A (en) | Preparation method and application of biochar-steel slag composite adsorption material | |
| CN1644217A (en) | Particle concave-convex rod deodorant agent for refrigerator and production thereof | |
| KR100724126B1 (en) | Cement concrete, asphalt concrete, and the block manufacture method with the strength wished using the aggregate manufactured by the aggregate manufacture equipment, the manufacture method, and such an aggregate manufacture method of having capture, vegetation, and an antibacterial function using Korean medicine and food leftovers, industry, and construction waste, and this aggregate | |
| CN107434251A (en) | A kind of preparation method of active sludge carbon | |
| CN102600801A (en) | Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater | |
| CN108863449A (en) | A kind of kitchen residue aerobic composting process | |
| CN109289775A (en) | A kind of Magnetic Activated charcoal adsorbent material and preparation method | |
| CN111454100A (en) | Preparation method of slow-release phosphate fertilizer | |
| CN107282012A (en) | Can dispose waste liquid middle heavy metal perlite compress Nutrition Soil production method | |
| CN106635238B (en) | Method for preparing light particles from municipal sludge and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |