CN105217925B - A kind of sludge in-situ curing and stabilized curing agent and its preparation method and application - Google Patents
A kind of sludge in-situ curing and stabilized curing agent and its preparation method and application Download PDFInfo
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- CN105217925B CN105217925B CN201510657325.1A CN201510657325A CN105217925B CN 105217925 B CN105217925 B CN 105217925B CN 201510657325 A CN201510657325 A CN 201510657325A CN 105217925 B CN105217925 B CN 105217925B
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- 239000010802 sludge Substances 0.000 title claims abstract description 127
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 71
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 30
- 159000000013 aluminium salts Chemical class 0.000 claims abstract description 29
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 26
- 239000002734 clay mineral Substances 0.000 claims abstract description 21
- 239000000292 calcium oxide Substances 0.000 claims abstract description 17
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 16
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 9
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 9
- 239000000440 bentonite Substances 0.000 claims abstract description 9
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 9
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 9
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010457 zeolite Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229920000592 inorganic polymer Polymers 0.000 claims abstract description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 24
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 20
- 239000004115 Sodium Silicate Substances 0.000 claims description 16
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 16
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 3
- 229910000405 sodium aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 12
- 159000000007 calcium salts Chemical class 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 10
- 159000000003 magnesium salts Chemical class 0.000 abstract description 10
- 238000007711 solidification Methods 0.000 abstract description 7
- 230000008023 solidification Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 19
- 238000002386 leaching Methods 0.000 description 13
- 229910001385 heavy metal Inorganic materials 0.000 description 12
- 239000005416 organic matter Substances 0.000 description 11
- 230000006641 stabilisation Effects 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000034 Plastomer Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a kind of sludge in-situ curing and stabilized curing agent and its preparation method and application, which includes the component of following percentage by weight：Cement 40 ~ 60%, quick lime 10 ~ 20%, clay mineral 10 ~ 25%, inorganic salts 5 ~ 20%, admixture 3~8%；Wherein, the clay mineral is the mixture for including bentonite, kaolin and zeolite, and the inorganic salts are aluminium salt, sodium salt, calcium salt, the one of which or its two or more any combination of magnesium salts, and the admixture is a kind of inorganic polymer.The curing agent of the present invention is suitable for sludge in-situ and cures and stabilize construction technology, can simplify treatment process program and difficulty, and pollutant in sludge is innoxious, improves sludge early strength, improves construction efficiency, reduces processing cost, and solidification effect is good.
Description
Technical field
The present invention relates to sludge treatment field, and in particular to a kind of sludge in-situ cures and stabilized curing agent and its system
Preparation Method and application.
Background technology
Sludge sanitary landfills is the mode often taken in current domestic many large-scale wastewater treatment plants, by postdigestive dirt
Mud content of organics is reduced, and performance is stablized, and cumulative volume is reduced, and as landfill stabilization is a kind of both economical processing side after dehydration
Formula.The current municipal sludge yield in China will break through 35,000,000 tons/year, and wherein 60 ~ 65% sludge use sanitary landfills side
Formula is handled.
Sludge treatment main method in China's is disposed for Sludge landfill at present, is simply filled out wherein most of sludge landfills use
Mode is buried, does not carry out effective seepage control measure, in itself and without harmless treatment, fill out in the sludge of hole has sludge containing various
Malicious nuisance, erosion through rainwater and leakage contaminating action Soil Surrounding and groundwater environment, this for surrounding enviroment form compared with
Big security risk.In addition landfill yard fills out in hole that Sludge landfill amount is big, depth is deeper, and sludge is poor in stream plastomer, stability, if
Generation is man-machine to be absorbed in or dam-break accident, will be constituted a threat to the security of the lives and property of periphery production activity resident.Therefore some is worked as
When municipal sludge landfill yard Sludge landfill amount reaches saturation, there is an urgent need for adopting an effective measure to be disposed landfill yard closing, reduce
Its security risk and threat to periphery ecological environment and resident.
Sludge in-situ solidification and stabilization method of disposal has and sludge sump is disturbed as a kind of new sludge disposal method
It is dynamic less, secondary pollution it is small, equipment is less, construction site is small, treatment process is simple, engineering is convenient to carry out, during solidification sludge
Leachate site is not produced, the advantages that construction efficiency is higher, chooses that the sludge in-situ effectively used cures and stabilized curing agent is
The key link of sludge in-situ curing/stabilizing disposing technique, for ensureing that construction safety and construction quality are most important.
The content of the invention
In order to solve the above-mentioned technical problem, in-situ solidifying and stabilization processes are carried out to the municipal sludge of sludge landfill,
It must consider that sludge in-situ cures construction technology particularity, while reducing moisture percentage in sewage sludge, keep sludge curing body pH balances,
Sludge Leaching is effectively reduced, prevents that harmful components pollute Soil Surrounding and body of groundwater in sludge after curing, together
When must also improve solidification sludge early strength, so that sludge can be used as construction platform load-bearing heavy mechanical equipment to make up after curing
Industry, ensures construction speed and safety, and the present invention provides a kind of sludge in-situ and cures and stabilized curing agent and its preparation side
Method and application.
The present invention provides a kind of sludge in-situ curing and stabilized curing agent, includes the component of following percentage by weight：
Cement 40 ~ 60%,
Quick lime 10 ~ 20%,
Clay mineral 10 ~ 30%,
Inorganic salts 5 ~ 20%,
Admixture 3~5%.
The curing agent is solid dry powder-shaped, and each constituent is solid dry powder above, granular size without
Specific particular particle size requirement, the ratio of each constituent are calculated in the form of percent purity, and each component is curing
Shared ratio is to select the material of 100% purity to be calculated in agent.
Wherein described clay mineral includes bentonite, kaolin and zeolite, be uniformly mixed, wherein bentonite, kaolin and
The percentage by weight of zeolite is：Bentonite 40 ~ 70%, kaolin 20 ~ 40%, zeolite 10 ~ 20%.Preferably, in the clay mineral
The mass ratio of bentonite, kaolin and zeolite is 50.8: 33.7: 15.5.The admixture gathers for inorganic polymer
Compound.
It is further preferred that wherein described inorganic salts are aluminium salt, calcium salt, sodium salt, the one of which of magnesium salts or its two kinds are appointed
Meaning combination.When the inorganic salts select aluminium salt, calcium salt, sodium salt, in magnesium salts two groups be combined when, the ratio of specific two kinds of components
Relation is as follows：When selecting aluminium salt and calcium salt, the mass ratio of aluminium salt and calcium salt is 2:1~1:3, when selecting aluminium salt and sodium salt, aluminium
The mass ratio of salt and sodium salt is 1:1~1:4, when selecting aluminium salt and magnesium salts, the mass ratio of aluminium salt and magnesium salts is 1:3~1:4 is elected
When selecting calcium salt and sodium salt, the mass ratio of calcium salt and sodium salt is 1:1~1:3, when selecting calcium salt and magnesium salts, the matter of calcium salt and magnesium salts
Amount is than being 1:2~1:4, when selecting sodium salt and magnesium salts, the mass ratio of sodium salt and magnesium salts is 2:1~1:3.
Preferably, the inorganic salts are aluminium salt and the mixture of sodium salt.
Preferably, the aluminium salt is one of aluminium chloride or aluminum sulfate or its combination, the sodium salt for sodium metasilicate or
One of sodium sulphate or its combination.
Preferably, the mass ratio of the aluminium salt and sodium salt is 1:2~1:5.
It is further preferred that above-mentioned sludge curing and stabilized curing agent, the component of following percentage by weight is included：
Portland cement 51.6%,
13 .3% of quick lime,
Bentonite 9.2%,
Kaolin 6.1%,
Zeolite 2.8%,
Aluminium salt 3.2%,
Sodium salt 9.6%,
Admixture 4.2%.
Wherein, above-mentioned aluminium salt is preferably aluminium chloride, and sodium salt is preferably sodium metasilicate.
The present invention provides the preparation method of above-mentioned sludge curing and stabilized curing agent：Each component palpus of curing agent
It is solid dry powder-shaped, meets in-situ solidifying technique insecticide pressure conveying tank body and pipeline for drug character requirement, the nothing
Machine salt is block if the excessive crystal of moisture content, must dehydration be ground to it is powdered can be suitable for the present invention, using preceding according to described
Each component is measured, no component adds sequencing particular/special requirement, is uniformly mixed, curing agent then will be made in hermetically drying condition
Lower preservation.
The present invention also provides the application of above-mentioned sludge curing and stabilized curing agent：The curing agent is passed through into specialty
Sludge curing equipment in situ（As ALLU cures plate base stabilization system）It is added in sludge, using in-situ solidifying Beater operator
Skill, is successively stirred by 2 dosings, and 1 not dosing self-test stirring, sludge and medicament are stirred evenly, after curing in 1 ~ 2d
Sludge region surface spreads rain-proof film after curing, and then sludge to be solidified stands maintenance 7d.The addition quality of the curing agent with
The mass ratio of sludge is 0.15 ~ 0.30:1.
Preferably, the mass ratio of the addition quality of the curing agent and sludge is 0.15 ~ 0.30:1.
Present invention has the advantage that：
（1）The raw material of curing agent provided by the invention are the raw materials of industry, can realize batch of curing/stabilizing material
Amount production and large-scale application.
（2）The raw material of curing agent provided by the invention are pulvis character, can be suitable for in-situ solidifying mixing plant
Medicament pumping system.
（3）The curing agent material of the present invention can put forward sludge early strength rapidly, can shorten solidification/stabilization sludge
Curing age, in the short period of time sludge just can be used as construction platform load-bearing heavy mechanical equipment, to uncured sludge
Region carries out in-situ solidifying operation.
（4）The curing agent of the present invention, which can drop, effectively suppresses harmful components activity in sludge, and Heavy Metals in Sludge etc. is had
Harmful component passivation and innoxious, harmful components leaching in reduction sludge, reduce sludge for Soil Surrounding and body of groundwater pollution.
（5）The curing agent of present invention pernicious gas such as ammonia in it can suppress sludge during sludge in-situ cures whipping process
Release, reduces it to operating personnel's body harm, cures medicament and do not contain harmful components in itself, will not cause secondary pollution.
Embodiment
With reference to specific embodiment, the invention will be further described, so that those skilled in the art can be more preferable
Understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The sludge curing and stabilized curing agent of the present invention, includes the component of following percentage by weight：
Cement 40 ~ 60%,
Quick lime 10 ~ 20%,
Clay mineral 10 ~ 30%,
Inorganic salts 5 ~ 20%,
Admixture 3~5%.
Wherein described clay mineral is the mixture for including bentonite, kaolin and zeolite, inorganic salts are aluminium salt, calcium salt,
The one of which or its two or more any combination of sodium salt, magnesium salts.
Curing agent action principle of the present invention is as follows：This curing agent is consolidated using cement-based material as structural agent as structure sludge
The skeleton of agent structure；Add quick lime and clay mineral, can moisture reacts rapidly and in sludge, contain in reduction sludge
Water rate, while the hydrated product of its reaction generation can increase sludge curing body intensity, while filler increase can be used as dirty
Mud firming body saturation degree；Several inorganic salts that the present invention is screened have in itself promotees solidifying early strength function, while each inorganic salts ingredients
Between can produce synergistic effect, mutually accelerate to promote reaction, it is common to improve solidification sludge early strength, formed after inorganic salts aquation
Crystal water retention property it is good, can quickly reduce moisture percentage in sewage sludge；The admixture is a kind of inorganic polymer of optimization
Polymer, its advantage function reduce moisture percentage in sewage sludge, while energy in a short time quickly can lock hydrone in sludge
Enough promote the other compositions hydration reactions such as cement, clay mineral and inorganic salts, improve the hardening strengths such as aquation body, have obvious
Early strength function.
According to the requirement for bearing capacity of different application project design and Practical Project, specifically used ratio is determined, it is general next
The curing agent usage amount for saying the primary sludge being up to for moisture content between 85.1 ~ 95.3% is 15~30%, sludge volume per ton
For 150~300kg.Then volume is higher for water content height, and then addition content is higher for requirement for bearing capacity height, and high organic content is then in mud
Addition content is higher, and hardening time requires short volume higher.Using the curing agent of the present invention in practical engineering application, for average
The landfill yard sludge that moisture content is 89%, the average content of organic matter is 41% adds this medicament and carries out in-situ solidifying and stabilisation, 3d
Compression strength can reach 40 ~ 80kPa afterwards, and water content, which can be rapidly decreased to the unconfined compressive strength after less than 60%, 7d, to be reached
60 ~ 140kPa, and there is superior water proofing property, water stability and the hydraulicity.After curing sludge pH can be maintained at 7 ~
Between 10, while the pollutant such as heavy metal contained in sludge, pathogen is consolidated, and greatly reducing nuisance after curing, it is oozed
Extracting rate, after testing, there is good environmental-protecting performance.The immersion of long-term rainwater is resistant to after tested without leaching pollutant,
And can 30 tonnes of heavy mechanical equipments of load-bearing get on operation.
Embodiment 1
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 51.6%,
Quick lime 13.3%,
Clay mineral 18.1%,
Inorganic salts 12.9%,
Admixture 4.1%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium metasilicate, and the mass ratio of aluminium chloride and sodium metasilicate is 1:3.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 85.1%, the content of organic matter is 38.9%
Enter 150 kg of curing agent of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 84.1kPa, moisture content 49.8% after 47.1kPa, 7d, meets Sludge landfill disposal technology index
It is required that.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification standard.
Embodiment 2
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 51.6%,
Quick lime 13.3%,
Clay mineral 18.1%,
Inorganic salts 12.9%,
Admixture 4.1%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium metasilicate, and the mass ratio of aluminium chloride and sodium metasilicate is 1:3.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 95.3%, the content of organic matter is 41.6%
Enter 300 kg of curing agent of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 65.1kPa, moisture content 53.8% after 41.1kPa, 7d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
（2）Embodiment 3
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 40.0%,
Quick lime 10.0%,
Clay mineral 30.0%,
Inorganic salts 15.0%,
Admixture 5.0%；
Wherein, aluminium salt is aluminum sulfate, and sodium salt is sodium metasilicate, and the mass ratio of aluminum sulfate and sodium metasilicate is 1:5.
Above-mentioned curing agent application：In the landfill yard that average moisture content per ton is 89.3%, the average content of organic matter is 41.3%
280 kg of curing agent of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength after 3d are added in sludge
78.6kPa can be reached, unconfined compressive strength reaches 137.9kPa, moisture content 42.1% after 7d, meets that Sludge landfill is disposed
Technical requirement, also meets that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching
Toxicity judging standard.
Embodiment 4
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 40.0%,
Quick lime 20.0%,
Clay mineral 20.0%,
Inorganic salts 17.0%,
Admixture 3.0%；
Wherein, aluminium salt is aluminum sulfate, and sodium salt is sodium sulphate, and the mass ratio of aluminum sulfate and sodium sulphate is 1:2.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 87.1%, the content of organic matter is 38.5%
Enter the curing agent 240kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 64.7kPa, moisture content 55.2% after 42.9kPa, 7d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 5
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 60.0%,
Quick lime 20.0%,
Clay mineral 10.0%,
Inorganic salts 5.0%,
Admixture 5.0%；
Wherein, aluminium salt is aluminum sulfate, and sodium salt is sodium metasilicate, and the mass ratio of aluminum sulfate and sodium metasilicate is 1:2.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 86.5%, the content of organic matter is 40.6%
Enter the curing agent 190kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 82.7kPa, moisture content 46.5% after 52.5kPa, 14d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 6
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 50%,
Quick lime 16.0%,
Clay mineral 10.0%,
Inorganic salts 20.0%,
Admixture 4.0%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium sulphate, and the mass ratio of aluminum sulfate and sodium sulphate is 1:2.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 92.3%, the content of organic matter is 42.5%
Enter the curing agent 260kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 72.4kPa, moisture content 52.1% after 46.3kPa, 14d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 7
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 55.0%,
Quick lime 15.0%,
Clay mineral 22.0%,
Inorganic salts 5.0%,
Admixture 3%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium sulphate, and the mass ratio of aluminum sulfate and sodium sulphate is 1:5.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 88.5%, the content of organic matter is 38.3%
Enter the curing agent 220kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 79.9kPa, moisture content 47.5% after 58.7kPa, 14d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 8
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 55.0%,
Quick lime 15.0%,
Clay mineral 20.0%,
Inorganic salts 5.0%,
Admixture 5.0%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium metasilicate, and the mass ratio of aluminum sulfate and sodium metasilicate is 1:5.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 90.8%, the content of organic matter is 43.3%
Enter the curing agent 240kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 75.1kPa, moisture content 51.6% after 46.8kPa, 14d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 9
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 50.0%,
Quick lime 15.0%,
Clay mineral 19.0%,
Inorganic salts 12.0%,
Admixture 4.0%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium metasilicate, and the mass ratio of aluminum sulfate and sodium metasilicate is 1:2.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 93.5%, the content of organic matter is 42.7%
Enter the curing agent 260kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 61.8kPa, moisture content 56.3% after 42.6kPa, 7d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
Embodiment 10
The present embodiment is to the sludge curing used in the sludge landfill sludge sump in-situ solidifying of Zhuhai and stabilized curing
Agent is mixed according to following formulas（Percentage by weight）：
Cement 50.0%,
Quick lime 15.0%,
Clay mineral 19.0%,
Inorganic salts 12.0%,
Admixture 4.0%；
Wherein, aluminium salt is aluminium chloride, and sodium salt is sodium sulphate, and the mass ratio of aluminum sulfate and sodium sulphate is 1:5.
Above-mentioned curing agent application：Add in the landfill yard sludge that moisture content per ton is 91.5%, the content of organic matter is 42.1%
Enter the curing agent 260kg of said ratio, then using in-situ solidifying stirring technique, unconfined compressive strength can reach after 3d
Unconfined compressive strength reaches 71.8kPa, moisture content 53.4% after 46.3kPa, 7d, meets Sludge landfill disposal technology index
It is required that also meet that building is banketed intensity requirement.Sampled detection, the Steep cencentration detection of heavy metal meet leaching characteristic identification
Standard.
It can be seen that from above example, curing agent of the invention, which cures sludge in-situ and stabilizes, has good processing
Effect, from the point of view of the solidification effect and reagent cost after integrated treatment, curing agent and its proportioning selected by embodiment 1 and embodiment 2
It is the optimal selection in actual production.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is subject to claims.
Claims (5)
1. a kind of sludge in-situ cures and stabilized curing agent, it is characterised in that is made of the component of following percentage by weight：
Cement 40 ~ 60%, quick lime 10 ~ 20%, clay mineral 10 ~ 25%, inorganic salts 5 ~ 20%, admixture 3~8%；
Wherein, the inorganic salts are aluminium salt and the mixture of sodium salt；The mass ratio of the aluminium salt and sodium salt is 1:2~1:5；It is described
Clay mineral is the mixture for including bentonite, kaolin and zeolite；The admixture gathers for a kind of inorganic polymer
Compound；The aluminium salt is one of aluminum sulfate or aluminium chloride or its combination, and the sodium salt is its of sodium sulphate or sodium metasilicate
One of or its combination；
It is made by following steps：According to each constituent in described measurement curing agent, it is uniformly mixed.
2. sludge in-situ according to claim 1 cures and stabilized curing agent, it is characterised in that the curing agent by
The component of following percentage by weight is formed：
Portland cement 51.6%,
13 .3% of quick lime,
Bentonite 9.2%,
Kaolin 6.1%,
Zeolite 2.8%,
Aluminium salt 3.2%,
Sodium salt 9.7%,
Admixture 4.1%.
3. sludge in-situ according to claim 2 cures and stabilized curing agent, it is characterised in that the aluminium salt is chlorine
Change aluminium, the sodium salt is sodium metasilicate.
4. the sludge in-situ described in a kind of claim 1 cures and the application of stabilized curing agent, it is characterised in that by described in
Curing agent cures mixing plant by sludge in-situ and is added in sludge, stirs evenly, and conserves.
5. sludge in-situ according to claim 4 cures and the application of stabilized curing agent, it is characterised in that described solid
The addition quality of agent and the mass ratio of sludge are 0.15 ~ 0.30:1.
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| CN109384360B (en) * | 2018-09-26 | 2022-03-22 | 北京市政建设集团有限责任公司 | Bentonite-water glass material and use method thereof in sludge solidification |
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| CN111018308B (en) * | 2019-12-05 | 2021-01-12 | 中交（天津）生态环保设计研究院有限公司 | Filter-aid bottom mud conditioner for plate-frame filter-pressing dehydration of ecological dredging bottom mud of rivers and lakes |
| CN111018283B (en) * | 2019-12-13 | 2020-12-01 | 中交（天津）生态环保设计研究院有限公司 | Plate-frame filter-pressing dehydration method for river and lake bottom mud |
| CN113186895A (en) * | 2021-03-19 | 2021-07-30 | 北京高能时代环境技术股份有限公司 | In-situ multidimensional curing construction method for large-depth sludge pond |
| CN117602859B (en) * | 2023-10-10 | 2024-04-23 | 江苏集萃功能材料研究所有限公司 | Sludge building material treatment system and treatment method |
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