CN105152585A - Preparation method of fly ash-waste glass powder inorganic polymer sludge curing material - Google Patents
Preparation method of fly ash-waste glass powder inorganic polymer sludge curing material Download PDFInfo
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- CN105152585A CN105152585A CN201510540101.2A CN201510540101A CN105152585A CN 105152585 A CN105152585 A CN 105152585A CN 201510540101 A CN201510540101 A CN 201510540101A CN 105152585 A CN105152585 A CN 105152585A
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- inorganic polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a preparation method of a fly ash-waste glass powder inorganic polymer sludge solidified material. First, fly ash is mixed with pre-treated waste glass powder. Then, a sodium hydroxide and sodium metabisulfite composite excitant solution is added. The fly ash-waste glass powder inorganic polymer is prepared to solidify the sludge. The inorganic polymer is used for curing the sludge, so that the defect that a large amount of cement is needed in the preparation process of the traditional fly ash-cement inorganic polymer sludge curing material is overcome, and CO in the cement production process is reduced2Iso greenhouse gas, work and chemicalThe environmental impact of industrial dust emissions. On the other hand, the fly ash and the waste glass powder solid waste are used for preparing the sludge solidifying material, the fly ash and the waste glass powder which are industrial wastes are fully recycled, a large amount of fly ash and waste glass are consumed, and the problems that a large amount of land is occupied and the surrounding environment is seriously polluted when the solid waste is treated by the traditional landfill method are solved.
Description
Technical field
The invention belongs to solid waste recycling and solidification contaminant material preparation field.Be specifically related to the preparation method of a kind of flyash-scrap glass powder inorganic polymer sludge solidification material.
Background technology
Along with China harbour, navigation channel, the developing rapidly of coastal waters and oceanographic engineering construction, the mud quantity that annual all kinds of engineering cleans out constantly increases, and 2010 are only the mud total amounts that China Delta of Pearl River produces just reaches 8,000 ten thousand m
3.Containing heavy metal element poisonous in a large number in mud, directly carry out if do not take measures toppling over process meeting contaminated soil and water body, and then serious harm people's is healthy.Traditional mode of toppling over process mud has significant limitation and processing cost is higher, cannot meet actual needs.Find more effective, more cost effective method place to go and put the hot issue that the sludge waste day by day increased has become countries in the world common concern.
The states such as last century, the nineties started, Japan bring into use flyash-cement inorganic polymer to be cured process to mud.This kind of sullage solidifying method mainly mixes the inorganic solidified materials such as cement, flyash, lime in mud, after stirring, mixing and maintenance, a series of hydrolysis occurs for solidify material and mud and hydration reaction makes originally to become without the mud of intensity the induration possessing certain mechanical property.Solidify material adds in mud, superscribes one deck irreversible gum material sclerosis shell, make sludge granules possess certain water stability and strength stability on sludge granules surface.The hydrated product simultaneously with gelating property defines reticulated structure between sludge granules, namely constitutes the skeleton of mud, and the hydrated product of crystal class fills cancellated hole, causes mud inside to become fine and close.Effectively reduce heavy metal in sludge activity owing to being wrapped in cancellated formation between setting and harden shell in sludge granules and sludge granules, thus decrease the possibility that heavy metal oozes out from induration.Using flyash-cement inorganic polymer to be cured mud is a kind of very effective process sludge process.But, also there are some problems in the flyash-cement inorganic polymer curing sludge of current use, cement need be used in a large number as prepared this kind of inorganic polymer, the ratio that the trade waste such as flyash, ground slag replaces cement is lower, flyash-cement inorganic polymer curing sludge forms concretion body strength slower development, and induration drying shrinkage is large, easy to crack.
Summary of the invention
The object of the invention is to use cement, concretion body strength slower development and the difficult problem such as drying shrinkage is large, easy to crack in a large number for traditional flyash-cement inorganic polymer sludge solidification material.Provide a kind of preparation method not using cement completely, only use waste, curing speed are fast, induration volume stability is good flyash-scrap glass powder inorganic polymer sludge solidification material.
Realizing technical scheme of the present invention is:
A preparation method for flyash-scrap glass powder inorganic polymer sludge solidification material, comprises the following steps:
(1) scrap glass sorted, clean, dry, after pulverization process, sieve and remove impurity in scrap glass and particle in irregular shape; Then scrap glass particle is put into ball mill ball milling after 30-60 minute levigate scrap glass powder stand-by;
(2) sodium hydroxide and Sodium Pyrosulfite are dissolved in mixing water, control stirring velocity and pH value of water solution, make it form uniform solution;
(3) gelling material, discarded polypropylene carpet fiber are put into the container that agitator is housed and mixed 1-2 minute with 30 revs/min of stirring velocitys, described gelling material is flyash and levigate scrap glass powder.Then the mixing water solution containing sodium hydroxide and Sodium Pyrosulfite is joined in container, continue to stir 1-2 hour under 30 revs/min of stirring velocitys.For avoiding inorganic polymer in container bottom lamination, spades need be used to carry out hand mixing 1-2 time to inorganic polymer slurry.Finally, accelerate mix under the stirring velocity of 60 revs/min 0.5 hour, remove bubble in inorganic polymer slurry, prepare flyash-scrap glass powder inorganic polymer solidify material.
Further, in described step (2), sodium hydroxide concentration is 8% of mixing water weight, and Sodium Pyrosulfite consumption is 4.5% of mixing water weight.
Further, control speed of mixing in described step (2) to control more than 12 at 30 revs/min and pH value of water solution.
Further, in described step (3), discarded polypropylene carpet fiber is 0.5% of gel material content.
Flyash prepared by the present invention-scrap glass powder inorganic polymer sludge solidification material has the following advantages:
(1) compared with traditional flyash-cement inorganic polymer sludge solidification material, although Novel coal ash-scrap glass powder inorganic polymer is due to sodium hydroxide, Sodium Pyrosulfite, the adding of discarded polypropylene carpet fiber, often producing one ton of this kind of solidify material need increase cost of raw and processed materials 10 yuan.But in flyash-scrap glass powder inorganic polymer sludge solidification material, flyash and scrap glass powder replace cement completely, the saving of often producing one ton of this kind of solidify material only cement material expense can reach 25 yuan.COMPREHENSIVE CALCULATING, produces one ton of flyash-scrap glass powder inorganic polymer sludge solidification material and can to save material expense 15 yuan.To produce the 10000 tons of calculating of this kind of new curing material every year, can save material cost 150,000 yuan.
(2) prepare flyash-scrap glass powder inorganic polymer sludge solidification material not use cement completely, decrease CO in cement production process
2isothermal chamber gas and industrial dust discharged are on the impact of environment.Utilize levigate scrap glass powder to consume scrap glass in a large number to prepare sludge solidification material, avoid the problem that traditional burying method process scrap glass need take a large amount of soil and surrounding environment be produced to severe contamination.Scrap glass is the optimal path recycling scrap glass refuse as a kind of resource for the preparation of sludge solidification material.
(3) flyash, levigate scrap glass powder have good water-reducing effect and very low water-intake rate, and this causes flyash-scrap glass powder inorganic polymer slurry not need admixture high efficiency water reducing agent just can reach requirement to inorganic polymer fluidity of slurry.Often produce 1 ton this kind novel sludge solidification material high efficiency water reducing agent cost savings and reach 5 yuan, produce the 10000 tons of calculating of this kind of new curing material by annual, material cost 50,000 yuan can be saved.
(4) in flyash-scrap glass powder inorganic polymer sludge solidification material preparation process, the admixture of sodium hydroxide and Sodium Pyrosulfite compound activator, accelerate inorganic polymer premature polymerization speed, the concretion body strength that flyash-scrap glass powder inorganic polymer and mud are formed develops soon, scrap glass arogel gel material early hydration reacts the micro expansion compensation the produced early-age shrinkage of silt consolidation body, and discarded adding of polypropylene carpet fiber inhibits the long-term shrinkage cracking of silt consolidation body.Novel coal ash-scrap glass powder inorganic polymer sludge solidification material overcomes traditional flyash-cement inorganic polymer sludge solidification material and cement, concretion body strength need be used in a large number to develop the shortcomings such as slow, drying shrinkage is large, easy to crack, improves the mechanical property of inorganic polymer silt consolidation body, volume stability, significantly reduces the leaching content of heavy metal in induration.The induration formed after flyash-scrap glass powder inorganic polymer curing sludge can be used as civil engineering material to be continued to use, and expands the range of application of flyash-scrap glass powder inorganic polymer sludge solidification material.
Accompanying drawing explanation
Fig. 1 is the preparation flow figure of flyash of the present invention-scrap glass powder inorganic polymer sludge solidification material.
Fig. 2 is the ultimate compression strength of induration after FAC, FAG inorganic polymer solidify material curing sludge.
Fig. 3 is the folding strength of induration after FAC, FAG inorganic polymer solidify material curing sludge.
Fig. 4 is the drying shrinkage value of induration after FAC, FAG inorganic polymer solidify material curing sludge.
Fig. 5 is the alkali_silica reaction swell value of induration after FAC, FAG inorganic polymer solidify material curing sludge.
Fig. 6 is the Leaching of Heavy Metals amount of induration after FAC, FAG inorganic polymer solidify material curing sludge.
Embodiment
The present invention is explained further below in conjunction with the drawings and specific embodiments.
Embodiment 1
The preparation method of flyash-scrap glass powder inorganic polymer sludge solidification material, comprises the following steps:
1, the pre-treatment of mud
After the mud of sewage work, river desilting, reclamation gained is fully stirred, be placed on dewatered drying at outdoor 7-10 days, the 60-80 DEG C of temperature containing ceiling, pulverize by 5mm square hole sieve, remove various impurity in mud.After getting process, mud measures heavy metal in sludge leaching content by U.S. environment protection heat toxicity characteristic leaching method (TCLP, EPAMethod1311).
The preparation of 2, flyash-scrap glass powder inorganic polymer sludge solidification material
2.1, starting material
Discarded white glass beverage bottle carried out sort, clean, dry, after pulverization process by 5mm square hole sieve, remove the impurity in scrap glass and out-of-shape particle.Scrap glass sand to be put into volume be 10L ball mill with 40 revs/min of speed ball millings 40 minutes, and levigate scrap glass powder sealing placement 48 hours, using laser particle analyzer to record levigate scrap glass powder average particle size particle size is 14.878um.
Testing the flyash used is Huaneng Group, Nanjing power plant first level flour coal ash.Mixing water is tap water.Sodium hydroxide and Sodium Pyrosulfite are industrial goods, and discarded polypropylene fibre is discarded carpet chopped strand after treatment, and chopped strand length is less than 12mm.
2.2, flyash-scrap glass powder inorganic polymer sludge solidification material component proportion
Flyash-scrap glass powder inorganic polymer sludge solidification material (FAG) each component proportion is gelling material (flyash+levigate scrap glass powder): mixing water (prepare water that inorganic polymer uses mixing water)=1:0.4, flyash accounts for binder total amount 30%, levigate scrap glass powder accounts for binder total amount 70%, sodium hydroxide concentration is mixing water weight 8%, Sodium Pyrosulfite consumption is mixing water weight 4.5%, and discarded polypropylene carpet fiber is gel material content 0.5%.Traditional flyash-cement (FAC) inorganic polymer sludge solidification material sample as a comparison of sodium hydroxide, Sodium Pyrosulfite, discarded polypropylene carpet fiber will do not mixed simultaneously.Two kinds of inorganic polymer sludge solidification material composition and ratios are in table 1.
Table 1. inorganic polymer sludge solidification material component proportion
2.3, concrete preparation process
2.0-2.5kg sodium hydroxide, 1.0-1.5kg Sodium Pyrosulfite are joined in 28.0-29.0kg mixing water, stirs under 30 revs/min of stirring velocitys and form uniform solution in 2 minutes, control pH value of water solution more than 12.20-25kg flyash, 50-55kg is levigate scrap glass powder, 0.3-0.4kg are discarded polypropylene carpet fiber and put into agitator with 30 revs/min of stirring velocitys mixing 1-2 minute.Then the mixing water solution of sodium hydroxide and Sodium Pyrosulfite is added in container, continues to stir 1-2 hour under 30 revs/min of stirring velocitys.For avoiding inorganic polymer in container bottom lamination, spades need be used to carry out hand mixing 1-2 time to inorganic polymer slurry.Finally, under the stirring velocity of 60 revs/min, accelerate mix 0.5 hour, remove bubble in inorganic polymer slurry, prepare flyash-scrap glass powder inorganic polymer solidify material stand-by.
3, the experiment proportioning of solidify material curing sludge
During curing sludge experiment, solidify material consumption: mud consumption=1:8, the experiment proportioning of two kinds of inorganic polymer solidify material curing sludges is in table 2.
The experiment proportioning of table 2. inorganic polymer solidify material curing sludge
| Sample ID | Solidify material composition (kg) | Mud consumption (kg) | Solidify material/mud |
| FAC-S | 100 | 800 | 1:8 |
| FAG-S | 103.94 | 831.52 | 1:8 |
4, inorganic polymer and mud formed induration ultimate compression strength, folding strength, drying shrinkage value, alkali_silica reaction swell value, heavy metal leaching content measure
When carrying out sludge solidification experiment, in 800-850kg mud, adding the above-mentioned flyash of 100-110kg-scrap glass powder inorganic polymer solidify material, to stir 2 minutes under the stirring velocity of 60 revs/min, forming homogeneous inorganic polymer mud slurry.Inorganic polymer mud slurry is poured in 40mm × 40mm × 160mm tri-gang mould, prepares ultimate compression strength and folding strength detection that 12 pieces of samples carry out the induration of 1,3,7,28d curing sludge.Other are newly mixed inorganic polymer mud slurry and are poured in 25mm × 25mm × 285mm tri-gang mould, prepare induration drying shrinkage value and the detection of alkali_silica reaction swell value that 6 pieces of samples are cured mud.Remaining inorganic polymer mud slurry is built in φ 40mm × 80mm mould, prepares 3 pieces of samples and carries out the detection of silt consolidation body weight metal leaching content.Finally the die trial that FAG-S inorganic polymer mud slurry is housed is placed on indoor (temperature 25 DEG C, humidity 55-65%), after 24 hours, sample removes and is placed on temperature from die trial is 20 DEG C, and humidity is 90 ± 5% curing rooms until test the length of time.Prepare equal amts FAC-S inorganic polymer mud slurry under the same terms, carry out contrast experiment.
The performance of the induration after flyash prepared by the present invention-scrap glass powder inorganic polymer sludge solidification material curing sludge is as follows:
After being illustrated in figure 2 FAC, FAG inorganic polymer solidify material curing sludge, the ultimate compression strength of induration contrasts, can find out in figure, in different curing age, the induration after FAG powder inorganic polymer curing sludge has the higher ultimate compression strength of the induration after than traditional F AG inorganic polymer curing sludge.
After being illustrated in figure 3 FAC, FAG inorganic polymer solidify material curing sludge, the folding strength of induration contrasts, can find out in figure in different curing age, the induration after FAG inorganic polymer curing sludge has the higher folding strength of the induration after than traditional F AC inorganic polymer curing sludge.
Be illustrated in figure 4 the drying shrinkage value of induration after FAC, FAG inorganic polymer solidify material curing sludge, in figure, can find out that the induration after FAG inorganic polymer curing sludge has the lower drying shrinkage value of the induration after than traditional F AC inorganic polymer curing sludge.
Be illustrated in figure 5 the alkali_silica reaction swell value of induration after FAC, FAG inorganic polymer solidify material curing sludge, in figure, can find out that the induration after FAG inorganic polymer curing sludge has the larger alkali_silica reaction of the induration after than traditional F AC inorganic polymer curing sludge and expands.
Be illustrated in figure 6 the Leaching of Heavy Metals amount of induration after FAC, FAG inorganic polymer solidify material curing sludge, in figure, can find out that the induration after FAG inorganic polymer curing sludge has the lower Leaching of Heavy Metals amount of the induration after than traditional F AC inorganic polymer curing sludge.
Flyash prepared by the present invention-scrap glass powder inorganic polymer solidify material does not use cement, curing speed fast completely, and induration volume stability is good, the Leaching of Heavy Metals amount of induration is low.Use flyash, scrap glass powder are prepared inorganic polymer sludge solidification material and are had wide Application Areas, can produce good technology, economy, society and environmental benefit.
Claims (4)
1. a preparation method for flyash-scrap glass powder inorganic polymer sludge solidification material, is characterized in that comprising the following steps:
(1) scrap glass sorted, clean, dry, after pulverization process, sieve, remove the impurity in scrap glass and particle in irregular shape; Then scrap glass particle is put into ball mill ball milling after 30-60 minute levigate scrap glass powder stand-by;
(2) sodium hydroxide and Sodium Pyrosulfite are dissolved in mixing water, control stirring velocity and pH value of water solution, make it form uniform solution;
(3) by gelling material, the container that agitator is housed put into by discarded polypropylene carpet fiber, described gelling material is flyash and levigate scrap glass powder, with 30 revs/min of stirring velocity mixing 1-2 minute, then the mixing water solution containing sodium hydroxide and Sodium Pyrosulfite is joined in container, continue to stir 1-2 hour under 30 revs/min of stirring velocitys, for avoiding inorganic polymer in container bottom lamination, spades need be used to carry out hand mixing 1-2 time to inorganic polymer slurry, finally, mix is accelerated 0.5 hour under the stirring velocity of 60 revs/min, remove bubble in slurry, prepare flyash-scrap glass powder inorganic polymer solidify material.
2. the preparation method of flyash according to claim 1-scrap glass powder inorganic polymer sludge solidification material, it is characterized in that, in step (2), sodium hydroxide concentration is 8% of mixing water weight, and Sodium Pyrosulfite consumption is 4.5% of mixing water weight.
3. the preparation method of flyash according to claim 1-scrap glass powder inorganic polymer sludge solidification material, is characterized in that, controls speed of mixing and control more than 12 at 30 revs/min and pH value of water solution in step (2).
4. the preparation method of flyash according to claim 1-scrap glass powder inorganic polymer sludge solidification material, is characterized in that, in step (3), discarded polypropylene carpet fiber is 0.5% of gel material content.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928591A (en) * | 2019-04-18 | 2019-06-25 | 常州机电职业技术学院 | Sludge curing agent based on waste recycling and sludge treatment method |
| CN110922159A (en) * | 2019-11-24 | 2020-03-27 | 沈阳理工大学 | Alkali-activated waste brick powder solidified heavy metal ion light heat-insulating material and preparation method thereof |
| CN111410449A (en) * | 2020-03-27 | 2020-07-14 | 芜湖市骏辰新型材料有限公司 | High-strength composite filler for concrete and preparation method and application thereof |
| CN112321269A (en) * | 2020-10-27 | 2021-02-05 | 南京林业大学 | Carbon dioxide carbonized regeneration water permeable brick and preparation process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111410449A (en) * | 2020-03-27 | 2020-07-14 | 芜湖市骏辰新型材料有限公司 | High-strength composite filler for concrete and preparation method and application thereof |
| CN112321269A (en) * | 2020-10-27 | 2021-02-05 | 南京林业大学 | Carbon dioxide carbonized regeneration water permeable brick and preparation process thereof |
| CN112321269B (en) * | 2020-10-27 | 2022-04-08 | 南京林业大学 | Carbon dioxide carbonized regeneration water permeable brick and preparation process thereof |
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Denomination of invention: Preparation method of fly ash waste glass powder inorganic polymer sludge solidification material Effective date of registration: 20230927 Granted publication date: 20170704 Pledgee: Bank of China Limited by Share Ltd. Hohhot Yuquan branch Pledgor: Inner Mongolia Yuyi Environmental Protection Technology Development Co.,Ltd. Registration number: Y2023150000146 |
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