CN101602567B - Waste mud solidification processing method based on polypropylene acetamide - Google Patents
Waste mud solidification processing method based on polypropylene acetamide Download PDFInfo
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- CN101602567B CN101602567B CN200910157903XA CN200910157903A CN101602567B CN 101602567 B CN101602567 B CN 101602567B CN 200910157903X A CN200910157903X A CN 200910157903XA CN 200910157903 A CN200910157903 A CN 200910157903A CN 101602567 B CN101602567 B CN 101602567B
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- waste mud
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- mud
- solidification
- processing method
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- 239000002699 waste material Substances 0.000 title claims abstract description 66
- 238000007711 solidification Methods 0.000 title claims abstract description 26
- 230000008023 solidification Effects 0.000 title claims abstract description 26
- -1 polypropylene acetamide Polymers 0.000 title claims abstract description 14
- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 17
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 15
- 239000010440 gypsum Substances 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 8
- 239000004571 lime Substances 0.000 claims abstract description 8
- 230000018044 dehydration Effects 0.000 claims abstract description 6
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 8
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 20
- 238000010276 construction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000002440 industrial waste Substances 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 8
- 235000012255 calcium oxide Nutrition 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000003912 environmental pollution Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation 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
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000012633 leachable Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a composite mud solidification processing method for solidification processing waste mud generated in geotechnical engineering construction, and dredged sludge generated in hydraulic engineering construction. A composite solidification material is prepared by adding polypropylene acetamide into the waste mud for dehydration, using cement as the base, adding lime, fine sand, fly ash, and industrial waste gypsum or the like according to a determine proportion, and mixing uniformly. The invention greatly enhances solidification effect of waste mud, reduces economic cost, and implements normal condensation and solidification in relative low temperature, having features of great stability performance, little amount of resolving-out matter. The invention not only solves the problems of piling up of the waste mud, land occupation in throwing filling and environment pollution, but also reaches the object of waste mud handling and utilization, thus has great economic and social benefit.
Description
Technical field
The present invention relates to a kind of waste mud solidification processing method, be applicable to the waste mud that produces in the geotechnical engineering construction (as castinplace pile boring etc.), and the solidification treatment of the dredging silt that produces in the construction of hydro project, civil engineering work material technology field belonged to.
Background technology
The waste mud that produces in (as castinplace pile boring etc.) in the geotechnical engineering construction, and the dredging silt that produces in the construction of hydro project, it is the very poor weak soil of a kind of character, if dirty mud sump is idle for a long time, can take valuable land resources, and under state of nature, be difficult to degraded, pollute to surrounding environment.Material can be utilized as being translated into, then its high-moisture percentage, low intensive character must be improved by certain processing.And China is carrying out large-scale engineering construction, as road construction, port construction, embankment build or reinforce, building embankment etc. and firing brick-and tile etc. all need a large amount of geotechnological materials, with soil generally by excavation plough, sand is adopted in the riverbed, cut into a mountain for quarrying etc., and method obtains.But large-scale the shoveling adopted sand, can cause disadvantageous effects such as bed scour, soil erosion and farmland minimizing.Therefore, waste mud is carried out effective solidification treatment, landfill second ploughing or as material of construction on the spot, the direction of representing waste mud to handle, not only solve the waste mud stacking, thrown the problems such as using soil and environmental pollution that occupies, and can reach the purpose of waste mud disposal and recycling.
To the solidification treatment of waste mud, generally adopt cement, lime etc. at present as solidifying agent.Because waste mud water content height, solid-state inorganic particle content is low, the hydrated product that formed intensity of solidification treatment and sealing, stabilising effect mainly rely on solidify material itself to form produces, therefore, make solidified slip satisfy the requirement of mechanical property and chemical stability two aspects, must mix a large amount of solidify material, cause the high present situation of solidification treatment cost, influence this The Application of Technology and development.
The present invention dewaters by mixing polypropylene acetamide earlier in waste mud, adds materials such as fine sand, desulfurization waste gypsum, unslaked lime and flyash then in Portland cement, has developed a kind of compound slurry curing agent.Adding part coarse particles material (fine sand or flyash) improves the material composition of waste mud when mixing cement, can relatively reduce clay content, improves grain composition, makes and is originally that " clay matrix " structure is to " granular skeleton " structural transformation.In addition, flyash is artificial pozzolanic materials, its main component is siliceous (SiO2) or alumina-silica (Al2O3, SiO2Al2O3), material itself does not have or has only very weak gelling property, but under the effect of water, be subjected to the alkaline excitation of unslaked lime or the sulphate activation of waste gypsum, can generate new hydrated product, make the fixed waste mud body sclerosis of desire.
This solidification processing method has improved the solidification effect of waste mud greatly, has reduced cement consumption, has reduced cost, and can be under lower temperature normal setting and harden, the characteristic that having water stability can be good, leachable is few.In addition, in cement, mix industrial wastes such as flyash and desulfurization waste gypsum, reduced environmental pollution, promoted the recycle of waste material, have good economic benefit and social benefit.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can be applied to the high-performance of actual waste mud treatment and disposal, cheap solidification processing method.This waste mud solidification processing method has mixed industrial wastes such as flyash and desulfurization waste gypsum in cement, reduced environmental pollution, reaches the purpose of waste mud disposal and recycling.
Waste mud solidification processing method of the present invention is formed by dewatering and solidifying two steps.Wherein the dehydrating material polypropylene acetamide mass ratio of first step adding is 0.8%～1.2%; The cement quality ratio is 27%～32% in the second step solidifying agent, fine sand mass ratio 35%～40%, unslaked lime mass ratio 3%～5%, flyash mass ratio 8%～10%, desulfurization waste gypsum mass ratio 12%～16%.
Waste mud curing of the present invention, the dehydrating material polypropylene acetamide that first step adopted is a white crystalline powder.
Waste mud curing of the present invention, the cement that second step is adopted is the ordinary Portland cement of label 425.
Waste mud curing of the present invention, the fine sand that second step is adopted is the sand of fineness modulus 2.0.
Waste mud curing of the present invention, the lime that second step is adopted is calcium lime powder, CaO content is 90%, fineness 300 orders.
Waste mud curing of the present invention, the flyash that second step is adopted are a kind of artificial pozzolanic materials that coal-fired power plant discharges, fineness 400 orders.
Waste mud curing of the present invention, the gypsum that second step is adopted are power station desulfurization waste gypsum, wherein: sulphur trioxide＞40%, water ratio＜10%, fineness 200 orders.
In sum, the present invention has put down in writing a kind of waste mud solidification processing method, it is characterized in that this method divides two steps: the first step add earlier with the waste mud weight ratio be that 1% polypropylene acetamide dewaters; Second step added the mud of solidifying agent after to dehydration and is cured, this solidifying agent by cement, fine sand, lime, waste gypsum and flyash with weight ratio 20: 25: 2.5: form at 10: 5.
Beneficial effect of the present invention: this high-performance waste mud solidification processing method, only need to add in advance polypropylene acetamide and slough portion water, add cement, fine sand, unslaked lime, flyash and desulfurization waste gypsum in proportion according to the water content of dehydration back waste mud then, and stir and get final product.The intensity of slurry curing body can realize by regulating mixing recently of solidifying agent.This solidification processing method has improved the solidification effect of waste mud greatly, has reduced Financial cost, has not only solved the waste mud stacking, has thrown the problems such as using soil and environmental pollution that occupies, and can reach the purpose of waste mud disposal and recycling.
Embodiment
Embodiment 1
Adopt mortar testing routine size, specimen size is 70.7mm * 70.7mm * 70.7mm.The mud for the treatment of solidification treatment is building site, Wenzhou City cast-in place pile waste mud, and water ratio is 190%, and density is 1300kg/m3.Earlier waste mud is carried out processed, will inject die trial after solidifying agent and the mud uniform mixing then, manual inserting smash, make the mud face be higher than die trial 3～5mm, one end of mentioning die trial vibrates 5～10 times, and the other end of mentioning die trial again vibrates 5～10 times, scrapes plane surface.In 20 ℃ of following maintenance 24h of room temperature demoulding, put into the standard curing room maintenance behind the test block forming.Measured the unconfined compression strength of slurry curing body to the 7 day length of time.The dehydrating material polypropylene acetamide that is adopted is a white crystalline powder.The solidifying agent preparation raw material is: the cement that is adopted is the ordinary Portland cement of label 425; The lime that is adopted is calcium lime powder, and CaO content is 90%, fineness 300 orders; The fine sand that is adopted is the sand of fineness modulus 2.0; The flyash that is adopted is a kind of artificial pozzolanic materials that coal-fired power plant discharges, fineness 400 orders; The gypsum that is adopted is a power station desulfurization waste gypsum, wherein: sulphur trioxide＞40%, water ratio＜10%, fineness 200 orders.
Waste mud dehydration component prescription sees Table 1; The component prescription that process is joined in the solidifying agent examination sees Table 2～4, and the required solidified waste mud in every assembly side is 500ml, and the dehydrating material polypropylene acetamide that mixes in advance is 1.0g.Various material permissible variations see Table 5 in the process for preparation.
Each composition weight proportioning of table 1 waste mud dehydration
Each composition weight proportioning of process is joined in the examination of table 2 waste mud solidifying agent
Each composition weight proportioning of process is joined in the examination of table 3 waste mud solidifying agent
Each composition weight proportioning of process is joined in the examination of table 4 waste mud solidifying agent
The various material metering of table 5 permissible variation
| Polypropylene acetamide | Cement | Fine sand | Unslaked lime | The desulfurization waste gypsum | Flyash |
| ±0.2％ | ±2％ | ?±2％ | ±1％ | ±1％ | ±1％ |
By above each example as seen, along with the incorporation of polypropylene acetamide increases, dehydrating amount increases, but when polypropylene acetamide volume during greater than 1.0g, the dehydrating amount raising is not obvious.
Only with cement during as solidifying agent, when its volume was 40g, waste mud was difficult to curing molding, can not satisfy the purpose of movement requirement and recycling.For compound solidifying agent, along with the increase of cement mixed ratio, intensity increases, and the final setting time of waste mud shortens.
By above test-results as seen, adopt cement: 20g, fine sand: 25g, unslaked lime: 2.5g, desulfurization waste gypsum: 10g, the intensity (the 7 day length of time) of the hardener formula of composite curing agent prescription and the cement of flyash: 5g: 55g (satisfying the minimum cement mixing content of waste mud landfill requirement) maintains an equal level, and it is about 10% that the waste mud final setting time shortens, when satisfying the requirement of engineering landfill and can save construction costs 20%.
Claims (3)
1. waste mud solidification processing method is characterized in that this method divides two steps: the first step add earlier with the waste mud weight ratio be that 1% polypropylene acetamide dewaters; Second step added the mud of solidifying agent after to dehydration and is cured, this solidifying agent by cement, fine sand, lime, waste gypsum and flyash with weight ratio 20: 25: 2.5: form at 10: 5.
2. waste mud solidification processing method as claimed in claim 1 is characterized in that: cement is the ordinary Portland cement of label 425.
3. waste mud solidification processing method as claimed in claim 1 is characterized in that: fine sand is the sand of fineness modulus 2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157903XA CN101602567B (en) | 2009-07-16 | 2009-07-16 | Waste mud solidification processing method based on polypropylene acetamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157903XA CN101602567B (en) | 2009-07-16 | 2009-07-16 | Waste mud solidification processing method based on polypropylene acetamide |
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| Publication Number | Publication Date |
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| CN101602567A CN101602567A (en) | 2009-12-16 |
| CN101602567B true CN101602567B (en) | 2011-04-13 |
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| CN200910157903XA Expired - Fee Related CN101602567B (en) | 2009-07-16 | 2009-07-16 | Waste mud solidification processing method based on polypropylene acetamide |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241501A (en) * | 2011-05-19 | 2011-11-16 | 江苏聚慧科技有限公司 | Silt quickly solidifying material |
| CN102815853A (en) * | 2011-06-10 | 2012-12-12 | 湖北中科博策新材料研究院 | Harmless mud processing method for sewage treatment plant |
| CN102408179A (en) * | 2011-07-25 | 2012-04-11 | 江苏东方生态清淤工程有限公司 | Dewatered sludge solidifying agent |
| US9382143B2 (en) | 2011-11-02 | 2016-07-05 | Empire Technology Development Llc | Solidifying sludge |
| CN103351126A (en) * | 2013-07-09 | 2013-10-16 | 华侨大学 | A kind of new concrete slurry material and preparation method thereof |
| CN103288330A (en) * | 2013-07-10 | 2013-09-11 | 江苏坤泽科技股份有限公司 | Freshwater sludge curing agent |
| CN103435298B (en) * | 2013-08-08 | 2015-04-22 | 中国石油化工股份有限公司 | Method of utilizing well-drilling solid waste soil to prepare concrete or concrete blocks |
| CN103641290A (en) * | 2013-12-09 | 2014-03-19 | 天津工业大学 | Sludge dewatering concentration and consolidation treatment method |
| CN105293962A (en) * | 2015-10-14 | 2016-02-03 | 马鞍山十七冶工程科技有限责任公司 | Geotechnical engineering waste slurry efficient solidifying agent |
| CN106904816A (en) * | 2017-03-13 | 2017-06-30 | 深圳宏业基岩土科技股份有限公司 | A kind of conditioner of shield waste mud fast dewatering solidification and its preparation method and application method |
| CN106904916B (en) * | 2017-03-20 | 2019-05-03 | 深圳宏业基岩土科技股份有限公司 | One kind filling out extra large cofferdam mold bag curing soil and its preparation method and application method |
| CN107459249B (en) * | 2017-08-28 | 2021-02-12 | 西安理工大学 | Method for solidifying river sludge |
| CN108117358B (en) * | 2017-12-29 | 2020-10-27 | 福建建工建材科技开发有限公司 | Curing method for waste soil composite treatment |
| CN111410468A (en) * | 2020-05-14 | 2020-07-14 | 广东华泱技术有限公司 | Application of river channel solid waste on roadbed material |
| CN115196938A (en) * | 2022-08-08 | 2022-10-18 | 中电建路桥集团有限公司 | Slurry slag curing treatment, construction building slurry and construction method |
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2009
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