CN101381191A - Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use - Google Patents
Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use Download PDFInfo
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- CN101381191A CN101381191A CNA2008101717251A CN200810171725A CN101381191A CN 101381191 A CN101381191 A CN 101381191A CN A2008101717251 A CNA2008101717251 A CN A2008101717251A CN 200810171725 A CN200810171725 A CN 200810171725A CN 101381191 A CN101381191 A CN 101381191A
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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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Abstract
The invention discloses a sludge treatment method, as well as sludge foamed lightweight concrete produced through the method and application thereof. In the method, sludge produced by sewage treatment first reacts with quicklime so as to form sludge hydrated lime; then the sludge hydrated lime is mixed with cement and water so as to form sludge concrete; foaming agent produces foam by utilizing a foaming system of a foaming machine; and the foam is mixed with the sludge concrete. The sludge treatment method can directly obtain the sludge foamed lightweight concrete. The sludge foamed lightweight concrete has a plurality of functions, which can be used as a filling material, a heat insulating material, a walling material, a sound insulation material, a mine tunnel filling material, an artificial landscape manufacturing material, a road recovery material, a pipe base filling material and the like. The sludge treatment method is low in cost and friendly to environment, can directly produce the sludge foamed lightweight concrete with a plurality of functions, and not only solves the sludge treatment problems in the sewage treatment industry, but also ensures the full utilization of the sludge.
Description
Technical field
The present invention relates to a kind of handle and the recycle method of mud and product of this method production and uses thereof, specifically, the present invention relates to a kind of method and the light foaming concrete that adopts this method production and purposes of this light foaming concrete of utilizing sludge produced by sewage treatment to produce light foaming concrete.
Background technology
Sewage disposal is that the impurity in the sewage is condensed into the process that semi-solid form is separated again from fluid, and the pasty state of separating concentrates matter and is mud.The processing of mud is the difficult problem of puzzlement sewage treatment industry always, and sludge treatment device accounts for the initial cost of the 40%-60% of sewage work greatly, and sewage work's 50% left and right sides cost is the sludge treatment expense.
Traditional method for sludge treatment be at first to mud dewater, drying, burn again or landfill.Such treatment process exists following shortcoming and difficulty: (1) since mud in the pasty state, and the water ratio of primary sludge is up to more than 95%, must repeatedly dewater and drying, need expensive dehydration and drying plant and huge energy expenditure, and need huge disposal field; (2) burning sludge meeting severe contamination air; (3) because of containing various heavy and other hazardous and noxious substances in the mud, behind the landfill, these heavy metals and hazardous and noxious substances can permeate the ground in the water, severe contamination underground water; (4) dehydration and the dry mud that finishes burn and landfill as refuse, not only do not make mud obtain recycle, and huge dehydration, drying, burning, landfill and other costs and expense are undoubtedly serious waste.
Summary of the invention
In order to solve the difficult problem of sludge treatment, the invention provides a kind of sludge treatment method, this method not only can not cause environmental pollution, and with low cost, can also produce the sludge foaming lightweight concrete that serves many purposes simultaneously.The enforcement of this method not only can solve the sludge treatment problem that sewage treatment industry faces, and can be by the recovery of mud and the light foaming concrete that utilizes production to serve many purposes.
The invention provides a kind of method for sludge treatment, this method for sludge treatment comprises the steps:
(1) in mud, adds unslaked lime, fully stir, thereby make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime;
(2) in the sludge hydrated lime that step (1) produces, add cement and water, fully stir, form sludge concrete;
(3) foamed system by foaming machine fully foams whipping agent with mechanical system, and with uniform mixing on the mud coagulation of foam and step (2) generation.
In the method for sludge treatment of the present invention, the mud in the step (1) can be not through the primary sludge of dehydration, drying, concentration, also can be the thickened sludge through preliminary hydro-extraction, drying treatment.In step (1), the main component calcium oxide of unslaked lime and the water generation chemical reaction in the mud generate white lime (main component is a calcium hydroxide), its chemical equation:
CaO+H
2O＝＝Ca(OH)
2
Owing to have only water and unslaked lime in the mud to react, still contain mud in the products therefrom of reaction back, be called sludge hydrated lime so will react the mixture of back formation.
Method for sludge treatment of the present invention, the mud in the step (1) and the part by weight of unslaked lime are 1:1 to 6:1.Unslaked lime in the step (1) preferably uses calcium lime powder.
Method for sludge treatment of the present invention, in step (2), the weight percent of each component is: sludge hydrated lime 30%--60%, cement 15%--40%, water 10%--40%.The preferred weight percent of each component is: sludge hydrated lime 40%--50%, cement 20%--35%, water 20%--30%.The optimum weight per-cent of each component is: sludge hydrated lime 50%, cement 25%, water 25%.
In step (2), can also in sludge hydrated lime, add flyash, described flyash can be the fine coal meeting that forms in the chimney, also can be the cinder that other combustionmaterial burning backs form is pulverized the flyash that the back forms.Under the situation that adds flyash, the weight percent of each component is: sludge hydrated lime 30%--60%, cement 10%--30%, flyash 5%--20%, water 10%--30%.The preferred weight percent of each component is: sludge hydrated lime 40%--50%, cement 15%--25%, flyash 10%--15%, water 15%--25%.The optimum weight per-cent of each component is: sludge hydrated lime 50%, cement 20%, flyash 10%, water 20%.
Whipping agent in the step (3) is to produce the employed whipping agent of common foamed concrete, such as RA rosin acid class whipping agent, metallic aluminium powder whipping agent, vegetable-protein whipping agent, animal protein foaming agent, sodium resinate class whipping agent, hydrolysis blood glue whipping agent, mahogany acid aluminium whipping agent etc., also can be mixtures two or more in them.The weight of used whipping agent is the 1%--10% of the sludge concrete weight of step (2) generation, and preferred 2%--5% is as 3%.
Method for sludge treatment of the present invention, the sludge foaming lightweight concrete that step (3) produces is by the jet orifice ejection of foamed system.
The invention provides on a kind of sludge foaming lightweight coagulation, this sludge foaming lightweight concrete contains dewatered sludge, white lime, cement, water, whipping agent, portion is formed with a large amount of foam holes within it, this sludge foaming lightweight concrete adopts following method to prepare: add unslaked lime in mud, fully stir, make the water generation chemical reaction in unslaked lime and the mud, form sludge hydrated lime; In sludge hydrated lime, add cement and water, and fully stir, form sludge concrete; Foamed system by foaming machine fully foams whipping agent with mechanical system then, and with foam and sludge concrete uniform mixing, promptly obtains sludge foaming lightweight concrete.
Can also contain flyash in the sludge foaming lightweight concrete of the present invention, in its preparation method, in sludge hydrated lime, add in cement and the water, add flyash again, can make in the sludge foaming lightweight concrete of final preparation and contain flyash.
Adopt method for sludge treatment of the present invention to handle mud and directly obtain sludge foaming lightweight concrete of the present invention.
Because in step (1), water section in the mud or all with unslaked lime in calcium oxide generation chemical reaction generate white lime, be that unslaked lime plays the effect of dehydration to mud, so contain dewatered sludge and white lime in the final sludge foaming lightweight concrete that forms of method for sludge treatment of the present invention.
Sludge foaming lightweight concrete of the present invention has following performance: 1. light weight, and volume density is 300-1500kg/m3, is equivalent to about 1/5～1/10 of normal concrete; 2. crushing resistance, ultimate compression strength and have good lateral pressure resistant performance more than 1.2Mpa, can produce the sludge foaming lightweight concrete of varying strength as required; 3. heat retaining property, extremely low thermal conductivity, thermal conductivity is lower than 0.2W/ (mk); 4. sound insulation contains a large amount of separated foams, and is evenly distributed in the sludge foaming lightweight concrete, sound absorbing power is 0.09-0.19%, is 5 times of normal concrete, possesses unique sound insulation function; 5. have good thermal insulation, thermal resistance is about 20-30 times of normal concrete, can play good effect of heat insulation; 6. the low shock resistance that plays, the porousness of sludge foaming lightweight concrete makes it have lower Young's modulus, thereby makes its impact load have good absorption and dispersion, and externally the power effect shows cushion, has improved shock resistance; 7. low absorptivity, sludge foaming lightweight concrete have tough and independently foaming connect, specific absorption makes it have certain protection against the tide, anti-permeability performance in 25%; 8. good integrity, but the cast-in-site construction combine closely with main construction, need not stay boundary's space and permeability cell; 9. from filling and self compacting ability, adopt this sludge foaming lightweight concrete operation, need not the machinery compacting, can fill voluntarily with closely knit; 10. pumpability is good, and mud foamed concrete has unique liquid and tough foaming, adds mobile strong, can carry out long distance pumping, and the operation injectability is strong, the mechanization degree height, but large-area construction is used to fill the tunnel and as the bed course of various interior of buildings.
The invention provides of the application of a kind of sludge foaming lightweight concrete, especially as the application of narrow slit, narrow groove packing material in roadbed, abutment packing material and the buildings as the building packing material.Owing to have good self-compacting from filling properties and lateral pressure resistant performance after sludge foaming lightweight concrete of the present invention solidifies, when being used as the building packing material, need not the machinery compacting, can form stable, firm obturator.If be used for roadbed, abutment packing material, can avoid roadbed, settlement; To carrying out narrow slit, the narrow groove of machinery compacting, sludge foaming lightweight concrete of the present invention can form the obturator with certain intensity in narrow slit, narrow groove.
The invention provides of the application of a kind of sludge foaming lightweight concrete as building thermal insulation material.Because sludge foaming lightweight concrete of the present invention has extremely low thermal conductivity, thermal conductivity is lower than 0.2W/ (mk), is used as lagging material, has good heat insulation effect.
The invention provides of the application of a kind of sludge foaming lightweight concrete as the body of wall construction material.Sludge foaming lightweight concrete of the present invention has certain compressive property, and ultimate compression strength and has good lateral pressure resistant performance more than 1.2Mpa, can be used for wall constructed; In addition, because it has in light weight, low density performance, with its wall constructed weight that can reduce body of wall itself.When especially adopting sludge foaming lightweight concrete of the present invention to construct non-bearing wall body, have certain intensity, reduce pressure, and have good sound insulation and heat insulation effect other structures in the buildings.
The invention provides of the application of a kind of sludge foaming lightweight concrete as sound-proof material.Such as, be used for making insulating board.Owing to contain a large amount of separated foams in the sludge foaming lightweight concrete of the present invention, and be evenly distributed, sound absorbing power is 0.09-0.19%, be 5 times of normal concrete, possesses unique sound insulation function, so can be used as sound-proof material, be used for making insulating board, for example the insulating board between urban road and the residential quarter.
The invention provides of the application of a kind of sludge foaming lightweight concrete as tunnel, mine packing material.After the mining of zone, mine, coal mining, quarrying, can form various tunnels, because sludge foaming lightweight concrete of the present invention has good self-compacting ability of filling certainly and lateral pressure resistant performance, after utilizing the anti-road of sludge foaming lightweight concrete backfill of the present invention, sedimentation can not take place in the mining area, mining area safety be can improve, the redevelopment in mining area and utilization again helped.
The invention provides the application of a kind of sludge foaming lightweight concrete in making man-made tourist site.Sludge foaming lightweight concrete of the present invention has pumpability, and is mobile strong, can carry out long distance pumping, and have certain intensity after solidifying, and can be used for making man-made tourist site, as artificial hillock.
The invention provides a kind of sludge foaming lightweight concrete as the speedily carry out rescue work application of material of road.Road subsides or damaged situation happens occasionally, and in order to guarantee The coast is clear, often needs to carry out road emergency and speedily carries out rescue work.Because sludge foaming lightweight concrete of the present invention has moderate ultimate compression strength, subside or breakage is filled sludge foaming lightweight concrete of the present invention at road, as the road emergency material of speedily carrying out rescue work, can ensure The coast is clear, root out when also being convenient to road rehabilitation and excavate.
The invention provides of the application of a kind of sludge foaming lightweight concrete as the basic packing material of pipe.When laying various pipeline, pipeline is transferred and will be laid packing material, lay soil or sand during traditional constructional method as packing material, because of the existence of pipeline is difficult to carry out the machinery compacting, especially the laying of alleyway pipeline, owing to be subjected to the restriction of surrounding environment, be difficult to carry out the machinery compacting more, because of soil and sand softer, sedimentation in various degree can take place, especially sand can run off with rainwater, sedimentation phenomenon is more serious, can cause pipe base the cavity to occur like this, cause piping displacement, even cause pipeline break because of unbalance stress.Because sludge foaming lightweight concrete of the present invention has from filling the self-compacting function, adopts sludge foaming lightweight concrete of the present invention as the pipeline packing material, need not mechanical compacting and can reach closely knit effect, effectively avoids the generation of sedimentation phenomenon; In addition, after sludge foaming lightweight concrete of the present invention solidifies, can form and the corresponding Guan Ji of the shape of pipeline, can make pipeline keep stable.
Method for sludge treatment of the present invention is not only with low cost, the protection environment; and can reach the effect of mud recycle; can produce the sludge foaming lightweight concrete that serves many purposes; also can be that the flyash that pile up like a mountain obtains recycle simultaneously, meet resource utilization, minimizing, the harmless treatment requirement of solid waste.
Description of drawings
Accompanying drawing is a method for sludge treatment process flow sheet of the present invention.
Embodiment
At first, in mixing system 1, add mud and unslaked lime, under the stirring of stirring system 2, make the water reaction in unslaked lime and the mud, generate sludge hydrated lime; Then, cement and water are added in the mixing system 1, under the stirring of stirring system 2, make their thorough mixing, form sludge concrete.Inhale at pump under the effect of foamed system 4, make in sludge concrete in the mixing system 1 and the whipping agent bucket 3 whipping agent enter pump and inhale foamed system 4, inhale in the foamed system 4 at pump, foam that whipping agent produces and sludge concrete mix, and promptly produce sludge foaming lightweight concrete.
Can also add flyash when in mixing system 1, adding cement and water.Pump is inhaled jet orifice 5 ejections of the sludge foaming lightweight concrete of formation in the foamed system 4 by pump suction foamed system 4.
Below by embodiment, sludge foaming lightweight concrete that method for sludge treatment of the present invention and this method are formed and uses thereof is further described.Embodiment and the following examples only are for technical scheme of the present invention is described, are not limitation of the present invention.
In 1000 gram mud, add 1000 gram unslaked limes, fully stir, make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime; In sludge hydrated lime, add cement 800 grams, flyash 400 grams, water 800 grams then, fully stir, form sludge concrete; Foamed system by foaming machine fully foams 120 gram whipping agents with mechanical system, with foam and sludge concrete uniform mixing, can obtain sludge foaming lightweight concrete.
In 1000 gram mud, add 750 gram unslaked limes, fully stir, make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime; In sludge hydrated lime, add cement 875 grams, flyash 650 grams, water 1100 grams then, fully stir, form sludge concrete; Foamed system by foaming machine fully foams 87.5 gram whipping agents with mechanical system, with foam and sludge concrete uniform mixing, can obtain sludge foaming lightweight concrete.
In 1000 gram mud, add 500 gram unslaked limes, fully stir, make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime; In sludge hydrated lime, add cement 1070 grams, flyash 645 grams, water 1070 grams then, fully stir, form sludge concrete; Foamed system by foaming machine fully foams 215 gram whipping agents with mechanical system, with foam and sludge concrete uniform mixing, can obtain sludge foaming lightweight concrete.
In 1000 gram mud, add 250 gram unslaked limes, fully stir, make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime; In sludge hydrated lime, add cement 625 grams, flyash 470 grams, water 780 grams then, fully stir, form sludge concrete; Foamed system by foaming machine fully foams 62.5 whipping agents with mechanical system, with foam and aforementioned mixture uniform mixing, can obtain sludge foaming lightweight concrete.
Embodiment 5
The sludge foaming lightweight concretes that embodiment 1,2,3 or 4 is produced are by cast-in-site, as roadbed, abutment packing material, fill closely knitly after sludge foaming lightweight concrete solidifies voluntarily, can avoid road surface, bridge floor sedimentation.
Embodiment 6
The sludge foaming lightweight concretes that embodiment 1,2,3 or 4 is produced are by cast-in-site, as narrow slit, narrow groove packing material in the building structure, fill closely knitly after sludge foaming lightweight concrete solidifies voluntarily, need not to carry out machinery and tamp.
Embodiment 7
The sludge foaming lightweight concretes that embodiment 1,2,3 or 4 is produced spread upon the outside surface of buildings, as lagging material, can avoid winter indoor heat to scatter and disappear, and can avoid summer in the outdoor heat inlet chamber.
Embodiment 8
Adopt non-bearing wall body in embodiment 1,2,3 or the 4 sludge foaming lightweight concrete building constructions that produce, the wall weight of constructing is light, not only can alleviate the pressure of body of wall to other structures of buildings, and has good soundproof effect.
Embodiment 9
Embodiment 10
Adopt embodiment 1,2,3 or 4 sludge foaming lightweight concretes that produce to fill tunnel, waste and old colliery, sludge foaming lightweight concrete solidifies the back fills closely knitly, and can form firm obturator, can sedimentation, improve security.
Embodiment 11
Embodiment 12
The sludge foaming lightweight concretes that embodiment 1,2,3 or 4 is produced lay or are filled in that road subsides or breakage, and make the sludge foaming lightweight concrete of laying or filling concordant with the intact part of road, make the road maintenance unimpeded.When road rehabilitation, the sludge foaming lightweight concrete that will solidify is rooted out with comparalive ease.
Embodiment 13
When the pipe laying of alleyway, the sludge foaming lightweight concretes that embodiment 1,2,3 or 4 is produced are laid on pipeline and transfer, as the pipe sill, then circular pipe is laid on the sludge foaming lightweight concrete, need not to carry out the machinery compacting, can fill closely knitly, after sludge foaming lightweight concrete solidifies, can below pipeline, form firm Guan Ji.
The present invention can also summarize with other specific forms without prejudice to spirit of the present invention or principal character.Therefore; no matter from which point; above-mentioned embodiment of the present invention can only be thought can not limit the present invention to explanation of the present invention; claim has been pointed out technical scheme of the present invention and scope; therefore; in implication suitable and any modification in the scope, all will be understood that in the protection domain that is included in claim with the present invention.
Claims (27)
1. method for sludge treatment, this method comprises the steps:
(1) in mud, adds unslaked lime, fully stir, thereby make the water generation chemical reaction in unslaked lime and the mud form sludge hydrated lime;
(2) in the sludge hydrated lime that step (1) produces, add cement and water, fully stir, form on the mud coagulation;
(3) foamed system by foaming machine fully foams whipping agent with mechanical system, and with the sludge concrete uniform mixing that foam and step (2) produce, forms sludge foaming lightweight concrete.
2. method for sludge treatment according to claim 1 is characterized in that the described mud of step (1) is the thickened sludge through dehydration, drying treatment.
3. method for sludge treatment according to claim 1 is characterized in that the described mud of step (1) is the primary sludge of not process dehydration, drying treatment.
4. method for sludge treatment according to claim 1 is characterized in that the part by weight 1:1 to 6:1 of mud and unslaked lime in the step (1).
5. method for sludge treatment according to claim 1 is characterized in that the unslaked lime in the step (1) is calcium lime powder.
6. method for sludge treatment according to claim 1 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 30%--60%, cement 15%--40%, water 10%--40%.
7. method for sludge treatment according to claim 6 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 40%--50%, cement 20%--35%, water 20%--30%.
8. method for sludge treatment according to claim 7 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 50%, cement 25%, water 25%.
9. method for sludge treatment according to claim 1 when it is characterized in that implementation step (2), also adds flyash in adding cement and the water in sludge hydrated lime.
10. method for sludge treatment according to claim 9 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 30%--60%, cement 10%--30%, flyash 5%--20%, water 10%--30%.
11. method for sludge treatment according to claim 10 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 40%--50%, cement 15%--25%, flyash 10%--15%, water 15%--25%.
12. method for sludge treatment according to claim 11 is characterized in that the weight percent of each component in the step (2) is: sludge hydrated lime 50%, cement 20%, flyash i0%, water 20%.
13. according to claim 1 or 9 described method for sludge treatment, it is characterized in that the described whipping agent of step (3) is RA rosin acid class whipping agent, metallic aluminium powder whipping agent, vegetable-protein whipping agent, animal protein foaming agent, sodium resinate class whipping agent, hydrolysis blood glue whipping agent or mahogany acid aluminium whipping agent, or wherein two or more mixtures.
14. according to claim 1 or 9 described method for sludge treatment, the consumption that it is characterized in that the described whipping agent of step (3) is the 1%--10% of the sludge concrete weight of step (2) generation.
The 2%--5% of the sludge concrete weight that 15. method for sludge treatment according to claim 14, the consumption that it is characterized in that the described whipping agent of step (3) are steps (2) to be produced.
3% of the sludge concrete weight that 16. method for sludge treatment according to claim 15, the consumption that it is characterized in that the described whipping agent of step (3) are steps (2) to be produced.
17., it is characterized in that further comprising the steps: to make of the jet orifice ejection of the sludge foaming lightweight concrete of step (3) formation afterwards from foamed system in step (3) according to claim 1 or 9 described method for sludge treatment.
18. sludge foaming lightweight concrete, contain cement, water and whipping agent, portion is formed with a large amount of foam holes within it, it is characterized in that also containing dewatered sludge and white lime, adopt following method preparation: in mud, add unslaked lime, fully stir, make the water generation chemical reaction in unslaked lime and the mud, form sludge hydrated lime; In sludge hydrated lime, add cement and water, fully stir, form sludge concrete; Foamed system by foaming machine fully foams whipping agent with mechanical system then, and with foam and sludge concrete uniform mixing, promptly obtains sludge foaming lightweight concrete.
19. sludge foaming lightweight concrete according to claim 18 is characterized in that also containing flyash; In preparation process, in sludge hydrated lime, add in cement and the water, add flyash again.
20. claim 18 or 19 described sludge foaming lightweight concretes are as the application of building packing material.
21. claim 18 or 19 described sludge foaming lightweight concretes are as the application of building thermal insulation material.
22. claim 18 or 19 described sludge foaming lightweight concretes are as the application of body of wall construction material.
23. claim 18 or 19 described sludge foaming lightweight concretes are as the application of sound-proof material.
24. claim 18 or 19 described sludge foaming lightweight concretes are as the application of tunnel, mine packing material.
25. claim 18 or the 19 described sludge foaming lightweight concretes application in making man-made tourist site.
26. claim 18 or 19 described sludge foaming lightweight concretes are as the speedily carry out rescue work application of material of road.
27. claim 18 or 19 described sludge foaming lightweight concretes are as the application of the basic packing material of pipe.
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|---|---|---|---|
| CN2008101717251A CN101381191B (en) | 2008-10-24 | 2008-10-24 | Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use |
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| CN2008101717251A CN101381191B (en) | 2008-10-24 | 2008-10-24 | Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use |
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| CN101381191A true CN101381191A (en) | 2009-03-11 |
| CN101381191B CN101381191B (en) | 2010-06-09 |
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Cited By (12)
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| CN101830625A (en) * | 2010-04-22 | 2010-09-15 | 北京四方如钢混凝土制品有限公司 | Sludge treatment method and light weight sludge concrete produced by same |
| CN102234170A (en) * | 2010-04-29 | 2011-11-09 | 安徽合协生态环境科技有限公司 | Method and device for rapidly reducing moisture content of sludge |
| CN102515827A (en) * | 2011-12-08 | 2012-06-27 | 天津市裕川环境科技有限公司 | Method for preparing light foam concrete by using compound protein foaming agent |
| CN104310896A (en) * | 2014-10-21 | 2015-01-28 | 赵永生 | Aerated concrete block and preparation method thereof |
| CN104743999A (en) * | 2015-03-09 | 2015-07-01 | 沈阳化工大学 | Dual-component mining foam paste filling material and preparation method thereof |
| CN105330229A (en) * | 2015-10-23 | 2016-02-17 | 潍坊德霖建材科技有限公司 | Low-density self-thermal insulation building block produced from high-calcium waste residue |
| CN105777189A (en) * | 2016-03-09 | 2016-07-20 | 天津市禹杰宏业混凝土有限公司 | Multifunctional lightweight sludge foamed concrete production method and product |
| CN106927862A (en) * | 2017-03-30 | 2017-07-07 | 合肥金同维低温科技有限公司 | A kind of method that sludge of sewage treatment plant prepares insulation material |
| CN110451874A (en) * | 2019-07-25 | 2019-11-15 | 广州纳达星建材科技有限公司 | A kind of cast-in-place light wallboard and preparation method thereof |
| CN110759669A (en) * | 2019-11-15 | 2020-02-07 | 中国石油化工股份有限公司 | Filler for treating discarded pipeline and harmless treatment method of discarded pipeline |
| CN112174592A (en) * | 2020-08-26 | 2021-01-05 | 北京鼎创科技环保集团有限公司 | Novel roadbed material containing sludge |
| CN113957759A (en) * | 2021-11-29 | 2022-01-21 | 大连海事大学 | Continuous treatment equipment and method for using high-water-content dredged sludge as roadbed |
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- 2008-10-24 CN CN2008101717251A patent/CN101381191B/en not_active Expired - Fee Related
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| CN101830625A (en) * | 2010-04-22 | 2010-09-15 | 北京四方如钢混凝土制品有限公司 | Sludge treatment method and light weight sludge concrete produced by same |
| CN102234170A (en) * | 2010-04-29 | 2011-11-09 | 安徽合协生态环境科技有限公司 | Method and device for rapidly reducing moisture content of sludge |
| CN102234170B (en) * | 2010-04-29 | 2012-08-22 | 安徽合协生态环境科技有限公司 | Method and device for rapidly reducing moisture content of sludge |
| CN102515827A (en) * | 2011-12-08 | 2012-06-27 | 天津市裕川环境科技有限公司 | Method for preparing light foam concrete by using compound protein foaming agent |
| CN102515827B (en) * | 2011-12-08 | 2013-09-11 | 天津市裕川环境科技有限公司 | Method for preparing light foam concrete by using compound protein foaming agent |
| CN104310896B (en) * | 2014-10-21 | 2016-05-11 | 赵永生 | A kind of air-entrained concrete building block and preparation method thereof |
| CN104310896A (en) * | 2014-10-21 | 2015-01-28 | 赵永生 | Aerated concrete block and preparation method thereof |
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| CN105330229A (en) * | 2015-10-23 | 2016-02-17 | 潍坊德霖建材科技有限公司 | Low-density self-thermal insulation building block produced from high-calcium waste residue |
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