CN101274825B - Composite additive for sludge material processing - Google Patents
Composite additive for sludge material processing Download PDFInfo
- Publication number
- CN101274825B CN101274825B CN2008100198799A CN200810019879A CN101274825B CN 101274825 B CN101274825 B CN 101274825B CN 2008100198799 A CN2008100198799 A CN 2008100198799A CN 200810019879 A CN200810019879 A CN 200810019879A CN 101274825 B CN101274825 B CN 101274825B
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- CN
- China
- Prior art keywords
- composite additive
- sludge
- engineering
- lime
- material processing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a composite additive for materializing sludge, which is characterized by that raw material components include lime, gypsum, pulverized fuel ashes, bentonite clay and an expansion agent, and a preparation technique thereof is that the raw materials are mixed and stirred evenly. The additive has the advantages that: water content of the sludge can be greatly reduced and quality of the sludge is changed by mixing and stirring the composite additive with the sludge; the waste sludge which occupies large land resources and pollutes environment can be regenerated into loose and good filling material, thus being directly applied in engineering construction. The loose and good filling material produced by the sludge being processed by the composite additive has strong engineering applicability and can be rolled according to the needs of the engineering in filling projects such as roads and dikes, etc, which is convenient for transporting. Parts of the raw materials of the invention are waste materials largely produced in the industry, the raw material has wide sources and the using of the composite additive not only meets the requirements of environment protection and but also conforms to the needs of sustainable development of civil engineering and hydrographic engineering.
Description
Technical field
What the present invention relates to is a kind of the mud that produces in hydro project, port engineering and the civil engineering work to be carried out the employed composite additive of material processing, and the embankment that the mud after the material processing can be used as engineerings such as road, dyke is with soil.Belong to the civil material technical field.
Background technology
Along with China's rapid economy development, construction projects such as port engineering, waterway engineering, hydro project increase sharply, in the desilting in various navigation channels, water delivery river course and the harbour is newly-built, in the extension project, a large amount of dredging silt that can produce usually.Since Yangtze Estuary Deepwater Channel Regulation Project in 1998, the dredging silt total amount was about 300,000,000 m
3According to " Jiangsu Province Office of the People's Government is about printing and distributing new five of rural area " (2006), only be at the river course, counties and townships, Tenth Five-Year Plan Period dredging silt 3.9 hundred million m of Jiangsu Province
3, and 10.1 hundred million m are the Eleventh Five-Year Plan period dredged in plan again
3Mud.
Dredging silt water content height, a glutinous grain content height, intensity are extremely low, the engineering properties extreme difference, be to be difficult to the directly a kind of special soil of utilization on the engineering, stack mode so generally adopt marine fixed point discharging or land, and these methods exist great environmental issue and wasting of resources problem, and people then become engineering earth by methods such as natural drying, thermal treatment and curing with sludge treatment.Because natural drying need be provided with the stockyard, takies a large amount of soils or fish pond, and is subject to the influence of weather, and the processing plant of heat treating method is a fixed, limited its processing power,, used wider relatively with the chemosetting method at present so these two kinds of treatment processs application are all very limited.But curing also has its shortcoming: the solidification technology of (1) mud needs special construction facility and operating technique, cost is higher, and the relative national conditions that fall behind of engineering construction characteristics that this is simple with China preparation of construction, construction technical requirement is lower and economic level do not conform to; (2) mud after the solidification treatment requires once shaped, so it is not suitable for the strange land transportation.These conditions have all limited sludge solidification treatment technology applying in China.
Summary of the invention:
Purpose of the present invention is intended to the problem that exists in the existing process for treating sludge, develops a kind of composite additive in order to handle mud.This composite additive utilizes a diminishing character and a voltinism matter of its constitutive material; by selecting best proportioning; given play to the composite effect of additive; with sludge treatment is loose; and the good matter fill material of suitable strange land transportation, thus can directly apply to engineering construction, can turn waste into wealth on the one hand; protect environment, enlarged the engineering adaptability of the mud after handling on the other hand.
Technical solution of the present invention: it is characterized in that material component comprises lime, gypsum, flyash, wilkinite, swelling agent, the shared weight percent of each feed composition is:
Lime: 5～90.5%
Gypsum: 1～20%
Flyash: 4.6～40%
Wilkinite: 3.5～34.7%
Swelling agent: 0.4～25.3%
Its preparation technology: prepare the mixture of lime, gypsum, flyash, wilkinite and swelling agent according to the above ratio, mix and form.
Described lime is unslaked lime; Described wilkinite is for receiving base bentonite, calcium-base bentonite, hydrogen base bentonite or organobentonite; Described swelling agent is UEA, AEA, CEA, AUA, HEA or ZY.
This composite additive for sludge material processing can directly be processed into mud loose good matter fill material.
On the basis of analyzing the dredging silt characteristics, respectively from the component of the angle Selection composite additive that reduces water content, soil particle granuleization, give full play to the effects of action of each component, realized loose, the materialization of mud.Can be widely used in the material processing of mud.
Beneficial effect of the present invention: this composite additive superior performance, low price, its advantage mainly contains: (1) can be processed into waste silt loose good matter fill material, thereby turn waste into wealth by mixing this composite additive, the protection environment satisfies the requirement of Sustainable development; (2) because the mud of flow state becomes loose good matter fill material after handling through this composite additive, conveniently carry out the strange land transportation on the one hand, in the embankment engineering, can roll on the other hand, therefore, enlarge the engineering adaptability of handling back mud according to requirement of engineering.
Embodiment
Embodiment 1
Mud is selected the geographic dredging silt in lake, Baima, Huai, Jiangsu Province for use, and its performance index see Table 1.
The physical property index of table 1 mud
| The ground title | Water content W % | Severe γ kN/m 3 | Liquid limit W L ％ | Plastic limit W P ％ | Plasticity index I P | Proportion Gs | Organic content % |
| Mud matter clay | 151.2 | 14.8 | 92.7 | 36.6 | 56.1 | 2.65 | 2.0 |
Table 2 composite additive component concentration
| Component | Lime | Gypsum | Flyash | Calcium-base bentonite | Swelling agent UEA |
| Quality is formed (%) | 35.5 | 8.2 | 27 | 20.8 | ?8.5 |
Press the proportioning of table 2, add the 95kg composite additive in every cubic metre of mud, the mud water content that records after 1 day after composite additive is handled is 62.3%, and plasticity index is 43.1.
Embodiment 2
Table 3 composite additive component concentration
| Component | Lime | Gypsum | Flyash | Sodium bentonite | Swelling agent HEA |
| Quality is formed (%) | 18.3 | 8.8 | 36.6 | 29.5 | ?6.8 |
Press the proportioning of table 3, add the 85kg composite additive in every cubic metre of mud, the mud water content that records the composite additive processing after 1 day is 65.6%, and plasticity index is 40.7.
Embodiment 3
Table 4 composite additive component concentration
| Component | Lime | Gypsum | Flyash | Sodium bentonite | Swelling agent CEA |
| Quality is formed (%) | 50.7 | 9.9 | 17.1 | 7.8 | ?14.5 |
Press the proportioning of table 4, add the 100kg composite additive in every cubic metre of mud, the mud water content that records the composite additive processing after 1 day is 70.7%, and plasticity index is 35.4.
The preparation technology of embodiment 1-3: mix.
Claims (6)
1. composite additive for sludge material processing is characterized in that material component is made up of lime, gypsum, flyash, wilkinite, swelling agent, and the shared weight percent of each feed composition is:
Lime: 5～90.5%,
Gypsum: 1～20%,
Flyash: 4.6～40%,
Wilkinite: 3.5～34.7%,
Swelling agent: 0.4～25.3%;
Its preparation technology: mix.
2. composite additive for sludge material processing according to claim 1 is characterized in that described lime is unslaked lime; Described wilkinite is sodium bentonite, calcium-base bentonite, hydrogen base bentonite or organobentonite; Described swelling agent is UEA, AEA, CEA, AUA, HEA or ZY.
3. composite additive for sludge material processing according to claim 1 is characterized in that the shared weight percent of described each feed composition is:
Lime: 35.5%,
Gypsum: 8.2%,
Flyash: 27%,
Wilkinite: 20.8%,
Swelling agent: 8.5%; Its preparation technology: mix.
4. composite additive for sludge material processing according to claim 1 is characterized in that
The shared weight percent of described each feed composition is:
Lime: 50.7%,
Gypsum: 9.9%,
Flyash: 17.1%,
Wilkinite: 7.8%,
Swelling agent: 14.5%; Its preparation technology: mix.
5. composite additive for sludge material processing according to claim 1 is characterized in that the shared weight percent of described each feed composition is:
Lime: 18.3%,
Gypsum: 8.8%,
Flyash: 36.6%,
Wilkinite: 29.5%,
Swelling agent: 6.8%; Its preparation technology: mix.
6. composite additive for sludge material processing according to claim 1 is characterized in that described mud directly is processed into the good matter fill material of loose condition (of surface).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100198799A CN101274825B (en) | 2008-03-20 | 2008-03-20 | Composite additive for sludge material processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100198799A CN101274825B (en) | 2008-03-20 | 2008-03-20 | Composite additive for sludge material processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101274825A CN101274825A (en) | 2008-10-01 |
| CN101274825B true CN101274825B (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100198799A Expired - Fee Related CN101274825B (en) | 2008-03-20 | 2008-03-20 | Composite additive for sludge material processing |
Country Status (1)
| Country | Link |
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| CN (1) | CN101274825B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583952A (en) * | 2012-03-14 | 2012-07-18 | 天津市市政工程设计研究院 | Sludge solidifying agent |
| CN105565420A (en) * | 2015-11-27 | 2016-05-11 | 杭州萧宏环保科技股份有限公司 | Chemical for treating floating mud of river and application method of chemical |
| CN106718275B (en) * | 2016-12-08 | 2020-05-05 | 河海大学 | Porous ecological concrete plant-growing base material and preparation method and application thereof |
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2008
- 2008-03-20 CN CN2008100198799A patent/CN101274825B/en not_active Expired - Fee Related
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| CN101274825A (en) | 2008-10-01 |
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Granted publication date: 20110420 Termination date: 20130320 |