CN106242469A - A kind of preparation method of river and lake silt solidification and stabilization medicament - Google Patents
A kind of preparation method of river and lake silt solidification and stabilization medicament Download PDFInfo
- Publication number
- CN106242469A CN106242469A CN201610621513.3A CN201610621513A CN106242469A CN 106242469 A CN106242469 A CN 106242469A CN 201610621513 A CN201610621513 A CN 201610621513A CN 106242469 A CN106242469 A CN 106242469A
- Authority
- CN
- China
- Prior art keywords
- river
- lake silt
- preparation
- solidification
- medicament
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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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/143—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
Abstract
The present invention relates to the preparation method of a kind of river and lake silt solidification and stabilization medicament, belong to field of environment engineering technology.This preparation method includes: prepare raw materials for production；Raw materials for production include: ardealite, potassium dihydrogen phosphate and mistake burned magnesium oxide；Raw materials for production are dried levigate；Levigate rear ardealite, potassium dihydrogen phosphate will be dried and cross burned magnesium oxide mix homogeneously acquisition river and lake silt solidification and stabilization medicament；In mixed process, ardealite and potassium dihydrogen phosphate and the mass ratio crossing burned magnesium oxide are 1:1:2.The medicament cost of disposal that this preparation method produces is low, sludge solidification intensity high, pollutant stablizing effect is good, environmental risk is low.
Description
Technical field
The present invention relates to field of environment engineering technology, particularly to the preparation side of a kind of river and lake silt solidification and stabilization medicament
Method.
Background technology
Along with developing rapidly of Re-search on Urbanization, lake, a large amount of black smelly river is badly in need of administering.What lake, black smelly river was administered is at all
Mud is administered.River and lake silt has High water cut, high organic content, hyposmosis, the scale of construction is big, contain pollutant and rubbish in various degree
The features such as rubbish foreign material, cause processing in engineering and dispose difficulty greatly, and be susceptible to secondary pollution.Therefore, how canonical system
Processing disposal is the crucial problem faced at present.
It is the key realizing river and lake silt recycling that solidification and stabilization processes, and the selection of its solidification and stabilization medicament is
Core.And river and lake silt contains organic matter, heavy metal, the moisture of high level and in acidity, these factors retardance firming agent
Hydration reaction；Conventional solidified stabilization agent (such as: cement, Calx, Gypsum Fibrosum and flyash etc.) is caused to be difficult to river and lake silt is entered
The effective solidification and stabilization of row processes；Mud after process still suffers from that mechanical characteristic is weak, Leaching of Heavy Metals exceeds standard, it is difficult to realize becoming silted up
The recycling of mud and there is the risk of secondary pollution.
Therefore, for river and lake silt characteristic, developing new river and lake silt solidification and stabilization medicament is problem demanding prompt solution.
Summary of the invention
The preparation method of a kind of river and lake silt solidification and stabilization medicament that the application provides, solves or part solves existing
There are the employing cement class firming agent disposal weak effect to river and lake silt, the technical problem that firming body intensity is low in technology, it is achieved that
The technique effect that cost of disposal is low, sludge solidification intensity high, pollutant stablizing effect is good, environmental risk is low.
This application provides the preparation method of a kind of river and lake silt solidification and stabilization medicament, comprise the following steps:
Prepare raw materials for production；Described raw materials for production include: ardealite, potassium dihydrogen phosphate and mistake burned magnesium oxide；
Described raw materials for production are dried levigate；
Levigate rear described ardealite, potassium dihydrogen phosphate will be dried and cross the burned magnesium oxide mix homogeneously described river and lake silt of acquisition
Solidification and stabilization medicament；In mixed process, described ardealite and described potassium dihydrogen phosphate and the described mass ratio crossing burned magnesium oxide
For 1:1:2.
As preferably, described burned magnesium oxide of crossing is obtained by giobertite calcining.
As preferably, the described burnt temperature crossing burned magnesium oxide is 1100 degrees Celsius～1300 degrees Celsius.
As preferably, described ardealite is the solidification waste residue produced in production process of phosphoric acid；
Described ardealite be mainly composed of calcium sulfate.
As preferably, described preparation method also includes:
Described raw materials for production after levigate are crossed 200 mesh sieves.
As preferably, when described river and lake silt solidification and stabilization medicament uses, control described river and lake silt solidification and stabilization
The addition of medicament is the 3%～12% of described river and lake silt quality.
The preparation method of the river and lake silt solidification and stabilization medicament that the present invention provides, can prepare at effective solidification and stabilization
Putting the medicament of river and lake silt, use ardealite as one of medicine component, the solidification not only having effectively facilitated river and lake silt is stable
Change process, also achieves the recycling of garbage, has reached the purpose of waste recycling；Medicament is ground by drying before using
Thin 200 mesh sieves of crossing process, and improve the uniformity of medicament, make to contact between medicament with mud more abundant, improve medicament to river
The solidification and stabilization disposal efficiency of lake silt；When potassium dihydrogen phosphate in medicine component dissolves can release hydrogen ions, at phosphorus stone
While cream and excessively burned magnesium oxide dissolving, it is provided that promote the reaction environment of this medicament acceleration of hydration；Three kinds of compositions in medicament
All be easy to obtain, price low, when processing river and lake silt, addition is little, it is effective to dispose, it is achieved that economic high to river and lake silt
Effect is disposed；Containing a large amount of phosphate anions in medicament, it is possible to the heavy metal ion preferably contained in poised river lake silt, dispose back river
The environmental risk of lake silt significantly reduces；The processing technology of this preparation method is easy, and production cost is low, and the medicament produced uses
Convenient, the disposal for river and lake silt is effective, applied widely, and environmental risk is low.
Accompanying drawing explanation
The flow chart of the preparation method of the river and lake silt solidification and stabilization medicament that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is explained in further detail:
The embodiment of the present application provides the preparation method of a kind of river and lake silt solidification and stabilization medicament, solves or part solves
The employing cement class firming agent disposal weak effect to river and lake silt in prior art of having determined, the technical problem that firming body intensity is low,
By raw materials for production and the proportioning of appropriate design medicament, it is achieved that the medicament of preparation can be good in the sour environment of river and lake silt
Well quick aquation, and place postpones the technique effect that firming body intensity is high.
See accompanying drawing 1, this application provides the preparation method of a kind of river and lake silt solidification and stabilization medicament, including following step
Rapid:
S1: prepare raw materials for production；Raw materials for production include: ardealite, potassium dihydrogen phosphate and mistake burned magnesium oxide.With cement phase
Ratio, the yield crossing burned magnesium oxide is high, price is low, crosses the greenhouse gases produced in burned magnesium oxide production process raw well below cement
The greenhouse gases amount produced during product, therefore cross burned magnesium oxide environment friendly far above cement.
S2: raw materials for production are dried levigate, levigate after raw materials for production cross 200 mesh sieves, so ensure relatively low thin of medicament
Degree and bigger specific surface area, increase each component of medicament and the mixed rate of dissolution of mud and reaction rate, strengthens anti-
Answer effect.
S3: levigate rear ardealite, potassium dihydrogen phosphate will be dried and cross the acquisition river and lake silt solidification of burned magnesium oxide mix homogeneously
Stabilization agent；In mixed process, ardealite and potassium dihydrogen phosphate and the mass ratio crossing burned magnesium oxide are 1:1:2.
Wherein, the burned magnesium oxide of crossing in raw materials for production is obtained by giobertite calcining, crosses the burnt temperature of burned magnesium oxide
Being 1100 degrees Celsius～1300 degrees Celsius, using this temperature range is so that magnesium oxide exists in order to avoid low sintering high activity
Hardening in wet air, preventing activity, too low in weak acid environment, hydration rate is low causes later stage high-expansion to sludge solidification
The damage that body brings.
Ardealite be in production process of phosphoric acid produce solidification waste residue, ardealite be mainly composed of calcium sulfate (CaSO4
2H2O), ardealite is caused to be made during storing up because of the most extra large in its composition containing impurity such as fluoride, free phosphoric acid, phosphate
Becoming environment dirty, these type of harmful components are after the drip washing such as rainwater are washed away, and pollutant transfer in soil and groundwater, to environment
Bring threat.This medicament can effectively utilize the phosphate anion in ardealite, and can form the hydrated product phosphorus of high intensity
Acid potassium magnesium, phosphate anion can effectively be stablized the heavy metal in mud, reduce in ardealite and river and lake silt simultaneously and pollute
The leaching risk of thing, therefore, using ardealite as the raw material of medicament, it is achieved that the recycling of garbage, reaches with useless system
Useless effect.
Further, when river and lake silt solidification and stabilization medicament uses, control adding of river and lake silt solidification and stabilization medicament
Dosage is the 3%～12% of river and lake silt quality；As a kind of preferred embodiment, the addition of medicament is river and lake silt quality
5%～10%.The medicament that this method prepares is disposed effective for the solidification and stabilization of river and lake silt, and relatively low addition is just
Higher solidification intensity can be obtained, good in economic efficiency.
The preparation method of the river and lake silt solidification and stabilization medicament that the present invention provides, can prepare at effective solidification and stabilization
Put the solidification and stabilization medicament of river and lake silt, use ardealite as one of medicine component, not only effectively facilitated river and lake silt
Solidification and stabilization process, also achieve the recycling of garbage, reached the purpose of waste recycling；Before medicament uses
Process by drying levigate mistake 200 mesh sieve, improve the uniformity of medicament, make to contact between medicament with mud more abundant, improve
The medicament solidification and stabilization disposal efficiency to river and lake silt；Potassium dihydrogen phosphate in medicine component can discharge when dissolving hydrogen from
Son, while ardealite and mistake burned magnesium oxide dissolve, it is provided that promote the reaction environment of this medicament acceleration of hydration；In medicament
Three kinds of compositions are all easy to obtain, price is low, and when processing river and lake silt, addition is little, it is effective to dispose, it is achieved that to river and lake silt
Economical and efficient dispose；Containing a large amount of phosphate anions in medicament, it is possible to the heavy metal ion preferably contained in poised river lake silt,
After disposal, the environmental risk of river and lake silt significantly reduces；The processing technology of this preparation method is easy, and production cost is low, produces
Medicament is easy to use, and the disposal for river and lake silt is effective, applied widely, and environmental risk is low.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not limited to this
Bright, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the present invention
Protection domain within.
Claims (6)
1. the preparation method of a river and lake silt solidification and stabilization medicament, it is characterised in that described preparation method includes following step
Rapid:
Prepare raw materials for production；Described raw materials for production include: ardealite, potassium dihydrogen phosphate and mistake burned magnesium oxide；
Described raw materials for production are dried levigate；
Levigate rear described ardealite, potassium dihydrogen phosphate will be dried and cross burned magnesium oxide mix homogeneously acquisition described river and lake silt solidification
Stabilization agent；In mixed process, described ardealite is 1 with described potassium dihydrogen phosphate and the described mass ratio crossing burned magnesium oxide:
1:2.
2. the preparation method of river and lake silt solidification and stabilization medicament as claimed in claim 1, it is characterised in that
Described burned magnesium oxide of crossing is obtained by giobertite calcining.
3. the preparation method of river and lake silt solidification and stabilization medicament as claimed in claim 2, it is characterised in that
The described burnt temperature crossing burned magnesium oxide is 1100 degrees Celsius～1300 degrees Celsius.
4. the preparation method of river and lake silt solidification and stabilization medicament as claimed in claim 1, it is characterised in that
Described ardealite is the solidification waste residue produced in production process of phosphoric acid；
Described ardealite be mainly composed of calcium sulfate.
5. the preparation method of river and lake silt solidification and stabilization medicament as claimed in claim 1, it is characterised in that described preparation side
Method also includes:
Described raw materials for production after levigate are crossed 200 mesh sieves.
6. the preparation method of river and lake silt solidification and stabilization medicament as claimed in claim 1, it is characterised in that
When described river and lake silt solidification and stabilization medicament uses, the addition controlling described river and lake silt solidification and stabilization medicament is
The 3%～12% of described river and lake silt quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621513.3A CN106242469B (en) | 2016-08-02 | 2016-08-02 | A kind of preparation method of river and lake silt solidification and stabilization medicament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621513.3A CN106242469B (en) | 2016-08-02 | 2016-08-02 | A kind of preparation method of river and lake silt solidification and stabilization medicament |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106242469A true CN106242469A (en) | 2016-12-21 |
| CN106242469B CN106242469B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610621513.3A Active CN106242469B (en) | 2016-08-02 | 2016-08-02 | A kind of preparation method of river and lake silt solidification and stabilization medicament |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109593014A (en) * | 2018-10-23 | 2019-04-09 | 湖南杂交水稻研究中心 | A kind of alkaline land modifying agent and saline and alkali land improvement method based on lake silt |
Citations (4)
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|---|---|---|---|---|
| CN102390943A (en) * | 2011-07-27 | 2012-03-28 | 中国科学院青海盐湖研究所 | Magnesium phosphate cement prepared by using magnesium oxide byproduct in process of extracting lithium carbonate from salt lake |
| CN103289703A (en) * | 2013-07-05 | 2013-09-11 | 浙江工业大学 | Early-strength soil solidifying agent and manufacturing method and application for same |
| CN105645914A (en) * | 2016-02-20 | 2016-06-08 | 北京工业大学 | MPC (magnesium phosphate cement) doped with PCMs (phase-change materials) |
| CN105731991A (en) * | 2016-02-20 | 2016-07-06 | 北京工业大学 | Modified magnesium phosphate cement and preparing method thereof |
-
2016
- 2016-08-02 CN CN201610621513.3A patent/CN106242469B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390943A (en) * | 2011-07-27 | 2012-03-28 | 中国科学院青海盐湖研究所 | Magnesium phosphate cement prepared by using magnesium oxide byproduct in process of extracting lithium carbonate from salt lake |
| CN103289703A (en) * | 2013-07-05 | 2013-09-11 | 浙江工业大学 | Early-strength soil solidifying agent and manufacturing method and application for same |
| CN105645914A (en) * | 2016-02-20 | 2016-06-08 | 北京工业大学 | MPC (magnesium phosphate cement) doped with PCMs (phase-change materials) |
| CN105731991A (en) * | 2016-02-20 | 2016-07-06 | 北京工业大学 | Modified magnesium phosphate cement and preparing method thereof |
Non-Patent Citations (3)
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| 张亭亭等: ""磷酸镁水泥固化铅污染土的应力-应变特性研究"", 《岩土力学》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109593014A (en) * | 2018-10-23 | 2019-04-09 | 湖南杂交水稻研究中心 | A kind of alkaline land modifying agent and saline and alkali land improvement method based on lake silt |
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| Publication number | Publication date |
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| CN106242469B (en) | 2018-08-31 |
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