CN112174625A - Environment-friendly dredged sludge modifier and preparation method thereof - Google Patents
Environment-friendly dredged sludge modifier and preparation method thereof Download PDFInfo
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- 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
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- 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
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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- 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
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Crystallography & Structural Chemistry (AREA)
- Soil Sciences (AREA)
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- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to the field of sludge treatment, and particularly relates to a green environment-friendly modifying agent for dredged sludge and a preparation method thereof. The modifier mainly comprises attapulgite, calcium superphosphate, biochemical fulvic acid, semi-hydrated gypsum, slag micro powder, cement and an excitant. The sludge modifier prepared by the invention has the advantages of easily available raw materials, simple preparation, convenient transportation, simple construction, environmental protection, no need of mechanical dehydration of the dredged sludge in the early stage, no use of special fields and dehydration machinery, and raw materials containing industrial solid wastes such as slag micro powder, realizes resource recycling, and accords with the ecological environment protection concept of treating wastes with processes of wastes against one another. The improved soil is alkalescent, and the soil contains a certain amount of nutrients, so that ecological green improvement of the dredged sludge to green planting bases is realized, the supply requirements of the planting bases for slope engineering, roadbed engineering and municipal greening are met, great contribution is made to promotion of harmless solid waste and environmental greening, and good economic benefit, social benefit and environmental benefit are generated.
Description
Technical Field
The invention belongs to the field of sludge treatment, and particularly relates to a green and environment-friendly sludge modifier and a preparation method thereof.
Background
During the dredging of inland rivers and lakes in China and the construction of ports and waterways, a large amount of dredged sludge is produced every year. The sludge has the characteristics of high natural water content, high compressibility, low permeability, low strength and high porosity, has low bearing capacity, high sedimentation and poor stability during normal construction, and is difficult to be directly used as engineering materials without treatment. If the disposal is carried out by adopting a storage yard or open sea disposal mode, precious land resources are occupied, and adverse effects are caused on the surrounding living environment and marine ecology. On the other hand, with the advance of the construction layout of major scientific and technological infrastructures in China, large-scale construction of river-lake engineering, sea surrounding engineering, embankment engineering and road engineering causes serious shortage of high-quality engineering materials such as earthwork, and the contradiction between rapid construction demand and pollution is increasingly prominent, so that the rational disposal of dredging sludge and the resource utilization of the dredging sludge as the high-quality engineering materials become a challenge to be solved at present.
At present, the resource treatment method of the dredged sludge engineering commonly used at home and abroad mainly comprises a physical dehydration method, a high-temperature sintering method and a solidification treatment method. The physical dehydration method is to use special filtering, compressing and dehydrating equipment to force and extrude the water in the dredged sludge so as to play a role in reinforcing the soil body, and the principle of the physical dehydration method is similar to that of a drainage consolidation method. Because the cost of the filtering, compressing and dehydrating device is high and the processing capacity is limited, the method is only suitable for processing dredged sludge with high water content in small batches and is difficult to popularize in large area. The high-temperature sintering method is to obtain high-hardness sinter (ceramsite) through high-temperature treatment and then treat the sinter again to be used as a pavement material or prepare a light brick for use. The method has high requirements on the components of the dredged sludge and is time-consuming and labor-consuming. The solidification treatment method is characterized in that a chemical solidification material is doped, and the physical and chemical reactions between the chemical solidification material and the dredged silt particles are utilized to form a soil body framework structure and fill the pores of the soil body to play a role in reinforcing and strengthening. The mechanical strength of the solidified waste dredged sludge is improved, so that the solidified waste dredged sludge can replace part of building materials.
Patent document CN103288391B discloses a pure inorganic sludge curing agent consisting of cement, palygorskite and sericite. The doping amount of the pure inorganic sludge curing agent is 10-20% of the mass of the sludge when the pure inorganic sludge curing agent is used. The prepared sludge curing agent can effectively improve the optimal water content of the sludge, and when the sludge reaches the same strength, less water needs to be removed from the sludge; the palygorskite and the sericite can exert stronger water absorption effect, in addition, the interaction of the layered silicate minerals and the characteristics of the clay minerals are exerted, so that the solidified sludge has higher scour resistance and freeze-thaw resistance, the solidified sludge can be used as road filler, and the road construction cost is reduced.
Patent document CN102295442B discloses a solidification material for ocean dredging and mud flat sludge, which comprises slag micropowder, fly ash, cement, calcium oxide, citric acid waste gypsum, lignin, an excitant and an active deodorant. The sludge solidifying material is added into the ocean dredging sludge and the mud flat sludge in a stirring way, so that the problems of solidification and engineering utilization of the ocean dredging sludge and the mud flat sludge are solved. Through the marine dredging and mud flat sludge solidifying material, industrial and mining enterprise waste materials such as waste gypsum, slag, wood chips and the like are fully utilized as a filler and an additive for solidifying marine sludge, the mechanical property, the building practicability and the environmental protection property of a marine sludge solidified product are ensured, and the reasonable utilization of natural sludge and industrial waste materials is realized.
However, the improvement of the dredged sludge is mainly focused on the aspect of strength solidification at present, only the improvement of mechanical properties is emphasized, a special field is needed for early-stage mechanical drainage before sludge solidification treatment, a completely compact structure is formed after solidification, soil is strongly alkaline, and the soil cannot be used as a green planting base and is not beneficial to the survival and growth of green planting.
Disclosure of Invention
The invention aims to provide a green and environment-friendly ecological modifying agent for sludge and a preparation method thereof. The sludge modifier provided by the invention has the advantages of easily available raw materials, easiness in preparation, convenience in transportation and easiness in construction, can quickly reduce the water content of the dredged sludge, improves the mechanical property to a certain extent, can control the pH value to be stabilized within a certain range, improves the soil characteristic, increases the content of organic matters, and provides a soil fertilizer so as to meet the growth requirement of green plants.
In order to achieve the purpose, the invention adopts the following technical scheme:
the green environment-friendly ecological modifying agent for the sludge comprises the following components in percentage by mass:
20-30% of attapulgite;
20-25% of calcium superphosphate;
10-15% of biochemical fulvic acid;
15-25% of semi-hydrated gypsum;
15-20% of slag micro powder;
2.5 to 5 percent of cement;
0.5 to 1.5 percent of excitant;
the sum of the total mass fractions is 100%.
Preferably, the calcium superphosphate is powdered calcium superphosphate, and is prepared by the following method: will P2O5Drying 14-20% of calcium superphosphate by using 100-250 ℃ airflow until the water content is less than 2%, and grinding the calcium superphosphate through a 150-200-mesh sieve; or grinding the commercially available granular calcium superphosphate and sieving the ground granules with a 150-200-mesh sieve.
Preferably, the biochemical fulvic acid is powdered plant source biochemical fulvic acid potassium or biochemical fulvic acid sodium.
Preferably, the slag micro powder is S95-grade granulated blast furnace slag micro powder, and the specific surface area of the slag micro powder is more than 300 m2The activity index of the catalyst per kg and 28d is more than 95 percent.
Preferably, the cement is ordinary portland cement with the mark of P.O. 42.5 and above.
Preferably, the activator is one of sodium sulfate and sodium carbonate.
The source of the dredged sludge can be rivers, lakes, seas and the like, and the natural water content of the dredged sludge is between 50% and 100%.
A preparation method of a green and environment-friendly ecological modifier for sludge comprises the following steps:
mixing attapulgite, calcium superphosphate, biochemical fulvic acid, semi-hydrated gypsum, slag micro powder, cement and an excitant, stirring, sending into a finished product warehouse, and packaging after the detection is qualified.
The application method of the green and environment-friendly ecological modifying agent for the sludge is that the modifying agent is directly added into a sludge soft base to be uniformly mixed and stirred when in use, and the preferable doping amount is 25-35% of the total mass of the sludge.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has the advantages of easily obtained raw materials, simple preparation, convenient transportation and simple construction, and can greatly save the economic cost.
(2) The invention does not need to carry out early mechanical dehydration on the dredged sludge, avoids using special fields and dehydration machinery, can be directly operated on the construction site, and saves the field and the mechanical cost.
(3) The raw materials of the invention contain industrial solid wastes such as slag micropowder and the like, thereby realizing resource recycling, changing waste into valuable, having good environmental benefit and wide application prospect.
(4) The improved soil is alkalescent, and the soil contains a certain amount of nutrients, so that ecological improvement from dredging sludge to green planting bases is realized, the supply requirements of the planting bases for slope engineering, roadbed engineering and municipal greening are met, great contribution is made to promotion of harmless solid waste and environmental greening, and good economic and social benefits are generated.
Drawings
FIG. 1 is a process scheme of the present invention.
Detailed Description
The technical solutions of the patents will be described in further detail with reference to specific embodiments.
Example 1
An environment-friendly modifying agent for sludge, which comprises the following components in percentage by mass: 25% of attapulgite, 20% of calcium superphosphate, 10% of biochemical fulvic acid, 20% of semi-hydrated gypsum, 20% of slag micro powder, 4% of cement and 1% of excitant. Wherein the biochemical fulvic acid is powdery plant source biochemical fulvic acid potassium; the fineness of the slag micro powder is 400m2Per kg, 28d activity index 96.4%; the grade of the cement is P.O. 42.5; the excitant is anhydrous sodium sulfate.
According to the preparation method of the modifier provided by the invention, the component materials with corresponding mass are weighed, mixed and stirred, sent into a finished product warehouse, and packaged after being detected to be qualified.
The application method of the sludge green environment-friendly modifier comprises the following steps: the environment-friendly sludge modifier provided by the embodiment is stirred with the stacked dredged sludge until the environment-friendly sludge modifier and the stacked dredged sludge are uniformly mixed and then stand still in a natural state.
The dredged sludge applied in the embodiment has a natural water content of 93.5% and the amount of the modifier added is 30% of the total mass of the dredged sludge.
Example 2
An environment-friendly modifying agent for sludge comprises the following components in percentage by mass: 20% of attapulgite, 20% of calcium superphosphate, 15% of biochemical fulvic acid, 20% of semi-hydrated gypsum, 20% of slag micro powder, 4% of cement and 1% of excitant. Wherein the biochemical fulvic acid is powdery plant source biochemical fulvic acid potassium; the fineness of the slag micro powder is 400m2Per kg, 28d activity index 96.4%; the grade of the cement is P.O. 42.5; the excitant is anhydrous sodium sulfate.
According to the preparation method of the modifier provided by the invention, the component materials with corresponding mass are weighed, mixed and stirred, sent into a finished product warehouse, and packaged after being detected to be qualified.
The green environment-friendly modifier and the stacked dredged sludge are stirred to be uniformly mixed and then are kept stand in a natural state.
The dredged sludge applied in the embodiment has the natural water content of 86.3 percent and the doping amount of the modifier is 30 percent of the total mass of the dredged sludge.
Example 3
An environment-friendly modifying agent for sludge comprises the following components in percentage by mass: 23% of attapulgite, 21% of calcium superphosphate and biochemistry13% of fulvic acid, 18% of semi-hydrated gypsum, 20% of slag micro powder, 4.5% of cement and 0.5% of excitant. Wherein the biochemical fulvic acid is powdered plant source biochemical fulvic acid sodium; the fineness of the slag micro powder is 400m2Per kg, 28d activity index 96.4%; the grade of the cement is P.O. 42.5; the excitant is anhydrous sodium sulfate.
According to the preparation method of the modifier provided by the invention, the component materials with corresponding mass are weighed, mixed and stirred, sent into a finished product warehouse, and packaged after being detected to be qualified.
The application method of the sludge green environment-friendly modifier comprises the following steps: the environment-friendly sludge modifier provided by the embodiment is stirred with the stacked dredged sludge until the environment-friendly sludge modifier and the stacked dredged sludge are uniformly mixed and then stand still in a natural state.
The natural water content of the dredged sludge applied in the embodiment is 98.3%, and the doping amount of the modifying agent is 35% of the total mass of the dredged sludge.
Example 4
A comparative formula of a green environment-friendly modifying agent for sludge comprises the following components in percentage by mass: 25% of calcium superphosphate, 15% of biochemical fulvic acid, 25% of semi-hydrated gypsum, 20% of slag micro powder, 14.5% of cement and 0.5% of excitant. Wherein the biochemical fulvic acid is powdery plant source biochemical fulvic acid potassium; the fineness of the slag micro powder is 400m2Per kg, 28d activity index 96.4%; the grade of the cement is P.O. 42.5; the excitant is anhydrous sodium sulfate.
According to the preparation method of the modifier in the comparative formula, the component materials with corresponding mass are weighed, mixed and stirred, sent into a finished product warehouse, and packaged after being detected to be qualified.
The application method of the comparative formula of the environment-friendly sludge modifier comprises the following steps: the comparative formula of the environment-friendly sludge modifier provided by the embodiment and the stacked dredged sludge are stirred to be uniformly mixed and then are allowed to stand in a natural state.
The natural water content of the dredged sludge and the incorporation of the comparative formulation of the conditioner used in this example were the same as in example 1.
Example 5
Green environment-friendly modifying agent for sludgeThe comparative formula comprises the following components in percentage by mass: 35% of attapulgite, 30% of semi-hydrated gypsum, 30% of slag micro-powder, 4.5% of cement and 0.5% of excitant. Wherein the fineness of the slag micro powder is 400m2Per kg, 28d activity index 96.4%; the grade of the cement is P.O. 42.5; the excitant is anhydrous sodium sulfate.
According to the preparation method of the modifier in the comparative formula, the component materials with corresponding mass are weighed, mixed and stirred, sent into a finished product warehouse, and packaged after being detected to be qualified.
The application method of the comparative formula of the environment-friendly sludge modifier comprises the following steps: the comparative formula of the environment-friendly sludge modifier provided by the embodiment and the stacked dredged sludge are stirred to be uniformly mixed and then are allowed to stand in a natural state.
The natural water content of the dredged sludge and the incorporation of the comparative formulation of the conditioner used in this example were the same as in example 1.
TABLE 1 unconfined compressive strength data sheet
TABLE 2 moisture content data sheet
TABLE 3 pH data Table
Table 4 organic matter content data table
As can be seen from tables 1 to 4, when the environment-friendly sludge modifier disclosed by the invention is used for treating dredged sludge with the water content of 80-100%, the water content can be quickly reduced within the age of 7d, the unconfined compressive strength is improved to reach the strength of 0.2-0.3 MPa, the pH value can be controlled within the range of 9.80-9.90, the organic matter content is increased, and the pH value and the organic matter nutrient of the improved soil are suitable for the requirements of planting green plants.
From the comparative formula in the embodiment 4, it can be known that under the condition that the formula lacks attapulgite, a large amount of water in the dredged sludge cannot be quickly adsorbed and drained, so that the water content is high in the post-treatment; from the comparative formulation in example 5, it is known that in the absence of superphosphate and fulvic acid in the formulation, the pH of the composite improved soil rapidly rises within 7 days due to the generation of a large amount of alkaline ions in the composite improved soil by the action of a cementing material such as cement and an air-hardening material such as gypsum, resulting in the overall dredged composite soil being alkaline soil and having a small organic matter content.
The working principle of the invention is as follows: the invention takes the attapulgite, the slag micro powder, the calcium superphosphate, the biochemical fulvic acid and the like as main raw materials, and the attapulgite can quickly absorb a large amount of free water in the dredged sludge, thereby greatly reducing the water content of the sludge; the slag micro powder is used for harmless recycling of solid waste resources, the production cost is reduced, waste is changed into valuable, the problem of solid waste treatment is solved, the problem of raw materials of a curing agent is solved, the slag micro powder and cement can generate stable crystalline minerals under the action of an activator, and the overall strength of the improved soil is improved; the pH value of the improved soil can be adjusted by using the calcium superphosphate and the biochemical fulvic acid, partial nutrients required by planting green plants can be provided for the soil while the pH value is adjusted, and the ecological improvement of the dredged sludge to green planting bases is realized.
The semi-hydrated gypsum is an air-hardening cementing material, generates dihydrate gypsum under the action of mixing with water, and is solidified and hardened in a drier environment, so that the overall strength of the improved soil is improved. Meanwhile, calcium ions in the gypsum can exchange sodium ions on the surface of the soil colloid, so that the pH value of the soil is reduced to a certain extent. The gypsum also has a microporous structure, has high porosity after hardening, can absorb moisture in the sludge, is beneficial to the transportation of nutrient substances, is convenient for plant roots to absorb required nutrient components, and provides conditions for the growth of plants.
The cement is common construction material in engineering, the cement is ordinary portland cement, and the cement is hydrated to generate crystalline minerals such as hydrated calcium silicate, calcium hydroxide, hydrated calcium aluminosilicate, ettringite and the like after meeting water, has higher hardness after being coagulated and hardened, and can improve the compressive strength of the whole soil.
The activator is sodium sulfate or sodium carbonate, and has the function of catalyzing the hydration of cement, slag powder and the like, so that the hydration can be rapidly carried out to improve the early strength.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention should not be limited by the disclosure of the preferred embodiments. Therefore, it is intended that all equivalents and modifications which do not depart from the spirit of the invention disclosed herein are deemed to be within the scope of the invention.
Claims (8)
1. The environment-friendly dredged sludge modifier is characterized by comprising the following components in parts by weight: the dredged sludge modifier comprises the following components in percentage by mass:
20-30% of attapulgite;
20-25% of calcium superphosphate;
10-15% of biochemical fulvic acid;
15-25% of semi-hydrated gypsum;
15-20% of slag micro powder;
2.5 to 5 percent of cement;
0.5 to 1.5 percent of excitant;
the sum of the total mass fractions is 100%.
2. The dredged sludge green environment-friendly improver as claimed in claim 1, wherein the superfine slag powder is granulated blast furnace slag powder with grade S95 and the specific surface area of the granulated blast furnace slag powder is more than 300 m2The activity index of the catalyst per kg and 28d is more than 95 percent.
3. The dredged sludge green environment-friendly modifier according to claim 1, wherein the cement is ordinary portland cement with the reference number of p.o. 42.5 and above.
4. The dredged sludge green environment-friendly improver as claimed in claim 1, wherein the biochemical fulvic acid is powdery plant-derived biochemical fulvic acid potassium or biochemical fulvic acid sodium.
5. The dredged sludge green environmental protection improver according to claim 1, wherein the excitant is one of sodium sulfate or sodium carbonate.
6. The dredged sludge green environment-friendly modifier as claimed in claim 1, wherein the preparation method of the modifier comprises the following steps: weighing the component materials with corresponding mass, mixing, stirring, sending into a finished product warehouse, detecting and packaging after being qualified.
7. The dredged sludge green environment-friendly improver as claimed in claim 1, wherein the improver is directly added into sludge to be uniformly mixed and stirred when in use, and the adding amount is 25-35% of the total mass of the sludge.
8. The green environment-friendly dredged sludge modifier according to claim 1, wherein the dredged sludge is from any one of rivers, lakes and seas, and the natural water content of the dredged sludge is 50-100%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233865A (en) * | 2021-06-04 | 2021-08-10 | 肖剑波 | Novel high-tech environment-friendly wall coating and preparation method and application thereof |
| CN115179423A (en) * | 2022-07-28 | 2022-10-14 | 深圳宏业基岩土科技股份有限公司 | Construction site sludge reinforcing method |
| CN116081997A (en) * | 2023-01-13 | 2023-05-09 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871283A (en) * | 1987-02-13 | 1989-10-03 | Gkn Hayward Baker, Inc. | Continuous mixing and injection of lime-fly ash slurry |
| JPH1180725A (en) * | 1997-07-11 | 1999-03-26 | Chichibu Onoda Cement Corp | Low-alkaline hydraulic composition |
| JP3435122B2 (en) * | 2000-05-29 | 2003-08-11 | 住友大阪セメント株式会社 | Plastic injection material |
| CN101805104A (en) * | 2010-04-27 | 2010-08-18 | 河海大学 | Soil treatment method for dredged sediment |
| CN104148377A (en) * | 2014-07-02 | 2014-11-19 | 上海市园林科学研究所 | Method for producing greened structure soil from silt |
| CN109293326A (en) * | 2018-11-23 | 2019-02-01 | 中国葛洲坝集团绿园科技有限公司 | A kind of curing agent and its preparation method and application for mud Treatment of Sludge |
-
2020
- 2020-10-25 CN CN202011151400.4A patent/CN112174625B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871283A (en) * | 1987-02-13 | 1989-10-03 | Gkn Hayward Baker, Inc. | Continuous mixing and injection of lime-fly ash slurry |
| JPH1180725A (en) * | 1997-07-11 | 1999-03-26 | Chichibu Onoda Cement Corp | Low-alkaline hydraulic composition |
| JP3435122B2 (en) * | 2000-05-29 | 2003-08-11 | 住友大阪セメント株式会社 | Plastic injection material |
| CN101805104A (en) * | 2010-04-27 | 2010-08-18 | 河海大学 | Soil treatment method for dredged sediment |
| CN104148377A (en) * | 2014-07-02 | 2014-11-19 | 上海市园林科学研究所 | Method for producing greened structure soil from silt |
| CN109293326A (en) * | 2018-11-23 | 2019-02-01 | 中国葛洲坝集团绿园科技有限公司 | A kind of curing agent and its preparation method and application for mud Treatment of Sludge |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233865A (en) * | 2021-06-04 | 2021-08-10 | 肖剑波 | Novel high-tech environment-friendly wall coating and preparation method and application thereof |
| CN115179423A (en) * | 2022-07-28 | 2022-10-14 | 深圳宏业基岩土科技股份有限公司 | Construction site sludge reinforcing method |
| CN116081997A (en) * | 2023-01-13 | 2023-05-09 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
| CN116081997B (en) * | 2023-01-13 | 2024-01-16 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
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| CN112174625B (en) | 2021-09-28 |
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