CN116143364A - Solidifying method of river and lake silt - Google Patents
Solidifying method of river and lake silt Download PDFInfo
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- CN116143364A CN116143364A CN202310430664.0A CN202310430664A CN116143364A CN 116143364 A CN116143364 A CN 116143364A CN 202310430664 A CN202310430664 A CN 202310430664A CN 116143364 A CN116143364 A CN 116143364A
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- 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
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- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for solidifying river and lake sludge, which comprises the following steps of S1, detecting the water content of the river and lake sludge; s2, adding different amounts of adsorption modification materials into the river and lake sludge according to the different water contents of the river and lake sludge, stirring and standing for a certain time; s3, adding different amounts of curing reinforcing materials into the river and lake sludge according to different application scenes of the river and lake sludge, fully stirring and standing for a certain time; wherein the adsorption modified material comprises the following components in percentage by weight: 20-80 parts of reclaimed machine-made sand dust collection powder, 10-50 parts of decorative waste powder abrasive, and 10-60 parts of reclaimed brick aggregate; the curing reinforcing material comprises the following components in percentage by weight: 75-90 parts of common cement, 5-25 parts of aluminate cement, 0.5-5 parts of early strength agent and 0.03-1 part of retarder. The invention has the advantages that the river and lake silt is effectively solidified by utilizing the building solid waste, and the solidified river and lake silt is used for road pavement, thereby realizing resource utilization.
Description
Technical Field
The invention belongs to the technical field of river and lake sludge treatment and resource utilization, and particularly relates to a method for solidifying river and lake sludge.
Background
In order to restore the energy-regulating capacity of the river and the lake, the ecological environment of the river and the lake is improved and repaired, dredging engineering is needed to be carried out, but the dredged sludge at the bottom of the lake is often piled up naturally or by using geotechnical cloth bags, and the existing sludge treatment mode has large occupied area, large smell and long drying time. Therefore, how to dispose of and recycle the sludge is a problem to be solved.
At present, in various grades of road/road construction, a great deal of lime soil is used as a roadbed or subbase. But there are two outstanding environmental issues: firstly, the lime production process is a high energy consumption and high CO 2 The emission process, thus the massive use of lime is contrary to the policies of carbon peak and carbon neutralization which are currently and vigorously advocated in China; secondly, in the mixing process of the lime soil, the dust raising problem is serious, and the environment and personnel are damaged. Therefore, there is a need to develop materials for roadbeds or underlayments that can replace the lime.
Attempts have been made to use sludge for the manufacture of foundations or underlayments, however, the produced sludge has a high water content and poor physical properties and cannot be used as a material for the manufacture of foundations or underlayments.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the invention provides a method for solidifying river and lake sludge, which has the advantages that the river and lake sludge is effectively solidified by utilizing building solid waste, and the solidified river and lake sludge is used in road pavement, so that the recycling utilization is realized.
The method for solidifying the river and lake sludge comprises the following steps of S1, detecting the water content of the river and lake sludge; s2, adding different amounts of adsorption modification materials into the river and lake sludge according to the different water contents of the river and lake sludge, stirring and standing for a certain time; s3, adding different amounts of curing reinforcing materials into the river and lake sludge according to different application scenes of the river and lake sludge, and then fully stirring and standing for a certain time; wherein the adsorption modified material comprises the following components in percentage by weight: 20-80 parts of reclaimed machine-made sand dust collection powder, 10-50 parts of decorative waste powder abrasive, and 10-60 parts of reclaimed brick aggregate; the curing reinforcing material comprises the following components in percentage by weight: 75-90 parts of common cement, 5-25 parts of aluminate cement, 0.5-5 parts of early strength agent and 0.03-1 part of retarder.
According to the method for solidifying the river and lake sludge, the operation process is simple, different amounts of adsorption modification materials are added into the river and lake sludge according to different water contents, the liquid and plastic limits of the river and lake sludge are improved, the water content is reduced, and then the solidifying reinforcing materials are added to increase the strength and rigidity of the river and lake sludge, so that the rapid hydration of cement and water in the river and lake sludge can be avoided, the river and lake sludge is effectively solidified, the strength of the solidified river and lake sludge is improved, and the river and lake sludge can be applied to road construction.
According to one embodiment of the invention, in S2, when the water content of the river and lake sludge is greater than 90% and less than 120%, the weight ratio of the adsorption modifying material to the river and lake sludge is 4:6; when the water content of the river and lake sludge is between 70% and 90%, the weight ratio of the adsorption modifying material to the river and lake sludge is 3:7; when the water content of the river and lake sludge is more than 50% and less than 70%, the weight ratio of the adsorption modifying material to the river and lake sludge is 2:8.
According to one embodiment of the invention, in S2, the time of rest is 6-48 hours; in S3, standing for 0.5-5h.
According to one embodiment of the invention, the fineness of the reclaimed machine-made sand dust collection powder is 100-300 meshes, and the water content is 5-15%.
According to one embodiment of the invention, the decoration garbage grinding powder is formed by grinding and mixing an air adding block, a concrete block and a brick mixture through a ball mill; the mass ratio of the air adding block to the concrete block to the brick mixture is 1:6:3, a step of; the fineness of the decorative garbage grinding powder is 50-400 meshes, and the water content is 5-15%.
According to one embodiment of the invention, the recycled brick aggregate is prepared from brick garbage through sorting, crushing and processing, and has the particle size of 5-14mm and the water content of 1-7%.
According to one embodiment of the invention, the portland cement is at least one of 32.5 grade and 42.5 grade; wherein the 32.5-grade cement is slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the 42.5-grade cement is ordinary silicate cement or slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the aluminate cement is grade 62.5.
According to one embodiment of the invention, the early strength agent is one or two of sodium aluminate, sodium thiocyanate, calcium nitrate and calcium formate; the retarder is one or two of sodium tripolyphosphate, sodium hexametaphosphate and white sugar.
According to one embodiment of the invention, when the river and lake sludge is used for road foundations, the weight of the curing reinforcement is 3% -5% of the weight of the river and lake sludge.
According to one embodiment of the invention, when the river and lake sludge is used in the road underlayment, the weight of the curing reinforcement is 6% -12% of the weight of the river and lake sludge.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The following examples are illustrative only and are not to be construed as limiting the invention.
The method for solidifying river and lake sludge and the application according to the embodiment of the present invention are specifically described below.
The method for solidifying river and lake sludge according to the embodiment of the invention comprises the following steps,
s1, detecting the water content of river and lake sludge;
s2, adding different amounts of adsorption modification materials into the river and lake sludge according to different water contents of the river and lake sludge, stirring and standing for 6-168 hours; to improve the properties of the river and lake sludge;
wherein the adsorption modified material comprises the following components in percentage by weight: 20-80 parts of reclaimed machine-made sand dust collection powder, 10-50 parts of decorative waste powder abrasive, and 10-60 parts of reclaimed brick aggregate;
the fineness of the dust collection powder of the reclaimed machine-made sand is 100-300 meshes, and the water content is 5-15%.
The decoration garbage grinding powder is formed by mixing air-adding blocks, concrete blocks and brick mixtures after grinding by a ball mill; the mass ratio of the air adding block to the concrete block to the brick mixture is 1:6:3, a step of; the fineness of the decorative garbage grinding powder is 50-400 meshes, and the water content is 5-15%.
On the one hand, the regenerated machine-made sand dust collection powder and the decoration garbage grinding powder can effectively adsorb water in the river and lake sludge, and on the other hand, as the sludge is high liquid limit clay, the liquid limit, the plastic limit and the plasticity index of the river and lake sludge can be adjusted by adding the regenerated machine-made sand dust collection powder and the decoration garbage grinding powder, so that the property of the river and lake sludge is improved.
The recycled brick aggregate is prepared from brick garbage through sorting, crushing and processing, and has the particle size of 5-14mm and the water content of 1-7%. The recycled brick aggregate has good water absorbability, can improve the grading of river and lake sludge, provide a water dispersion channel, improve the water dispersion efficiency, and can improve the strength of the river and lake sludge after solidification.
When the water content of the river and lake sludge is more than 90% and less than 120%, the weight ratio of the adsorption modifying material to the river and lake sludge is 4:6; when the water content of the river and lake sludge is between 70% and 90%, the weight ratio of the adsorption modifying material to the river and lake sludge is 3:7; when the water content of the river and lake sludge is more than 50% and less than 70%, the weight ratio of the adsorption modifying material to the river and lake sludge is 2:8.
The adsorption modified material added in the invention can absorb water in the river and lake sludge, and can reduce the water content of the whole river and lake sludge, so that the water content of the river and lake sludge is reduced to below 30%; the liquid limit and the plastic limit of the river and lake sludge are reduced, and the property of the sludge is improved; simultaneously, the strength of the sludge can be improved.
S3, adding different amounts of curing reinforcing materials into the river and lake sludge according to different application scenes of the river and lake sludge, fully stirring and standing for 0.5-5h; when the river and lake sludge is used for road roadbed, the weight of the solidified reinforcing material is 3-5% of the weight of the river and lake sludge; when the river and lake sludge is used for the road subbase, the weight of the curing reinforcing material is 6-12% of the weight of the river and lake sludge.
Wherein the components and weight percentages of the curing reinforcing material are as follows: 75-90 parts of common cement, 5-25 parts of aluminate cement, 0.5-5 parts of early strength agent and 0.03-1 part of retarder. The common cement is at least one of 32.5 grade and 42.5 grade; wherein the 32.5-grade cement is slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the 42.5-grade cement is ordinary silicate cement or slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the aluminate cement is grade 62.5. The early strength agent is one or two of sodium aluminate, sodium thiocyanate, calcium nitrate and calcium formate; the retarder is one or two of sodium tripolyphosphate, sodium hexametaphosphate and white sugar.
The common cement is a cementing material and can endow the solidified river and lake sludge with certain strength. The hydration speed of aluminate cement is high, and the early strength of the solidified river and lake sludge can be rapidly improved; sodium aluminate, sodium thiocyanate, calcium nitrate and calcium formate can promote cement hydration rapidly, and early strength of solidified river and lake sludge is improved. The sodium tripolyphosphate, the sodium hexametaphosphate and the white sugar can delay the hydration of cement, increase the curing operation time of sludge and avoid the hydration of cement before uniform mixing.
According to the invention, the river and lake sludge with high water content is rapidly solidified through the adsorption modified material and the solidification reinforcing material, and filter pressing equipment is not required to be used for filter pressing the river and lake sludge or long-time airing is not required, so that the cost is saved; the river and lake sludge is solidified by using decoration garbage and building garbage, so that the recycling utilization of building solid wastes is promoted; the bearing ratio and 7d unconfined compressive strength of the solidified river and lake sludge are high, the solidified river and lake sludge can be directly used for paving town road roadbeds or bottom bases instead of lime soil, and the town road roadbeds or bottom bases formed by paving the solidified river and lake sludge have the advantages of high strength and good shrinkage resistance, and meanwhile, the problem of dust emission when paving roadbeds or bottom bases by using the lime soil is solved. :
example 1: adding an adsorption modified material into river and lake sludge with the water content of 118.6%, stirring by using an ALLU stirring head, and standing for 48 hours, wherein the weight ratio of the adsorption modified material to the river and lake sludge is 4:6; and adding a curing reinforcing material, wherein the curing reinforcing material is 3% of the weight of river and lake silt, fully mixing by using a digging machine, standing for 5 hours, and paving a road subgrade after standing is completed.
Wherein the adsorption modified material comprises the following components in percentage by weight: 75 parts of reclaimed machine-made sand dust collection powder, 10 parts of decoration waste powder abrasive, and 15 parts of reclaimed brick aggregate. The curing reinforcing material comprises the following components in percentage by weight: 65 parts of 32.5-grade pozzolanic silicate cement, 10 parts of 42.5-grade pozzolanic silicate cement, 20 parts of aluminate cement, 2 parts of sodium thiocyanate, 2 parts of calcium formate and 1 part of sodium tripolyphosphate. :
example 2: adding an adsorption modified material into river and lake sludge with the water content of 83.5%, stirring by using an ALLU stirring head, and standing for 48 hours, wherein the weight ratio of the adsorption modified material to the river and lake sludge is 3:7; and adding a curing reinforcing material, wherein the curing reinforcing material is 5% of the weight of river and lake silt, fully mixing by using a digging machine, standing for 5 hours, and paving a road subgrade after standing is completed.
Wherein the adsorption modified material comprises the following components in percentage by weight: 50 parts of reclaimed machine-made sand dust collection powder, 40 parts of decoration waste powder abrasive, and 10 parts of reclaimed brick aggregate. The curing reinforcing material comprises the following components in percentage by weight: 40 parts of 32.5-grade fly ash silicate cement, 42.5-grade ordinary silicate cement, 15 parts of aluminate cement, 2.95 parts of sodium aluminate and 0.05 part of sodium hexametaphosphate. :
example 3: adding an adsorption modified material into river and lake sludge with the water content of 55.8%, stirring by using an ALLU stirring head, and standing for 6 hours, wherein the weight ratio of the adsorption modified material to the river and lake sludge is 2:8; and adding a curing reinforcing material, wherein the curing reinforcing material is 7% of the weight of river and lake silt, fully mixing by using a digging machine, standing for 0.5h, and paving the road subbase layer after standing.
Wherein the adsorption modified material comprises the following components in percentage by weight: 20 parts of reclaimed machine-made sand dust collection powder, 30 parts of decoration waste powder abrasive, and 50 parts of reclaimed brick aggregate. The curing reinforcing material comprises the following components in percentage by weight: the 32.5 grade comprises 90 parts of slag silicate cement, 8 parts of aluminate cement, 1.4 parts of calcium nitrate and 0.6 part of white sugar. :
example 4: adding an adsorption modified material into river and lake sludge with the water content of 66.3%, stirring the mixture by using an ALLU stirring head, and standing for 24 hours, wherein the weight ratio of the adsorption modified material to the river and lake sludge is 2:8; and adding a curing reinforcing material, wherein the curing reinforcing material is 11% of the weight of river and lake silt, fully mixing by using a digging machine, standing for 2.5h, and paving the road subbase layer after standing.
Wherein the adsorption modified material comprises the following components in percentage by weight: 20 parts of reclaimed machine-made sand dust collection powder, 30 parts of decoration waste powder abrasive, and 50 parts of reclaimed brick aggregate. The curing reinforcing material comprises the following components in percentage by weight: 30 parts of 32.5-grade fly ash silicate cement, 60 parts of 42.5-grade slag silicate cement, 8 parts of aluminate cement, 0.6 part of calcium formate, 0.7 part of calcium nitrate, 0.2 part of sodium hexametaphosphate and 0.5 part of white sugar.
Comparative example 1
River and lake sludge which is not treated by the method.
Comparative example 2
The curing agent is added into the water and river sludge after lime.
Comparative example 3
The curing agent is added into the cement to form river and lake sludge.
The results of the above examples and comparative examples are shown in table 1:
TABLE 1
As can be seen from table 1:
the river and lake sludge in comparative example 1 is not cured and improved by the invention, the liquid limit is 76.5 to be more than 50, the plasticity index is 41.4 to be more than 26, the river and lake sludge is high liquid limit clay, the bearing ratio is only 2.1%, the bearing capacity is low, and the use requirement of the road subgrade is difficult to meet.
The final water content of the engineering soil formed by curing in examples 1, 2, 3 and 4 of the invention is lower than 25%.
The liquid limit and the plasticity index of the solidified river and lake sludge in the embodiment 1 and the embodiment 2 meet the use requirement of road roadbed materials (the liquid limit of soil requirement for roadbed is not more than 50 and the plasticity index is not more than 26), and the bearing ratio is 61.5 percent and 105.8 percent respectively, which greatly exceeds the minimum strength (CBR) requirement (more than or equal to 8 percent) of a highway and a main road bed on filling materials. Reference standard CJJ 194-2013 "urban road subgrade design Specification". In comparative example 2, the existing curing agent is used for curing the river and lake sludge, the liquid limit and the plasticity index of the cured sludge are difficult to meet the standard requirements, the bearing ratio is only 5.9%, the strength of the cured river and lake sludge is low, and the use requirements of town road roadbeds are difficult to meet.
The liquid limit and the plasticity index of the solidified river and lake sludge in the embodiment 3 and the embodiment 4 meet the use requirement of the road subbase layer material, the 7d unconfined compressive strength is 2.8MPa and 3.2MPa respectively, and exceeds the unconfined compressive strength requirement (more than or equal to 2.5 MPa) of the base layer under extra heavy traffic, and the method is referred to the standard CJJ 169-2011 'urban road pavement design specification'. And the comparative example 3 uses the existing curing agent to cure the river and lake silt, the 7d unconfined compressive strength of the cured silt is only 1.3MPa, the strength is lower, and the use requirement of the town road subbase layer is difficult to meet.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A method for solidifying sludge in river and lake is characterized by comprising the following steps,
s1, detecting the water content of river and lake sludge;
s2, adding different amounts of adsorption modification materials into the river and lake sludge according to the different water contents of the river and lake sludge, stirring and standing for a certain time;
s3, adding different amounts of curing reinforcing materials into the river and lake sludge according to different application scenes of the river and lake sludge, and then fully stirring and standing for a certain time;
wherein the adsorption modified material comprises the following components in percentage by weight: 20-80 parts of reclaimed machine-made sand dust collection powder, 10-50 parts of decorative waste powder abrasive, and 10-60 parts of reclaimed brick aggregate; the curing reinforcing material comprises the following components in percentage by weight: 75-90 parts of common cement, 5-25 parts of aluminate cement, 0.5-5 parts of early strength agent and 0.03-1 part of retarder;
in S2, when the water content of the river and lake sludge is more than 90% and less than 120%, the weight ratio of the adsorption modifying material to the river and lake sludge is 4:6; when the water content of the river and lake sludge is between 70% and 90%, the weight ratio of the adsorption modifying material to the river and lake sludge is 3:7; .
2. The method for solidifying a river/lake sludge according to claim 1, wherein in S2, when the water content of the river/lake sludge is more than 50% and less than 70%, the weight ratio of the adsorption modifying material to the river/lake sludge is 2:8.
3. The method for solidifying river and lake sludge according to claim 2, wherein in S2, the standing time is 6 to 48 hours; in S3, standing for 0.5-5h.
4. A method for solidifying a river or lake silt according to claim 3, wherein the fineness of the reclaimed machine-made sand dust collecting powder is 100-300 meshes and the water content is 5-15%.
5. The method for solidifying river and lake sludge according to claim 1, wherein the decoration garbage grinding powder is formed by grinding and mixing air-filled blocks, concrete blocks and brick mixtures through a ball mill; the mass ratio of the air adding block to the concrete block to the brick mixture is 1:6:3, a step of; the fineness of the decorative garbage grinding powder is 50-400 meshes, and the water content is 5-15%.
6. The method for solidifying sludge in rivers and lakes according to claim 1, wherein the recycled brick aggregate is prepared from brick garbage by sorting, crushing and processing, and the recycled brick aggregate has a particle size of 5-14mm and a water content of 1-7%.
7. The method for solidifying river and lake sludge according to claim 1, wherein the portland cement is at least one of 32.5 grade and 42.5 grade; wherein the 32.5-grade cement is slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the 42.5-grade cement is ordinary silicate cement or slag silicate cement or fly ash silicate cement or pozzolanic silicate cement; the aluminate cement is grade 62.5.
8. The method for solidifying river and lake sludge according to claim 1, wherein the early strength agent is one or two of sodium aluminate, sodium thiocyanate, calcium nitrate and calcium formate; the retarder is one or two of sodium tripolyphosphate, sodium hexametaphosphate and white sugar.
9. The method of curing a river/lake sludge of claim 1 wherein the weight of the curing reinforcement is 3% to 5% of the weight of the river/lake sludge when the river/lake sludge is used in a road bed.
10. The method of curing a river/lake sludge of claim 1 wherein the weight of the curing reinforcement is from 6% to 12% of the weight of the river/lake sludge when the river/lake sludge is used in the underlayment of the roadway.
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| CN112358249A (en) * | 2020-11-26 | 2021-02-12 | 中建三局绿色产业投资有限公司 | River silt base engineering soil and preparation method thereof |
| CN113912362A (en) * | 2021-11-11 | 2022-01-11 | 江苏绿和环境科技有限公司 | Building slurry curing treatment process |
| CN113956003A (en) * | 2021-09-23 | 2022-01-21 | 江苏绿和环境科技有限公司 | Early-strength type regeneration slope protection brick and preparation method thereof |
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2023
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| CN102584117A (en) * | 2012-01-10 | 2012-07-18 | 长安大学 | Sludge composite curing agent and application thereof |
| CN102583952A (en) * | 2012-03-14 | 2012-07-18 | 天津市市政工程设计研究院 | Sludge solidifying agent |
| CN108249713A (en) * | 2017-12-26 | 2018-07-06 | 三川德青科技有限公司 | A kind of river and lake silt resource utilization method |
| CN112047676A (en) * | 2020-07-31 | 2020-12-08 | 河海大学 | Light solidified soil for resource utilization of river and lake bottom mud and preparation method and application thereof |
| CN112358249A (en) * | 2020-11-26 | 2021-02-12 | 中建三局绿色产业投资有限公司 | River silt base engineering soil and preparation method thereof |
| CN113956003A (en) * | 2021-09-23 | 2022-01-21 | 江苏绿和环境科技有限公司 | Early-strength type regeneration slope protection brick and preparation method thereof |
| CN113912362A (en) * | 2021-11-11 | 2022-01-11 | 江苏绿和环境科技有限公司 | Building slurry curing treatment process |
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