CN108691301B - Dredged mud in-situ solidification-based ecological revetment and preparation method thereof - Google Patents
Dredged mud in-situ solidification-based ecological revetment and preparation method thereof Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/128—Coherent linings made on the spot, e.g. cast in situ, extruded on the spot
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- 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
- C04B28/144—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 a flue gas desulfurization product
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- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
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- C04B2103/0078—Sorbent materials
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
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- 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
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
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- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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- 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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
The invention discloses an ecological revetment based on dredged mud in-situ solidification and a preparation method thereof, wherein the preparation method comprises the following steps: 1) taking the sediment as a bottom foundation of the ecological bank protection by using the preparation equipment; 2) the sludge to be dredged is sucked into a vehicle-mounted stirring device, is stirred and added with a consolidation agent and the like to form solidified silt soil slurry, and is injected into a wood pile imitating bank protection template to prepare the ecological bank protection, wherein in the solidified silt soil slurry, the mass ratio of the silt consolidation agent, the silt, the microorganism film-hanging porous ash, the foaming agent and the rheological agent is (5-15%). The invention relates to an ecological bank protection and a preparation method thereof, wherein the ecological bank protection is ecological, safe, practical, free of secondary pollution and low in comprehensive cost.
Description
Technical Field
The invention relates to the technical field of resource comprehensive utilization and water conservancy environmental protection engineering, in particular to an ecological bank protection cured in situ by using dredged mud and a preparation method thereof.
Background
In order to maintain normal flood discharge and smooth flood discharge of rivers and lakes and improve water quality and other problems, China carries out large-scale river and lake dredging every year, and therefore a large amount of dredging bottom mud is generated. The dredged mud has high natural water content, high organic matter and heavy metal content, high compressibility, low shear strength, thixotropy and fluidity, so that the dredged mud is difficult to transport, occupies a large amount of land resources due to landfill and stacking, is easy to cause secondary pollution, has poor engineering properties and cannot be directly applied to engineering, so the problems of harmless treatment, resource application and the like of the riverway dredging bottom mud become global problems, and a lot of countries consume huge resources for relevant research and treatment. The conversion of waste bottom mud into usable reclaimed soil resources through technical treatment is the mainstream direction of research of experts and scholars at home and abroad at present.
At present, the traditional disposal methods for river and lake dredging sediment mainly comprise mud throwing treatment, dredger fill land building, physical dehydration, incineration and the like, and the traditional disposal methods have the problems of occupation of precious land resources, huge transportation cost, high treatment cost, long treatment period, secondary pollution possibly caused by harmful substances such as heavy metal in the sludge and the like to the environment and the like. Although the chemical curing method can meet the requirements of various projects by controlling the formula and the mixing amount of the consolidation agent, the turnover treatment is needed, and the transportation cost is higher.
Disclosure of Invention
The invention aims to provide an ecological bank protection by utilizing dredged mud in-situ solidification and a preparation method thereof, aiming at the current ecological environment problems of difficult bottom mud resource utilization, high treatment cost, serious bank slope collapse water and soil loss, riverbed siltation, bottom mud heavy metal pollution and the like commonly existing in small and medium-sized riverways in cities and countryside of China, serious lake bank protection water and soil loss and the like, and an ecological bank protection preparation method which is ecological, safe, practical, free of secondary pollution and low in comprehensive cost through repeated research, exploration and practice demonstration, the sludge after pouring and solidification has high strength, porosity, water stability, heavy metal adsorption and water scouring resistance, and the related requirements of a bank protection structure body are met, and compared with the traditional rigid hard bank protection such as cement concrete sheet piles, wooden piles and the like, the ecological characteristics of conserving water sources, purifying water quality and meeting the functions of riverway landscape optimization and ecological environment restoration, the novel dredging mud in-situ resource utilization and ecological restoration combined treatment scheme is realized, so that the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the ecological revetment based on dredged mud in-situ solidification comprises the following steps:
(1) stirring, curing and naturally curing the slope bottom mud in situ to prepare a substrate;
(2) supporting a wood-like pile on a substrate as a bank protection template;
(3) under stirring, adding a sludge consolidation agent, microbial film-forming porous ash, a foaming agent and a rheological agent into dredged mud to obtain solidified silt slurry;
(4) and injecting the solidified silt soil slurry into a bank protection template, and leveling and maintaining to obtain the ecological bank protection based on dredged mud in-situ solidification.
The invention also discloses a preparation method of the solidified silt soil slurry for ecological bank protection, which comprises the following steps:
(1) stirring, curing and naturally curing the slope bottom mud in situ to prepare a substrate;
(2) supporting a wood-like pile on a substrate as a bank protection template;
(3) under stirring, adding a sludge consolidation agent, microorganism biofilm formation porous ash, a foaming agent and a rheological agent into the dredged mud to obtain the solidified silt slurry for ecological bank protection.
In the technical scheme, in the solidified silt soil slurry, the mass ratio of a silt consolidating agent to silt to a microbial film-forming porous ash residue to a foaming agent to a rheological agent is (5-15%), to (70-90%), to (5-15%), to (0.1-2%), so that the ecological environment problems that the slope of the conventional wood pile bank protection bank is seriously lost, a concrete sheet pile is not vegetational, and the dredging mud at the bottom of a river cannot be recycled in situ are solved, and meanwhile, an aqueous ecological system and a land ecological system are opened, so that the bank protection can conserve water sources and purify water quality.
In the technical scheme, the sludge consolidation agent comprises aluminosilicate clinker, quicklime, desulfurized gypsum, metakaolin, bentonite, a waterproof agent, an anti-dispersing agent, an adsorbent and an alkali activator; the foaming agent is an open-cell anionic surfactant type foaming agent; the rheological agent is a powdery polycarboxylic acid water reducing agent; the preparation method of the microbial biofilm formation porous ash comprises the steps of adding biomass ash into a mixed solution, soaking at 60 ℃, rinsing and drying to obtain the microbial biofilm formation porous ash; the mixed solution contains 3.2% by volume of formic acid, 2% by mass of hyaluronic acid, 0.8% by mass of 4-methylbenzyl alcohol and the balance of water; the mass ratio of the biomass ash to the mixed liquor is 1: 2.5; the preferable waterproof agent is polymer emulsion compounded by latex powder, phenolic resin and polyvinyl alcohol; the adsorbent is a compound of diatomite, phosphor lime and ethylene diamine tetraacetic acid; the mass ratio of the aluminosilicate clinker to the quicklime to the desulfurized gypsum to the metakaolin to the bentonite to the waterproofing agent to the anti-dispersant to the adsorbent to the alkali activator is 30-40 percent to 10-20 percent to 5-10 percent to 5-20 percent to 5-8 percent to 3-8 percent to 1-2 percent to 2-5 percent. The obtained product has good waterproofness, and the prepared ecological bank protection has excellent water stability.
In the technical scheme, in the step (4), through leveling and maintenance, the bank protection template is finally removed, and the ecological bank protection based on dredged mud in-situ solidification is obtained; the maintenance is natural maintenance for 7 days.
The invention further discloses the ecological bank protection based on dredged mud in-situ solidification prepared by the preparation method of the ecological bank protection based on dredged mud in-situ solidification and the solidified silt mud slurry for the ecological bank protection prepared by the preparation method of the solidified silt mud slurry for the ecological bank protection.
According to the invention, the microbial biofilm porous ash is obtained by treating the existing biomass ash, not only has the advantages of ash porosity and environmental protection, but also can form a stable whole with components such as dredging mud, a consolidating agent and the like after surface treatment, and compared with the prior art, the strength of bank protection can be reduced by directly using the biomass ash or using the biomass ash subjected to the existing surface treatment.
The invention further discloses a sludge consolidating agent, which comprises aluminosilicate clinker, calcined lime, desulfurized gypsum, metakaolin, bentonite, a waterproof agent, an anti-dispersant, an adsorbent and an alkali activator, wherein the aluminosilicate clinker comprises, by mass, 30-40%, 10-20%, 5-10%, 10-20%, 5-8%, 3-8%, 1-2%, 2-5%; the waterproof agent is polymer emulsion compounded by latex powder, phenolic resin and polyvinyl alcohol; the adsorbent is a compound of diatomite, lime phosphate and disodium ethylene diamine tetraacetate. The silt consolidating agent is an environmental-friendly underwater non-dispersed silt consolidating agent for ecological restoration, and after the consolidating agent is contacted with cations and anions in calcium-containing substances in soil, polymerization and thickening reactions are carried out to form mutually cross-linked latticed polymer chains, wrapping and connecting soil particles and filling particle pores until the whole soil system is gelled, solidified and bonded into a whole, and maintained in a wet natural maintenance mode through a maintenance period, so that the silt consolidating agent has good water stability, frost resistance, scouring resistance and ageing resistance.
The invention further discloses an application of the sludge consolidating agent in preparing an ecological bank protection based on dredged mud in-situ solidification; the application of the solidified silt slurry for ecological bank protection in preparing the ecological bank protection based on dredged mud in-situ solidification.
Specifically, the preparation method of the ecological bank protection by using dredged mud in-situ solidification of the invention can comprise the following steps:
1) carrying out in-situ stirring, leveling and curing on the bottom mud at the bottom of the river and lake side slope through the conventional equipment, and naturally curing in water to be used as a bottom foundation of an ecological bank protection structure system;
2) the method comprises the steps of supporting a wood-like pile revetment template on an underwater foundation, sucking sludge to be dredged in rivers and lakes into a vehicle-mounted stirring device by using mechanical sludge suction equipment, stirring the dredged sludge in the vehicle-mounted stirring device, adding a consolidation agent, microorganism film-hanging porous ash, a foaming agent and a rheological agent through a metering system, fully stirring and preparing into a solidified slurry liquid with fluidity, conveying the solidified slurry liquid into the wood-like pile revetment template supported in the water through a pumping device, and removing the template after the water is naturally maintained for 7 days after manual leveling, thus preparing the ecological revetment.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts an environment-friendly ecological restoration consolidating agent, after the consolidating agent is fully combined with river and lake dredging sediment, the consolidating agent generates hydration reaction to generate crystals such as ettringite and the like, and simultaneously, after the consolidating agent contacts with cations and anions in calcium-containing substances in soil, polymerization and thickening reaction are generated to form a mutually cross-linked latticed polymer chain, and the latticed polymer chain wraps and connects soil particles and fills the pores of the particles until the whole soil system is gelled, solidified and bonded into a whole, and is maintained in a wet natural maintenance mode through a maintenance period, so that the environment-friendly ecological restoration consolidating agent has good water stability, frost resistance, scouring resistance and aging resistance;
2. the ecological revetment prepared by the method meets various index requirements of a revetment structure, has good ecological characteristics of water source conservation and water quality purification compared with the traditional rigid hard revetment such as cement concrete sheet piles, wood piles and the like, and provides a place for the living and inhabitation of animals and plants;
3. the ecological revetment prepared by the invention contains microorganism biofilm-forming porous ash, has a certain porosity, not only purifies water quality, but also gets through an aquatic ecosystem and a land ecosystem, so that the exchange of substances, energy and information can be carried out, the ecological revetment has a remarkable edge effect, can provide living and propagating spaces for various aquatic organisms, has important practical significance for improving biological diversity, treating water and soil loss, stabilizing river slopes, adjusting climate, beautifying environment and developing tourism activities, and meets the functions of optimizing river channel landscape and recovering ecological environment; realizes a new treatment scheme combining dredged mud in-situ resource application and ecological restoration, and has good social benefit, economic benefit and environmental benefit.
Drawings
FIG. 1 is a schematic view of a river bank structure;
wherein, road 1, sponge soil bank protection 2, sponge soil bank protection 3, river 4, basement 5.
Detailed Description
Example one
The sludge consolidating agent is an environment-friendly underwater undispersed sludge consolidating agent for ecological restoration, and comprises the following components in parts by mass:
30 percent of aluminosilicate clinker
15 percent of quicklime
10 percent of desulfurized gypsum
20 percent of metakaolin
8 percent of bentonite
7 percent of waterproof agent
2 percent of anti-dispersant
3 percent of adsorbent
Alkali activator 5%
Wherein the waterproof agent is polymer emulsion compounded by 30 percent of latex powder, 60 percent of phenolic resin and 10 percent of polyvinyl alcohol; the adsorbent is prepared by compounding 50% of diatomite, 35% of lime phosphate and 15% of ethylene diamine tetraacetic acid; the other components are all commercial products.
TABLE 1 consolidating agent leachate toxicity test results
Table 1 shows the performance test results of the sludge consolidating agent prepared for the first time, and it can be known that the toxicity test of the leachate of the environment-friendly underwater undispersed sludge consolidating agent for ecological restoration provided by the invention meets the limit value of class iii water quality standard in GB 3838-2002 "quality standard of surface water environment".
Example two
The preparation method of the ecological bank protection by utilizing dredged mud in-situ solidification comprises the following steps:
(1) carrying out in-situ stirring solidification and leveling on the bottom mud at the bottom of the river slope by using the conventional in-situ stirring equipment, and naturally curing in water to be used as a bottom foundation of an ecological bank protection structure system;
(2) supporting a wood-like pile revetment template on an underwater substrate, sucking the dredged mud in a river into a vehicle-mounted stirring device by using mechanical mud sucking equipment, stirring the dredged mud in the vehicle-mounted stirring device, adding a consolidation agent, microorganism film-forming porous ash, a foaming agent and a rheological agent through a metering system, fully stirring and preparing into a solidified sludge slurry liquid with fluidity;
(3) conveying the obtained product to a shored wood-like pile revetment template through a pumping device, naturally preserving the obtained product in water for 7 days after artificial leveling, and then removing the template to obtain the ecological revetment.
The solidified mud slurry comprises, by mass, 15 parts of a mud consolidation agent, 70 parts of dredged mud, 13 parts of microbial film-forming porous ash, 1 part of a foaming agent and 1 part of a rheological agent; the sludge consolidating agent is an environment-friendly underwater undispersed sludge consolidating agent for ecological restoration, and the composition and the mass ratio of the sludge consolidating agent are shown in the first embodiment.
Adding formic acid, hyaluronic acid and 4-methyl benzyl alcohol into water to obtain a mixed solution, adding biomass ash slag burnt by straws into the mixed solution, soaking at 60 ℃, rinsing and drying to obtain microorganism biofilm-forming porous ash slag; the mixed solution contains 3.2% by volume of formic acid, 2% by mass of hyaluronic acid, 0.8% by mass of 4-methylbenzyl alcohol and the balance of water; the mass ratio of the biomass ash to the mixed liquid is 1: 2.5.
The dredged mud and the consolidating agent are metered by the vehicle-mounted device, then are preliminarily mixed through the flow divider valve, and are intensively stirred and mixed by the vehicle-mounted stirring device, so that the dredged mud and the consolidating agent are fully and uniformly mixed, the heavy metals and the like are more fully captured, and the stabilization effect of the substances such as the heavy metals and the like in the sediment is ensured.
The invention has the characteristics of better overall water dispersibility resistance, underwater coagulation resistance, water flow scouring resistance, ecological environmental protection, no toxicity, no need of special maintenance and the like after being used for ecological restoration and environment-friendly underwater undispersed silt consolidating agent to solidify silt.
Tests prove that the compressive strength of the ecological revetment prepared by the invention in 28 days is 1.2MPa, which is far more than the result of 0.5MPa of the existing sponge soil; the porosity reaches 28%, and the adsorption and exchange capacity is excellent; the dry density reaches 1.3g/cm3See table 2 for details.
Table 2 ecological revetment performance prepared according to the present invention
The shore protection prepared by adopting the biomass ash slag fired by the straws has the compressive strength of 0.6MPa in 28 days, the shore protection prepared by adopting the biomass ash slag fired by the straws treated by the existing acetic acid/sodium alginate has the compressive strength of 0.8MPa in 28 days, the water stability coefficient of 0.41, the shore protection prepared by adopting the conventional polyvinyl alcohol/cement as the silt consolidating agent has the compressive strength of 0.8MPa in 28 days, the porosity of 13 percent and poor freezing resistance, and cannot bear freeze-thaw cycle. FIG. 1 is a schematic view of a river bank structure; comprises a road 1, a spongy soil revetment 2, a spongy soil revetment 3, river water 4 and a substrate 5; the ecological revetment is a spongy soil ecological revetment, has good porosity, dry density and the like, can effectively exchange substances, energy and information, has obvious edge effect, can provide living and propagating space for various aquatic organisms, and can improve biological diversity, control water and soil loss, stabilize river slope, regulate climate and beautify environment; especially has excellent mechanical property, water stability, frost resistance and scouring resistance.
The raw materials of the invention are all existing products, such as slope bottom mud, dredged mud, biomass ash and various chemical raw materials which are commercially available or obtained according to the conventional mode. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The dredged mud in-situ solidification-based ecological revetment is characterized by comprising the following steps of:
(1) stirring, curing and naturally curing the slope bottom mud in situ to prepare a substrate;
(2) supporting a wood-like pile on a substrate as a bank protection template;
(3) under stirring, adding a sludge consolidation agent, microbial film-forming porous ash, a foaming agent and a rheological agent into dredged mud to obtain solidified silt slurry;
(4) injecting the solidified silt soil slurry into a bank protection template, and leveling and maintaining to obtain the ecological bank protection based on dredged mud in-situ solidification;
in the solidified silt soil slurry, the mass ratio of a silt consolidating agent, silt, microbial film-forming porous ash, a foaming agent and a rheological agent is (5-15%), (70-90%), (5-15%), (0.1-2%);
the sludge consolidation agent comprises aluminosilicate clinker, quicklime, desulfurized gypsum, metakaolin, bentonite, a waterproof agent, an anti-dispersant, an adsorbent and an alkali activator; the foaming agent is an open-cell anionic surfactant type foaming agent; the rheological agent is a powdery polycarboxylic acid water reducing agent; the preparation method of the microbial biofilm formation porous ash comprises the steps of adding biomass ash into a mixed solution, soaking at 60 ℃, rinsing and drying to obtain the microbial biofilm formation porous ash; the mixed solution contains 3.2% by volume of formic acid, 2% by mass of hyaluronic acid, 0.8% by mass of 4-methylbenzyl alcohol and the balance of water; the mass ratio of the biomass ash to the mixed liquor is 1: 2.5;
the waterproof agent is polymer emulsion compounded by latex powder, phenolic resin and polyvinyl alcohol; the adsorbent is a compound of diatomite, phosphor lime and ethylene diamine tetraacetic acid; the mass ratio of the aluminosilicate clinker to the quicklime to the desulfurized gypsum to the metakaolin to the bentonite to the waterproofing agent to the anti-dispersant to the adsorbent to the alkali activator is 30-40 percent to 10-20 percent to 5-10 percent to 5-20 percent to 5-8 percent to 3-8 percent to 1-2 percent to 2-5 percent.
2. The ecological bank protection based on dredged mud in-situ solidification according to the claim 1, wherein in the step (4), the ecological bank protection based on dredged mud in-situ solidification is obtained through leveling, maintenance and finally dismantling of the bank protection template; the maintenance is natural maintenance for 7 days.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969073.7A CN112301952B (en) | 2018-06-08 | 2018-06-08 | Preparation method of ecological revetment based on dredged mud in-situ solidification |
| CN201810588535.3A CN108691301B (en) | 2018-06-08 | 2018-06-08 | Dredged mud in-situ solidification-based ecological revetment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588535.3A CN108691301B (en) | 2018-06-08 | 2018-06-08 | Dredged mud in-situ solidification-based ecological revetment and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010969073.7A Division CN112301952B (en) | 2018-06-08 | 2018-06-08 | Preparation method of ecological revetment based on dredged mud in-situ solidification |
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| Publication Number | Publication Date |
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| CN108691301A CN108691301A (en) | 2018-10-23 |
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| CN109650808B (en) * | 2018-12-28 | 2022-04-01 | 肇庆市珈旺环境技术研究院 | Composite curing agent based on biomass and sludge mixed burning ash and application thereof |
| CN110668668A (en) * | 2019-09-10 | 2020-01-10 | 安徽三链生态环保有限公司 | Pollution degradation type ecological brick manufacturing process |
| CN110590316A (en) * | 2019-10-15 | 2019-12-20 | 中瀛港湾（厦门）建设工程有限公司 | Construction method of bank protection project |
| CN110668775A (en) * | 2019-10-15 | 2020-01-10 | 中瀛港湾（厦门）建设工程有限公司 | River and lake treatment method |
| CN113047222A (en) * | 2021-02-24 | 2021-06-29 | 堡森(上海)新材料科技有限公司 | Method for preparing ecological restoration revetment by using river sludge through stirring hopper |
| CN114409209A (en) * | 2021-12-14 | 2022-04-29 | 上海琸源水生态环境工程有限公司 | Method for recycling bottom mud softened by hard revetment |
| CN116639946A (en) * | 2023-06-26 | 2023-08-25 | 王曦锐 | Sludge curing agent and sludge in-situ curing method |
| CN116589255B (en) * | 2023-07-14 | 2023-10-13 | 中国建筑第六工程局有限公司 | Pavement subbase material based on dredging sludge and preparation method thereof |
| CN117550821B (en) * | 2024-01-10 | 2024-03-12 | 石家庄铁道大学 | Plant-growing solid waste base polymer and preparation method and application thereof |
| CN117645455B (en) * | 2024-01-30 | 2024-03-26 | 天津中岩大地材料科技有限公司 | Dredged silt curing material and pipeline curing hydraulic filling method |
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| DE10025125A1 (en) * | 2000-05-20 | 2001-11-22 | Arealeconow Gmbh | Method to manufacture surface coating or solid body; involves using support device and adding water-setting filling mass made of waste paper products, with binding agents and supplementary materials |
| CN101475332B (en) * | 2009-01-19 | 2011-07-20 | 中国科学院武汉岩土力学研究所 | Preparation and use of sludge-stalk fibrous composite |
| CN103918375A (en) * | 2014-04-22 | 2014-07-16 | 西南大学 | Method for quickly improving soil aggregate content through biomass ash |
| CN104844024A (en) * | 2015-04-28 | 2015-08-19 | 铜陵海源超微粉体有限公司 | High-performance gel material prepared by using sludge industrial waste residue and preparation method thereof |
| CN105970979B (en) * | 2016-05-10 | 2018-05-11 | 河海大学 | A kind of ecological bank protecting method based on utilizing solidified earth from sludge |
| CN106082903B (en) * | 2016-06-17 | 2018-02-09 | 武汉大学 | A kind of dredging silt composite curing agent |
| CN106186285A (en) * | 2016-08-29 | 2016-12-07 | 苏州赛华仪控股份有限公司 | Water treatment filler based on modified biomass lime-ash and preparation method thereof |
| CN107445428A (en) * | 2017-08-31 | 2017-12-08 | 堡森（上海）环境工程有限公司 | Regardless of scattered sludge curing agent under a kind of environment-friendly type water for restoration of the ecosystem |
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