CN113200659B - Pile foundation slurry curing treatment method - Google Patents

Pile foundation slurry curing treatment method Download PDF

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CN113200659B
CN113200659B CN202110258820.0A CN202110258820A CN113200659B CN 113200659 B CN113200659 B CN 113200659B CN 202110258820 A CN202110258820 A CN 202110258820A CN 113200659 B CN113200659 B CN 113200659B
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slurry
parts
curing treatment
curing
pile foundation
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CN113200659A (en
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王传波
张广帅
田晓阳
刘慧宁
楚志斌
段晓峰
邵宁
颜晋
乔阿龙
王庆
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Shandong Hi Speed Engineering Construction Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/008Sludge treatment by fixation or solidification
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening

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Abstract

The application relates to the field of engineering construction, and particularly discloses a pile foundation slurry curing treatment method, which comprises the following steps: s1, slurry collection: setting a slurry storage tank, and conveying slurry into the slurry storage tank; s2, curing treatment: adding a curing agent into the slurry, and stirring the slurry uniformly; s3, solid-liquid separation: and (3) carrying out solid-liquid separation on the slurry treated in the step (S2), carrying out solid-phase landfill treatment, and recycling the liquid phase into a slurry storage tank. The method has the advantage of reducing the environmental pollution caused by pile foundation slurry treatment.

Description

Pile foundation slurry curing treatment method
Technical Field
The application relates to the field of engineering construction, in particular to a pile foundation slurry curing treatment method.
Background
In recent years, the scale of the infrastructure of China is rapidly enlarged, waste slurry, namely a mixture mixed by clay and water, is usually generated in the construction of pile foundation engineering, and the treatment mode of the slurry mostly adopts a mode of direct outward transportation and discharge and natural drying.
Because the discharge site is often far away from the job site, and at the in-process of mud outward transportation, abandonment mud moisture content is higher for the easy seepage of mud, thereby lead to municipal pipeline to block up, or submerge the farmland, block up river course etc. easily causes great environmental pollution.
Disclosure of Invention
In order to reduce the environmental pollution caused by pile foundation slurry treatment, the application provides a pile foundation slurry curing treatment method.
The pile foundation slurry curing treatment method provided by the application adopts the following technical scheme: a pile foundation slurry curing treatment method comprises the following steps:
s1, slurry collection: a slurry storage tank is arranged, and slurry is conveyed into the slurry storage tank;
s2, curing treatment: adding a curing agent into the slurry, and stirring the slurry uniformly;
s3, solid-liquid separation: and (3) performing solid-liquid separation on the slurry treated in the step (S2), performing solid-phase landfill treatment, and recycling the liquid phase into a slurry storage pool.
By adopting the technical scheme, the working personnel firstly convey the waste slurry in the construction site to the slurry storage tank for storage, so that the environment pollution caused by accumulation of the waste slurry in the construction site is reduced, and meanwhile, the slurry is effectively treated in a centralized manner; and then, the curing treatment agent is added to cure the slurry, so that the colloid structure of the slurry is damaged, the binding force of clay and water is reduced, finally, the solid-liquid separation is carried out on the slurry, the water content of the slurry is reduced, the liquid phase is recycled into the slurry storage tank for cyclic treatment, and the solid phase is subjected to landfill treatment, so that the leakage condition in the outward transportation process of the slurry is reduced, and therefore, the effect of reducing the environmental pollution caused by the treatment of the pile foundation slurry is obtained.
Optionally, the curing treatment agent is prepared by mixing the following raw materials in parts by weight:
6-15 parts of sand;
5-14 parts of gravel;
10-20 parts of potassium chloride;
10-20 parts of sodium sulfate;
40-60 parts of ferric hydroxide colloid;
the weight ratio of the curing agent to the slurry is (1-3): 20.
by adopting the technical scheme, because the sand and the gravel are adopted, in the stirring process, the movement speeds of the slurry colloidal particles, the sand and the gravel are different under the same stirring speed, so that the sand and the gravel continuously break the colloid structure of the slurry; then potassium chloride provides chloride ions, sodium sulfate provides sulfate ions, and the chloride ions and the sulfate ions play a competitive adsorption role and are combined with the clay in the slurry colloidal particles to repel water molecules, so that the combination strength of the clay and water is reduced; and then the ferric hydroxide colloid neutralizes the negative charge of the slurry colloid, destroys the colloid structure of the slurry, and generates coagulation reaction with slurry colloidal particles to form precipitate, the clay and the water are separated, the binding force of the clay and the water is reduced, the solid-liquid separation is promoted, the solid phase and the liquid phase separated from the slurry are respectively conveniently treated, and the water content of the slurry is reduced, so that the effect of reducing the environmental pollution caused by the treatment of the pile foundation slurry is obtained.
Optionally, the curing treatment agent is prepared by mixing the following raw materials in parts by weight:
8-12 parts of sand;
10-14 parts of macadam;
12-16 parts of potassium chloride;
15-20 parts of sodium sulfate;
45-55 parts of ferric hydroxide colloid;
the weight ratio of the curing treatment agent to the slurry is 1:10.
by adopting the technical scheme, the raw materials with the combination and the weight part range are adopted, so that the bonding force between the clay and water can be effectively reduced when the slurry is treated by the obtained curing treatment agent, solid-liquid separation is promoted, the solid phase and the liquid phase separated from the slurry are conveniently and respectively treated, and the water content of the slurry is reduced, so that the effect of reducing the environmental pollution caused by the treatment of the pile foundation slurry is obtained.
Optionally, the curing treatment agent further comprises natural wood wax, and the weight part of the natural wood wax is 15-20 parts.
By adopting the technical scheme, as the natural wood wax is adopted and is subjected to coagulation reaction with the slurry colloid in the ferric hydroxide colloid to form a precipitate, the natural wood wax is adsorbed on the surface of the precipitated particles to form a protective film, so that the possibility that water reacts with the precipitated clay particles again is reduced, the hydration effect of the clay is reduced, the solid-liquid separation is further promoted, and the water content of the slurry is reduced; meanwhile, when solid phase after solid-liquid separation is buried, the solid phase is not easy to react with water in soil, so that the solid phase is stably kept in the soil for a long time and is not easy to diffuse, and the pollution of the solid phase to the soil is reduced, thereby obtaining the effect of reducing the environmental pollution caused by pile foundation slurry treatment.
Optionally, in S2, the curing agent is dissolved and diluted with water and then added to the slurry, wherein the weight ratio of the curing agent to water is (1-3): 10.
By adopting the technical scheme, the solidification treatment agent is dissolved and diluted by adopting water, so that various reactions of raw materials and slurry in the solidification treatment agent are promoted, the reaction is accelerated, the solidification treatment speed is improved, meanwhile, the raw materials and slurry colloidal particles in the solidification treatment agent are fully mixed, the full reaction is promoted, and the solidification treatment effect is improved.
Optionally, in S2, quicklime is added to the slurry, and the mixture is stirred to be uniform, wherein the weight ratio of the quicklime to the slurry is (1-5): 100.
by adopting the technical scheme, after the binding force of the clay and water is reduced, a part of water molecules are separated from clay particles, quicklime reacts with the part of water molecules to release a large amount of heat, the temperature in the slurry tank is increased, the reactions of the curing treatment agent and the residual slurry colloidal particles are promoted, the generation of clay particle precipitates is further promoted, the subsequent solid-liquid separation is promoted, and the water content of the slurry is reduced.
Optionally, a filter screen for filtering impurities is arranged in the pulp storage tank.
By adopting the technical scheme, as the filter screen is arranged, the mud firstly passes through the filter screen when entering the mud storage tank, and then various impurities such as garbage, leaves and the like are filtered, so that the influence of the impurities on the mud solidification treatment is reduced.
Optionally, in S3, a centrifugal separation method is used to perform solid-liquid separation on the slurry treated in S2.
By adopting the technical scheme, the centrifugal separation method is adopted, so that the solid phase and the liquid phase are settled at different rates under the action of centrifugal force and the same rotating speed, and the effective separation of the solid phase and the liquid phase is realized, thereby obtaining the effect of reducing the environmental pollution caused by pile foundation slurry treatment.
In summary, the present application has the following beneficial effects:
1. because this application adopts the solidification treatment agent, carries out solidification treatment to mud, destroys the colloid structure of mud, reduces the cohesion of clay and water, carries out solid-liquid separation to mud at last, has reduced the moisture content of mud, and the liquid phase is retrieved and is carried out circulation treatment in the mud storage pond, and the solid phase carries out landfill processing, has reduced the seepage condition of mud outward transportation in-process, consequently, has obtained the effect that reduces the environmental pollution that causes when pile foundation mud is handled.
2. In this application preferred adoption sand and rubble, the colloidal structure of mud is constantly broken, potassium chloride and sodium sulfate play the competitive adsorption effect, combine with the clay in the mud micelle, repel the hydrone, reduce the bonding strength of clay and water, the iron hydroxide colloid neutralizes the negative charge that the mud colloid was taken place the coagulation reaction with the mud micelle, form the sediment, clay and separation of water, reduce the cohesion of clay and water, promote solid-liquid separation, be convenient for handle the solid phase and the liquid phase that the mud was separated respectively, the moisture content of mud has been reduced, consequently, the effect of the environmental pollution who causes when having obtained reduction pile foundation mud and handled.
3. The natural wood wax is adsorbed on the surface of the precipitated particles to form a protective film, so that the possibility that water reacts with the precipitated clay particles again is reduced, the hydration effect of clay is reduced, the solid-liquid separation is further promoted, and the water content of slurry is reduced.
4. The natural wood wax ensures that the solid phase is not easy to react with water in the soil when the solid phase is buried, so that the solid phase is stably kept in the soil for a long time and is not easy to diffuse, and the pollution of the solid phase to the soil is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a stock chest according to an embodiment of the present invention.
Description of reference numerals: 1. a pulp storage tank; 2. a filter screen; 3. a pulp inlet; 4. and a pulp outlet.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. The special description is as follows: the following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples were obtained from ordinary commercial sources unless otherwise specified.
The grain diameter of the sand is 1-1.5 mm.
The particle size of the broken stone is 5-6 mm.
The centrifuge adopts LW type slurry separation vertical centrifuge manufactured by Kyowa environmental protection equipment Limited of Zhejiang Lishui, model LW450 x 1600.
The water is industrial water.
Preparation example of curing agent
Preparation example 1
Uniformly mixing the following raw materials in parts by weight: 6 parts of sand, 14 parts of crushed stone, 10 parts of potassium chloride, 20 parts of sodium sulfate and 60 parts of ferric hydroxide colloid to prepare the curing treating agent.
Preparation example 2
Uniformly mixing the following raw materials in parts by weight: 12 parts of sand, 10 parts of crushed stone, 16 parts of potassium chloride, 18 parts of sodium sulfate, 45 parts of ferric hydroxide colloid and 20 parts of natural wood wax to prepare the curing treatment agent.
Preparation example 3
The present preparation differs from preparation 1 in that: the weight parts of the raw materials are different, and the details are shown in table 1.
Preparation example 4
The preparation examples differ from preparation example 2 in that: the weight parts of the raw materials are different, and the details are shown in table 1.
Preparation example 5
The present preparation differs from preparation 1 in that: the weight parts of the raw materials are different, and the details are shown in table 1.
Preparation example 6
The preparation examples differ from preparation example 2 in that: the weight parts of the raw materials are different, and the details are shown in table 1.
Preparation example 7
Uniformly mixing the following raw materials in parts by weight: 40 parts of sand and 60 parts of gravel to prepare the curing agent.
Preparation example 8
Uniformly mixing the following raw materials in parts by weight: 50 parts of potassium chloride and 50 parts of sodium sulfate to prepare the curing agent.
Preparation example 9
Uniformly mixing the following raw materials in parts by weight: and (3) 100 parts of ferric hydroxide colloid to prepare the curing treatment agent.
TABLE 1
Figure BDA0002970290370000041
Figure BDA0002970290370000051
Examples
Example 1
A pile foundation slurry curing treatment method comprises the following steps:
s1, slurry collection: as shown in fig. 1, set up near the construction site and store up thick liquid pond 1, the welding has filter screen 2 on the pool wall of storing up thick liquid pond 1, it goes into thick liquid mouth 3 and play thick liquid mouth 4 to have seted up on the pool wall of storing up thick liquid pond 1, and go into thick liquid mouth 3 and play thick liquid mouth 4 and be located the both sides of filter screen 2 respectively, carry mud to storing up thick liquid pond 1 through going into thick liquid mouth 3 in, and by filter screen 2 keep away from one side of the bottom of the pool of storing up thick liquid pond 1 and get into storing up thick liquid pond 1, filter screen 2 can filter rubbish, impurity such as leaf, mud after the filtration is stored in storing up thick liquid pond 1.
S2, curing treatment: adding the curing agent prepared in preparation example 1 into the filtered slurry, and stirring until the mixture is uniform, wherein the weight ratio of the curing agent to the slurry is 1.
S3, solid-liquid separation: and (3) conveying the slurry treated in the step (S2) to a centrifuge through a slurry outlet 4, performing solid-liquid separation through a centrifugal separation method at the rotating speed of 2800r/min, conveying the separated solid phase to a landfill site for landfill treatment, and recycling the liquid phase into a slurry storage tank for circular treatment.
Example 2
This example differs from example 1 in that: in S2 of this example, the curing agent prepared in preparation example 2 was used, and the ratio of the curing agent to the slurry in parts by weight was 7:100, and the curing agent is dissolved and diluted by water and then added into the slurry, wherein the weight ratio of the curing agent to the water is 1. And adding quicklime into the slurry, wherein the weight ratio of the quicklime to the slurry is 1.
Example 3
This example differs from example 2 in that: s2, the mud is treated by the curing treatment agent prepared in preparation example 3, the weight parts of the curing treatment agent and the mud are different, the weight parts of the curing treatment agent and water are different, and the weight parts of quicklime and the mud are different, which is detailed in Table 2.
Example 4
This example differs from example 2 in that: s2, the mud is treated by the curing treatment agent prepared in preparation example 4, the weight parts of the curing treatment agent and the mud are different, the weight parts of the curing treatment agent and water are different, and the weight parts of quicklime and the mud are different, which is detailed in Table 2.
Example 5
This example differs from example 1 in that: in S2, the slurry was treated with the curing agent prepared in preparation example 5, and the ratio of the curing agent to the slurry in parts by weight was 3.
Example 6
This example differs from example 2 in that: s2, the mud is treated by the curing agent prepared in preparation example 6, the weight ratio of the curing agent to the mud is different, the weight ratio of the curing agent to water is different, and the weight ratio of quicklime to the mud is different, which is detailed in Table 2.
Example 7
This example differs from example 6 in that: in S2, the curing agent is not dissolved and diluted by water, and quicklime is not added.
Example 8
This example differs from example 6 in that: and quicklime is not added in the S2.
Example 9
This example differs from example 6 in that: in S2, the curing agent is not dissolved and diluted with water.
Comparative example
Comparative example 1
The slurry is directly transported and discharged.
Comparative example 2
This comparative example differs from example 6 in that the curing agent obtained in preparation example 7 was used in S2, and the curing agent was not diluted by dissolution in water.
Comparative example 3
This comparative example differs from example 6 in that the curing agent prepared in preparation example 8 was used in S2.
Comparative example 4
This comparative example differs from example 6 in that the curing agent prepared in preparation example 9 was used in S2.
TABLE 2
Figure BDA0002970290370000061
Performance test
Test method
The water content of the slurry of comparative example 1 was measured by "gravimetric method for measuring water content of municipal sludge" 2 in CJ/T221-2005, and the water content of the solid phase separated from the slurry treated in examples and comparative examples 2-4 was measured, and the test results are shown in Table 3.
TABLE 3
Examples/comparative examples Water content ratio
Example 1 31%
Example 2 14%
Example 3 20%
Example 4 13%
Example 5 32%
Example 6 11%
Example 7 27%
Example 8 23%
Example 9 22%
Comparative example 1 95%
Comparative example 2 78%
Comparative example 3 61%
Comparative example 4 58%
It can be seen from the combination of example 3 and comparative example 1 and table 3 that, when the solidification treatment method of the present application is adopted in example 3 to solidify the slurry, the water content of the solid phase separated from the treated slurry is reduced by 75% compared with the water content of the slurry directly discharged by outward transport without treatment in comparative example 1, and the leakage condition in the outward transport process of the slurry is reduced, so that the effect of reducing the environmental pollution caused by the treatment of the pile foundation slurry is obtained.
The reason for the analysis may be: the staff carries the discarded mud of job site to storing up in the thick liquid pond 1 earlier, when getting into 1 bottoms in the thick liquid pond, and mud is earlier through the filtration of filter screen 2, and on impurity such as leaf, rubbish were stayed filter screen 2, with the mud separation, reduced the influence that impurity such as leaf, rubbish produced in to the mud treatment process. The mud is temporarily stored in the mud storage tank 1, the waste mud is not easy to accumulate on the construction site, so that the environmental pollution to the construction site when the mud is transported outside is reduced, and meanwhile, the mud can be effectively and intensively treated in the mud storage tank 1.
Then the solidification treatment agent provided by the application is added, and in the stirring process, under the same stirring speed, the sand and the gravel continuously break the colloid structure of the slurry due to different movement speeds of slurry colloidal particles, the sand and the gravel. And then the potassium chloride provides chloride ions in the slurry, the sodium sulfate provides sulfate ions, and as slurry colloidal particles are continuously dispersed in the process of damaging the slurry, the chloride ions and the sulfate ions play a competitive adsorption role, are combined with the clay in the slurry colloidal particles, occupy binding points on the clay, repel water molecules out, and reduce the binding strength of the clay and water. Meanwhile, sodium sulfate provides sodium, and potassium chloride provides potassium, which are all beneficial elements required by soil.
The ferric hydroxide colloid carrying positive charges neutralizes the negative charges carried on the slurry colloid, the colloid structure of the slurry is further destroyed, the ferric hydroxide colloid and the slurry generate coagulation reaction to form precipitate, so that the clay is further separated from water, the binding force of the clay and the water is reduced, and the bound water in the slurry is more changed into free water.
And finally, performing solid-liquid separation on the slurry by a centrifugal separation method, so that the water content of the slurry is reduced, recycling the liquid phase into a slurry storage tank for circular treatment, and performing landfill treatment on the solid phase, so that the leakage condition in the outward transportation process of the slurry is reduced, and the effect of reducing the environmental pollution caused by pile foundation slurry treatment is obtained.
As can be seen by combining example 3, comparative example 1, comparative example 2, comparative example 3 and comparative example 4 with table 3, example 3 used the curing treatment agent prepared in preparation example 3, i.e., the curing treatment agent proposed herein, including sand, crushed stone, potassium chloride, sodium sulfate and iron hydroxide colloid; comparative example 2 the curing agent prepared in preparation example 7 was used without potassium chloride, sodium sulfate and iron hydroxide colloid; comparative example 3 the curing agent prepared in preparation example 8 was used, and no sand, crushed stone and iron hydroxide colloid were contained; comparative example 4 the curing agent prepared in preparation example 9 was used, and sand, crushed stone, potassium chloride and sodium sulfate were not contained. According to test results, the solid-phase water content of the mud treated in the comparative examples 2, 3 and 4 is lower than that of the mud directly discharged by outward transport without treatment in the comparative example 1, but the treatment effect is smaller than that of the example 3, so that the synergistic effect of the sand, the broken stone, the potassium chloride, the sodium sulfate and the ferric hydroxide colloid is reflected, the mud can be effectively cured, the solid-liquid separation of the mud is promoted, the water content of the mud is reduced, and the leakage condition in the mud outward transport process is reduced, so that the effect of reducing the environmental pollution caused by the treatment of the pile foundation mud is obtained.
It can be seen from the results of experiments that, when the curing agent prepared in production example 3 was used in example 3 and the curing agent prepared in production example 6 was used in example 6, and more natural wood wax was added to the curing agent prepared in production example 6 than to the curing agent prepared in production example 3, the water content of the solid phase of the slurry after the treatment in example 6 was reduced by 9% as compared with the solid phase of the slurry after the treatment in example 3, which shows the effect of promoting the solid-liquid separation of the slurry and reducing the water content of the slurry by the addition of the natural wood wax, thereby reducing the leakage during the outward transportation of the slurry, and thus, the effect of reducing the environmental pollution caused by the treatment of the pile foundation slurry was obtained.
The reason for the analysis may be: in the slurry subjected to coagulation reaction, precipitate is formed, the natural wood wax is adsorbed on the surface of precipitated particles to form a layer of protective film, the protective film has hydrophobicity, the possibility that water molecules which become free water react with the precipitated clay particles again is reduced, the hydration effect of the clay is reduced, the solid-liquid separation is further promoted, and the water content of the slurry is reduced. In addition, when the separated solid phase is buried, the solid phase with the protective film is not easy to react with water in soil, so that the solid phase is stably kept in the soil for a long time and is not easy to diffuse, and the pollution of the solid phase to the soil is reduced, therefore, the effect of reducing the environmental pollution caused by pile foundation slurry treatment is obtained.
As can be seen from the combination of example 7 and example 8 and table 3, compared with example 7, in the curing treatment method of example 8, the raw materials in the curing treatment agent are dissolved and diluted with water before the curing treatment agent is added, so that various reactions between the raw materials in the curing treatment agent and the slurry are promoted, the reaction is accelerated, the curing treatment speed is increased, and meanwhile, the raw materials in the curing treatment agent and slurry colloidal particles are fully mixed to promote full reactions, so that the curing treatment effect is improved. The measurement results of the solid-phase water content of the treated slurry showed that the solid-phase water content of the slurry treated by the solidification treatment method of example 8 was lower.
As can be seen from the combination of example 7 and example 9 and table 3, in the solidification treatment method of example 9, compared with example 7, quicklime is added to the slurry, and reacts with the free water generated after the treatment of the solidification treatment agent in the slurry, releasing a large amount of heat, raising the temperature in the slurry tank, promoting the reaction of the solidification treatment agent with the slurry colloidal particles, further promoting the generation of precipitates, promoting the subsequent solid-liquid separation, and reducing the water content of the slurry. The measurement of the solid-phase water content of the treated slurry revealed that the solid-phase water content of the slurry treated by the solidification treatment method of example 9 was lower.
As can be seen from the combination of example 6 and example 7 and table 3, in the solidification treatment method of example 6, compared with example 7, the solidification treatment agent is dissolved and diluted with water before being added, and quicklime is added to the slurry, and the quicklime can react with not only the free water generated after the slurry is treated with the solidification treatment agent but also the water diluting the solidification treatment agent, thereby further promoting the generation of heat. From the test results, the solid-phase water content of the slurry treated by the solidification treatment method of example 6 was lower than those of examples 7, 8 and 9, and the synergistic effect of diluting and dissolving the solidification treatment agent with water and adding quicklime to the slurry was exhibited, thereby improving the solidification treatment effect.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (5)

1. A pile foundation slurry curing treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1, slurry collection: setting a slurry storage tank (1) and conveying slurry into the slurry storage tank (1);
s2, curing treatment: adding a curing agent into the slurry, and stirring the slurry uniformly;
the curing treatment agent is prepared by mixing the following raw materials in parts by weight:
6-15 parts of sand, namely,
5 to 14 portions of broken stone,
10-20 parts of potassium chloride, namely,
10-20 parts of sodium sulfate,
40 to 60 parts of ferric hydroxide colloid,
15-20 parts of natural wood wax;
the weight ratio of the curing agent to the slurry is (1-3): 20; the curing agent is dissolved and diluted by water and then added into the slurry, and the weight ratio of the curing agent to the water is (1-3) to 10; the grain size of the sand is 1-1.5 mm, and the grain size of the broken stone is 5-6 mm;
s3, solid-liquid separation: and (3) carrying out solid-liquid separation on the slurry treated in the step (S2), carrying out solid-phase landfill treatment, and recycling the liquid phase into the slurry storage tank (1).
2. The pile foundation mud curing treatment method according to claim 1, characterized in that: the curing treatment agent is prepared by mixing the following raw materials in parts by weight:
8-12 parts of sand,
10-14 parts of broken stone,
12 to 16 portions of potassium chloride, and the like,
15-20 parts of sodium sulfate,
45 to 55 parts of ferric hydroxide colloid,
15-20 parts of natural wood wax;
the weight ratio of the curing treatment agent to the slurry is 1:10.
3. the pile foundation mud curing treatment method of claim 1, wherein: in the S2, quicklime is added into the slurry and stirred uniformly, and the weight ratio of the quicklime to the slurry is (1-5): 100.
4. the pile foundation mud curing treatment method of claim 1, wherein: and a filter screen (2) for filtering impurities is arranged in the pulp storage tank (1).
5. The pile foundation mud curing treatment method of claim 1, wherein: and in the S3, performing solid-liquid separation on the slurry treated in the S2 by adopting a centrifugal separation method.
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