CN114942316A - Detection method for recycling of muck - Google Patents
Detection method for recycling of muck Download PDFInfo
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- CN114942316A CN114942316A CN202210601088.7A CN202210601088A CN114942316A CN 114942316 A CN114942316 A CN 114942316A CN 202210601088 A CN202210601088 A CN 202210601088A CN 114942316 A CN114942316 A CN 114942316A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
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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
Abstract
The invention discloses a muck recycling detection method, which comprises the following steps: drying and screening the residue soil to obtain residue soil with a target particle size; preparing a slurry sample by using the residue soil with the target particle size; adding flocculants with the same dosage and different types into a plurality of mud samples to obtain a plurality of first samples, and performing a suction filtration test on each first sample to obtain a first flocculant; adding first flocculating agents with different dosages into a plurality of mud samples to obtain a plurality of second samples, and performing a first filter-pressing test on each second sample to obtain a second flocculating agent; adding a second flocculating agent to the plurality of mud samples respectively to obtain a plurality of third samples; and carrying out a second filter pressing test on the plurality of third samples, adding a curing agent, shaping and heating to determine the water content of the mud cakes and the curing agent proportion of the mud cakes. The method for detecting the recycling of the muck provided by the embodiment of the invention is convenient to fully utilize the mud with higher content in the muck, can bring certain economic benefit and is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of muck recycling, in particular to a method for detecting recycling of engineering muck.
Background
The muck is one kind of construction waste, in the related technology, the muck of the shield and other projects is usually directly transported and buried without being subjected to environmental protection treatment, and the muck contains a certain amount of gravels with economic value and mud with higher content, wherein the mud with small particle size and higher content is not fully utilized, so that the waste of resources is caused.
Disclosure of Invention
Therefore, the embodiment of the invention provides a muck recycling detection method which is convenient for fully utilizing mud with higher content in muck.
The method for detecting the recycling of the muck provided by the embodiment of the invention comprises the following steps:
drying and screening the residue soil to obtain residue soil with a target particle size;
preparing a slurry sample by using the residue soil with the target particle size;
adding different types of flocculants with the same dosage into a plurality of mud samples to obtain a plurality of first samples, and performing suction filtration test on each first sample to obtain a first flocculant;
adding different doses of the first flocculating agent into a plurality of mud samples to obtain a plurality of second samples, and carrying out a first filter-pressing test on each second sample to obtain a second flocculating agent;
adding the second flocculant to a plurality of mud samples to obtain a plurality of third samples;
carrying out a second filter-pressing test on the third samples to obtain mud cakes with different water contents, shaping and heating the mud cakes mixed with the same amount of curing agent to obtain first test samples, and carrying out a strength test on the first test samples to determine the water contents of the mud cakes;
and/or carrying out a second filter pressing test on the third samples to obtain a plurality of mud cakes with the same water content, shaping and heating the mud cakes mixed with the curing agents with different dosages to obtain second test samples, and carrying out a strength test on the second test samples to determine the curing agent proportion of the mud cakes.
The method for detecting the recycling of the muck provided by the embodiment of the invention is convenient to fully utilize the mud with higher content in the muck, can bring certain economic benefit and is more environment-friendly.
In some embodiments, the target particle size muck is a muck having a particle size of less than 0.075 millimeters.
In some embodiments, the suction filtration test comprises the steps of:
respectively extracting upper-layer water liquid formed after flocculation in the plurality of first samples by using negative pressure;
and respectively measuring the time for extracting a plurality of first samples under negative pressure to a set standard, wherein the first flocculating agent is a flocculating agent of a type corresponding to the lower limit value of the measured extraction time.
In some embodiments, the first filter press test comprises the steps of:
respectively pressing out upper-layer water liquid formed after flocculation in the second sample by using a first filter pressing device;
and respectively measuring the time from the first filter pressing device to filter pressing of the plurality of second samples to a set standard, wherein the second flocculating agent is the first flocculating agent with the dosage corresponding to the measured lower limit value of the filter pressing time.
In some embodiments, the second filter press test is conducted by pressing a third sample into a mud cake using a second filter press apparatus.
In some embodiments, the mixing of the curing agent and the mudcake includes the steps of:
crushing the mud cakes by using a crushing device;
and adding a curing agent into the crushed mud cakes, and uniformly stirring the mud cakes and the crushed mud cakes by using a stirring device.
In some embodiments, the setting and heating of the mud cake comprises the steps of:
stirring and uniformly mixing the crushed mud cakes and a curing agent, and then sending the mixture into a mould to be shaped into a blank;
and sending the blank into a muffle furnace for high-temperature heating and strengthening.
In some embodiments, the heating temperature within the muffle is between 800 degrees and 1000 degrees.
In some embodiments, when different dosages of the curing agent are mixed into a plurality of mud cakes having the same water content, the ratio of the mass of the curing agent to the volume of the mud cakes is between 0.02 grams per cubic centimeter and 0.08 grams per cubic centimeter.
In some embodiments, the ratio of the mass of the first flocculating agent to the mass of the mud sample is between 0.0001 and 0.0003 when different doses of the first flocculating agent are added to a plurality of mud samples.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention.
Reference numerals:
an oven 1; a screen shaker 2; a suction filtration device 3; a first filter-pressing device 4; a second filter pressing device 5; an extruder 6; a muffle 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the method for detecting recycling of muck according to the embodiment of the present invention includes the following steps:
s1: and drying and screening the residue soil to obtain the residue soil with the target particle size.
Specifically, after an engineering field worker mails a residue soil detection sample to a laboratory, firstly, the residue soil can be heated by using the oven 1, water in the residue soil is vaporized to form dry residue soil, then, the dry residue soil can be sufficiently screened by using the screen shaker 2, and the dry residue soil is respectively screened out according to particle size intervals of more than 10 mm, 5 mm to 10 mm, 1.25 mm to 5 mm, 0.075 mm to 1.25 mm and less than 0.075 mm.
The specific gravity data of the dry residue soil in the total residue soil detection sample can be measured, and the specific gravity data of the residue soil in each particle size interval can be measured, so that the residue soil in the particle size intervals of more than 10 mm, 5 mm to 10 mm, 1.25 mm to 5 mm, 0.075 mm to 1.25 mm and less than 0.075 mm can be respectively processed and utilized.
Wherein, the dregs with the grain diameter less than 0.075 mm can be taken as the dregs with the target grain diameter.
S2: and preparing a slurry sample by using the residue soil with the target particle size.
Specifically, the slurry sample can be prepared by adding water to the residue soil with the target particle size obtained in step S1 and uniformly stirring, and the proportion of the residue soil with the target particle size in the slurry sample can be controlled to sixteen%.
S3: adding the same dosage of different types of flocculating agents into a plurality of mud samples to obtain a plurality of first samples, and performing suction filtration test on each first sample to obtain a first flocculating agent.
Specifically, the slurry sample prepared in step S2 may be divided into multiple portions, after the slurry sample is prepared into the first sample and flocculated for a certain period of time, a suction filtration test may be performed on each first sample, and through a result of the suction filtration test, a type of the flocculant added to one of the first samples having the best flocculation effect may be determined as the first flocculant.
S4: different dosages of the first flocculant are added to multiple slurry samples to obtain multiple second samples, and a first filter-press test is performed on each second sample to obtain a second flocculant.
Specifically, the slurry sample prepared in step S2 may be divided into multiple portions, after the slurry sample is prepared into second samples and flocculated for a certain period of time, a filter-press test may be performed on each second sample, and according to the filter-press test result, a corresponding dosage of the first flocculant added to one of the second samples with the best flocculation effect may be determined as the second flocculant.
S5: a second flocculant is added to each of the plurality of slurry samples to obtain a plurality of third samples.
Specifically, the mud sample prepared in step S2 may be divided into a plurality of portions, and a plurality of third samples may be prepared by adding the second flocculant to the plurality of mud samples, respectively, and it is known from the foregoing tests that the second flocculant may be one type of flocculant having the best flocculation effect on the mud sample of the type among the plurality of test samples, and may be a dosage of flocculant.
S6: and carrying out a second filter-pressing test on the third samples to obtain mud cakes with different water contents, shaping and heating the mud cakes mixed with the curing agent with the same dosage to obtain first test samples, and carrying out strength test on the first test samples to determine the water contents of the mud cakes. Specifically, the strength of the obtained first test samples can be detected, wherein the water content of the mud cake corresponding to the first test sample with the best strength can be the water content of the mud cake pressed by mud when the residue soil is reused in the later period.
And carrying out a second filter-pressing test on the third samples to obtain a plurality of mud cakes with the same water content, shaping and heating the mud cakes mixed with the curing agents with different dosages to obtain second test samples, and carrying out a strength test on the second test samples to determine the curing agent proportion of the mud cakes. Specifically, the strength of the obtained second test samples can be detected, wherein the dosage of the curing agent corresponding to the second test sample with the best strength can be the dosage of the curing agent mixed with the mud cake during the later period of residue soil recycling.
For slurry produced in the muck treatment in the engineering construction process, the muck recycling detection method provided by the embodiment of the invention can obtain the type of a flocculating agent with the best flocculation effect, the best proportion of the mud amount and the flocculating agent amount, the best water content of mud cakes pressed before mixing a curing agent and the best proportion of the mud cake amount and the curing agent amount, so that a finished product formed by high-temperature strengthening can better meet the requirements in practical use, thereby being capable of conveniently and fully utilizing mud with higher content in the muck, bringing certain economic benefit and being more environment-friendly.
The finished product after high-temperature strengthening molding can be bricks, tiles and the like, can be used for building construction, and is convenient for recycling of muck resources.
In some embodiments, the suction filtration test comprises the steps of:
and respectively extracting upper-layer water liquid formed after flocculation in the plurality of first samples by utilizing negative pressure.
And respectively measuring the time for extracting a plurality of first samples under negative pressure until a set standard is reached, wherein the first flocculating agent is the flocculating agent of the type corresponding to the lower limit value of the measured extraction time.
Specifically, as shown in fig. 1, the suction filtration device 3 may be used to separately extract the upper layer water liquid formed after flocculation in the plurality of first samples, and separately measure the time consumed from the beginning of extraction to the draining of the water in the first samples, the time consumed by the slurry with the better flocculation effect is shorter, wherein the flocculant of the corresponding type in the group with the shortest consumed time may be the required first flocculant.
Wherein suction filter device 3 can be including the mud groove that is used for depositing first sample, be used for providing the negative pressure and depositing the buchner flask of extraction water liquid for the mud groove, be used for extracting the vacuum pump of air in the buchner flask and be used for monitoring the manometer of the interior negative pressure value of buchner flask, mud groove and buchner flask are in the connected state so that under the effect of negative pressure extraction, the water liquid in the mud groove can enter into to the buchner flask in.
In some embodiments, the first filter press test comprises the steps of:
and respectively pressing out upper-layer water liquid formed after flocculation in the second sample by using a first filter pressing device 4.
And respectively measuring the time taken by the first filter pressing device 4 for filter pressing of the plurality of second samples to set standards, wherein the second flocculating agent is the first flocculating agent with the dosage corresponding to the measured lower limit value of the filter pressing time.
Specifically, as shown in fig. 1, the flocculated second samples can be pressed into clods with the same water content by using the first filter pressing device 4, and the time consumed from the start of filter pressing to the pressing of the clods is measured, the time consumed by the mud with the better flocculation effect is shorter, wherein the first flocculating agent with the corresponding dosage in the group with the shortest consumed time can be the second flocculating agent.
In some embodiments, the second filter press test is conducted by pressing a third sample into a mud cake using a second filter press apparatus 5. Specifically, as shown in fig. 1, when a first test sample is prepared, a plurality of third samples are selected, the flocculated third samples can be pressed into mud cakes with different water contents by using the second filter pressing device 5, and when a second test sample is prepared, a plurality of third samples are selected, and the flocculated third samples can be pressed into mud cakes with the same water content by using the second filter pressing device 5.
In some embodiments, the mixing of the curing agent and the mud cake comprises the steps of:
and crushing the mud cakes by using a crushing device.
And adding a curing agent into the crushed mud cakes, and uniformly stirring the mud cakes and the crushed mud cakes by using a stirring device.
Specifically, the extruder 6 having the crushing device, the conveying device, and the stirring device may be used, the crushing device may be used to crush the mud cake first, the curing agent may be added to the stirring device after the crushed mud cake is sent to the stirring device through the conveying device, and the two may be mixed uniformly by the stirring device.
In some embodiments, the setting heating of the mudcake comprises the steps of:
stirring and uniformly mixing the crushed mud cakes and a curing agent, and then sending the mixture into a mould to be shaped into a blank;
and (4) conveying the blank into a muffle furnace 7 for high-temperature heating and strengthening.
Specifically, as shown in fig. 1, the crushed mud cake and the curing agent are uniformly mixed in the extruder 6, and then the mixture is extruded into a mold to be shaped into a blank to be reinforced, and then the blank is sent into the muffle 7 to be reinforced at a high temperature of 800-1000 degrees, so as to improve the strength and hardness of the final product, wherein the blank can be in the shape of a brick, a tile, etc., and the high temperature of 800-1000 degrees is selected, so that the reinforced product has better quality and effect.
In some embodiments, the ratio of the mass of the setting agent to the volume of the mud cake is between 0.02 grams per cubic centimeter and 0.08 grams per cubic centimeter when different doses of the setting agent are mixed into a plurality of mud cakes having the same water content, and the ratio of the mass of the first flocculating agent to the mass of the mud cake is between 0.0001 and 0.0003 when different doses of the first flocculating agent are added to a plurality of mud samples.
Specifically, when the second test sample is prepared in step S6, the ratio of the mass of the curing agent to the volume of the mud cake is set to be between 0.02 g/cc and 0.08 g/cc, and in step S4, the ratio of the mass of the first flocculating agent to the mass of the mud sample is set to be between 0.0001 and 0.0003, so that the efficiency of test detection can be improved while economic benefits are ensured.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A detection method for recycling of muck is characterized by comprising the following steps:
drying and screening the residue soil to obtain residue soil with a target particle size;
preparing a slurry sample by using the residue soil with the target particle size;
adding different types of flocculants with the same dosage into a plurality of mud samples to obtain a plurality of first samples, and performing suction filtration test on each first sample to obtain a first flocculant;
adding the first flocculating agent with different dosages into a plurality of mud samples to obtain a plurality of second samples, and carrying out a first filter-pressing test on each second sample to obtain a second flocculating agent;
adding the second flocculant to a plurality of mud samples to obtain a plurality of third samples;
carrying out a second filter-pressing test on the third samples to obtain mud cakes with different water contents, shaping and heating the mud cakes mixed with the same amount of curing agent to obtain first test samples, and carrying out a strength test on the first test samples to determine the water contents of the mud cakes;
and/or carrying out a second filter pressing test on the third samples to obtain a plurality of mud cakes with the same water content, shaping and heating the mud cakes mixed with the curing agents with different dosages to obtain second test samples, and carrying out a strength test on the second test samples to determine the curing agent proportion of the mud cakes.
2. The method for detecting the reuse of the dregs according to claim 1, wherein the dregs with the target particle size are dregs with a particle size of less than 0.075 mm.
3. The method for detecting the recycling of the muck according to claim 1, wherein the suction filtration test comprises the following steps:
respectively extracting upper-layer water liquid formed after flocculation in the plurality of first samples by using negative pressure;
and respectively measuring the time for extracting the plurality of first samples under negative pressure to a set standard, wherein the first flocculating agent is a type of flocculating agent corresponding to the measured lower limit value of the extraction time.
4. The muck recycling detection method according to claim 3, wherein the first filter-press test comprises the steps of:
respectively pressing out upper-layer water liquid formed after flocculation in the second sample by using a first filter pressing device;
and respectively measuring the time from the first filter pressing device to filter pressing of the plurality of second samples to a set standard, wherein the second flocculating agent is the first flocculating agent with the dosage corresponding to the measured lower limit value of the filter pressing time.
5. The method for detecting soil reuse according to claim 1, wherein the second filter press test is a press-molding of a third sample into a cake using a second filter press device.
6. The muck recycling detection method according to claim 1, wherein the mixing of the curing agent and the mud cake comprises the steps of:
crushing the mud cakes by using a crushing device;
and adding a curing agent into the crushed mud cakes, and uniformly stirring the mud cakes and the crushed mud cakes by using a stirring device.
7. The muck recycling detection method according to claim 6, wherein the shaping and heating of the mud cake includes the steps of:
stirring and uniformly mixing the crushed mud cakes and a curing agent, and then sending the mixture into a mould to be shaped into a blank;
and sending the blank into a muffle furnace for high-temperature heating and strengthening.
8. The method according to claim 7, wherein the heating temperature in the muffle furnace is 800 to 1000 ℃.
9. The method according to claim 1, wherein when the curing agent is mixed in different amounts into a plurality of mudcakes having the same water content, the ratio of the mass of the curing agent to the volume of the mudcake is between 0.02 g/cc and 0.08 g/cc.
10. The method according to claim 1, wherein when different doses of the first flocculating agent are added to a plurality of slurry samples, the ratio of the mass of the first flocculating agent to the mass of the slurry samples is between 0.0001 and 0.0003.
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