Vacuum electro-osmosis solidification integrated test system and method for repairing contaminated sediment

Abstract

The present application belongs to the technical field of soil engineering sludge solidification, and particularly relates to a vacuum electro-osmotic solidification and contaminated sediment repair integrated test system and method; the present application can monitor the change of the water content and the conductivity of the contaminated sediment in the electro-osmosis treatment process in real time, and can calculate the change of the pollution concentration of the contaminated sediment in real time according to the change of the water content and the conductivity, thereby solving the problems that the traditional test method needs sampling detection, the steps are complicated and the result cannot be obtained in real time, and the pollution concentration and the water content do not need to be measured by special equipment, thereby saving the cost; the pollutants in the contaminated sediment are discharged into the water collecting assembly with the sewage, thereby ensuring the decontamination effect; the contaminated sediment in the sludge inlet assembly is sucked into the vacuum container through the negative pressure assembly, thereby ensuring the uniformity of the contaminated sediment; with the test proceeding, the vacuum container compresses the contaminated sediment, thereby accelerating the vacuum electro-osmosis dewatering and decontamination process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of soil engineering silt solidification, and particularly relates to a vacuum electro-osmotic solidification and remediation integrated test system and method for contaminated sediment. BACKGROUND

[0002] The solidification and remediation of contaminated sediment is one of the important challenges in the field of environmental protection, especially the sediment containing high-concentration heavy metal pollutants. Vacuum electro-osmosis is a technology that can simultaneously realize the solidification and remediation of contaminated sediment. Through an electric field and vacuum negative pressure, the removal of water in the sediment can be realized while maintaining the stability of the sediment structure, and the electric field can also drive the migration of heavy metal ions to further remediate the contaminated sediment.

[0003] The mechanism of vacuum electro-osmosis technology for solidifying and remediating contaminated sediment is explored through physical model tests, which is conducive to the popularization and wide application of vacuum electro-osmosis technology in the engineering practice of contaminated sediment. However, the existing vacuum electro-osmosis test method has many defects, such as: single focus on the solidification and dehydration of sediment by vacuum electro-osmosis, without considering decontamination; relying on sampling to detect the concentration of pollutants and the moisture content, the process is cumbersome and inconvenient; the laboratory measurement of the concentration of pollutants and the moisture content requires special equipment, which is costly and cannot reflect the decontamination effect in real time, making it difficult to accurately control the remediation process.

[0004] Therefore, there is an urgent need for a vacuum electro-osmosis solidification and remediation integrated test system and method for contaminated sediment. SUMMARY

[0005] The purpose of the present application is to provide a vacuum electro-osmosis solidification and remediation integrated test system and method for contaminated sediment to solve the above problems.

[0006] To achieve the above purpose, the present application provides the following solutions:

[0007] A vacuum electro-osmosis solidification and remediation integrated test system for contaminated sediment, comprising:

[0008] A vacuum container for containing contaminated sediment;

[0009] An electro-osmosis assembly penetrating into the vacuum container, the electro-osmosis assembly being embedded in the contaminated sediment;

[0010] A monitoring assembly penetrating into the vacuum container, the monitoring assembly being embedded in the contaminated sediment;

[0011] A negative pressure assembly in communication with one side of the vacuum container, the communication between the negative pressure assembly and the vacuum container being located at the upper part of the vacuum container;

[0012] A water collection assembly in communication between the negative pressure assembly and the vacuum container, an electronic scale being provided below the water collection assembly;

[0013] A sludge inlet assembly is in communication with a side of the vacuum container away from the negative pressure assembly, and a communication position of the sludge inlet assembly with the vacuum container is located at an upper portion of the vacuum container, and the contaminated sludge is placed in the sludge inlet assembly.

[0014] Preferably, the vacuum container comprises:

[0015] A model box container, a sealing cover is detachably connected at an open top end of the model box container, and a left circular opening and a right circular opening are respectively formed in opposite side walls of the model box container, and the left circular opening and the right circular opening are both located at an upper portion of the model box container.

[0016] A transparent vacuum film is arranged in the model box container, and a left sleeve and a right sleeve are respectively in communication with opposite side walls of the transparent vacuum film, and the left sleeve and the right sleeve are both located at an upper portion of the transparent vacuum film, the left sleeve penetrates out of the left circular opening and is in communication with the negative pressure assembly, geotextile is arranged in the left sleeve, the right sleeve penetrates out of the right circular opening and is in communication with the sludge inlet assembly, and a left hole and a right hole are formed at a top end of the transparent vacuum film.

[0017] Preferably, the electro-osmosis assembly comprises:

[0018] A first EKG drainage plate is arranged in the left hole, and the first EKG drainage plate is vertically buried in the contaminated sludge.

[0019] A second EKG drainage plate is arranged in the right hole, and the second EKG drainage plate is vertically buried in the contaminated sludge.

[0020] A direct current power supply is electrically connected to the first EKG drainage plate and the second EKG drainage plate through two poles and wires.

[0021] Preferably, the monitoring assembly comprises:

[0022] A soil moisture sensor is buried in the contaminated sludge.

[0023] An electrical conductivity sensor is buried in the contaminated sludge.

[0024] A reader is electrically connected to the soil moisture sensor and the electrical conductivity sensor through another wire.

[0025] Preferably, the water collecting assembly comprises:

[0026] A water collecting bottle is provided with a left circular outlet and a right circular inlet at a top end, the water collecting bottle is placed above the electronic scale, and the right circular inlet is in communication with the left sleeve through a sewage pipeline.

[0027] Preferably, the negative pressure assembly comprises:

[0028] a vacuum pump, which is communicated with the left circular outlet through a vacuum pipeline.

[0029] Preferably, the mud inlet assembly comprises:

[0030] a mud storage pool, in which the contaminated sediment is placed;

[0031] a mud inlet pipeline, one end of which is communicated with the right sleeve, and the other end of which extends into the contaminated sediment in the mud storage pool;

[0032] a mud inlet valve, which is arranged on the mud inlet pipeline.

[0033] An integrated test method for vacuum electro-osmotic solidification and remediation of contaminated sediment, based on the integrated test system for vacuum electro-osmotic solidification and remediation of contaminated sediment, the test steps are as follows:

[0034] Start the negative pressure assembly to make the vacuum container in a negative pressure state, and the contaminated sediment in the mud inlet assembly is sucked into the vacuum container; when the top surface of the contaminated sediment reaches a set position, the negative pressure assembly is stopped, and the electro-osmosis assembly and the monitoring assembly are buried in the contaminated sediment, the mud inlet assembly is cut off, the negative pressure assembly, the electro-osmosis assembly and the monitoring assembly are started, the data change curves of the water content and the conductivity of the contaminated sediment are recorded, the mass change of the sewage in the water collection assembly is recorded, and the test is stopped when the set value is reached; the pollution concentration change curve of the contaminated sediment is calculated according to the data change curves of the water content and the conductivity of the contaminated sediment.

[0035] Preferably, the pollution concentration change curve calculation formula of the contaminated sediment is:

[0036] C=aσ+bω+c(S);

[0037] Wherein, σ is the conductivity of the contaminated sediment, unit S / m;

[0038] w is the water content of the contaminated sediment;

[0039] a, b and c are related parameters, and the determination steps are as follows:

[0040] Take an equal amount of the contaminated sediment to be treated in the mud inlet assembly into three beakers; add different concentrations of pollutants into two of the beakers, and respectively measure the pollution concentration, the conductivity and the water content of the contaminated sediment in the three beakers; and put the measured data into formula (S) to determine the values of a, b and c.

[0041] Compared with the prior art, the present application has the following advantages and technical effects:

[0042] In the present application, by burying the monitoring assembly in the contaminated sediment, the change of the water content and the conductivity of the contaminated sediment during the electro-osmotic treatment process can be monitored in real time, and the change of the pollution concentration of the contaminated sediment can be calculated in real time according to the change of the water content and the conductivity, thereby solving the problems that the traditional test method needs sampling detection, the steps are complicated and the results cannot be obtained in real time, and the pollution concentration and the water content do not need to be measured by special equipment, thereby saving the cost; the pollutants in the contaminated sediment are discharged into the water collecting assembly with the sewage, thereby ensuring the decontamination effect; the contaminated sediment in the mud inlet assembly is sucked into the vacuum container through the negative pressure assembly, thereby reducing the contact between the contaminated sediment and other equipment, avoiding the contamination of other pollutants in the contaminated sediment, affecting the accuracy of the test, and ensuring the uniformity of the contaminated sediment; with the progress of the test, the vacuum container compresses the contaminated sediment, thereby accelerating the vacuum electro-osmosis dewatering and decontamination process. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings:

[0044] Figure 1 It is a schematic diagram of the test system of the present application;

[0045] Figure 2 It is a structural schematic diagram of the model box container in the present application;

[0046] Figure 3 It is a structural schematic diagram of the transparent vacuum film in the present application;

[0047] Figure 4 It is a water content change curve of the contaminated sediment in the present application;

[0048] Figure 5 It is a conductivity change curve of the contaminated sediment in the present application;

[0049] Figure 6 It is a pollution concentration change curve of the contaminated sediment in the present application;

[0050] Wherein, 1, model box container; 2, sealing cover; 3, left circular opening; 4, right circular opening; 5, geotextile; 6, small hole; 7, mud inlet pipeline; 8, mud inlet valve; 9, contaminated sediment; 10, sediment storage tank; 11, vacuum pump; 12, water collection bottle; 13, sewage pipeline; 14, transparent vacuum film; 15, left circular outlet; 16, right circular inlet; 17, vacuum pipeline; 18, left sleeve; 19, right sleeve; 20, left hole; 21, right hole; 22, self-locking cable tie; 23, first EKG drain plate; 24, second EKG drain plate; 25, wire; 26, direct current power supply; 27, soil moisture sensor; 28, conductivity sensor; 29, electronic scale; 30, reader. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0052] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0053] Reference Figures 1 to 3 The present application discloses a vacuum electro-osmosis solidification and repair of contaminated sediment integrated test system, comprising:

[0054] The vacuum container is used for containing the contaminated sediment 9.

[0055] The electro-osmosis assembly penetrates into the vacuum container, and is buried in the contaminated sediment 9.

[0056] The monitoring assembly penetrates into the vacuum container, and is buried in the contaminated sediment 9.

[0057] The negative pressure assembly is communicated with one side of the vacuum container, and the communication part of the negative pressure assembly and the vacuum container is located at the upper part of the vacuum container.

[0058] The water collection assembly is communicated between the negative pressure assembly and the vacuum container, and the electronic scale 29 is arranged below the water collection assembly.

[0059] The mud inlet assembly is communicated with the side of the vacuum container away from the negative pressure assembly, and the communication part of the mud inlet assembly and the vacuum container is located at the upper part of the vacuum container, and the contaminated sediment 9 is placed in the mud inlet assembly.

[0060] Further optimization scheme, the vacuum container comprises:

[0061] The model box container 1 is detachably connected with a sealing cover 2 at the top end opening of the model box container 1, and a left circular opening 3 and a right circular opening 4 are respectively arranged on the opposite two side walls of the model box container 1, and the left circular opening 3 and the right circular opening 4 are both located at the upper part of the model box container 1.

[0062] The transparent vacuum film 14 is arranged in the model box container 1, and a left sleeve 18 and a right sleeve 19 are respectively arranged on the opposite two side walls of the transparent vacuum film 14, and the left sleeve 18 and the right sleeve 19 are both located at the upper part of the transparent vacuum film 14, the left sleeve 18 penetrates out of the left circular opening 3 and is communicated with the negative pressure assembly, the geotextile 5 is arranged in the left sleeve 18, the right sleeve 19 penetrates out of the right circular opening 4 and is communicated with the mud inlet assembly, and a left hole 20 and a right hole 21 are arranged at the top end of the transparent vacuum film 14.

[0063] One end of the left sleeve 18 penetrates into the left circular opening 3, and then the left sleeve 18 and the left circular opening 3 are tightly tied through the self-locking cable tie 22, so as to ensure the firmness and sealing performance of the connection; one end of the right sleeve 19 penetrates into the right circular opening 4, and then the right sleeve 19 and the right circular opening 4 are tightly tied through the self-locking cable tie 22, so as to ensure the firmness and sealing performance of the connection.

[0064] Further optimization scheme, the electro-osmosis assembly comprises:

[0065] The first EKG drainage plate 23 is arranged in the left hole 20, and the first EKG drainage plate 23 is vertically buried in the contaminated bottom mud 9;

[0066] The second EKG drainage plate 24 is arranged in the right hole 21, and the second EKG drainage plate 24 is vertically buried in the contaminated bottom mud 9;

[0067] The direct current power supply 26 is electrically connected with the first EKG drainage plate 23 and the second EKG drainage plate 24 through the two poles of the lead 25.

[0068] Further optimization scheme, the monitoring assembly comprises:

[0069] The soil moisture sensor 27 is buried in the contaminated bottom mud 9;

[0070] The conductivity sensor 28 is buried in the contaminated bottom mud 9;

[0071] The reader 30 is electrically connected with the soil moisture sensor 27 and the conductivity sensor 28 through the other lead 25.

[0072] Further optimization scheme, the water collecting assembly comprises:

[0073] The water collecting bottle 12 is placed above the electronic scale 29, and the right circular inlet 16 is communicated with the left sleeve 18 through the sewage pipeline 13.

[0074] Further optimization scheme, the negative pressure assembly comprises:

[0075] The vacuum pump 11 is communicated with the left circular outlet 15 through the vacuum pipeline 17.

[0076] Further optimization scheme, the mud inlet assembly comprises:

[0077] The contaminated sediment 9 is placed in the sludge storage tank 10.

[0078] The mud inlet pipeline 7 is communicated with the right sleeve 19 at one end and extends into the contaminated sediment 9 in the sludge storage tank 10 at the other end.

[0079] The mud inlet valve 8 is arranged on the mud inlet pipeline 7.

[0080] The left sleeve 18 is communicated with the sewage pipeline 13 at the end away from the transparent vacuum film 14 and the right sleeve 19 is communicated with the mud inlet pipeline 7 at the end away from the transparent vacuum film 14.

[0081] A vacuum electro-osmosis solidification and repair integrated test method for contaminated sediment is based on a vacuum electro-osmosis solidification and repair integrated test system for contaminated sediment, and the test steps are as follows:

[0082] The negative pressure assembly is started to make the vacuum container in a negative pressure state, the contaminated sediment 9 in the mud inlet assembly is sucked into the vacuum container, when the top surface of the contaminated sediment 9 reaches the set position, the negative pressure assembly is stopped, the electro-osmosis assembly and the monitoring assembly are buried in the contaminated sediment 9, the mud inlet assembly is cut off, the negative pressure assembly, the electro-osmosis assembly and the monitoring assembly are started, the data change curve of the water content and the conductivity of the contaminated sediment 9 is recorded, the mass change of the sewage in the water collecting assembly is recorded, when the set value is reached, the test is stopped, and the pollution concentration change curve of the contaminated sediment 9 is calculated according to the data change curve of the water content and the conductivity of the contaminated sediment 9.

[0083] Further optimization scheme, the pollution concentration change curve of the contaminated sediment 9 is calculated by the following formula:

[0084] C=aσ+bω+c(S);

[0085] Wherein, σ is the conductivity of the contaminated sediment 9, unit S / m;

[0086] W is the water content of the contaminated sediment 9;

[0087] a, b, and c are related parameters, and the determination steps are as follows:

[0088] Take three portions of contaminated sediment 9 to be treated in the dredging assembly and put them into three beakers respectively; add different concentrations of pollutants to two of the beakers, and measure the pollution concentration, conductivity and water content of the contaminated sediment 9 in the three beakers respectively, and put the measured data into formula (S) to determine the values of a, b and c.

[0089] One specific example:

[0090] Take the contaminated sediment 9 from a river in Nanjing and put it into the sediment storage tank 10. The water content of the contaminated sediment 9 is measured to be 75%, and the pollutant in the contaminated sediment 9 is copper ions, with an initial concentration of 1230 mg / kg;

[0091] Put the transparent vacuum film 14 into the model box container 1, pass the left sleeve 18 through the left circular opening 3 and into the transparent vacuum film 14, pass the right sleeve 19 through the right circular opening 4 and into the transparent vacuum film 14, and tighten the connection between the transparent vacuum film 14 and the left sleeve 18 and the right sleeve 19 with the self-locking cable ties 22 to ensure the firmness and sealing of the connection. The left sleeve 18 and the right sleeve 19 are of the same height, then connect one end of the mud inlet pipe 7 to the end of the right sleeve 19 outside the model box container 1 (connection methods include but are not limited to flange connection, threaded connection), the other end of the mud inlet pipe 7 extends into the contaminated sediment 9 in the sediment storage tank 10, and the mud inlet valve 8 is provided on the mud inlet pipe 7 to control the flow rate of the contaminated sediment 9; connect one end of the sewage pipe 13 to the end of the left sleeve 18 outside the model box container 1 (connection methods include but are not limited to flange connection, threaded connection), and the geotextile 5 is provided in the left sleeve 18 to prevent the sediment from clogging the sewage pipe 13 and ensure the smooth discharge of sewage to the collection bottle 12, connect the other end of the sewage pipe 13 to the right circular inlet 16 of the collection bottle 12, connect the left circular outlet 15 of the collection bottle 12 to one end of the vacuum pipe 17, and connect the other end of the vacuum pipe 17 to the vacuum pump 11. An electronic scale 29 is provided below the collection bottle 12;

[0092] Fix the sealing cover 2 to the top opening of the model box container 1, block the multiple small holes 6 on the sealing cover 2 with the wire 25, open the mud inlet valve 8, start the vacuum pump 11, gradually increase the negative pressure, and finally control the vacuum negative pressure at-80 kPa, so that the flowing contaminated sediment 9 flows into the transparent vacuum film 14 through the mud inlet pipe 7, and the mud inlet speed and mud filling of the contaminated sediment 9 are observed to ensure uniform filling. When the top surface of the contaminated sediment 9 approaches the low end of the left / right sleeve 18 / 19, the vacuum pump 11 stops working.

[0093] Open the sealing cover 2, insert the soil moisture sensor 27 and the conductivity sensor 28 into the contaminated sediment 9 in the transparent vacuum film 14 through the left hole 20 and the right hole 21 respectively, and connect the lead 25 of the soil moisture sensor 27 and the conductivity sensor 28 to the reading instrument 30 through the small hole 6 on the sealing cover 2; insert the first EKG drain plate 23 and the second EKG drain plate 24 into the contaminated sediment 9 in the transparent vacuum film 14 through the left hole 20 and the right hole 21 respectively, and electrically connect the lead 25 of the first EKG drain plate 23 to the cathode of the direct current power supply 26 through the small hole 6, and electrically connect the lead 25 of the second EKG drain plate 24 to the anode of the direct current power supply 26 through the small hole 6, and close the sealing cover 2;

[0094] Close the sediment inlet valve 8, start the vacuum pump 11 and the direct current power supply 26, control the vacuum negative pressure at-80 kPa, and set the electric potential gradient at 1 V / cm, under the action of the vacuum negative pressure and the electric field, the water and the heavy metal pollution ions in the contaminated sediment in the transparent vacuum film 14 migrate from the second EKG drain plate 24 to the first EKG drain plate 23, at the same time, the transparent vacuum film 14 further compresses the contaminated sediment, accelerates the vacuum electro-osmotic dewatering and decontamination process, in this process, the voltage, current and vacuum pressure and water output are checked regularly to ensure the stability and effect of the treatment process, at the same time, the change of the water content and the conductivity in the contaminated sediment are recorded by the reading instrument 30; the sewage containing copper ions enters the water collecting bottle 12 through the sewage pipeline 13, the geotextile 5 prevents the sediment from blocking the sewage pipeline 13, ensures the smooth discharge of the sewage to the water collecting bottle 12, and records the mass of the sewage in the water collecting bottle 12 by the electronic scale 29, when the hourly increment of the sewage in the water collecting bottle 12 is less than 5% of the existing sewage, it is considered that the treatment process is basically completed, the vacuum pump 11 and the direct current power supply 26 are turned off, the sealing cover 2 is opened, the first EKG drain plate 23, the second EKG drain plate 24, the soil moisture sensor 27 and the conductivity sensor 28 are taken out, the self-locking cable tie 22 is removed, the gap between the transparent vacuum film 14 and the left sleeve 18 and the right sleeve 19 is tightened, to prevent the contaminated sediment 9 from overflowing, the transparent vacuum film 14 after being tightened and filled with the sediment sample is taken out from the model box container 1, and is moved to the stacking area or the transport vehicle, for subsequent transfer or resource utilization;

[0095] The change curve of the water content of the contaminated sediment 9 is shown in Figure 4 The change curve of the conductivity of the contaminated sediment 9 is shown in Figure 5

[0096] ​Three equal amounts of the contaminated sediment 9 in the sediment storage tank 10 are taken out and put into three beakers, respectively, and the beakers are labeled as D, E and F. Equal amounts of copper nitrate with different concentrations are added into the beaker D and the beaker E, respectively. The soil moisture sensor 27 and the conductivity sensor 28 are put into each beaker. The water content w of the contaminated sediment 9 in the beaker D is 75%, and the conductivity σ is 828 mg / kg. The water content w of the contaminated sediment 9 in the beaker E is 75%, and the conductivity σ is 1092 mg / kg. The water content w of the contaminated sediment 9 in the beaker F is 75%, and the conductivity σ is 1245 mg / kg. The three groups of data are substituted into the formula (S) to obtain a = 0.98, b = 24.60 and c = 433.57. The a, b and c are substituted into the formula (S) to calculate the pollutant concentration change curve of the contaminated sediment 9 in the vacuum electro-osmosis test process.

[0097] The pollutant concentration change curve of the contaminated sediment 9 is shown in FIG. 6. Figure 6

[0098] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0099] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.​

Claims

1. An integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment, characterized by, The utility model relates to a kind of vacuum container, for containing contaminated sediment (9);Electroosmosis component, into the vacuum container, the electroosmosis component is embedded in the contaminated sediment (9);Monitoring component, into the vacuum container, the monitoring component is embedded in the contaminated sediment (9);Negative pressure component, with the side of the vacuum container communication, the negative pressure component with the communication of the vacuum container is located in the upper portion of the vacuum container;Water collection component, communication between the negative pressure component and the vacuum container, electronic scale (29) is provided below the water collection component;Mud inlet component, with the side of the vacuum container away from the negative pressure component communication, the mud inlet component with the communication of the vacuum container is located in the upper portion of the vacuum container, and the contaminated sediment (9) is placed in the mud inlet component;The vacuum container includes: model box container (1), the top of the model box container (1) is detachably connected with sealing cover (2), left side circular opening (3) and right side circular opening (4) are respectively arranged on the opposite two side walls of the model box container (1), and the left side circular opening (3) and the right side circular opening (4) are located in the upper portion of the model box container (1);Transparent vacuum film (14) is arranged in the model box container (1), left sleeve (18) and right sleeve (19) are respectively communicated on the opposite two side walls of the transparent vacuum film (14), the left sleeve (18) and the right sleeve (19) are located in the upper portion of the transparent vacuum film (14), the left sleeve (18) is out of the left side circular opening (3) and is communicated with the negative pressure component, geotextile (5) is arranged in the left sleeve (18), the right sleeve (19) is out of the right side circular opening (4) and is communicated with the mud inlet component, left hole (20) and right hole (21) are formed in the top of the transparent vacuum film (14). The electroosmosis component includes: first EKG drainage plate (23), is arranged in the left hole (20), and the first EKG drainage plate (23) is vertically embedded in the contaminated sediment (9);Second EKG drainage plate (24), is arranged in the right hole (21), and the second EKG drainage plate (24) is vertically embedded in the contaminated sediment (9);Direct-current power supply (26), two poles are electrically connected with the first EKG drainage plate (23) and the second EKG drainage plate (24) by wire (25). The monitoring component includes: soil moisture sensor (27), is embedded in the contaminated sediment (9);Electric conductivity sensor (28), is embedded in the contaminated sediment (9);Readout instrument (30) is electrically connected with the soil moisture sensor (27) and the electric conductivity sensor (28) by another wire (25). The water collection component includes: ​ ​ ​ ​ ​ ​ 2. The integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 1, wherein, ​ ​ ​ ​ 3. The integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 2, wherein, ​ ​ ​ ​ 4. The integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 1, wherein, ​ The water collecting bottle (12) is placed above the electronic scale (29), and the right circular inlet (16) is communicated with the left sleeve (18) through a sewage pipeline (13).

5. The integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 4, wherein, The negative pressure assembly comprises: The vacuum pump (11) is communicated with the left circular outlet (15) through a vacuum pipeline (17).

6. The integrated test system for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 1, wherein, The mud feeding assembly comprises: The contaminated bottom mud (9) is placed in the mud storage tank (10); The mud feeding pipeline (7) is communicated with the right sleeve (19) at one end and extends into the contaminated bottom mud (9) in the mud storage tank (10) at the other end; The mud feeding valve (8) is arranged on the mud feeding pipeline (7).

7. A vacuum electro-osmotic solidification integrated test method for repairing contaminated sediment, based on the vacuum electro-osmotic solidification integrated test system of any one of claims 1-6, characterized in that, The test steps are as follows: Start the negative pressure assembly to make the vacuum container in a negative pressure state, and the contaminated bottom mud (9) in the mud feeding assembly is sucked into the vacuum container, when the top surface of the contaminated bottom mud (9) reaches the set position, the negative pressure assembly stops, the electro-osmosis assembly and the monitoring assembly are buried in the contaminated bottom mud (9), the mud feeding assembly is cut off, the negative pressure assembly, the electro-osmosis assembly and the monitoring assembly are started, the data change curve of the water content and the conductivity of the contaminated bottom mud (9) is recorded, the mass change of the sewage in the water collecting assembly is recorded, and the test is stopped when the set value is reached. The pollution concentration change curve of the contaminated bottom mud (9) is calculated according to the data change curve of the water content and the conductivity of the contaminated bottom mud (9).

8. The integrated test method for vacuum electro-osmotic solidification remediation of contaminated sediment according to claim 7, characterized in that, The pollution concentration change curve of the contaminated bottom mud (9) is calculated by the following formula: （S）； Wherein, σ is the conductivity of the contaminated bottom mud (9), the unit is S / m; w is the water content of the contaminated bottom mud (9); a, b, c are related parameters, and the determination steps are as follows: An equal amount of the contaminated bottom mud (9) to be treated in the mud feeding assembly is taken out and is respectively filled into three beakers; different concentrations of pollutants are added to two of the beakers, and the pollution concentration, the conductivity and the water content of the contaminated bottom mud (9) in the three beakers are respectively measured, and the measured data is substituted into formula (S) to determine the values of a, b and c.

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