Sludge resourceful treatment system of electroplating factory
By designing the sludge resource treatment system of electroplating plants, using dehydration, microwave digestion, extraction, electrolytic refining and other processes, the metals in the electroplating sludge are extracted and synthesized into lightweight building materials, solving the problems of secondary pollution of sludge and resource waste. , realize efficient resource reuse.
Patent Information
- Application Number
- CN202420685303.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The sludge in electroplating plants leads to secondary pollution and waste of valuable metal resources through direct landfill treatment, and has not achieved effective resource utilization.
A sludge resource treatment system was designed, including sludge pretreatment module, metal recovery module and lightweight building materials synthesis module. Through dehydration, microwave digestion, extraction, electrolytic refining, roasting, in-situ microwave synthesis and sponge sintering, etc. , extract the metal in the sludge and synthesize lightweight building materials to avoid secondary pollution caused by sludge and achieve resource reuse.
Effectively avoid secondary pollution caused by electroplating sludge, harming the environment, and extracting valuable metals in the sludge to synthesize lightweight building materials, achieving efficient reuse of resources, copper recovery rate reaches 85%, strontium titanate The yield is 80%, and the compressive strength of lightweight building materials reaches 25MPa.
Smart Images
Figure CN222159944U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electroplating plant sludge treatment, and in particular to a sludge resource treatment system for an electroplating plant. Background Art
[0002] The electroplating industry produces a large amount of heavy metal sludge, which not only contains toxic pollutants but also has low resource utilization rate.
[0003] At present, most electroplating plants use direct landfill to treat sludge, which not only easily causes secondary pollution and harms the environment, but also wastes valuable metals and other elements in the sludge, and fails to achieve effective resource utilization. Utility Model Content
[0004] In view of the fact that most existing electroplating plants use direct landfill to treat sludge, which is not only prone to secondary pollution and environmental damage, but also wastes valuable metals and other elements in the sludge and fails to achieve effective resource utilization, this application proposes a sludge resource treatment system for electroplating plants.
[0005] The system includes a sludge pretreatment module, a metal recovery module, and a lightweight building material synthesis module, wherein the input end of the sludge pretreatment module is connected to the sludge discharge port of the electroplating plant, the output end of the sludge pretreatment module is connected to the input end of the metal recovery module, the input end of the lightweight building material synthesis module is connected to the output end of the metal recovery module, and the output end of the lightweight building material synthesis module outputs lightweight building materials.
[0006] Optionally, the sludge pretreatment module includes a dehydration module and a microwave digestion module, wherein the input end of the dehydration module is connected to the sludge discharge port of the electroplating plant as the input end of the sludge pretreatment module, the output end of the dehydration module is connected to the input end of the microwave digestion module, and the output end of the microwave digestion module is connected to the input end of the metal recovery module as the output end of the sludge pretreatment module.
[0007] Optionally, the metal recovery module includes an extraction module and an electrolytic refining module, wherein the input end of the extraction module is connected to the output end of the sludge pretreatment module as the input end of the metal recovery module, the output end of the extraction module is connected to the input end of the electrolytic refining module, and the output end of the electrolytic refining module is connected to the input end of the lightweight building material synthesis module as the output end of the metal recovery module.
[0008] Optionally, the lightweight building material synthesis module includes a roasting module, an in-situ microwave synthesis module and a sponge sintering module, wherein the input end of the roasting module is connected to the output end of the metal recovery module as the input end of the lightweight building material synthesis module, the output end of the roasting module is connected to the input end of the in-situ microwave synthesis module, the output end of the in-situ microwave synthesis module is connected to the input end of the sponge sintering module, and the output end of the sponge sintering module serves as the output end of the lightweight building material synthesis module to output lightweight building materials.
[0009] Optionally, the system also includes a PLC, and the dehydration module is provided with a weight sensor and an electrically controlled opening and closing valve, wherein the weight sensor is used to detect the weight of the sludge input into the dehydration module, and the electrically controlled opening and closing valve is arranged in front of the input end of the dehydration module, wherein the weight sensor, the electrically controlled opening and closing valve and the dehydration module are respectively connected to the PLC, and the PLC is used to control the opening or closing of the electrically controlled opening and closing valve according to the weight of the sludge detected by the weight sensor, and control the dehydration module to dehydrate the sludge to obtain dehydrated sludge.
[0010] Optionally, the microwave digestion module includes a microwave digestion instrument, which is provided with a temperature sensor and a pressure sensor. The microwave digestion instrument, the first temperature sensor and the first pressure sensor are respectively connected to a PLC, and the PLC is also used to control the microwave digestion instrument according to the temperature and pressure of the microwave digestion instrument.
[0011] Optionally, the extraction module includes an extraction device, a first liquid level sensor, a first pH sensor and a second temperature sensor, and the electrolytic refining module includes an electrolytic cell, a second liquid level sensor, a second pH sensor and a third temperature sensor, wherein the extraction device, the first liquid level sensor, the first pH sensor, the second temperature sensor, the electrolytic cell, the second liquid level sensor, the second pH sensor and the third temperature sensor are respectively connected to the PLC, and the PLC is further used to control the operation of the extraction device according to the liquid level value, pH value and temperature value of the extraction device detected by the first liquid level sensor, the first pH sensor and the second temperature sensor, and to control the operation of the electrolytic cell according to the liquid level value, pH value and temperature value of the electrolytic cell detected by the second liquid level sensor, the second pH sensor and the third temperature sensor.
[0012] Optionally, the roasting module includes a roasting furnace, a fourth temperature sensor and a gas flow sensor, wherein the roasting furnace, the fourth temperature sensor and the gas flow sensor are respectively connected to the PLC, and the PLC is also used to control the operation of the roasting furnace according to the temperature value and the gas flow value detected by the fourth temperature sensor and the gas flow sensor.
[0013] Optionally, the in-situ microwave synthesis module includes a microwave thermal synthesis device, a fifth temperature sensor and a second pressure sensor, wherein the microwave thermal synthesis device, the fifth temperature sensor and the second pressure sensor are respectively connected to a PLC, and the PLC is also used to control the operation of the roasting furnace according to the temperature and pressure values detected by the fifth temperature sensor and the second pressure sensor.
[0014] Optionally, the sponge sintering module includes a sponge sintering device, a sixth temperature sensor and a third pressure sensor, wherein the sponge sintering device, the sixth temperature sensor and the third pressure sensor are respectively connected to a PLC, and the PLC is also used to control the operation of the sponge sintering device according to the temperature and pressure values detected by the sixth temperature sensor and the third pressure sensor.
[0015] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 1 ;
[0018] Figure 2 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 2 ;
[0019] Figure 3 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 3 . DETAILED DESCRIPTION
[0020] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.
[0021] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.
[0022] The present application relates to a sludge resource processing system for an electroplating plant. The sludge resource processing system for the electroplating plant can dehydrate and microwave digest the sludge through a sludge pretreatment module, decompose the metal in the sludge through a metal recovery module, and mix the residue obtained after the decomposition with a variety of other materials through a lightweight building material synthesis module to obtain lightweight building materials, thereby avoiding secondary pollution caused by electroplating sludge and harming the environment, and extracting valuable metals and other elements in the sludge and synthesizing lightweight building materials to achieve effective resource recycling.
[0023] See also Figure 1 , Figure 1 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 1 .like Figure 1 As shown, the sludge resource processing system of the electroplating plant includes: a sludge pretreatment module 101, a metal recovery module 102, and a lightweight building material synthesis module 103.
[0024] Among them, the input end of the sludge pretreatment module is connected to the sludge discharge port of the electroplating plant, the output end of the sludge pretreatment module is connected to the input end of the metal recovery module, so as to transmit the pretreated sludge to the metal recovery module, and the output end of the metal recovery module is connected to the input end of the lightweight building material synthesis module, so that after the metal recovery module separates the metal in the sludge, the residual residue is transmitted to the lightweight building material synthesis module, and the output end of the lightweight building material synthesis module outputs lightweight building materials.
[0025] Here, the sludge pretreatment module can dehydrate the sludge, digest it with microwaves, and separate the liquid and solid. The metal recovery module can recover metals such as copper and nickel through solvent extraction and electrolytic refining. The lightweight building material synthesis module can roast and thermally synthesize the slag, and mix the roasting product, thermal synthesis product and cement to obtain lightweight building materials.
[0026] Wherein, the sludge pretreatment module includes a dehydration module and a microwave digestion module.
[0027] Among them, the input end of the dehydration module is connected to the sludge discharge port of the electroplating plant as the input end of the sludge pretreatment module, the output end of the dehydration module is connected to the input end of the microwave digestion module, and the output end of the microwave digestion module is connected to the input end of the metal recovery module as the output end of the sludge pretreatment module.
[0028] Among them, the metal recovery module includes an extraction module and an electrolytic refining module.
[0029] Among them, the input end of the extraction module is connected to the output end of the sludge pretreatment module as the input end of the metal recovery module, the output end of the extraction module is connected to the input end of the electrolytic refining module, and the output end of the electrolytic refining module is connected to the input end of the lightweight building material synthesis module as the output end of the metal recovery module.
[0030] Among them, the lightweight building materials synthesis module includes a roasting module, an in-situ microwave synthesis module and a sponge sintering module.
[0031] Among them, the input end of the roasting module is connected to the output end of the metal recovery module as the input end of the lightweight building material synthesis module, the output end of the roasting module is connected to the input end of the in-situ microwave synthesis module, the output end of the in-situ microwave synthesis module is connected to the input end of the sponge sintering module, and the output end of the sponge sintering module serves as the output end of the lightweight building material synthesis module to output lightweight building materials.
[0032] For example, see Figure 2 , Figure 2 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 2 .like Figure 2 As shown, the sludge resource processing system of the electroplating plant includes: a dehydration module 201, a microwave digestion module 202, an extraction module 203, an electrolytic refining module 204, a roasting module 205, an in-situ microwave synthesis module 206 and a sponge sintering module 207.
[0033] Among them, the dehydration module can use a centrifugal dehydrator or a filter press for dehydration. A weight sensor can be installed on the equipment, and the centrifugal dehydrator or filter press can be used for dehydration by PLC. When the sludge weight reaches the set value, the PLC can automatically stop the transmission and start the dehydration operation.
[0034] Among them, the microwave digestion module requires the use of a microwave digestion instrument. A temperature sensor and a pressure sensor can be set in the microwave digestion instrument, and the temperature and pressure can be monitored in real time through the PLC to control the microwave digestion instrument.
[0035] Among them, the extraction module and the electrolytic refining module can use corresponding extraction equipment and electrolytic cells, and liquid level sensors, temperature sensors and pH sensors can be set on the extraction equipment and electrolytic cells, and the liquid level, temperature and pH value can be monitored and controlled through PLC to realize automatic operation.
[0036] Among them, the roasting module requires the use of a roasting furnace, and a temperature sensor and a gas flow sensor can be set in the roasting furnace, and the temperature and gas flow can be monitored and the roasting furnace can be controlled through PLC.
[0037] Among them, the in-situ microwave synthesis module and the sponge sintering module can set temperature sensors and pressure sensors in the in-situ microwave synthesis equipment and the sponge sintering equipment, monitor the temperature and pressure through PLC, and control the in-situ microwave synthesis equipment and the sponge sintering equipment.
[0038] Exemplarily, electroplating sludge is dehydrated and microwave digested, and then H2SO4 eluent is used to extract and electrolyze the metal in a metal recovery module using butyl phosphoric acid, and the copper recovery rate reaches 85%.
[0039] For example, after the slag is calcined, TEOS (tetraethyl orthosilicate) and FeCl3 are added during in-situ microwave synthesis, and the reaction is carried out at 150 degrees Celsius for 0.5 hours, and a strontium titanate yield of more than 80% can be obtained.
[0040] For example, the calcined residue is mixed with strontium titanate and cement in a sponge sintering module in a certain proportion and then subjected to sponge sintering to synthesize a lightweight building material with a compressive strength of 25 MPa.
[0041] Optionally, the system further comprises a PLC, the dehydration module is provided with a weight sensor and an electrically controlled on-off valve, the weight sensor is used to detect the weight of the sludge input into the dehydration module, and the electrically controlled on-off valve is arranged in front of the input end of the dehydration module.
[0042] Wherein, the weight sensor, the electric-controlled opening and closing valve and the dehydration module are respectively connected to the PLC.
[0043] The PLC is used to control the opening or closing of the electric control on-off valve according to the weight of the sludge detected by the weight sensor, and to control the dehydration module to dehydrate the sludge to obtain the dehydrated sludge.
[0044] Wherein, the microwave digestion module includes a microwave digestion instrument, on which a temperature sensor and a pressure sensor are provided. The microwave digestion instrument, the first temperature sensor and the first pressure sensor are respectively connected to the PLC, and the PLC is also used to control the microwave digestion instrument according to the temperature and pressure of the microwave digestion instrument.
[0045] The extraction module includes an extraction device, a first liquid level sensor, a first pH sensor and a second temperature sensor, and the electrolytic refining module includes an electrolytic cell, a second liquid level sensor, a second pH sensor and a third temperature sensor.
[0046] Wherein, the extraction equipment, the first liquid level sensor, the first pH sensor, the second temperature sensor, the electrolytic cell, the second liquid level sensor, the second pH sensor and the third temperature sensor are respectively connected to the PLC.
[0047] The PLC is also used to control the operation of the extraction equipment according to the liquid level value, pH value and temperature value of the extraction equipment detected by the first liquid level sensor, the first pH sensor and the second temperature sensor, and is used to control the operation of the electrolytic cell according to the liquid level value, pH value and temperature value of the electrolytic cell detected by the second liquid level sensor, the second pH sensor and the third temperature sensor.
[0048] The roasting module includes a roasting furnace, a fourth temperature sensor and a gas flow sensor.
[0049] The roasting furnace, the fourth temperature sensor and the gas flow sensor are connected to the PLC respectively, and the PLC is also used to control the operation of the roasting furnace according to the temperature value and the gas flow value detected by the fourth temperature sensor and the gas flow sensor.
[0050] Among them, the in-situ microwave synthesis module includes a microwave thermal synthesis device, a fifth temperature sensor and a second pressure sensor.
[0051] The microwave thermal synthesis equipment, the fifth temperature sensor and the second pressure sensor are respectively connected to the PLC, and the PLC is also used to control the operation of the roasting furnace according to the temperature and pressure values detected by the fifth temperature sensor and the second pressure sensor.
[0052] The sponge sintering module includes a sponge sintering device, a sixth temperature sensor and a third pressure sensor.
[0053] The sponge sintering equipment, the sixth temperature sensor and the third pressure sensor are respectively connected to the PLC, and the PLC is also used to control the operation of the sponge sintering equipment according to the temperature value and pressure value detected by the sixth temperature sensor and the third pressure sensor.
[0054] For example, see Figure 3 , Figure 3 Schematic diagram showing the sludge resource treatment system of the electroplating plant Figure 3 .like Figure 3As shown in the figure, the sludge resource processing system of the electroplating plant includes: a dehydration module 201, a microwave digestion module 202, an extraction module 203, an electrolytic refining module 204, a roasting module 205, an in-situ microwave synthesis module 206, a sponge sintering module 207 and a PLC301.
[0055] The connection relationship and function between the dehydration module 201, the microwave digestion module 202, the extraction module 203, the electrolytic refining module 204, the roasting module 205, the in-situ microwave synthesis module 206, and the sponge sintering module 207 are as follows: Figure 2 The connection relationship and function among the dehydration module 201, microwave digestion module 202, extraction module 203, electrolytic refining module 204, roasting module 205, in-situ microwave synthesis module 206 and sponge sintering module 207 are the same and will not be repeated here.
[0056] Specifically, the dehydration module is provided with a weight sensor (not shown in the figure) and an electrically controlled opening and closing valve (not shown in the figure), the weight sensor is used to detect the weight of the sludge input into the dehydration module, and the electrically controlled opening and closing valve is arranged in front of the input end of the dehydration module.
[0057] Wherein, the weight sensor (not shown in the figure), the electric control opening and closing valve (not shown in the figure) and the dehydration module are respectively connected to the PLC.
[0058] The PLC is used to control the opening or closing of the electric control on-off valve according to the weight of the sludge detected by the weight sensor, and to control the dehydration module to dehydrate the sludge to obtain the dehydrated sludge.
[0059] Specifically, the microwave digestion module includes a microwave digestion instrument (not shown in the figure), on which a temperature sensor (not shown in the figure) and a pressure sensor (not shown in the figure) are provided. The microwave digestion instrument, the first temperature sensor and the first pressure sensor are respectively connected to a PLC, and the PLC is also used to control the microwave digestion instrument according to the temperature and pressure of the microwave digestion instrument.
[0060] Specifically, the extraction module includes an extraction device (not shown in the figure), a first liquid level sensor (not shown in the figure), a first pH sensor (not shown in the figure) and a second temperature sensor (not shown in the figure), and the electrolytic refining module includes an electrolytic cell, a second liquid level sensor, a second pH sensor and a third temperature sensor.
[0061] Wherein, the extraction equipment, the first liquid level sensor, the first pH sensor, the second temperature sensor, the electrolytic cell, the second liquid level sensor, the second pH sensor and the third temperature sensor are respectively connected to the PLC.
[0062] The PLC is also used to control the operation of the extraction equipment according to the liquid level value, pH value and temperature value of the extraction equipment detected by the first liquid level sensor, the first pH sensor and the second temperature sensor, and is used to control the operation of the electrolytic cell according to the liquid level value, pH value and temperature value of the electrolytic cell detected by the second liquid level sensor, the second pH sensor and the third temperature sensor.
[0063] Specifically, the roasting module includes a roasting furnace (not shown in the figure), a fourth temperature sensor (not shown in the figure) and a gas flow sensor (not shown in the figure).
[0064] Wherein, the roasting furnace, the fourth temperature sensor and the gas flow sensor are respectively connected to the PLC.
[0065] The PLC is also used to control the operation of the roasting furnace according to the temperature value and the gas flow value detected by the fourth temperature sensor and the gas flow sensor.
[0066] Specifically, the in-situ microwave synthesis module includes a microwave thermal synthesis device (not shown in the figure), a fifth temperature sensor (not shown in the figure) and a second pressure sensor (not shown in the figure).
[0067] Wherein, the microwave thermal synthesis equipment, the fifth temperature sensor and the second pressure sensor are respectively connected to the PLC.
[0068] The PLC is also used to control the operation of the roasting furnace according to the temperature value and the pressure value detected by the fifth temperature sensor and the second pressure sensor.
[0069] Specifically, the sponge sintering module includes a sponge sintering device (not shown in the figure), a sixth temperature sensor (not shown in the figure) and a third pressure sensor (not shown in the figure).
[0070] Among them, the sponge sintering equipment, the sixth temperature sensor and the third pressure sensor are connected to the PLC respectively.
[0071] The PLC is also used to control the operation of the sponge sintering equipment according to the temperature value and the pressure value detected by the sixth temperature sensor and the third pressure sensor.
[0072] The sludge resource processing system for the electroplating plant proposed in the present application can dehydrate and microwave digest the sludge through the sludge pretreatment module, decompose the metal in the sludge through the metal recovery module, and mix the residue obtained after the decomposition with a variety of other materials through the lightweight building material synthesis module to obtain lightweight building materials, thereby avoiding secondary pollution caused by electroplating sludge and harming the environment, and extracting valuable metals and other elements from the sludge and synthesizing lightweight building materials to achieve effective resource recycling.
[0073] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0074] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0075] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0076] The above description is only a preferred embodiment of the present application, and does not limit the protection scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or direct / indirect application in other related technical fields are included in the protection scope of the present application.
Claims
1. A sludge resource treatment system for an electroplating plant, characterized in that: The system includes a sludge pretreatment module, a metal recovery module, and a lightweight building material synthesis module. Among them, the input end of the sludge pretreatment module is connected to the sludge discharge port of the electroplating plant, the output end of the sludge pretreatment module is connected to the input end of the metal recovery module, so as to transmit the pretreated sludge to the metal recovery module, and the output end of the metal recovery module is connected to the input end of the lightweight building material synthesis module, so that after the metal recovery module separates the metal in the sludge, the residual residue is transmitted to the lightweight building material synthesis module, and the output end of the lightweight building material synthesis module outputs lightweight building materials.
2. The system according to claim 1, characterized in that The sludge pretreatment module includes a dehydration module and a microwave digestion module. Among them, the input end of the dehydration module is connected to the sludge discharge port of the electroplating plant as the input end of the sludge pretreatment module, the output end of the dehydration module is connected to the input end of the microwave digestion module, and the output end of the microwave digestion module is connected to the input end of the metal recovery module as the output end of the sludge pretreatment module.
3. The system according to claim 2, characterized in that The metal recovery module includes extraction module and electrolytic refining module. Among them, the input end of the extraction module is connected to the output end of the sludge pretreatment module as the input end of the metal recovery module, the output end of the extraction module is connected to the input end of the electrolytic refining module, and the output end of the electrolytic refining module is connected to the input end of the lightweight building material synthesis module as the output end of the metal recovery module.
4. The system according to claim 3, characterized in that The lightweight building material synthesis module includes a roasting module, an in-situ microwave synthesis module and a sponge sintering module. Among them, the input end of the roasting module is connected to the output end of the metal recovery module as the input end of the lightweight building material synthesis module, the output end of the roasting module is connected to the input end of the in-situ microwave synthesis module, the output end of the in-situ microwave synthesis module is connected to the input end of the sponge sintering module, and the output end of the sponge sintering module serves as the output end of the lightweight building material synthesis module to output lightweight building materials.
5. The system according to claim 4, characterized in that The system also includes a PLC. The dehydration module is provided with a weight sensor and an electric-controlled on-off valve. The weight sensor is used to detect the weight of the sludge input into the dehydration module. The electric-controlled on-off valve is provided in front of the input end of the dehydration module. The weight sensor, the electric control opening and closing valve and the dehydration module are connected to the PLC respectively. The PLC is used to control the opening or closing of the electric control on-off valve according to the weight of the sludge detected by the weight sensor, and to control the dehydration module to dehydrate the sludge to obtain the dehydrated sludge.
6. The system according to claim 5, characterized in that The microwave digestion module includes a microwave digestion instrument, and the microwave digestion instrument is provided with a temperature sensor and a pressure sensor. The microwave digestion instrument, the first temperature sensor and the first pressure sensor are connected to the PLC respectively. The PLC is also used to control the microwave digestion instrument according to the temperature and pressure of the microwave digestion instrument.
7. The system according to claim 6, characterized in that The extraction module includes an extraction device, a first liquid level sensor, a first pH sensor, and a second temperature sensor, and the electrolytic refining module includes an electrolytic cell, a second liquid level sensor, a second pH sensor, and a third temperature sensor. The extraction equipment, the first liquid level sensor, the first PH sensor, the second temperature sensor, the electrolytic cell, the second liquid level sensor, the second PH sensor and the third temperature sensor are connected to the PLC respectively. The PLC is also used to control the operation of the extraction equipment according to the liquid level value, pH value and temperature value of the extraction equipment detected by the first liquid level sensor, the first pH sensor and the second temperature sensor, and is used to control the operation of the electrolytic cell according to the liquid level value, pH value and temperature value of the electrolytic cell detected by the second liquid level sensor, the second pH sensor and the third temperature sensor.
8. The system according to claim 7, characterized in that The roasting module includes a roasting furnace, a fourth temperature sensor and a gas flow sensor, The roasting furnace, the fourth temperature sensor and the gas flow sensor are connected to the PLC respectively. The PLC is also used to control the operation of the roasting furnace according to the temperature value and the gas flow value detected by the fourth temperature sensor and the gas flow sensor.
9. The system according to claim 8, characterized in that The in-situ microwave synthesis module includes a microwave thermal synthesis device, a fifth temperature sensor and a second pressure sensor, Wherein, the microwave thermal synthesis equipment, the fifth temperature sensor and the second pressure sensor are connected to the PLC respectively. The PLC is also used to control the operation of the roasting furnace according to the temperature value and the pressure value detected by the fifth temperature sensor and the second pressure sensor.
10. The system according to claim 9, characterized in that The sponge sintering module includes a sponge sintering device, a sixth temperature sensor and a third pressure sensor, Among them, the sponge sintering equipment, the sixth temperature sensor and the third pressure sensor are connected to the PLC respectively. The PLC is also used to control the operation of the sponge sintering equipment according to the temperature value and the pressure value detected by the sixth temperature sensor and the third pressure sensor.