Intelligent carbon source control system and method for sewage treatment

Abstract

The present invention relates to the technical field of sewage treatment, and specifically to an intelligent carbon source control system and method for sewage treatment, including a sewage treatment pool for accommodating sewage, a control module and a proportioning module, wherein a TN online automatic monitor for monitoring the TN value of sewage and a COD online automatic monitor for monitoring the COD value of sewage are installed in the sewage treatment pool; the control module is used to control the proportioning module to prepare the carbon source solution according to the TN value and COD value of the sewage, and includes a data processing unit for processing data and a communication unit for receiving and sending information; the proportioning module is used to take a specified volume of solid carbon source and mix it with water according to the instruction of the control module. The position of the supporting plate is controlled by a current control unit, thereby changing the volume of the loading hole, so that the total volume of multiple loading holes is equal to the volume of the required solid carbon source, and the accurate addition of the carbon source is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an intelligent carbon source control system and method for sewage treatment. Background Art

[0002] Wastewater treatment is very important for the protection of environmental ecology. Untreated sewage discharged into the wild environment will cause very serious damage to the natural environment. Therefore, there are strict treatment standards for the discharge of urban sewage, industrial sewage, etc., especially for sewage containing excessive nitrogen and phosphorus elements, it is necessary to remove phosphorus and nitrogen to meet the emission standards.

[0003] Adding carbon source to sewage is a common treatment method, which uses biological nitrification and denitrification to convert organic nitrogen and ammonia nitrogen in sewage into nitrogen gas for discharge, thereby achieving the purpose of denitrification. The Chinese invention patent with application number 202110087808.8 provides a carbon source dosing device and dosing method based on a biochemical treatment process, including a mixing structure, a detection structure and a control system; the mixing structure includes a stirring structure and a feeding structure, the stirring structure is used for mixing the carbon source and water, and the feeding structure is used to drop the required weight of carbon source into the mixing barrel within the interval time; the second flowmeter in the detection structure is used for the water volume per unit time, the TN online automatic monitor is used to detect the TN value of the water, and the COD online automatic monitor is used to detect the COD value of the water; the control system includes a processor and a controller, and the control system coordinates and controls the mixing system to mix and add carbon sources through the data measured by the detection structure.

[0004] However, the applicant has found that the prior art has at least the following problems: the comparative document allows the material to fall onto the support plate through the drop hole, and weighs the material on the support plate through the weighing sensor. When the material weight is sufficient, the drop hole is closed. However, when the weighing sensor senses material of sufficient weight, there is still a certain amount of falling material between the material hole and the support plate, and when the falling material falls on the support plate, it has a certain kinetic energy, which will also affect the accuracy of the weighing sensor. Therefore, its weight control of the solid carbon source has a large error, which will affect the ratio of the final carbon source solution. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an intelligent carbon source control system and method for sewage treatment to solve the problem of inaccurate ratio when mixing carbon sources.

[0006] Based on the above purpose, the present invention provides an intelligent carbon source control system for sewage treatment, including a sewage treatment tank for accommodating sewage, a control module and a proportioning module, wherein the sewage treatment tank is equipped with a TN online automatic monitor for monitoring the TN value of sewage and a COD online automatic monitor for monitoring the COD value of sewage;

[0007] The control module is used to control the proportioning module to prepare the carbon source solution according to the TN value and COD value of the sewage, and includes a data processing unit for processing data and a communication unit for receiving and sending information;

[0008] The proportioning module includes a tank body, a mixing tank is installed inside the tank body, a material box for placing a solid carbon source is arranged above the mixing tank, a bottom plate is arranged at the bottom of the material box, a loading ball is embedded on the bottom plate, a plurality of loading holes are opened on the loading ball for accommodating the solid carbon source, a supporting plate that moves up and down is installed in the loading hole, the supporting plate is connected to a current control unit for adjusting the position of the supporting plate in the loading hole, the loading ball is connected to a rotating shaft, the rotating shaft is powered by a rotating motor, the rotating motor is used to drive the loading ball to rotate, so that the part of the loading ball loaded with the material rotates from the material box to the tank body, a water inlet pipe is also installed on the tank body, a water inlet flowmeter is installed on the water inlet pipe, the mixing tank is connected to a derivation pipe for introducing the carbon source solution into a sewage pool, and a derivation flowmeter is installed on the derivation pipe.

[0009] Optionally, the current control unit includes a conductor rod slidably installed in the charging hole, a connecting column is connected between the conductor rod and the supporting plate, a reset spring is installed between the conductor rod and the bottom of the charging hole, a contact circuit is installed on the side wall of the charging hole, the contact circuit is electrically connected to the conductor rod, a uniform magnetic field is provided in the charging hole, and the magnetic flux lines of the uniform magnetic field are not parallel to the conductor rod, then the current control unit controls the conductor rod to pass current:

[0010] ;

[0011] Among them, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod is L, the elastic coefficient of the reset spring is k, the distance between the supporting plate and the loading hole opening in the initial state is a, the hole radius of the loading hole is r, and v is the volume of the material required for each loading hole.

[0012] Optionally, an electromagnet is provided on the inner wall of the loading hole for fixing the supporting plate after it reaches a set position.

[0013] Optionally, an upper protective shell is installed on the base plate, and a plurality of feed holes matching the loading holes are opened on the upper protective shell. The upper protective shell is directly mounted on the loading ball, and a plurality of pressure detection units corresponding to the loading holes are also arranged inside the upper protective shell, which are used to verify the weight of the material in the loading hole after the loading ball rotates a certain angle.

[0014] Optionally, a lower protective shell is fixedly installed under the bottom plate, and the lower protective shell is installed in close contact with the loading ball. A plurality of release holes are opened on the lower protective shell, and the plurality of release holes correspond to the plurality of loading holes one by one. A solenoid valve is installed on the release hole, and the plurality of loading holes are radially distributed on the loading ball.

[0015] Optionally, the water inlet pipe is connected to an annular pipe, the annular pipe is installed above the mixing tank, and a plurality of water spray holes are provided on the annular pipe.

[0016] Optionally, a stirring blade is installed in the mixing tank, the top of the stirring blade is rotatably connected to a fixing frame, the fixing frame is fixedly installed in the mixing tank, the bottom end of the stirring blade is dynamically connected to a stirring motor, and a motor housing is installed outside the stirring motor.

[0017] Optionally, a partition layer is installed inside the tank body, and a support platform is installed above the partition layer. The support platform supports the mixing tank, and a weighing meter is installed between the support platform and the mixing tank to monitor the weight of the material in the mixing tank. A slider is installed on the side wall of the mixing tank, and a slide groove compatible with the slider is opened on the inner wall of the tank body. The mixing tank is connected to a sewer pipe, which leads the solution in the mixing tank to the tank body below the partition layer, and the outlet pipe leads the solution.

[0018] The present invention also provides a method for controlling chemicals in an intelligent carbon source chemical control system for sewage treatment, comprising the following steps:

[0019] Introduce sewage into the sewage treatment tank at a flow rate V for a duration of t;

[0020] The TN online automatic monitoring instrument monitors the TN value of sewage in the sewage treatment pool, and the COD online automatic monitoring instrument monitors the COD value of sewage in the sewage pool and sends the TN value and COD value;

[0021] The control module receives the TN value and COD value and calculates the required carbon source amount;

[0022] Calculate the required weight of the solid carbon source according to the required amount of carbon source and the ratio of solid carbon source to water in the carbon source solution;

[0023] The required volume of the solid carbon source is calculated according to the required weight of the solid carbon source and the density of the solid carbon source. The proportioning module measures the required volume of the solid carbon source and mixes it with water.

[0024] The mixed carbon source solution is transported to the sewage pool.

[0025] Optionally, the calculation of the required volume of the solid carbon source, the proportioning module measuring the required volume of the solid carbon source, and mixing it with water includes the current control unit controlling the conductor rod to pass current:

[0026] ;

[0027] Among them, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod is L, the elastic coefficient of the reset spring is k, the distance between the supporting plate and the loading hole opening in the initial state is a, the hole radius of the loading hole is r, and v is the volume of the material required for each loading hole.

[0028] Beneficial effects of the present invention: the present invention calculates the amount of required carbon source solution according to the TN value and COD value of sewage through the control module, calculates the mass of the required solid carbon source according to the ratio of solid carbon source to water in the carbon source solution, and calculates the volume of the required solid carbon source according to the density of the solid carbon source. The current control unit controls the position of the supporting plate, thereby changing the volume of the loading hole, so that the total volume of multiple loading holes is equal to the volume of the required solid carbon source. After loading, the rotating motor drives the loading ball to rotate, so that the loading ball part loaded with the solid carbon source rotates into the tank body, and the current control unit controls the movement of the supporting plate, cooperates with the gravity of the solid carbon source itself, and pushes it out of the loading hole to achieve accurate addition of solid materials. After that, a certain amount of water is introduced into the water inlet pipe to mix with the solid carbon source, and finally the carbon source solution is introduced into the sewage treatment tank through the outlet pipe, thereby achieving accurate addition of the carbon source, ensuring that the sewage treatment meets the standards while saving the amount of carbon source. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a system structure diagram of an intelligent carbon source control system for sewage treatment according to an embodiment of the present invention;

[0031] Figure 2 A three-dimensional diagram of a deployment module of an intelligent carbon source control system for sewage treatment according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of a deployment module of an intelligent carbon source control system for sewage treatment according to an embodiment of the present invention;

[0033] Figure 4 for Figure 3 A schematic diagram of the enlarged local structure of part A;

[0034] Figure 5 for Figure 4 A schematic diagram of the enlarged local structure of part B;

[0035] Figure 6 for Figure 5 Schematic diagram of the working state of the middle structure;

[0036] Figure 7 This is a schematic structural diagram of a charging ball of an intelligent carbon source control system for sewage treatment according to an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the coordination between a charging ball and a protective shell of an intelligent carbon source control system for sewage treatment according to an embodiment of the present invention;

[0038] Fig. 9 The present invention is a flowchart of an intelligent carbon source control method for sewage treatment according to an embodiment of the present invention.

[0039] The markings in the figure are:

[0040] 101. tank body; 102. mixing tank; 103. chute; 104. slider; 105. stirring motor; 106. motor housing; 107. support platform; 108. stirring blade; 109. fixing frame; 110. downpipe; 111. partition layer; 112. waste water pipe; 113. outlet pipe; 114. outlet flow meter; 201. material box; 202. bottom plate; 203. rotating shaft; 204. upper protective shell; 205. feeding hole; 206. charging ball; 207. charging hole; 208. lower protective shell; 209. releasing hole; 210. rotating motor; 301. water inlet pipe; 302. annular tube; 303. water spray hole; 401. supporting plate; 402. connecting column; 403. conductor rod; 404. reset spring; 405. contact circuit. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] like Figures 1 to 8 As shown, a specific embodiment of the present invention provides an intelligent carbon source control system for sewage treatment, including a sewage treatment tank for containing sewage, a control module and a proportioning module;

[0044] The sewage treatment pool is equipped with a TN online automatic monitoring instrument for monitoring the TN value of sewage and a COD online automatic monitoring instrument for monitoring the COD value of sewage;

[0045] The control module is used to control the proportioning module to prepare the carbon source solution according to the TN value and COD value of the sewage, and includes a data processing unit for processing data and a communication unit for receiving and sending information;

[0046] The proportioning module includes a tank body 101, a mixing tank 102 is installed inside the tank body 101, a material box 201 for placing a solid carbon source is arranged above the mixing tank 102, a bottom plate 202 is arranged at the bottom of the material box 201, a charging ball 206 is embedded on the bottom plate 202, and a plurality of charging holes 207 are opened on the charging ball 206 for accommodating the solid carbon source, and a supporting plate 401 that moves up and down is installed in the charging hole 207, and the supporting plate 401 is connected to a current control unit for adjusting the position of the supporting plate 401 in the charging hole 207. The loading ball 206 is connected to the rotating shaft 203, and the rotating shaft 203 is connected to the rotating motor 210. The rotating motor 210 is used to drive the loading ball 206 to rotate, so that the part of the loading ball 206 loaded with materials rotates from the material box 201 to the tank body 101. The tank body 101 is also equipped with an inlet pipe 301, and the inlet pipe 301 is equipped with an inlet flow meter. The mixing tank 102 is connected to a derivation pipe 113 for introducing the carbon source solution into the sewage pool, and the derivation pipe 113 is equipped with a derivation flow meter 114.

[0047] When treating sewage, sewage is first introduced into the sewage treatment pool. During this process, the sewage is introduced at a certain flow rate V for a certain time t, thereby obtaining the volume of sewage in the sewage treatment pool. Then, the TN online automatic monitoring instrument and the COD online automatic monitoring instrument in the sewage treatment pool respectively detect the TN value and COD value in the sewage. The control module calculates the amount of the required carbon source solution according to the TN value and COD value of the sewage, and calculates the mass of the required solid carbon source according to the ratio of the solid carbon source to water in the carbon source solution. According to the density of the solid carbon source, the volume of the required solid carbon source is calculated. The current control unit controls the position of the support plate 401, thereby changing the loading hole 20 7, so that the total volume of the multiple loading holes 207 is equal to the volume of the required solid carbon source. After loading, the rotating motor 210 drives the loading ball 206 to rotate, so that the loading ball 206 loaded with the solid carbon source is partially rotated into the tank body 101, and the current control unit controls the movement of the supporting plate 401, and cooperates with the gravity of the solid carbon source to push it out of the loading hole 207 to achieve accurate addition of solid materials. After that, a certain amount of water is introduced into the water inlet pipe 301 to mix with the solid carbon source, and finally the carbon source solution is introduced into the sewage treatment pool through the outlet pipe 113, thereby achieving accurate addition of the carbon source, ensuring that the sewage treatment meets the standards while saving the amount of carbon source.

[0048] In some optional specific embodiments, the current control unit includes a conductor rod 403 slidably installed in the charging hole 207, a connecting column 402 is connected between the conductor rod 403 and the supporting plate 401, a reset spring 404 is installed between the conductor rod 403 and the bottom of the charging hole 207, a contact circuit 405 is installed on the side wall of the charging hole 207, and the contact circuit 405 is electrically connected to the conductor rod 403. A uniform magnetic field is provided in the charging hole 207, and the magnetic flux lines of the uniform magnetic field are not parallel to the conductor rod 403. Then, the current control unit controls the conductor rod 403 to pass current:

[0049] ;

[0050] Among them, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod 403 is L, the elastic coefficient of the reset spring 404 is k, the distance between the supporting plate 401 and the opening of the loading hole 207 in the initial state is a, the hole radius of the loading hole 207 is r, and v is the volume of the material required for each loading hole 207.

[0051] In use, the current control unit is used to calculate the volume of the solid carbon source required for each charging hole 207, and the volume of the solid carbon source required for each charging hole 207 is calculated according to the volume of the solid carbon source required. The magnitude of the current is calculated, so that the conductor rod 403 is subjected to force to compress the reset spring 404, driving the support plate 401 to reach the preset position. At the same time, during the loading process, by continuously changing the current magnitude of the conductor rod 403, the reset spring 404 can be continuously expanded and contracted, thereby causing the support plate 401 to vibrate, thereby guiding the solid carbon source to enter.

[0052] In some optional specific embodiments, an electromagnet is provided on the inner wall of the loading hole 207 to fix the supporting plate 401 after it reaches the set position, so as to prevent the supporting plate 401 from moving downward due to the weight of the material.

[0053] In some optional specific embodiments, such as Figures 2 to 8As shown, an upper protective shell 204 is installed on the bottom plate 202, and a plurality of feed holes 205 matching the loading holes 207 are opened on the upper protective shell 204. The upper protective shell 204 and the loading ball 206 are directly mounted. A plurality of pressure detection units corresponding to the loading holes 207 are also arranged inside the upper protective shell 204, which are used to verify the weight of the material in the loading hole 207 after the loading ball 206 rotates a certain angle. During use, after the loading ball 206 is filled with the carbon source, the rotating motor 210 drives the loading ball 206 to rotate a certain angle so that the loading hole 207 is opposite to the pressure detection unit. At this time, the current of the conductor rod 403 is turned off, and under the elastic force of the reset spring, the solid carbon source is pushed to apply pressure to the pressure detection unit. The pressure detection unit verifies the weight of the material in the loading hole 207 according to the applied pressure. If the material weight is within the error range, the rotating motor 210 drives the loading ball 206 to rotate a certain angle to feed the material into the mixing tank 102. If it exceeds the error range, the rotating motor 210 rotates the loading ball 206 to reset it for secondary loading.

[0054] In some optional specific embodiments, such as Figures 2 to 8 As shown, a lower protective shell 208 is fixedly installed below the bottom plate 202, and the lower protective shell 208 is installed in close contact with the charging ball 206. A plurality of release holes 209 are provided on the lower protective shell 208, and the plurality of release holes 209 correspond to the plurality of charging holes 207 one by one. A solenoid valve is installed on the release hole 209, and the plurality of charging holes 207 are radially distributed on the charging ball 206. In use, when the charging ball 206 rotates to the lower protective shell 208, the plurality of charging holes 207 correspond to the release holes 209 one by one. At this time, the solenoid valve is opened, and under the elastic force of the reset spring 404, the solid carbon source in the charging hole 207 is ejected, and the solid carbon source is evenly sprinkled into the mixing tank 102 with the radially distributed charging holes 207, thereby reducing the difficulty of mixing.

[0055] In some optional specific embodiments, such as Figures 2 to 8 As shown, the water inlet pipe 301 is connected to an annular pipe 302, which is installed above the mixing tank 102, and a plurality of water spray holes 303 are provided on the annular pipe 302. In use, the solid carbon source can be sprayed multiple times by short-opening the solenoid valve multiple times, and the water source can be introduced at the same time, so that the water and the solid carbon source are mixed more quickly.

[0056] In some optional specific embodiments, such as Figures 2 to 8 As shown, a stirring blade 108 is installed in the mixing tank 102, and the top of the stirring blade 108 is rotatably connected to a fixing frame 109, and the fixing frame 109 is fixedly installed in the mixing tank 102. The bottom end of the stirring blade 108 is poweredly connected to a stirring motor 105, and a motor housing 106 is installed outside the stirring motor 105.

[0057] In some optional specific embodiments, such as Figures 2 to 8 As shown, a partition layer 111 is installed inside the tank body 101, and a support platform 107 is installed above the partition layer 111. The support platform 107 supports the mixing tank 102, and a weighing meter is installed between the support platform 107 and the mixing tank 102 for monitoring the weight of the material in the mixing tank 102. A slider 104 is installed on the side wall of the mixing tank 102, and a slide groove 103 adapted to the slider 104 is opened on the inner wall of the tank body 101. The mixing tank 102 is connected to a sewer pipe 110, which leads the solution in the mixing tank 102 to the tank body 101 below the partition layer 111, and the outlet pipe 113 leads the solution. During use, after the mixing tank 102 completes mixing of the solution, it is discharged below the partition layer 111, and at the same time, a weighing instrument monitors changes in the weight of the solution in the mixing tank 102. After the outlet pipe 113 outlets the preset flow of solution, the downpipe 110 is monitored and closed, and the weight of the solution in the mixing tank 102 is monitored, thereby reducing the amount of the next proportioned solution accordingly. Since a portion of material is always lost during transportation and mixing, a portion of the surplus is generally reserved when setting the preset amount of material. When the consumed amount is less than the surplus, the reserved surplus is partially wasted. By measuring the amount of remaining solution in the mixing tank 102, the reserved surplus for the next mixing can be reduced accordingly, thereby saving costs.

[0058] In some optional specific embodiments, such as Figure 2-Figure 8 As shown, the tank body 101 is connected to a waste water pipe 112 for discharging excess waste.

[0059] The present invention also provides an intelligent carbon source control method for sewage treatment, comprising:

[0060] S101: introducing sewage into a sewage treatment tank at a flow rate V for a duration t;

[0061] S102: The TN online automatic monitoring instrument monitors the TN value of the sewage in the sewage treatment pool, and the COD online automatic monitoring instrument monitors the COD value of the sewage in the sewage pool, and sends the TN value and COD value;

[0062] S103: The control module receives the TN value and the COD value, and calculates the required carbon source amount;

[0063] S104: Calculating the required weight of the solid carbon source according to the required amount of carbon source and the ratio of the solid carbon source to water in the carbon source solution;

[0064] S105: Calculate the required volume of the solid carbon source according to the required weight of the solid carbon source and the density of the solid carbon source, and the proportioning module measures the required volume of the solid carbon source and mixes it with water;

[0065] S106: The mixed carbon source solution is transported to a sewage pool.

[0066] In some optional specific embodiments, the calculation of the required volume of the solid carbon source, the proportioning module measuring the required volume of the solid carbon source, and mixing it with water includes the current control unit controlling the conductor rod 403 to pass current:

[0067] ;

[0068] Among them, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod 403 is L, the elastic coefficient of the reset spring 404 is k, the distance between the supporting plate 401 and the opening of the loading hole 207 in the initial state is a, the hole radius of the loading hole 207 is r, and v is the volume of the material required for each loading hole 207.

[0069] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0070] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent carbon source control system for sewage treatment, comprising a sewage treatment tank for accommodating sewage, a control module and a proportioning module, characterized in that: The sewage treatment pool is equipped with a TN online automatic monitoring instrument for monitoring the TN value of sewage and a COD online automatic monitoring instrument for monitoring the COD value of sewage; The control module is used to control the proportioning module to prepare the carbon source solution according to the TN value and COD value of the sewage, and includes a data processing unit for processing data and a communication unit for receiving and sending information; The proportioning module comprises a tank body (101), a mixing tank (102) is installed inside the tank body (101), a material box (201) for placing a solid carbon source is arranged above the mixing tank (102), a bottom plate (202) is arranged at the bottom of the material box (201), a charging ball (206) is embedded on the bottom plate (202), a plurality of charging holes (207) are opened on the charging ball (206) for accommodating the solid carbon source, a supporting plate (401) that moves up and down is installed in the charging hole (207), and the supporting plate (401) is connected to a current control unit for adjusting the position of the supporting plate (401) in the charging hole (207). The loading ball (206) is connected to a rotating shaft (203), the rotating shaft (203) is connected to a rotating motor (210), the rotating motor (210) is used to drive the loading ball (206) to rotate, so that the portion of the loading ball (206) loaded with materials rotates from the material box (201) to the tank body (101), the tank body (101) is also equipped with a water inlet pipe (301), the water inlet pipe (301) is equipped with a water inlet flow meter, the mixing tank (102) is connected to a dewatering pipe (113) for introducing a carbon source solution into a sewage pool, the dewatering pipe (113) is equipped with a dewatering flow meter (114); The current control unit comprises a conductor bar (403) slidably mounted in the loading hole (207); a connecting column (402) is connected between the conductor bar (403) and the supporting plate (401); a return spring (404) is installed between the conductor bar (403) and the bottom of the loading hole (207); a contact circuit (405) is installed on the side wall of the loading hole (207); the contact circuit (405) is electrically connected to the conductor bar (403); a uniform magnetic field is provided in the loading hole (207), and the magnetic flux lines of the uniform magnetic field are not parallel to the conductor bar (403); then the current control unit controls the conductor bar (403) to pass current: ； Wherein, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod (403) is L, the elastic coefficient of the return spring (404) is k, the distance between the support plate (401) and the opening of the loading hole (207) in the initial state is a, the hole radius of the loading hole (207) is r, and v is the volume of the material required to be loaded in each loading hole (207).

2. According to claim 1, the intelligent carbon source control system for sewage treatment is characterized in that: An electromagnet is provided on the inner wall of the loading hole (207) for fixing the supporting plate (401) after it reaches a set position.

3. The intelligent carbon source control system for sewage treatment according to claim 1 is characterized in that: An upper protective shell (204) is installed on the bottom plate (202), and a plurality of feeding holes (205) matching the charging holes (207) are provided on the upper protective shell (204). The upper protective shell (204) is directly fitted with the charging ball (206), and a plurality of pressure detection units corresponding to the charging holes (207) are also provided inside the upper protective shell (204), which are used to check the weight of the material in the charging hole (207) after the charging ball (206) rotates a certain angle.

4. The intelligent carbon source control system for sewage treatment according to claim 1 is characterized in that: A lower protective shell (208) is also fixedly installed below the bottom plate (202). The lower protective shell (208) is installed in close contact with the charging ball (206). A plurality of release holes (209) are opened on the lower protective shell (208). The plurality of release holes (209) correspond to the plurality of charging holes (207) one by one. A solenoid valve is installed on the release hole (209). The plurality of charging holes (207) are radially distributed on the charging ball (206).

5. The intelligent carbon source control system for sewage treatment according to claim 1 is characterized in that: The water inlet pipe (301) is connected to an annular pipe (302), the annular pipe (302) is installed above the mixing tank (102), and a plurality of water spray holes (303) are provided on the annular pipe (302).

6. The intelligent carbon source control system for sewage treatment according to claim 1 is characterized in that: The mixing tank (102) is provided with a stirring blade (108), the top of the stirring blade (108) is rotatably connected to a fixing frame (109), the fixing frame (109) is fixedly installed in the mixing tank (102), the bottom of the stirring blade (108) is dynamically connected to a stirring motor (105), and a motor housing (106) is installed outside the stirring motor (105).

7. The intelligent carbon source control system for sewage treatment according to claim 1 is characterized in that: A partition layer (111) is installed inside the tank body (101), a support platform (107) is installed above the partition layer (111), the support platform (107) supports the mixing tank (102), a weighing instrument is installed between the support platform (107) and the mixing tank (102), and is used to monitor the weight of the material in the mixing tank (102), a slider (104) is installed on the side wall of the mixing tank (102), a slide groove (103) adapted to the slider (104) is opened on the inner wall of the tank body (101), the mixing tank (102) is connected to a downpipe (110), the downpipe (110) guides the solution in the mixing tank (102) to the tank body (101) below the partition layer (111), and the outlet pipe (113) guides the solution.

8. A method for controlling chemicals in an intelligent carbon source control system for sewage treatment according to any one of claims 1 to 7, characterized in that: The steps include: Introduce sewage into the sewage treatment tank at a flow rate V for a duration of t; The TN online automatic monitoring instrument monitors the TN value of sewage in the sewage treatment pool, and the COD online automatic monitoring instrument monitors the COD value of sewage in the sewage pool and sends the TN value and COD value; The control module receives the TN value and COD value and calculates the required carbon source amount; Calculate the required weight of the solid carbon source according to the required amount of carbon source and the ratio of solid carbon source to water in the carbon source solution; The required volume of the solid carbon source is calculated according to the required weight of the solid carbon source and the density of the solid carbon source. The proportioning module measures the required volume of the solid carbon source and mixes it with water. The mixed carbon source solution is transported to the sewage pool.

9. The method for controlling chemicals in an intelligent carbon source chemical control system for sewage treatment according to claim 8, characterized in that: The calculation of the required volume of the solid carbon source, the proportioning module measuring the required volume of the solid carbon source, and mixing it with water includes the current control unit controlling the conductor rod (403) to pass current: ； Wherein, B is the magnetic induction intensity of the uniform magnetic field, the length of the conductor rod (403) is L, the elastic coefficient of the return spring (404) is k, the distance between the support plate (401) and the opening of the loading hole (207) in the initial state is a, the hole radius of the loading hole (207) is r, and v is the volume of the material required to be loaded in each loading hole (207).

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