Chemical wastewater treatment system for preparing silicolysis catalyst

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a chemical wastewater treatment system for preparing a silicolysis catalyst, which sequentially comprises a pretreatment unit, a chemical treatment unit, a biological treatment unit, an activated carbon adsorption unit and a sterilization unit, the wastewater is fully mixed through the stirring device, and the water quality and the water quantity are balanced; the chemical treatment unit comprises a neutralization tank and a coagulative precipitation tank, and the pH value of the wastewater is adjusted through the neutralization tank; the chemical wastewater treatment system provided by the invention can treat chemical wastewater generated in the preparation process of the silicolysis catalyst, and realizes utilization and protection of water resources.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to a chemical wastewater treatment system for the preparation of silicon hydrolysis catalysts. Background Art

[0002] The preparation of silicon hydrolysis catalysts is a process of manufacturing catalysts that can promote the silicon hydrolysis reaction through chemical and physical methods. When using silicon sources such as sodium silicate to react with inorganic acids such as sulfuric acid and hydrochloric acid, a large amount of acidic wastewater will be generated. This kind of wastewater contains unreacted silicon source substances such as sodium silicate, excessive acid, and inorganic salts such as sulfates and hydrochlorides generated by the reaction. Direct discharge of the wastewater will seriously pollute the environment, so the wastewater needs to be treated. Summary of the Invention

[0003] The purpose of the present invention is to provide a chemical wastewater treatment system for the preparation of silicon hydrolysis catalysts to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A chemical wastewater treatment system for the preparation of silicon hydrolysis catalysts successively includes a pretreatment unit, a chemical treatment unit, a biological treatment unit, an activated carbon adsorption unit, and a sterilization unit. The pretreatment unit includes a regulating tank with a filtering function. The wastewater enters the regulating tank after being filtered, and is fully mixed through a stirring device to balance the water quality and quantity. The chemical treatment unit includes a neutralization tank and a coagulation sedimentation tank. The pH value of the wastewater is adjusted through the neutralization tank. The treated wastewater is then input into the coagulation sedimentation tank. By adding a coagulant and a flocculant aid, the fine suspended solids and colloidal substances in the wastewater are aggregated into larger particles, and then removed through sedimentation. The biological treatment unit includes a hydrolysis acidification tank and an aerobic biological treatment tank. In the hydrolysis acidification tank, through the action of anaerobic microorganisms, macromolecular organic matter is decomposed into small molecule organic acids and alcohols. Then it is further treated through the aerobic biological treatment tank. In the aerobic biological treatment tank, through the metabolic action of aerobic microorganisms, the organic matter in the wastewater is further decomposed into carbon dioxide and water. The activated carbon adsorption unit is used for adsorption and filtration treatment, and the treated water is sent to the sterilization unit. A dynamic sterilization device is provided in the sterilization unit.

[0005] The dynamic sterilization device includes a front-end water tank, a tail-end water tank, and a sterilization stepped pipe. The sterilization stepped pipe is connected and arranged between the front-end water tank and the tail-end water tank. There are several groups of the sterilization stepped pipes, and they are evenly distributed perpendicular to the horizontal plane. In each group of sterilization step tubes, an ultraviolet lamp tube is coaxially arranged. The ultraviolet lamp tube is used to perform ultraviolet irradiation sterilization on the water flow passing through the inside of the sterilization step tube. A water level detection switch is arranged in the front water tank, and the water level detection switch corresponds to the position and quantity of the ultraviolet lamp tubes one by one.

[0006] A current limiting and regulating unit is arranged in the front water tank, and the current limiting and regulating unit is used to change the degree of the connected beam flow between the front water tank and the sterilization step tube.

[0007] The current limiting and regulating unit includes a current limiting cover and a current limiting through groove. The current limiting cover is inserted into the sterilization step tube, and there is a sealed contact between the current limiting cover and the sterilization step tube. A current limiting through groove is formed on the surface of the current limiting cover. A sealed central sleeve is arranged on the current limiting cover, and the ultraviolet lamp tube passes through the sealed central sleeve in an inserted manner. The current limiting cover is in sealed contact with the ultraviolet lamp tube through the sealed central sleeve.

[0008] A lead screw sleeve is fixedly arranged on the outside of the current limiting cover, and a control lead screw is inserted into the lead screw sleeve. The control lead screw and the lead screw sleeve are in screw fit with each other. A motor module is fixedly arranged on the surface of the front water tank, and the motor module is in transmission connection with the control lead screw.

[0009] A water inlet pipe is connected and arranged at the lower position of the front water tank, and a drain pipe is connected and arranged at the lower position of the tail water tank.

[0010] An optical bubble sensor and an online liquid viscosity sensor are arranged in the inner part of the front water tank near the lower area; a computer module is also arranged in the sterilization unit, and a control algorithm is arranged in the computer module. The control algorithm detects the content of bubbles in the water flow through the optical bubble sensor and speculates the content of bubbles in the water flow in the sterilization step tube after a certain period of time in the future in cooperation with the online liquid viscosity sensor, and controls the current limiting and regulating unit according to the content of bubbles in the water flow in the sterilization step tube.

[0011] The control algorithm specifically includes: using the optical bubble sensor and the online liquid viscosity sensor to respectively collect the bubble content and liquid viscosity at the current moment; The bubble dissipation process follows the exponential decay law, and the decay constant is related to the liquid viscosity. The following bubble content speculation model is established: ; Where is the bubble content at time ; is the bubble content at the initial time ; is related to the liquid viscosity The relevant decay constant; is the time interval; Decay constant is obtained by fitting experimental data. Let have a linear relationship with the liquid viscosity as follows: , where and are constants obtained by fitting experimental data.

[0012] Given the bubble content at the current moment and the liquid viscosity , predict the bubble content at a subsequent time by calculating according to the following steps: Calculate the decay constant : ; Calculate the time interval ; Predict the bubble content at a subsequent time : .

[0013] According to the value of, control the flow-limiting adjustment unit. The larger the value of, the higher the degree of controlling the connected beam flow between the front water sump and the sterilization step pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The chemical wastewater treatment system of the present invention can treat the chemical wastewater generated in the preparation process of the silicon solution catalyst, realizing the utilization and protection of water resources; By setting the dynamic sterilization device, during the process of ultraviolet sterilization, in the face of unstable water flow, the dynamic sterilization device can automatically control the number of lit ultraviolet lamps according to the water flow, which is more energy-saving and efficient.

[0015] By setting the flow-limiting adjustment unit, the dynamic sterilization device can adjust the sterilization treatment effect according to different requirements; and combined with the control algorithm, it can effectively reduce the weakening effect of bubbles on the sterilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic flow chart of the chemical wastewater treatment system for preparing silicon solution catalyst of the present invention.

[0017] Figure 2 is a schematic diagram of the dynamic sterilization device of the present invention.

[0018] Figure 3 This is a schematic diagram of the three-dimensional semi-section of the dynamic sterilization device of the present invention.

[0019] Figure 4 It is Figure 3 an enlarged schematic diagram of area A in

[0020] In the figure: 1, front-end water tank; 2, tail-end water tank; 3, sterilization step pipe; 4, ultraviolet lamp tube; 5, water level detection switch; 301, current-limiting cover; 302, current-limiting through groove; 303, sealed central sleeve; 304, lead screw sleeve; 305, control lead screw; 306, motor module; 101, water inlet pipe; 201, drain pipe; 102, optical bubble sensor; 103, on-line liquid viscosity sensor. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a chemical wastewater treatment system for the preparation of silicon solution catalysts. As Figure 1 shown in , it sequentially includes a pretreatment unit, a chemical treatment unit, a biological treatment unit, an activated carbon adsorption unit, and a sterilization unit. The pretreatment unit includes an adjustment tank with a filtering function, and the filtering function is realized by setting a grid. Larger suspended solids and floating objects in the wastewater are removed through grid filtration. After the wastewater is filtered, it enters the adjustment tank, and the wastewater is fully mixed through a stirring device to balance the water quality and water volume, enabling the subsequent treatment units to operate stably. Since the wastewater discharge during the preparation of silicon solution catalysts may be uneven, with large fluctuations in water volume and water quality, the adjustment tank can play a buffering role. The adjustment tank is generally a pool made of reinforced concrete, and a stirring device is provided in the tank. At the same time, the adjustment tank can also play a role in pre-aeration to improve the biodegradability of the wastewater.

[0023] The chemical treatment unit includes a neutralization tank and a coagulation sedimentation tank. The pH value of the wastewater is adjusted through the neutralization tank. The wastewater from the preparation of the silicon hydrolysis catalyst may be acidic or alkaline, and its pH value is adjusted to near neutral through a neutralization reaction. The neutralization tank is a reinforced concrete or steel reaction tank, equipped with a pH monitor and a chemical dosing device inside. According to the pH value of the wastewater, an acid or alkali solution is added to the neutralization tank through the chemical dosing device to make the pH value of the wastewater reach the set range. Commonly used acids include sulfuric acid, hydrochloric acid, etc., and alkalis include sodium hydroxide, calcium hydroxide, etc. The treated wastewater is then input into the coagulation sedimentation tank. By adding a coagulant and a flocculant aid, the fine suspended solids and colloidal substances in the wastewater are aggregated into larger particles, and then removed through sedimentation. The coagulant uses ferrous sulfate and polyaluminum chloride, and the flocculant aid uses polyacrylamide. The coagulation sedimentation tank includes a mixing zone, a reaction zone, and a sedimentation zone. The mixing zone is equipped with a rapid stirring device to fully mix the coagulant and the wastewater; the reaction zone is equipped with a slow stirring device to promote the formation of flocs; the sedimentation zone is used for sedimentation separation of the flocs. The coagulant hydrolyzes in water to generate high-valent metal ions, which neutralize the charge and adsorb and bridge the colloidal substances in the wastewater, making the colloid destabilize and aggregate; the flocculant aid further promotes the growth of the flocs. The formed flocs settle down in the sedimentation zone, the supernatant enters the subsequent treatment unit, and the sedimented sludge is discharged through the sludge discharge pipe.

[0024] The biological treatment unit includes a hydrolysis acidification tank and an aerobic biological treatment tank. In the hydrolysis acidification tank, through the action of anaerobic microorganisms, macromolecular organic matter is decomposed into small molecule organic acids and alcohols. The microorganisms in the hydrolysis acidification tank are mainly facultative anaerobic bacteria, which carry out metabolic activities under anoxic conditions; then it is treated through the aerobic biological treatment tank. In the aerobic biological treatment tank, the metabolic action of aerobic microorganisms is used to further decompose the organic matter in the wastewater into carbon dioxide and water; the aerobic biological treatment tank is of the activated sludge method type, and air is introduced into the tank through an aeration device to provide sufficient oxygen for aerobic microorganisms. Under aerobic conditions, the microorganisms use the organic matter in the wastewater as nutrients for metabolism and decompose it into carbon dioxide and water. At the same time, some microorganisms will use nutrients such as nitrogen and phosphorus in the wastewater for their own growth and reproduction. The treated mixed liquid is separated into mud and water through sedimentation, and the supernatant enters the subsequent treatment unit.

[0025] The activated carbon adsorption unit is used for adsorption and filtration treatment, and the treated water is sent to the sterilization unit, where a dynamic sterilization device is set. The dynamic sterilization device includes a front-end water tank 1, a tail-end water tank 2, and a sterilization step tube 3. The sterilization step tube 3 is connected and arranged between the front-end water tank 1 and the tail-end water tank 2. There are several groups of sterilization step tubes 3, and they are evenly distributed perpendicular to the horizontal plane; In each group of sterilization step tubes 3, an ultraviolet lamp tube 4 is coaxially arranged. The ultraviolet lamp tube 4 is used to perform ultraviolet irradiation sterilization on the water flow passing through the inside of the sterilization step tube 3. A water level detection switch 5 is arranged in the front water tank 1, and the water level detection switch 5 corresponds to the position and quantity of the ultraviolet lamp tubes 4 one by one.

[0026] A current limiting and regulating unit is arranged in the front water tank 1. The current limiting and regulating unit is used to change the degree of the connected beam flow between the front water tank 1 and the sterilization step tube 3.

[0027] The current limiting and regulating unit includes a current limiting cover 301 and a current limiting through groove 302. The current limiting cover 301 is inserted into the sterilization step tube 3. The current limiting cover 301 is in sealed contact with the sterilization step tube 3. The surface of the current limiting cover 301 is provided with the current limiting through groove 302. A sealing center sleeve 303 is arranged on the current limiting cover 301. The ultraviolet lamp tube 4 passes through the sealing center sleeve 303 in an inserted manner. The current limiting cover 301 is in sealed contact with the ultraviolet lamp tube 4 through the sealing center sleeve 303.

[0028] A lead screw sleeve 304 is fixedly arranged on the outside of the current limiting cover 301. A control lead screw 305 is inserted into the lead screw sleeve 304. The control lead screw 305 and the lead screw sleeve 304 are in screw fit. A motor module 306 is fixedly arranged on the surface of the front water tank 1. The motor module 306 is in transmission connection with the control lead screw 305.

[0029] A water inlet pipe 101 is communicated and arranged at the lower position of the front water tank 1. A drain pipe 201 is communicated and arranged at the lower position of the tail end water tank 2.

[0030] An optical bubble sensor 102 and an online liquid viscosity sensor 103 are arranged in the inner part of the front water tank 1 near the lower area; a computer module is also arranged in the sterilization unit. A control algorithm is arranged in the computer module. The control algorithm detects the content of bubbles in the water flow through the optical bubble sensor 102, and cooperates with the online liquid viscosity sensor 103 to infer the content of bubbles in the water flow in the sterilization step tube 3 after a certain period of time. According to the content of bubbles in the water flow in the sterilization step tube 3, the current limiting and regulating unit is controlled.

[0031] When ultraviolet rays are used to sterilize water, a large number of bubbles in the water will have various negative impacts on ultraviolet sterilization. The bubbles will scatter the ultraviolet rays, change the propagation direction of the ultraviolet rays, and reduce the effective propagation path and energy distribution uniformity of the ultraviolet rays in the water. During the wastewater treatment process, in the adsorption and filtration link of the activated carbon adsorption unit, due to the large number of microscopic voids on the surface of the activated carbon, a large number of bubbles will be generated in the water flow. When the bubbles enter the dynamic sterilization device for ultraviolet irradiation sterilization, it will have a certain impact. And the dissipation rate of the bubbles is related to the viscosity of the liquid. Based on the fact that there are many influencing factors in the upstream wastewater treatment process, the viscosity of the treated water flow may fluctuate, resulting in inconsistent bubble dissipation rates. Therefore, through the control algorithm, it can cooperate with the viscosity change of the water flow, infer the bubble content in the sterilization step tube 3, and control the flow-limiting adjustment unit based on the bubble content in the sterilization step tube 3. When the bubble content in the sterilization step tube 3 is higher, control the flow-limiting cover 301 in the flow-limiting adjustment unit to move to the right, so as to improve the degree of connected beam flow between the front water tank 1 and the sterilization step tube 3, make the water level in the front water tank 1 easier to rise, and then make the water flow more easily dispersed in multiple sterilization step tubes 3, reduce the water flow in each sterilization step tube 3, and increase the sterilization effect.

[0032] The control algorithm specifically includes: using the optical bubble sensor 102 and the online liquid viscosity sensor 103 to collect the bubble content and the liquid viscosity at the current moment; The bubble dissipation process follows the exponential decay law, and the decay constant is related to the liquid viscosity. Establish the following bubble content inference model: ; where is the bubble content at time ; is the bubble content at the initial time ; is the decay constant related to the liquid viscosity ; is the time interval; The decay constant is obtained by fitting experimental data. Assume that and the liquid viscosity have a linear relationship: where and are constants obtained by fitting experimental data.

[0033] Given the bubble content and the liquid viscosity at the current time to infer the subsequent time Bubble content , is calculated according to the following steps: Calculate the decay constant : ; Calculate the time interval ; Predict the bubble content at subsequent times : : .

[0034] According to the value of, control the flow-limiting adjustment unit, the larger the value of, the higher the degree of control of the connecting beam flow between the front water tank 1 and the sterilization step pipe 3; in the above process the value of, when the water pressure fluctuation is small, a definite value can be preset according to experimental estimation, so that after a time , the detected water flow can move into the sterilization step pipe 3. When the water pressure fluctuation is large, appropriately reduce according to the increase in water pressure the value of, so that the value of changes dynamically according to the water pressure. The water pressure can be obtained by adding a water pressure sensor in the pipeline.

[0035] The dynamic sterilization device in the present invention, when in use as shown in Figure 3 , the wastewater treated by the activated carbon adsorption unit is input through the water inlet pipe 101 and discharged through the drain pipe 201. After the water level in the front water tank 1 reaches the position of the water level detection switch 5 at different heights, the ultraviolet lamp tube 4 corresponding to the water level detection switch 5 will be lit. Thus, when the water flow rate input through the water inlet pipe 101 fluctuates greatly, the number of lit ultraviolet lamp tubes 4 in the sterilization step pipe 3 can be automatically adjusted, so that the number of lit ultraviolet lamp tubes 4 is always matched with the water flow rate, which is more energy-efficient and can ensure a more stable sterilization treatment effect.

[0036] For example, when the water flow rate is low, the water level only reaches the position of the first water level detection switch 5 below, and at this time only the first ultraviolet lamp tube 4 below is lit, and the water flow passes through the first sterilization step pipe 3 below for sterilization. When the water flow rate suddenly increases, the water level reaches the position of the second water level detection switch 5 below, and at this time the second ultraviolet lamp tube 4 below is lit, and the water flow passes through the first sterilization step pipe 3 below and the second sterilization step pipe 3 below for sterilization treatment, and so on.

[0037] The flow-limiting adjustment unit is as shown in Figure 4As shown in the figure, by controlling the rotation of the lead screw 305, the lead screw sleeve 304 and the current-limiting cover 301 can be driven to move. When the current-limiting cover 301 moves to the right, the cross-sectional area of the connection between the front water tank 1 and the sterilization stepped tube 3 will decrease, and the degree of the connected beam flow between the front water tank 1 and the sterilization stepped tube 3 will increase. When the current-limiting cover 301 moves to the left, the opposite is true.

[0038] The current-limiting covers 301 in multiple groups of current-limiting adjustment units act synchronously. When they jointly control the current-limiting cover 301 to move to the right and the degree of the connected beam flow between the front water tank 1 and the sterilization stepped tube 3 increases, the water level in the front water tank 1 can be more easily raised. Furthermore, the water flow can be more easily dispersed in multiple sterilization stepped tubes 3, reducing the water flow rate in each sterilization stepped tube 3 and increasing the sterilization effect. However, at the same time, the power consumption of the device will increase correspondingly. It can be adjusted according to different requirements to balance the power consumption and the sterilization effect.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical wastewater treatment system for preparing a silicolysis catalyst, comprising a pretreatment unit, a chemical treatment unit, a biological treatment unit, an activated carbon adsorption unit and a sterilization unit, characterized in that: The pretreatment unit includes a regulating tank with a filtering function. After being filtered, the wastewater enters the regulating tank and is fully mixed by a stirring device to balance the water quality and water quantity. The chemical treatment unit includes a neutralization tank and a coagulation sedimentation tank. The pH value of the wastewater is adjusted by the neutralization tank. The treated wastewater is then input into the coagulation sedimentation tank. By adding coagulants and coagulants, the fine suspended matter and colloidal substances in the wastewater are condensed into larger particles, which are then removed by precipitation. The biological treatment unit includes a hydrolysis acidification tank and an aerobic biological treatment tank. In the hydrolysis acidification tank, macromolecular organic matter is decomposed into small molecular organic acids and alcohols by the action of anaerobic microorganisms; and then the wastewater is treated in the aerobic biological treatment tank. In the aerobic biological treatment tank, the organic matter in the wastewater is further decomposed into carbon dioxide and water by the metabolic action of aerobic microorganisms. The activated carbon adsorption unit is used for adsorption and filtration treatment, and the treated water is sent to the sterilization unit, in which a dynamic sterilization device is arranged.

2. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 1, characterized in that: The dynamic sterilization device comprises a front water tank, a rear water tank and a sterilization ladder pipe, wherein the sterilization ladder pipe is arranged between the front water tank and the rear water tank, and the sterilization ladder pipe is arranged in a plurality of groups and is evenly distributed perpendicular to the horizontal plane; Each group of sterilization step tubes is coaxially provided with ultraviolet lamps, which are used to sterilize the water flowing through the sterilization step tubes by ultraviolet irradiation. A water level detection switch is provided in the front water tank, and the water level detection switch corresponds one-to-one to the position and number of the ultraviolet lamps.

3. A chemical wastewater treatment system for preparing a silicolysis catalyst according to claim 2, characterized in that: A limited flow regulating unit is arranged in the front water bin, and the limited flow regulating unit is used to change the degree of the connecting beam flow between the front water bin and the sterilization step pipe.

4. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 3, characterized in that: The current limiting adjustment unit includes a current limiting hood and a current limiting groove. The current limiting hood is inserted in the sterilization step tube. The current limiting hood is in sealing contact with the sterilization step tube. The surface of the current limiting hood is provided with a limited flow groove. The current limiting hood is provided with a sealing center sleeve. The ultraviolet lamp tube is inserted through the sealing center sleeve. The current limiting hood is in sealing contact with the ultraviolet lamp tube through the sealing center sleeve.

5. A chemical wastewater treatment system for preparing a silicolysis catalyst according to claim 4, characterized in that: A screw sleeve is fixedly provided on the outside of the flow limiting cover, a control screw is inserted in the screw sleeve, the control screw and the screw sleeve are spirally matched, and a motor module is fixedly provided on the surface of the front water tank, and the motor module is transmission-connected to the control screw.

6. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 2, characterized in that: A water inlet pipe is connected to the lower portion of the front water tank, and a drain pipe is connected to the lower portion of the rear water tank.

7. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 3, characterized in that: An optical bubble sensor and an online liquid viscosity sensor are arranged near the lower area inside the front water bin; a computer module is also arranged in the sterilization unit, and a control algorithm is arranged in the computer module. The control algorithm detects the bubble content in the water flow through the optical bubble sensor, and cooperates with the online liquid viscosity sensor to estimate the bubble content of the water flow in the sterilization step pipe after a certain period of time, and controls the current limiting adjustment unit according to the bubble content of the water flow in the sterilization step pipe.

8. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 7, characterized in that: The control algorithm specifically includes: using an optical bubble sensor and an online liquid viscosity sensor to respectively collect the current time Bubble content and liquid viscosity .

9. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 8, characterized in that: The bubble dissipation process follows the exponential decay law, and the decay constant is related to the liquid viscosity. The following bubble content estimation model is established: ; in It's time The bubble content; It is the initial moment The bubble content; Is related to the viscosity of the liquid The associated decay constant; is the time interval.

10. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 9, characterized in that: Decay Constant It is obtained by fitting the experimental data. Viscosity of liquid There is a linear relationship between: ,in and is a constant obtained by fitting the experimental data.

11. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 10, characterized in that: Known current time Bubble content and liquid viscosity , guess the subsequent time Bubble content , calculate it as follows: Calculate the decay constant : ; Calculate time interval ; Estimated follow-up time Bubble content : .

12. A chemical wastewater treatment system for preparing a silicidation catalyst according to claim 11, characterized in that: according to The value of the current limiting regulation unit is controlled. The larger the value is, the higher the degree of connected beam flow between the front water tank and the sterilization step pipe will be.

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