Desulfurization wastewater pre-clarification treatment system

Abstract

The utility model discloses a desulfurization wastewater pre-clarification treatment system which comprises a PH (Potential of Hydrogen) regulating tank and a wastewater cyclone which are sequentially connected through a pipeline, a liquid outlet of the wastewater cyclone is connected with a first liquid inlet of the reaction tank through a pipeline, three liquid outlets below the dosing tank are connected with three chemical inlets of the reaction tank through pipelines, a liquid outlet of the reaction tank is connected with a liquid inlet of the sedimentation tank through a pipeline, and a valve 2 is mounted on the connected pipeline; an upper overflow port of the sedimentation tank is connected with a liquid inlet of the middle tank through a pipeline, and a lower outlet of the sedimentation tank is connected with the sludge tank through a pipeline; a first liquid outlet of the middle tank is connected with a first liquid inlet above the tubular micro-filtration membrane filtration assembly through a pipeline, a valve 3 is mounted on the connected pipeline, a second liquid outlet of the middle tank is connected with a second liquid inlet of the reaction tank through a pipeline, and a valve 1 is mounted on the connected pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization wastewater treatment, in particular to a desulfurization wastewater pre-clarification treatment system. Background Art

[0002] Desulfurization wastewater pretreatment is a key link in achieving the goal of zero discharge of wastewater from thermal power plants. It separates and removes pollutants in desulfurization wastewater or converts them into harmless substances through a series of physical and chemical treatment steps, laying the foundation for subsequent deep treatment and resource utilization. Microfiltration membrane technology is used in desulfurization wastewater pretreatment due to its advantages such as small footprint, low drug consumption, and excellent treated water quality. Microfiltration membranes intercept suspended matter, bacteria, and macromolecules through screening mechanisms to separate wastewater.

[0003] The commonly used pretreatment process at home and abroad is raw water → coagulation → sedimentation clarification → filtration. The pH value of the desulfurized wastewater is adjusted in the primary reactor, and then coagulants and coagulants are added. After mixing, coagulation, flocculation and other actions, large-particle floccules are formed. After passing through the primary clarifier, the desulfurized wastewater with floccules removed is precipitated and softened. The suspended particles in the water in the clarifier are separated from the water under the action of gravity. Finally, some fine suspended matter in the desulfurized wastewater is removed by the filter, and the water quality is discharged or deeply treated and recycled after it meets the standard. The floccules and precipitates in the process are dehydrated and sent to landfill.

[0004] After pretreatment, the water quality, suspended solids and heavy metal ions of desulfurization wastewater can be effectively removed, Ca2+ concentration <5mg / L, and various indicators basically meet the standard requirements. However, this pretreatment process is difficult to control and is affected by many factors such as water quality, dosage, water temperature, mixing speed of water and coagulant. Different water quality affects the dosage, which directly affects the residual turbidity of water. Low water temperature affects the formation of flocculants. At the same time, uneven dosage of reagents leads to ash accumulation and caking in the desulfurization wastewater drying tower and ash pipe blockage. The desulfurization wastewater drying tower cannot operate for a long period of time, making it impossible to discharge the desulfurization wastewater normally, which in turn affects the normal operation of the desulfurization system and there is a risk of ash hopper collapse. Utility Model Content

[0005] The utility model aims to provide a desulfurization wastewater pre-clarification treatment system to solve the problems of uneven reagent addition and difficult process control proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a desulfurization wastewater pre-clarification treatment system, comprising a pH adjusting tank, a wastewater cyclone, a reaction tank, a sedimentation tank, an intermediate tank, a drug adding box, a sludge tank, a water tank, a vacuum belt dehydrator, a tubular microfiltration membrane filtration component, a valve 1, a valve 2, and a valve 3, wherein the pH adjusting tank and the wastewater cyclone are connected in sequence through pipelines; the liquid outlet of the wastewater cyclone is connected to the first liquid inlet of the reaction tank through a pipeline, the three liquid outlets below the drug adding box are connected to the first, second and third drug inlets of the reaction tank through pipelines, the liquid outlet of the reaction tank is connected to the liquid inlet of the sedimentation tank through a pipeline, and a valve 2 is installed on the connected pipelines; The overflow port above the sedimentation tank is connected to the liquid inlet of the intermediate tank through a pipeline, and the lower outlet of the sedimentation tank is connected to the sludge tank through a pipeline; the first liquid outlet of the intermediate tank is connected to the first liquid inlet above the tubular microfiltration membrane filtration component through a pipeline, and a valve 3 is installed on the connected pipeline; the second liquid outlet of the intermediate tank is connected to the second liquid inlet of the reaction tank through a pipeline, and a valve 1 is installed on the connected pipeline; the upper outlet of the tubular microfiltration membrane filtration component is installed with a pipeline connected to the second liquid inlet, and another pipeline is installed to connect to the sludge tank, and the lower liquid outlet of the tubular microfiltration membrane filtration component is connected to the water tank through a pipeline; the sludge tank outlet is connected to the vacuum belt dehydrator.

[0007] Preferably, the pH adjustment tank is used to receive wastewater from different channels and uniformly adjust it to weak alkalinity for subsequent treatment; the wastewater cyclone performs the first step of solid-liquid separation on the wastewater, separates large particles from the wastewater to prevent subsequent clogging of the pipeline; the vacuum belt dewatering machine is used to dewater sludge, and the sludge is sent into the equipment on the filter cloth conveyed by the belt. The transverse grooves and the middle through holes on the belt suck the liquid into the vacuum box, and the remaining sludge passes through the forming area, the washing area and the drying area under vacuum suction to form a qualified filter cake, and is finally sent to the unloading trough in the unloading area and sent to the gypsum warehouse by the transfer belt conveyor; the tubular microfiltration membrane filtration component continues to further process the treated sewage flowing out of the intermediate tank through physical separation, removes suspended particles and colloids in the water, and puts them into the sludge tank through the upper outlet, and the remaining clarified liquid flows into the water tank through the lower liquid outlet; the clarified liquid flows out of the water tank for subsequent treatment.

[0008] Preferably, the reaction tank is a triple system, the first, second and third drug inlets are respectively located directly above the three boxes, and the middle of the drug adding box is divided into three storage rooms by two partitions; the first storage room of the drug adding box adds organic sulfur to the first drug inlet of the reaction tank to achieve the removal of fluoride ions and the precipitation of heavy metals; the second storage room of the drug adding box adds liquid polyferric chloride to the second drug inlet of the reaction tank, so as to promote the continuous bridge of the precipitated fine particles to form alum flowers, which is convenient for precipitation; the third storage room of the drug adding box adds hydrochloric acid to the third drug inlet of the reaction tank to adjust the pH value of the liquid for subsequent storage and discharge.

[0009] Preferably, the sedimentation tank is used to precipitate the treated wastewater particles flowing out of the reaction tank, and transport the precipitated particles to the sludge tank through the outlet.

[0010] Preferably, during the initial processing, the valve 2 and the valve 3 are in an open state, and the valve 1 is in a closed state.

[0011] A desulfurization wastewater pre-clarification treatment system also includes a dosing box controller, a controller 1, a controller 2, a controller 3, and a sensor 2. The sensor 2 monitors the pH value, conductivity, and heavy metal content of the treated sewage entering the intermediate tank in real time, and converts them into digital signals and transmits them to the data analysis system of the application layer through an infinite network; the data analysis system determines whether the currently treated wastewater meets the treatment standard. If so, the desulfurization wastewater pre-clarification treatment system operates normally, otherwise, a signal is sent to the dosing box controller, the controller 1, the controller 2, and the controller 3; after receiving the signal, the controller 2 and the controller 3 control the valve 2 and the valve 3 to close, the controller 1 controls the valve 1 to open, and the dosing box controller controls the adjustment of the reagent content of the dosing box entering the reaction tank; the adjustment plan data is transmitted to the database for record and archiving; after the adjustment, the sensor 2 continues to monitor.

[0012] Preferably, the data analysis system detects whether the medicine dosing box controller, the controller 1, the controller 2 and the controller 3 are in normal working condition before sending a signal. Otherwise, the alarm system is activated to require the operator to intervene and adjust the valve 1, the valve 2, the valve 3 and the medicine dosing box. If yes, the adjustment is performed normally.

[0013] Preferably, in the initial state, the medicine adding box controller controls the medicine adding box to add medicine.

[0014] A desulfurization wastewater pre-clarification treatment system also includes a sensor 1, which monitors the rates of different reactions of wastewater treatment in a reaction tank in real time, converts the rates into digital signals, and transmits them to a database through a network for record archiving.

[0015] Compared with the prior art, the utility model has the following beneficial effects: 1. The utility model controls the pre-clarification process of desulfurization wastewater by setting valves 1, 2, 3 and a monitoring system, solves the problem of uneven reagent delivery and improves it in time;

[0016] 2. The tubular microfiltration membrane components and the reflux of the intermediate pool make the pre-clarification treatment system more complete, so that the emission standards can be achieved better and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a system flow chart of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the detection system flow of the utility model.

[0020] In the figure: 1. pH adjustment tank; 2. wastewater cyclone; 3. reaction tank; 4. sedimentation tank; 5. intermediate tank; 6. dosing box; 7. sludge tank; 8. water tank; 9. vacuum belt dehydrator; 10. tubular microfiltration membrane filtration assembly; 11. valve 1; 12. valve 2; 13 valve 3; 01. dosing box controller; 02. controller 1; 03. controller 2; 04. controller 3; 05. sensor 1; 06. sensor 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 2The utility model provides a technical solution: 1. A desulfurization wastewater pre-clarification treatment system, comprising a pH adjustment tank 1, a wastewater cyclone 2, a reaction tank 3, a sedimentation tank 4, an intermediate tank 5, a drug adding box 6, a sludge tank 7, a water tank 8, a vacuum belt dehydrator 9, a tubular microfiltration membrane filtration component 10, a valve 111, a valve 212, and a valve 313, characterized in that: the pH adjustment tank 1 and the wastewater cyclone 2 are connected in sequence through pipelines; the liquid outlet of the wastewater cyclone 2 is connected to the first liquid inlet of the reaction tank 3 through a pipeline, the three liquid outlets below the drug adding box 6 are connected to the first, second and third drug inlets of the reaction tank 3 through pipelines, the liquid outlet of the reaction tank 3 is connected to the liquid inlet of the sedimentation tank 4 through a pipeline, and a valve 111 is installed on the connected pipelines. A valve 212 is installed; the overflow port above the sedimentation tank 4 is connected to the liquid inlet of the intermediate tank 5 through a pipeline, and the lower outlet of the sedimentation tank 4 is connected to the sludge tank 7 through a pipeline; the first liquid outlet of the intermediate tank 5 is connected to the first liquid inlet above the tubular microfiltration membrane filtration component 10 through a pipeline, and a valve 313 is installed on the connected pipeline; the second liquid outlet of the intermediate tank 5 is connected to the second liquid inlet of the reaction tank 3 through a pipeline, and a valve 111 is installed on the connected pipeline; the upper outlet of the tubular microfiltration membrane filtration component 10 is installed with a pipeline connected to the second liquid inlet, and another pipeline is installed to connect to the sludge tank 7, and the lower outlet of the tubular microfiltration membrane filtration component 10 is connected to the water tank 8 through a pipeline; the outlet of the sludge tank 7 is connected to the vacuum belt dehydrator 9;

[0023] The pH adjustment tank 1 is used to receive wastewater from different channels and uniformly adjust it to weak alkalinity for subsequent treatment; the wastewater cyclone 2 performs the first step of solid-liquid separation on the wastewater, separates large particles from the wastewater to prevent subsequent clogging of the pipeline; the vacuum belt dewatering machine 9 is used to dewater the sludge, and sends the sludge into the filter cloth conveyed by the belt in the equipment. The transverse grooves and the middle through holes on the belt suck the liquid into the vacuum box. The remaining sludge passes through the forming area, the washing area and the drying area under vacuum suction to form a qualified filter cake, and is finally sent to the unloading trough in the unloading area and sent to the gypsum warehouse by the transfer belt conveyor; the tubular microfiltration membrane filtration component 10 continues to further process the treated sewage flowing out of the intermediate tank 5 through physical separation, removes suspended particles and colloids in the water, and puts them into the sludge tank 7 through the upper outlet, and the remaining clarified liquid flows into the water tank 8 through the lower liquid outlet; the clarified liquid flows out of the water tank 8 for subsequent treatment;

[0024] The reaction tank 3 is a triple system, the first, second and third drug inlets are respectively located directly above the three boxes, and the middle of the drug adding box 6 is divided into three storage rooms by two partitions; the first storage room of the drug adding box 6 adds organic sulfur to the first drug inlet of the reaction tank to achieve the removal of fluoride ions and the precipitation of heavy metals; the second storage room of the drug adding box 6 adds liquid polyferric chloride to the second drug inlet of the reaction tank, which promotes the continuous bridging of the precipitated fine particles to form alum flowers, which is convenient for precipitation; the third storage room of the drug adding box 6 adds hydrochloric acid to the third drug inlet of the reaction tank to adjust the pH value of the liquid for subsequent storage and discharge;

[0025] The sedimentation tank 4 is used to precipitate the treated wastewater particles flowing out of the reaction tank 3, and transport the precipitated particles to the sludge tank 7 through the outlet;

[0026] During the initial processing, valve 212 and valve 313 are in the open state, and valve 111 is in the closed state.

[0027] See also Figure 3 A desulfurization wastewater pre-clarification treatment system also includes a dosing box controller 01, a controller 102, a controller 203, a controller 304, and a sensor 206. The sensor 206 monitors the pH value, conductivity, and heavy metal content of the treated sewage entering the intermediate tank 5 in real time, and converts them into digital signals and transmits them to the data analysis system of the application layer through the infinite network; the data analysis system determines whether the currently treated wastewater meets the treatment standard. If so, the desulfurization wastewater pre-clarification treatment system operates normally, otherwise, it sends a signal to the dosing box controller 01, the controller 102, the controller 203 and the controller 304; after receiving the signal, the controller 203 and the controller 304 control the valve 212 and the valve 313 to close, the controller 102 controls the valve 111 to open, and the dosing box controller 01 controls the reagent content of the dosing box 6 entering the reaction tank 3; the adjustment plan data is transmitted to the database for record and archiving; after the adjustment, the sensor 2 continues to monitor;

[0028] Before sending a signal, the data analysis system detects whether the dosing box controller 01, controller 102, controller 203 and controller 304 are in normal working state. Otherwise, the alarm system is activated to ask the operator to intervene and adjust valve 111, valve 212, valve 313 and dosing box 6. If yes, the adjustment is performed normally.

[0029] In the initial state, the medicine adding box controller 01 controls the medicine adding box 6 to add medicine;

[0030] The sensor 105 monitors the rates of different reactions of wastewater treatment in the reaction tank 3 in real time, converts them into digital signals and transmits them to the database through the network for record and archiving.

[0031] Working principle:

[0032] Initially, valves 212 and 313 are in an open state, and valve 111 is in a closed state. The dosing box controller 01 controls the dosing box 6 to add the agent. At this time, the amount of the agent added is the system's initial preset plan. Calcium hydroxide (Ca(OH)2) is added to the pH adjustment tank 1 to adjust the pH value of the wastewater to about pH 9.5, and then flows into the wastewater cyclone 2. When the wastewater containing suspended solids enters the cyclone through the feed pipe along the tangential direction at a certain pressure, the fluid will form a strong rotating vortex in the cyclone. In this process, the centrifugal force on the solid particles is much greater than that on the liquid, so they are forced to move outward to the wall of the cyclone, and then move downward along the wall, and finally discharged from the bottom flow port. At the same time, the cleaner liquid is pushed toward the central axis due to the smaller centrifugal force, forming an upward vortex and then discharged from the overflow pipe, thereby achieving the purpose of solid-liquid separation. The outflowing wastewater enters the reaction box from the upper end. After the sensor 105 detects the entry of liquid, it transmits the signal to the dosing box controller 01. The dosing box controller 01 controls the first storage room of the dosing box 6 to add organic sulfur to the first drug inlet of the reaction tank. The organic sulfur is stably combined with the heavy metal ions through the sulfur group and undergoes a chemical reaction to form a stable organic metal compound that is not easy to dissolve and forms a solid precipitate in the aqueous solution, thereby achieving the removal of fluoride ions and the precipitation of heavy metals. The second storage room adds liquid polyferric chloride to the second drug inlet of the reaction tank to promote the continuous bridge of the precipitated fine particles to form alum flowers for easy precipitation. The third storage room adds hydrochloric acid to the third drug inlet of the reaction tank to adjust the pH value of the liquid for subsequent storage and discharge. The liquid outlet of the reaction tank 3 is located below the third storage room, and the solid-liquid mixture flows into the upper liquid inlet of the sedimentation tank 4 through the liquid outlet; the sedimentation tank 4 is allowed to settle, and the precipitate is transported from the outlet to the sludge tank 7 by pumping, and the upper clarified liquid overflows through the overflow port and is then transported to the intermediate tank 5 through a pipeline;

[0033] The monitoring system components are all connected to the infinite network. The sensor 206 monitors the pH value, conductivity, and heavy metal content of the treated sewage entering the intermediate tank 5 in real time. The pH electrode outputs an mV signal through the BNC to realize the signal amplification function and converts it into a 0-5V voltage signal. The output voltage signal is converted into the pH value of the solution to be tested according to the standard curve. The voltage is read by the single-chip microcomputer and the conversion is completed according to the calibration curve. The STM32 single-chip microcomputer receives the data and calculates the corresponding TDS value through the internal algorithm of the analysis system. The converted digital signal value is then transmitted to the analysis system for judgment through the infinite network. The data analysis system compares the standard value to determine whether the currently treated wastewater meets the treatment standard. If so, the desulfurization wastewater pre-clarification treatment system is operating normally. Otherwise, it detects whether the dosing box controller 01, controller 102, controller 203 and controller 304 are in normal working condition, otherwise the alarm system is activated. The operator intervenes to adjust valve 111, valve 212, valve 313 and dosing box 6, and then sends a signal to dosing box controller 01, controller 102, controller 203 and controller 304. After receiving the signal, controller 203 and controller 304 control valve 212 and valve 313 to close, and controller 102 controls valve 111 to open. At this time, unqualified wastewater in the intermediate pool 5 will flow back into the reaction pool 3 and be controlled not to flow into the tubular microfiltration membrane filtration assembly 10, and the wastewater in the reaction pool 3 cannot continue to flow into the intermediate pool 5. The dosing box controller 01 controls the adjustment of the reagent content of the dosing box 6 entering the reaction pool 3, and the adjustment scheme data is transmitted to the database for record and archiving. After the adjustment, the sensor 2 continues to monitor. After passing the signal, the controller 203 and controller 304 control valve 212 and valve 313 to open, and the controller 102 controls valve 111 to close.

[0034] The tubular microfiltration membrane filtration assembly 10 further processes the treated sewage flowing out of the intermediate tank 5 through physical separation, removes suspended particles and colloids in the water and puts it into the sludge tank 7 through the upper outlet, and the sewage returns to the second liquid inlet for re-filtration to ensure the filtering effect, and the remaining clarified liquid flows into the water tank 8 through the lower liquid outlet, and the clarified liquid flows out of the water tank 8 for subsequent treatment;

[0035] The sludge pool 7 will receive all the sludge and put it into the vacuum belt dewatering machine through the outlet. The vacuum belt dewatering machine will send the sludge into the filter cloth conveyed by the belt in the equipment. The transverse grooves and the middle through holes on the belt will suck the liquid into the vacuum box. The remaining sludge will pass through the forming area, the washing area and the drying area under vacuum suction to form a qualified filter cake, and finally be sent to the unloading chute in the unloading area and sent to the gypsum warehouse by the transfer belt conveyor.

[0036] The sensor 105 is an electrochemical sensor, which monitors the rates of different reactions of wastewater treatment in the reaction tank 3 in real time by measuring the changes of current or potential in the electrolyte solution, and transmits the data to the database through the network for record and archiving;

[0037] Staff can retrieve the database at any time to view data and evaluate and adjust the initial dosing plan to better improve the system.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desulfurization wastewater pre-clarification treatment system, comprising a pH adjustment tank (1), a wastewater cyclone (2), a reaction tank (3), a sedimentation tank (4), an intermediate tank (5), a dosing box (6), a sludge tank (7), a water tank (8), a vacuum belt dehydrator (9), a tubular microfiltration membrane filtration assembly (10), a valve 1 (11), a valve 2 (12), and a valve 3 (13), characterized in that: The pH adjustment tank (1) and the wastewater cyclone (2) are connected in sequence through pipelines; the liquid outlet of the wastewater cyclone (2) is connected to the first liquid inlet of the reaction tank (3) through a pipeline, the three liquid outlets below the dosing box (6) are connected to the first, second and third drug inlets of the reaction tank (3) through pipelines, the liquid outlet of the reaction tank (3) is connected to the liquid inlet of the sedimentation tank (4) through a pipeline, and a valve 2 (12) is installed on the connected pipelines; the overflow port above the sedimentation tank (4) is connected to the liquid inlet of the intermediate tank (5) through a pipeline, and the outlet below the sedimentation tank (4) is connected to the sludge tank (7) through a pipeline; the intermediate tank The first liquid outlet (5) is connected to the first liquid inlet at the top of the tubular microfiltration membrane filtration component (10) through a pipeline, and a valve 3 (13) is installed on the connected pipeline; the second liquid outlet of the intermediate tank (5) is connected to the second liquid inlet of the reaction tank (3) through a pipeline, and a valve 1 (11) is installed on the connected pipeline; the upper outlet of the tubular microfiltration membrane filtration component (10) is installed with a pipeline connected to the second liquid inlet, and another pipeline is installed to connect to the sludge tank (7); the lower liquid outlet of the tubular microfiltration membrane filtration component (10) is connected to the water tank (8) through a pipeline; the outlet of the sludge tank (7) is connected to the vacuum belt dehydrator (9).

2. A desulfurization wastewater pre-clarification treatment system according to claim 1, characterized in that: The pH adjustment tank (1) is used to receive wastewater from different channels and uniformly adjust it to weak alkalinity for subsequent treatment; the wastewater cyclone (2) performs the first step of solid-liquid separation on the wastewater, separating large particles from the wastewater to prevent subsequent clogging of the pipeline; the vacuum belt dewatering machine (9) is used to dewater sludge, and sends the sludge to the filter cloth conveyed by the belt in the equipment. The transverse grooves and the middle through holes on the belt suck the liquid into the vacuum box. The remaining sludge passes through the forming area, the washing area and the drying area under vacuum suction to form a qualified filter cake, and finally is sent to the unloading trough in the unloading area and sent to the gypsum warehouse by the conveyor belt conveyor; the tubular microfiltration membrane filtration component (10) continues to further treat the treated wastewater flowing out of the intermediate tank (5) through physical separation, removes suspended particles and colloids in the water, and puts it into the sludge tank (7) through the upper outlet, and the wastewater reflux enters the second liquid inlet for re-filtration, and the remaining clarified liquid flows into the water tank (8) through the lower liquid outlet; the clarified liquid flows out of the water tank (8) for subsequent treatment.

3. A desulfurization wastewater pre-clarification treatment system according to claim 1, characterized in that: The reaction tank (3) is a triple system, wherein the first, second and third drug inlets are respectively located directly above the three boxes, and the middle of the drug adding box (6) is divided into three storage rooms by two partitions; the first storage room of the drug adding box (6) adds organic sulfur to the first drug inlet of the reaction tank to achieve the removal of fluoride ions and the precipitation of heavy metals; the second storage room of the drug adding box (6) adds liquid polyferric chloride to the second drug inlet of the reaction tank to promote the continuous bridging of precipitated fine particles to form alum flowers, which is convenient for precipitation; the third storage room of the drug adding box (6) adds hydrochloric acid to the third drug inlet of the reaction tank to adjust the pH value of the liquid for subsequent storage and discharge.

4. A desulfurization wastewater pre-clarification treatment system according to claim 1, characterized in that: The sedimentation tank (4) is used to precipitate the treated wastewater particles flowing out of the reaction tank (3), and to transport the precipitated particles to the sludge tank (7) through the outlet.

5. A desulfurization wastewater pre-clarification treatment system according to claim 1, characterized in that: During the initial processing, the valve 2 (12) and the valve 3 (13) are in an open state, and the valve 1 (11) is in a closed state.

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