Comprehensive utilization system and method for synergistic treatment of concentrated leachate in waste incineration plant

Abstract

According to the comprehensive utilization system and method for cooperative treatment of the leachate concentrated liquor in the waste incineration plant, the concentrated liquor is pumped to the incineration hearth and the lime slurry preparation system to achieve absorption and utilization, and the concentrated liquor is sprayed back to a garbage pit in emergency. The system comprises a concentrated liquor storage tank, a pump, a regulating valve and a backflow and conveying pipeline, the flow of concentrated liquor is controlled through temperature and liquid level signals, and continuous and stable operation is ensured. According to the invention, the treatment cost is reduced, reliable absorption and zero discharge of the concentrated liquor are realized, the operation is simple and reliable, the problem of pipeline blockage is solved, and the blank of similar technologies is filled.

Description

Technical Field

[0001] The present invention relates to the technical field of waste incineration, and in particular to a system and method for comprehensive utilization of leachate concentrate in a waste incineration plant in a coordinated manner. Background Art

[0002] With the acceleration of urbanization, garbage disposal has become an increasingly important environmental issue. As one of the main ways to deal with urban domestic garbage, waste incineration plants produce a large amount of leachate during their operation. After the leachate is treated by nanofiltration or reverse osmosis membranes, a high-concentration concentrate (abbreviated as "concentrate") will be produced. These concentrates contain high concentrations of organic matter, inorganic salts and other difficult-to-degrade substances. Direct discharge will cause serious pollution to the environment.

[0003] At present, most of the treatment of leachate concentrate uses independent sewage treatment processes, such as advanced oxidation technology, reduction treatment, submerged combustion technology, etc. Although these technologies can reduce the pollution level of concentrate to a certain extent, they generally have problems such as high investment cost, high operating cost, and unstable treatment effect. Especially for high-concentration leachate concentrate, it is difficult to meet the direct discharge standard and requires further treatment.

[0004] Therefore, it is necessary to propose a new technical solution to improve the above technical problems. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a system and method for comprehensive utilization of leachate concentrate in a waste incineration plant.

[0006] According to the present invention, a waste incineration plant coordinated treatment leachate concentrate comprehensive utilization system is provided, comprising:

[0007] Concentrate storage tank: used to store the leachate concentrate produced by the leachate treatment system;

[0008] Concentrate pump: connected to the concentrate storage tank through a pipeline, used to pump the leachate concentrate to the subsequent processing unit;

[0009] Concentrate delivery pipeline: connected to the concentrate pump outlet, and equipped with a pressure transmitter and multiple electric regulating valves for controlling the delivery amount and flow direction of the leachate concentrate; the electric regulating valves include a first electric regulating valve, a second electric regulating valve, a third electric regulating valve, a fourth electric regulating valve and a fifth electric regulating valve;

[0010] Concentrate reflux pipeline: connected in parallel with the concentrate delivery pipeline, equipped with an electric regulating valve to reflux the leachate concentrate when needed;

[0011] Back-spray pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and flow meter, and the electric regulating valve is interlocked with the furnace temperature signal, used to spray the concentrated leachate back to the incineration furnace for comprehensive utilization;

[0012] Lime slurry water supply pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and a flow meter, and the electric regulating valve is interlocked with the liquid level signal of the lime slurry preparation tank, used to transport the leachate concentrate to the lime slurry preparation system for comprehensive utilization;

[0013] Emergency delivery pipeline: connected to the concentrate delivery pipeline, equipped with electric valve and isolation valve, used to deliver the concentrate leachate to the garbage pit for emergency treatment when the incineration furnace and lime slurry preparation system cannot absorb the concentrate leachate;

[0014] Cleaning system: includes industrial water pipes and electric regulating valves, used to flush the entire concentrate delivery pipeline before the concentrate pump is shut down.

[0015] Preferably, the leachate concentrate includes the concentrate produced after the leachate is treated by nanofiltration or reverse osmosis membrane, and the high-concentration sewage that cannot be discharged directly and meets the discharge standards after the concentrate is softened, reduced and organic matter extracted;

[0016] The pressure transmitter in the concentrate delivery pipeline is interlocked with the electric regulating valve on the concentrate return pipeline to adjust the reflux amount of the leachate concentrate according to the concentrate delivery pressure.

[0017] Preferably, it also includes a liquid level meter installed on the concentrate storage tank, which is used to monitor the liquid level of the leachate concentrate in the storage tank and control the transportation and treatment of the leachate concentrate;

[0018] The electric regulating valve, flow meter, pressure transmitter, furnace temperature signal, and lime slurry preparation tank liquid level signal are all connected to the control system for automatic control and remote monitoring.

[0019] Preferably, the concentrate storage tank is connected to the concentrate pump via a concentrate outlet pipe, a cut-off valve F1 and a filter are sequentially provided between the concentrate storage tank and the concentrate pump, an industrial water pipe is connected between the cut-off valve F1 and the filter, and a first electric regulating valve is provided on the industrial water pipe.

[0020] Preferably, a second electric regulating valve is provided at the outlet of the concentrate pump, and the outlet ends of the second electric regulating valve are respectively connected to the concentrate reflux pipeline and the concentrate delivery pipeline, the concentrate reflux pipeline is provided with a third electric regulating valve, and the concentrate delivery pipeline is provided with a pressure transmitter; the pressure transmitter is interlocked with the third electric regulating valve, and the concentrate pressurized by the concentrate pump is controlled by the second electric regulating valve and the third electric regulating valve to adjust the concentrate utilization and concentrate reflux amount to the terminal.

[0021] Preferably, the concentrated liquid delivery pipeline is connected to the back-spray pipe, and the back-spray pipe is provided with a shut-off valve F2, a first flow meter and a fourth electric regulating valve in sequence, and is finally connected to the furnace. The fourth electric regulating valve is interlocked with the furnace temperature signal, and the comprehensive utilization amount of the concentrated liquid sprayed back to the furnace is controlled by the electric regulating valve.

[0022] Preferably, the concentrated liquid delivery pipe is connected to the lime slurry water replenishment pipe, and the lime slurry water replenishment pipe is provided with a shut-off valve F3, a second flow meter and a fifth electric regulating valve in sequence, and is finally connected to the lime slurry preparation tank. The electric valve is interlocked with the liquid level signal of the lime slurry preparation tank, and the comprehensive utilization amount of the concentrated liquid to the lime slurry preparation tank is controlled by the fifth electric regulating valve.

[0023] Preferably, the concentrated liquid delivery pipe is connected to the emergency delivery pipeline, on which a shut-off valve F4 and an electric valve are provided in sequence, and finally connected to the garbage pit; when the furnace and the lime slurry preparation tank are unable to absorb the concentrated liquid due to maintenance, the concentrated liquid is transported to the garbage pit for emergency treatment.

[0024] Preferably, before the concentrate pump is shut down each time, the first electric regulating valve should be opened, the isolation valve F1 should be closed, and the entire concentrate delivery pipeline should be flushed with industrial water.

[0025] The present invention also provides a method for co-processing concentrated leachate in a waste incineration plant, the method using the above-mentioned system for co-processing concentrated leachate in a waste incineration plant, and the method comprising the following steps:

[0026] Step S1: storing the concentrated solution generated by the leachate treatment system in a concentrated solution storage tank;

[0027] Step S2: pumping the concentrate to the concentrate delivery pipeline by means of a concentrate pump;

[0028] Step S3: According to the system operation status and terminal processing requirements, the concentrated liquid is controlled by an electric regulating valve to flow to the incineration furnace for back spraying, to the lime slurry preparation system for comprehensive utilization, or to flow back to the concentrated liquid storage tank;

[0029] Step S4: in an emergency, the concentrated liquid is transported to a garbage pit for emergency treatment;

[0030] Step S5: before the concentrate pump is shut down, the entire concentrate delivery pipeline is flushed through the cleaning system.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. Through the method of the present invention, a comprehensive utilization method of leachate concentrate is proposed, which is to be consumed in coordination with the furnace of the incineration plant and the lime slurry preparation system, thereby greatly reducing the treatment cost of the leachate concentrate and achieving reliable consumption and zero discharge of the leachate concentrate;

[0033] 2. The present invention controls the comprehensive utilization of concentrated liquid by interlocking the furnace temperature signal of the incineration plant and the liquid level signal of the lime slurry preparation tank. The operation is simple and the system is stable and reliable.

[0034] 3. In the present invention, by separately setting up the concentrate reflux pipe, the second electric regulating valve and the third electric regulating valve, continuous adjustment can be made according to the comprehensive utilization of the terminal, so that the system can operate continuously and uninterruptedly;

[0035] 4. The present invention utilizes industrial water to flush the system, thereby solving the problem of scaling and clogging of the concentrated liquid delivery pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 It is a structural principle diagram of the present invention.

[0038] in:

[0039] Concentrate storage tank 1 Fourth electric regulating valve 16

[0040] Liquid level meter 2 Furnace temperature signal 17

[0041] Concentrate outlet pipe 3 furnace 18

[0042] First electric regulating valve 4 Lime slurry water supply pipe 19

[0043] Industrial water pipe 5 Second flow meter 20

[0044] Filter 6 Fifth electric regulating valve 21

[0045] Industrial water 7 Lime slurry preparation tank level signal 22

[0046] Concentrate pump 8 Lime slurry preparation tank 23

[0047] Second electric regulating valve 9 Emergency delivery pipe 24

[0048] The third electric regulating valve 10 electric valve 25

[0049] Concentrate return pipe 11 Garbage pit 26

[0050] Concentrate delivery pipe 12 Isolation valve F1

[0051] Pressure transmitter 13 Block valve F2

[0052] Back spray pipe 14 Isolation valve F3

[0053] First flow meter 15 Isolation valve F4 DETAILED DESCRIPTION

[0054] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0055] Embodiment 1:

[0056] Reference Figure 1 According to the present invention, a waste incineration plant coordinated treatment leachate concentrate comprehensive utilization system comprises:

[0057] Concentrate storage tank: used to store the concentrate of leachate produced by the leachate treatment system;

[0058] Concentrate pump: connected to the concentrate storage tank through a pipeline, used to pump the leachate concentrate to a subsequent processing unit;

[0059] Concentrate delivery pipeline: connected to the concentrate pump outlet, and equipped with a pressure transmitter and multiple electric regulating valves for controlling the delivery amount and flow direction of the leachate concentrate; the electric regulating valves include a first electric regulating valve, a second electric regulating valve, a third electric regulating valve, a fourth electric regulating valve and a fifth electric regulating valve;

[0060] Concentrate reflux pipeline: connected in parallel with the concentrate delivery pipeline, equipped with an electric regulating valve to reflux the leachate concentrate when needed;

[0061] Back-spray pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and flow meter, and the electric regulating valve is interlocked with the furnace temperature signal, used to spray the concentrated leachate back to the incineration furnace for comprehensive utilization;

[0062] Lime slurry water supply pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and a flow meter, and the electric regulating valve is interlocked with the liquid level signal of the lime slurry preparation tank, used to transport the leachate concentrate to the lime slurry preparation system for comprehensive utilization;

[0063] Emergency delivery pipeline: connected to the concentrate delivery pipeline, equipped with electric valve and isolation valve, used to deliver the concentrate leachate to the garbage pit for emergency treatment when the incineration furnace and lime slurry preparation system cannot absorb the concentrate leachate;

[0064] Cleaning system: includes industrial water pipes and electric regulating valves, used to flush the entire concentrate delivery pipeline before the concentrate pump is shut down.

[0065] Leachate concentrate includes concentrate produced after leachate is treated by nanofiltration or reverse osmosis membrane, and high-concentration wastewater that cannot be directly discharged in compliance with discharge standards after softening, reducing and extracting organic matter from the concentrate; the pressure transmitter in the concentrate delivery pipeline is interlocked with the electric regulating valve on the concentrate return pipeline to adjust the return volume of the leachate concentrate according to the concentrate delivery pressure; the system also includes a level meter installed on the concentrate storage tank to monitor the liquid level of the leachate concentrate in the storage tank and control the delivery and treatment of the leachate concentrate; the electric regulating valve, flow meter, pressure transmitter and furnace temperature signal and lime slurry preparation tank level signal are all connected to the control system for automatic control and remote monitoring.

[0066] The concentrate storage tank is connected to the concentrate pump through a concentrate outlet pipe, and a shutoff valve F1 and a filter are sequentially arranged between the concentrate storage tank and the concentrate pump, an industrial water pipe is connected between the shutoff valve F1 and the filter, and a first electric regulating valve is arranged on the industrial water pipe; a second electric regulating valve is arranged at the outlet of the concentrate pump, and the outlet ends of the second electric regulating valve are respectively connected to a concentrate reflux pipeline and a concentrate delivery pipeline, a third electric regulating valve is arranged on the concentrate reflux pipeline, and a pressure transmitter is arranged on the concentrate delivery pipeline; the pressure transmitter is interlocked with the third electric regulating valve, and the concentrate pressurized by the concentrate pump is controlled by the second electric regulating valve and the third electric regulating valve to adjust the concentrate utilization and concentrate reflux amount to the terminal; the concentrate delivery pipeline is connected to the return spray pipe, and a shutoff valve F2, a first flow meter and a fourth electric regulating valve are sequentially arranged on the return spray pipe, and finally connected to the furnace The fourth electric regulating valve is interlocked with the furnace temperature signal, and the concentrated liquid is controlled by the electric regulating valve to spray back to the furnace for comprehensive utilization; the concentrated liquid delivery pipe is connected to the lime slurry water supply pipe, and the lime slurry water supply pipe is provided with a shut-off valve F3, a second flow meter and a fifth electric regulating valve in sequence, and finally connected to the lime slurry preparation tank, and the electric valve is interlocked with the liquid level signal of the lime slurry preparation tank, and the concentrated liquid is controlled to reach the lime slurry preparation tank for comprehensive utilization through the fifth electric regulating valve; the concentrated liquid delivery pipe is connected to the emergency delivery pipeline, and the emergency delivery pipeline is provided with a shut-off valve F4 and an electric valve in sequence, and finally connected to the garbage pit; when the furnace and the lime slurry preparation tank are unable to absorb the concentrated liquid due to maintenance, the concentrated liquid is delivered to the garbage pit for emergency treatment; before each shutdown of the concentrated liquid pump, the first electric regulating valve should be opened, the shut-off valve F1 should be closed, and the entire concentrated liquid delivery pipeline should be flushed with industrial water.

[0067] The present invention also provides a method for co-processing concentrated leachate in a waste incineration plant, the method using the above-mentioned system for co-processing concentrated leachate in a waste incineration plant, and the method comprising the following steps:

[0068] Step S1: storing the concentrated solution generated by the leachate treatment system in a concentrated solution storage tank;

[0069] Step S2: pumping the concentrate to the concentrate delivery pipeline by means of a concentrate pump;

[0070] Step S3: According to the system operation status and terminal processing requirements, the concentrated liquid is controlled by an electric regulating valve to flow to the incineration furnace for back spraying, to the lime slurry preparation system for comprehensive utilization, or to flow back to the concentrated liquid storage tank;

[0071] Step S4: in an emergency, the concentrated liquid is transported to a garbage pit for emergency treatment;

[0072] Step S5: before the concentrate pump is shut down, the entire concentrate delivery pipeline is flushed through the cleaning system.

[0073] Embodiment 2:

[0074] The present invention is a comprehensive utilization system for the coordinated treatment of leachate concentrate in a waste incineration plant. In the present invention, it is proposed that the leachate concentrate is comprehensively utilized by being pumped to the furnace of the incineration plant and disposed in the lime slurry preparation system (sprayed back to the garbage pit in an emergency). It also provides a process design and control method from the leachate concentrate storage tank to the terminal utilization method, realizing the reliable disposal and zero emission of the leachate concentrate.

[0075] Step 1: As shown in the attached figure, the concentrated liquid generated by the incineration plant leachate treatment system is stored in a concentrated liquid storage tank 1, and the concentrated liquid storage tank 1 is provided with a liquid level meter 2. The concentrated liquid tank is connected to the concentrated liquid pump 8 through a concentrated liquid outlet pipe 3, and a cut-off valve F1 and a filter 6 are provided between the concentrated liquid tank 1 and the concentrated liquid pump 8 in sequence, and an industrial water pipe 5 is connected between the cut-off valve F1 and the filter 6, and an electric regulating valve 4 is provided on the industrial water pipe 5.

[0076] Step 2: The outlet of the concentrate pump 8 is provided with an electric regulating valve 9, and the outlet end of the electric regulating valve 9 is respectively connected to the concentrate return pipe 11 and the concentrate delivery pipe 12, the concentrate return pipe 11 is provided with an electric regulating valve 10, and the concentrate delivery pipe 12 is provided with a pressure transmitter 13. The pressure transmitter 13 is interlocked with the electric regulating valve 10, and the concentrate pressurized by the concentrate pump 8 is controlled by the electric regulating valve 9 and the electric regulating valve 10 to control the concentrate utilization amount and concentrate return amount to the terminal.

[0077] Step 3 (comprehensive utilization method 1): the concentrated liquid delivery pipe 12 is connected to the back-spray pipe 14, and the back-spray pipe 14 is provided with a cut-off valve F2, a flow meter 15 and an electric regulating valve 16 in sequence, and finally connected to the furnace 18. The electric regulating valve 16 is interlocked with the furnace temperature signal 17. The concentrated liquid is controlled by the electric regulating valve 16 to spray back to the furnace 18 for comprehensive utilization: when the opening of the electric regulating valve 16 increases, the flow rate of the concentrated liquid sprayed back to the furnace increases (the flow meter 15 displays the corresponding flow value), at this time, the furnace is cooled due to the evaporation of the concentrated liquid, and the furnace temperature decreases (corresponding to the temperature value of the furnace temperature signal 17). When the furnace temperature is lower than the lower limit of the normal operating temperature, the temperature signal 17 alarms, at this time, the electric regulating valve 16 reduces the opening, the corresponding pipeline pressure increases (the corresponding pressure value of the pressure transmitter 13), then the electric regulating valve 10 increases the opening, the excess concentrated liquid flows back to the concentrated liquid storage tank 1, the flow rate of the concentrated liquid sprayed back to the furnace decreases, and the furnace temperature rises.

[0078] Step 4 (comprehensive utilization method 2): the concentrated solution delivery pipe 12 is connected to the lime slurry water supply pipe 19, and the lime slurry water supply pipe 19 is provided with a cut-off valve F3, a flow meter 20 and an electric valve 21 in sequence, and finally connected to the lime slurry preparation tank 23. The electric valve 21 is interlocked with the lime slurry preparation tank liquid level signal 22. The concentrated solution is controlled by the electric regulating valve 21 to control the comprehensive utilization amount of the lime slurry preparation tank: when the opening of the electric regulating valve 21 increases, the concentrated solution flow rate recycled to the lime slurry preparation tank 23 increases (the flow meter 20 displays the corresponding flow value), when the lime slurry preparation tank 23 liquid level is too high (the lime slurry preparation tank liquid level signal 22 displays), the liquid level signal 22 alarms, and the electric regulating valve 21 reduces the opening, the corresponding pipeline pressure increases (the corresponding pressure value of the pressure transmitter 13), and the electric regulating valve 10 increases the opening, the excess concentrated solution flows back to the concentrated solution storage tank 1, and the concentrated solution flow rate recycled to the lime slurry preparation tank 23 is reduced. .

[0079] Step 5 (emergency condition): The concentrated solution delivery pipe 12 is connected to the emergency delivery pipe 24, which is provided with a cut-off valve F4 and an electric valve 25 in sequence, and finally connected to the garbage pit 26. When the furnace 18 and the lime slurry preparation tank 23 are unable to absorb the concentrated solution due to maintenance, the concentrated solution is delivered to the garbage pit 26 for emergency treatment.

[0080] Step 6: Before each shutdown of the concentrate pump, the electric regulating valve 4 should be opened, the isolation valve F1 should be closed, and the entire concentrate delivery pipeline should be flushed with industrial water 7 to prevent pipeline blockage.

[0081] In all the above steps, the leachate concentrate includes the concentrate produced after the leachate is treated by nanofiltration or reverse osmosis membrane, as well as the high-concentration wastewater that cannot be directly discharged after softening, reducing and extracting organic matter from the concentrate.

[0082] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0083] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0084] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A system for comprehensive utilization of leachate concentrate in a waste incineration plant, characterized in that: include: Concentrate storage tank: used to store the concentrate of leachate produced by the leachate treatment system; Concentrate pump: connected to the concentrate storage tank through a pipeline, used to pump the leachate concentrate to a subsequent processing unit; Concentrate delivery pipeline: connected to the concentrate pump outlet, and equipped with a pressure transmitter and multiple electric regulating valves for controlling the delivery amount and flow direction of the leachate concentrate; the electric regulating valves include a first electric regulating valve, a second electric regulating valve, a third electric regulating valve, a fourth electric regulating valve and a fifth electric regulating valve; Concentrate reflux pipeline: connected in parallel with the concentrate delivery pipeline, equipped with an electric regulating valve to reflux the leachate concentrate when needed; Back-spray pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and flow meter, and the electric regulating valve is interlocked with the furnace temperature signal, used to spray the concentrated leachate back to the incineration furnace for comprehensive utilization; Lime slurry water supply pipe: connected to the concentrated liquid delivery pipeline, equipped with an electric regulating valve and a flow meter, and the electric regulating valve is interlocked with the liquid level signal of the lime slurry preparation tank, used to transport the leachate concentrate to the lime slurry preparation system for comprehensive utilization; Emergency delivery pipeline: connected to the concentrate delivery pipeline, equipped with electric valve and isolation valve, used to deliver the concentrate leachate to the garbage pit for emergency treatment when the incineration furnace and lime slurry preparation system cannot absorb the concentrate leachate; Cleaning system: includes industrial water pipes and electric regulating valves, used to flush the entire concentrate delivery pipeline before the concentrate pump is shut down.

2. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The leachate concentrate includes the concentrate produced after the leachate is treated by nanofiltration or reverse osmosis membrane, and the high-concentration sewage that cannot be discharged directly after softening, reducing and extracting organic matter from the concentrate; The pressure transmitter in the concentrate delivery pipeline is interlocked with the electric regulating valve on the concentrate return pipeline to adjust the reflux amount of the leachate concentrate according to the concentrate delivery pressure.

3. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: It also includes a liquid level meter installed on the concentrate storage tank to monitor the liquid level of the leachate concentrate in the storage tank and control the transportation and treatment of the leachate concentrate; The electric regulating valve, flow meter, pressure transmitter, furnace temperature signal, and lime slurry preparation tank liquid level signal are all connected to the control system for automatic control and remote monitoring.

4. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The concentrate storage tank is connected to the concentrate pump via a concentrate outlet pipe, a cut-off valve F1 and a filter are sequentially arranged between the concentrate storage tank and the concentrate pump, an industrial water pipe is connected between the cut-off valve F1 and the filter, and a first electric regulating valve is arranged on the industrial water pipe.

5. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The concentrate pump outlet is provided with a second electric regulating valve, and the outlet ends of the second electric regulating valve are respectively connected to the concentrate reflux pipeline and the concentrate delivery pipeline, the concentrate reflux pipeline is provided with a third electric regulating valve, and the concentrate delivery pipeline is provided with a pressure transmitter; the pressure transmitter is interlocked with the third electric regulating valve, and the concentrate pressurized by the concentrate pump is controlled by the second electric regulating valve and the third electric regulating valve to adjust the concentrate utilization and concentrate reflux amount to the terminal.

6. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The concentrated liquid delivery pipeline is connected to the back-spray pipe, on which the isolation valve F2, the first flow meter and the fourth electric regulating valve are arranged in sequence, and finally connected to the furnace. The fourth electric regulating valve is interlocked with the furnace temperature signal, and the comprehensive utilization amount of the concentrated liquid sprayed back to the furnace is controlled by the electric regulating valve.

7. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The concentrated liquid delivery pipe is connected to the lime slurry water replenishment pipe, on which the shut-off valve F3, the second flow meter and the fifth electric regulating valve are provided in sequence, and finally connected to the lime slurry preparation tank. The electric valve is interlocked with the liquid level signal of the lime slurry preparation tank, and the comprehensive utilization amount of the concentrated liquid to the lime slurry preparation tank is controlled by the fifth electric regulating valve.

8. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: The concentrated liquid delivery pipe is connected to the emergency delivery pipeline, which is provided with a shutoff valve F4 and an electric valve in sequence, and is finally connected to the garbage pit; when the furnace and the lime slurry preparation tank are unable to absorb the concentrated liquid due to maintenance, the concentrated liquid is transported to the garbage pit for emergency treatment.

9. The system for comprehensive utilization of concentrated leachate from a waste incineration plant according to claim 1, characterized in that: Before the concentrate pump is shut down each time, the first electric regulating valve should be opened, the isolation valve F1 should be closed, and the entire concentrate delivery pipeline should be flushed with industrial water.

10. A method for co-processing leachate concentrate in a waste incineration plant, characterized in that: The method uses the waste incineration plant coordinated treatment leachate concentrate comprehensive utilization system as described in any one of claims 1 to 9, and the method comprises the following steps: Step S1: storing the concentrated solution generated by the leachate treatment system in a concentrated solution storage tank; Step S2: pumping the concentrate to the concentrate delivery pipeline by means of a concentrate pump; Step S3: According to the system operation status and terminal processing requirements, the concentrated liquid is controlled by an electric regulating valve to flow to the incineration furnace for back spraying, to the lime slurry preparation system for comprehensive utilization, or to flow back to the concentrated liquid storage tank; Step S4: in an emergency, the concentrated liquid is transported to a garbage pit for emergency treatment; Step S5: before the concentrate pump is shut down, the entire concentrate delivery pipeline is flushed through the cleaning system.

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