Limestone-gypsum desulfurization wastewater integrated treatment device

Abstract

The utility model provides a limestone-gypsum method desulfurization wastewater integrated treatment device which comprises an efficient concentration clarifier body, an efficient reactor is installed at the top of the efficient concentration clarifier body, a wastewater inlet pipe, a chemical hopper and a stirrer are installed at the top of the efficient reactor, and a chemical feeder is installed on the outer side surface of the chemical hopper. A blanking pipe is arranged between the high-efficiency reactor and the high-efficiency concentration clarifier main body, an inclined pipe precipitator and a baffle plate precipitator are arranged in the high-efficiency concentration clarifier main body, a sludge hopper is arranged at the bottom of the high-efficiency concentration clarifier main body, and a clear water pipe is arranged on the high-efficiency concentration clarifier main body; when wastewater is treated, clear water and sludge can be separated, the wastewater treatment process is greatly simplified, the investment cost and the operation cost are further saved, actual popularization is facilitated, large-particle impurities which are not completely precipitated can be intercepted through the arranged overflow grating, and solid particles are prevented from flowing out of the clear water pipe along with the clear water.

Description

Limestone-gypsum desulfurization wastewater integrated treatment device Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to an integrated treatment device for desulfurization wastewater using the limestone-gypsum method. Background Technology

[0002] The limestone-gypsum wet desulfurization process, with its high desulfurization efficiency, stable operation, and strong adaptability to flue gas conditions, has become the most widely used and technologically mature process in China. However, this process also has a significant drawback: a certain amount of wastewater needs to be discharged into the system periodically during operation. This wastewater needs to be treated promptly by appropriate treatment devices. However, the existing technology has the following shortcomings in its use:

[0003] In the early stages, the wastewater treatment process of limestone-gypsum wet desulfurization systems mostly adopted a three-stage process of neutralization, sedimentation, and flocculation. This process is relatively complex and has high investment costs, which brings a significant cost burden to production enterprises. At the same time, the sedimentation rate of solids and suspended matter in the wastewater is slow.

[0004] Therefore, there is an urgent need for an integrated treatment device for desulfurization wastewater using the limestone-gypsum method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problem that the existing wastewater treatment processes of limestone-gypsum wet desulfurization systems mostly adopt a three-stage process of neutralization, sedimentation, and flocculation. This process is relatively complex, has high investment costs, and imposes a significant cost burden on production enterprises. At the same time, it also has the problem of slow sedimentation of solids and suspended matter in the wastewater.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An integrated treatment device for desulfurization wastewater from limestone-gypsum process is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] An integrated treatment device for desulfurization wastewater using the limestone-gypsum method includes a high-efficiency thickener and clarifier body. A high-efficiency reactor is installed on top of the high-efficiency thickener and clarifier body. A wastewater inlet pipe, a reagent hopper, and a stirrer are installed on top of the high-efficiency reactor. A reagent feeder is installed on the outer surface of the reagent hopper. A discharge pipe is installed between the high-efficiency reactor and the high-efficiency thickener and clarifier body. An inclined tube settler and a baffle plate settler are installed inside the high-efficiency thickener and clarifier body. A sludge hopper is installed at the bottom of the high-efficiency thickener and clarifier body. A clear water pipe is installed on the high-efficiency thickener and clarifier body, and a valved sludge pipe is installed at the bottom of the sludge hopper.

[0010] As a preferred technical solution of this application, an overflow grid is installed inside the main body of the high-efficiency concentrator near the top wall.

[0011] As a preferred technical solution of this application, the agitator blades are located inside the high-efficiency reactor.

[0012] As a preferred technical solution of this application, the baffle plate settler is located directly above the sludge hopper, the inclined tube settler is located directly above the baffle plate settler, and the overflow grid is located directly above the inclined tube settler.

[0013] As a preferred technical solution of this application, the end of the feed pipe away from the high-efficiency reactor extends into the middle of the high-efficiency concentrator and clarifier body, and the feed pipe passes through the inclined tube precipitator and the baffle plate precipitator.

[0014] As a preferred technical solution of this application, the clear water pipe is installed on the outer surface of the main body of the high-efficiency thickener and clarifier near the top, and the clear water pipe is located above the inclined tube sedimentator.

[0015] As a preferred technical solution of this application, a bracket is installed on the outer surface of the main body of the high-efficiency concentrator and clarifier.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. By using the high-efficiency thickener and clarifier body, high-efficiency reactor, reagent hopper, agitator, reagent feeder, discharge pipe, inclined tube settler, baffle plate settler, sludge hopper, and clear water pipe and sludge pipe in combination, clear water and sludge can be separated, the sedimentation rate of solids in wastewater can be improved, the wastewater treatment process can be greatly simplified, investment costs and operating costs can be further saved, and it is conducive to practical promotion.

[0019] 2. The overflow grid can intercept larger particles of impurities that have not settled completely, preventing these solid particles from flowing out of the clean water pipe with the clean water, ensuring the clarity of the effluent, achieving further solid-liquid separation, and ensuring the treatment effect. Attached Figure Description

[0020] Figure 1 is a schematic cross-sectional view of the integrated limestone-gypsum desulfurization wastewater treatment device provided in this application.

[0021] Figure 2 is a top view of the high-efficiency reactor in the integrated limestone-gypsum desulfurization wastewater treatment device provided in this application.

[0022] Figure 3 is a schematic diagram of the overall structure of the high-efficiency reactor in the integrated limestone-gypsum desulfurization wastewater treatment device provided in this application.

[0023] Figure 4 is a schematic diagram of the agitator in the integrated limestone-gypsum desulfurization wastewater treatment device provided in this application.

[0024] The image shows:

[0025] 1. High-efficiency thickener and clarifier body; 2. High-efficiency reactor; 3. Wastewater inlet pipe; 4. Reagent hopper; 5. Agitator; 6. Reagent feeder; 7. Drop pipe; 8. Inclined tube settler; 9. Baffle plate settler; 10. Sludge hopper; 11. Clean water pipe; 12. Sludge pipe with valve; 13. Overflow bar; 14. Support frame. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Example:

[0029] As shown in Figures 1-4, the integrated treatment device for desulfurization wastewater using the limestone-gypsum method proposed in this embodiment includes a high-efficiency thickener and clarifier body 1. A high-efficiency reactor 2 is installed on the top of the high-efficiency thickener and clarifier body 1. A wastewater inlet pipe 3, a reagent hopper 4, and a stirrer 5 are installed on the top of the high-efficiency reactor 2. A reagent feeder 6 is installed on the outer surface of the reagent hopper 4. A discharge pipe 7 is installed between the high-efficiency reactor 2 and the high-efficiency thickener and clarifier body 1. An inclined tube settler 8 and a baffle plate settler 9 are installed inside the high-efficiency thickener and clarifier body 1. A sludge hopper 10 is installed at the bottom of the high-efficiency thickener and clarifier body 1. A clear water pipe 11 is installed on the high-efficiency thickener and clarifier body 1. A sludge pipe 12 with a valve is installed at the bottom of the sludge hopper 10.

[0030] The wastewater to be treated is injected into the high-efficiency reactor 2 through the wastewater inlet pipe 3. Dry powder reagents are added to the high-efficiency reactor 2 via the reagent feeder 6 and reagent hopper 4. The agitator 5 is started, stirring the wastewater in the high-efficiency reactor 2 to mix and react with the dry powder reagents. When the wastewater level is higher than the discharge pipe 7, the mixed wastewater is guided into the high-efficiency thickener and clarifier body 1 through the discharge pipe 7. As the water volume increases, the wastewater gradually passes through the baffle plate settler 9 and the inclined tube settler 8. In the inclined tube settler 8, the inclined tubes increase the settling surface. The sedimentation process allows the precipitates in the wastewater to settle quickly into the sludge hopper 10. The baffle plate sedimentator 9 further slows down the water flow and changes its direction through the baffle structure, causing the unprecipitated fine particles to settle. During the upward movement of the wastewater, it can fully mix and react with the reagents, achieving the separation of clean water and sludge. The qualified clean water at the top is discharged from the clean water pipe 11, and the sludge in the sludge hopper 10 can be discharged through the sludge pipe 12 with a valve, which facilitates subsequent dewatering treatment. Overall, the wastewater treatment process is greatly simplified, further saving investment and operating costs, and is conducive to practical promotion.

[0031] As shown in Figure 1, an overflow grid 13 is installed near the top wall inside the main body 1 of the high-efficiency concentration and clarifier. The qualified clear water in the upper part of the main body 1 passes through the overflow grid 13 and is discharged from the clear water pipe 11. The overflow grid 13 can intercept larger particles of impurities that have not been completely settled, preventing these solid particles from being discharged from the clear water pipe 11 with the clear water, ensuring the clarity of the effluent, and achieving further solid-liquid separation.

[0032] As shown in Figures 1 and 4, the agitator blades on the stirrer 5 are located inside the high-efficiency reactor 2. Under the action of the stirrer 5, the wastewater in the high-efficiency reactor 2 can be stirred, so that the wastewater and dry powder reagent can be mixed and reacted.

[0033] As shown in Figure 1, the baffle plate settler 9 is located directly above the sludge hopper 10, the inclined tube settler 8 is located directly above the baffle plate settler 9, and the overflow grid 13 is located directly above the inclined tube settler 8. In the inclined tube settler 8, the inclined tubes increase the settling area, allowing the sediment in the wastewater to quickly settle into the sludge hopper 10. The baffle plate settler 9 further slows down the water flow and changes the flow direction through the baffle structure, causing the unsettled fine particles to settle down.

[0034] As shown in Figure 1, the end of the feed pipe 7 away from the high-efficiency reactor 2 extends into the middle of the high-efficiency thickener and clarifier body 1, and the feed pipe 7 passes through the inclined tube precipitator 8 and the baffle plate precipitator 9.

[0035] As shown in Figure 1, the clear water pipe 11 is installed on the outer surface of the main body 1 of the high-efficiency thickener and clarifier near the top, and the clear water pipe 11 is located above the inclined tube sedimentator 8.

[0036] As shown in Figure 1, a bracket 14 is installed on the outer surface of the main body 1 of the high-efficiency concentrator and clarifier.

[0037] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. An integrated treatment device for desulfurization wastewater from limestone-gypsum process, comprising a high-efficiency thickener and clarifier body (1), characterized in that, The high-efficiency thickener and clarifier body (1) is equipped with a high-efficiency reactor (2) on top. The high-efficiency reactor (2) is equipped with a wastewater inlet pipe (3), a reagent hopper (4) and a stirrer (5) on top. A reagent feeder (6) is installed on the outer surface of the reagent hopper (4). A discharge pipe (7) is installed between the high-efficiency reactor (2) and the high-efficiency thickener and clarifier body (1). An inclined tube sedimentator (8) and a baffle plate sedimentator (9) are installed inside the high-efficiency thickener and clarifier body (1). A sludge hopper (10) is installed at the bottom of the high-efficiency thickener and clarifier body (1). A clear water pipe (11) is installed on the high-efficiency thickener and clarifier body (1). A sludge pipe with a valve (12) is installed at the bottom of the sludge hopper (10).

2. The integrated limestone-gypsum desulfurization wastewater treatment device according to claim 1, characterized in that, An overflow grille (13) is installed inside the main body (1) of the high-efficiency concentrator near the top wall.

3. The integrated limestone-gypsum desulfurization wastewater treatment device according to claim 1, characterized in that, The agitator blades on the stirrer (5) are located inside the high-efficiency reactor (2).

4. The integrated limestone-gypsum desulfurization wastewater treatment device according to claim 2, characterized in that, The baffle plate settler (9) is located directly above the sludge hopper (10), the inclined tube settler (8) is located directly above the baffle plate settler (9), and the overflow grid (13) is located directly above the inclined tube settler (8).

5. The integrated limestone-gypsum desulfurization wastewater treatment device according to claim 1, characterized in that, The end of the feed pipe (7) away from the high-efficiency reactor (2) extends into the middle of the high-efficiency concentrator (1) and the feed pipe (7) passes through the inclined tube precipitator (8) and the baffle plate precipitator (9).

6. The integrated treatment device for desulfurization wastewater using the limestone-gypsum method according to claim 1, characterized in that, The clear water pipe (11) is installed on the outer surface of the high-efficiency thickener and clarifier body (1) near the top, and the clear water pipe (11) is located above the inclined tube sedimentator (8).

7. The integrated treatment device for desulfurization wastewater using the limestone-gypsum method according to claim 1, characterized in that, A bracket (14) is installed on the outer surface of the main body (1) of the high-efficiency concentrator.

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