Desulfurization wastewater treatment system

Abstract

The utility model provides a desulfurization wastewater treatment system, which relates to the technical field of wastewater purification, and comprises a water outlet tank, an ash fluorine-reducing stirring tank, a fluorine-reducing filtering tank and a five-connection pool, a rack is arranged on one side of the water outlet tank, the ash fluorine-reducing stirring tank is arranged at the upper part in the rack, an ash feeding pipeline is arranged on the side wall of one end of the ash fluorine-reducing stirring tank, and the fluorine-reducing filtering tank is arranged on the side wall of the other end of the ash fluorine-reducing stirring tank. A stirring mechanism is arranged in the ash fluorine-reducing stirring tank handle, a fluorine-reducing filtering tank is arranged on the lower portion in the rack, and the fluorine-reducing filtering tank is connected with a five-connection pool through a second conveying unit; according to the device disclosed by the utility model, the ash fluorine-reducing stirring tank and the fluorine-reducing filtering tank are additionally arranged between the water outlet tank and the five-connection pool, the stirring mechanism in the ash fluorine-reducing stirring tank can mix and stir desulfurization wastewater and ash in the ash fluorine-reducing stirring tank, and fluoride in the desulfurization wastewater is removed by utilizing the ash; and the fluorine-reducing filtering tank can filter and classify the desulfurization wastewater and ash, so that the fluoride removal difficulty can be greatly reduced, and the consumption of a fluorine removal agent can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater purification technical field especially relates to desulfurization wastewater treatment system. BACKGROUND

[0002] Desulfurization wastewater mainly comes from flue gas and desulfurizer or process water, wherein the pollution component is very much and mixes many different impurities, therefore does not pass through desulfurization wastewater zero emission system and carries out effective treatment to cause the corrosion of various impurities to pipeline or equipment and influences normal use.

[0003] Fluoride in desulfurization wastewater is also a kind of impurity that needs to be excluded, and the defluorination of wastewater is generally removed by chemical precipitation method. Because of the influence of precipitation balance, if the desulfurization wastewater is directly treated by chemical precipitation, although most of the fluorine can be removed, a large amount of defluorination agent will be consumed. If the content of fluoride is reduced before the evolution water, the removal rate of fluoride will be increased, and the use of defluorination agent will be reduced. Therefore, the desulfurization wastewater treatment system is proposed to solve the problems in the prior art. SUMMARY

[0004] In view of the above problems, the purpose of the utility model is to provide a desulfurization wastewater treatment system, which is provided with an ash defluorination stirring tank and a defluorination filter tank between the water outlet tank and the five-tank pool. The stirring mechanism in the ash defluorination stirring tank can mix and stir the desulfurization wastewater and the ash in the ash defluorination stirring tank. The fluoride in the desulfurization wastewater is removed by the ash. The defluorination filter tank can filter and classify the desulfurization wastewater and the ash, which can greatly reduce the difficulty of fluoride removal and the consumption of defluorination agent.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The desulfurization wastewater treatment system comprises a water outlet tank, an ash defluorination stirring tank, a defluorination filter tank and a five-tank pool. The water outlet tank is provided with a rack on one side. The rack is provided with the ash defluorination stirring tank above the inside. The ash defluorination stirring tank is provided with an ash feeding pipeline on one end of the side wall. The ash defluorination stirring tank is provided with a stirring mechanism in the inside. The rack is provided with the defluorination filter tank below the inside. The first conveying unit of the water outlet tank is connected to the inside above the ash defluorination stirring tank. The ash defluorination stirring tank is connected to the inside of the defluorination filter tank through a discharge pipe. The defluorination filter tank is connected to the five-tank pool through the second conveying unit.

[0007] The upper part of the interior of the fluorine-reducing filter tank is provided with a filtering mechanism, the filtering mechanism comprises a mounting main shaft, an end head support and a filtering long slot, the mounting main shaft is rotationally arranged at the upper part of the interior of the fluorine-reducing filter tank, end head supports are arranged at the two ends of the mounting main shaft, and a filtering long slot is arranged between the two end head supports; the filtering long slot is provided with four groups, the four groups of filtering long slots are rotationally connected with the end head supports, and a rotary motor is mounted on the outer wall of one end of the fluorine-reducing filter tank.

[0008] Further improvements are that the stirring mechanism comprises a stirring shaft, stirring rods and a stirring motor, the stirring shaft is rotationally arranged in the interior of the ash-fluorine-reducing stirring tank, the stirring motor is mounted on the outer wall of one end of the ash-fluorine-reducing stirring tank, the stirring motor drives the stirring shaft, the stirring shaft is provided with stirring rods, and multiple groups of stirring rods are arranged in pairs.

[0009] Further improvements are that the first conveying unit comprises a first conveying pump and a first conveying pipeline, the first conveying pump is mounted on the water outlet tank, the input port of the first conveying pump is connected with the interior of the water outlet tank, and the output port of the first conveying pump is connected with the first conveying pipeline; and the first conveying pipeline extends to the interior of the ash-fluorine-reducing stirring tank.

[0010] Further improvements are that the second conveying unit comprises a second conveying pump and a second conveying pipeline, the second conveying pump is mounted on the side wall of the five-tank pool, the input port of the second conveying pump is connected with the bottom of the fluorine-reducing filter tank, and the output port of the second conveying pump is connected with the second conveying pipeline; and the second conveying pipeline is connected with the interior of the five-tank pool.

[0011] Further improvements are that the five-tank pool comprises an adjusting tank, a neutralizing tank, a flocculation tank, a sedimentation tank and a clarification tank, and the adjusting tank, the neutralizing tank, the flocculation tank, the sedimentation tank and the clarification tank are sequentially arranged.

[0012] Further improvements are that a first water outlet pipe and a second water outlet pipe are arranged on one side wall of the clarification tank, the first water outlet pipe is connected with the coal yard washing water system, and the second water outlet pipe is connected with the water treatment system.

[0013] The ash-fluorine-reducing stirring tank and the fluorine-reducing filter tank are arranged between the water outlet tank and the five-tank pool, the stirring mechanism in the interior of the ash-fluorine-reducing stirring tank can mix and stir the desulfurization wastewater and the ash in the interior of the ash-fluorine-reducing stirring tank, the fluorine in the desulfurization wastewater is removed by using the ash, the fluorine-reducing filter tank can filter and classify the desulfurization wastewater and the ash, the ash containing fluorine is filtered and retained, the desulfurization wastewater from which most of the fluorine is removed enters the five-tank pool for subsequent treatment, the difficulty of removing fluorine and the consumption of fluorine removal agent are greatly reduced, and the method has the advantages of economic energy saving.

[0014] The filtering mechanism is composed of multiple filtering long grooves, and filtering efficiency and quality are improved by using the multiple filtering long grooves for filtering respectively. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural perspective view of the utility model;

[0016] Fig. 2 It is a structural perspective view of the stirring mechanism of the utility model;

[0017] Fig. 3 It is a structural side view of the filtering mechanism of the utility model.

[0018] 1, water outlet tank; 2, ash slag fluorine reduction stirring tank; 3, fluorine reduction filter tank; 4, five connected pool; 5, rack; 6, discharge pipe; 7, installation main shaft; 8, end head support; 9, filtering long groove; 10, rotary motor; 11, stirring shaft; 12, stirring rod; 13, stirring motor; 14, first conveying pump; 15, first conveying pipeline; 16, second conveying pump; 17, second conveying pipeline; 18, first water outlet pipe; 19, second water outlet pipe; 20, ash slag feeding pipeline. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the utility model, the utility model will be further described in combination with examples below, and the present embodiment is only used for explaining the utility model, and does not constitute the limitation to the protection scope of the utility model.

[0020] According to Figs. 1-3The embodiment shown provides a desulfurization wastewater treatment system, which comprises a water outlet tank 1, an ash-fluorine reduction stirring tank 2, a fluorine reduction filter tank 3 and a five-pool 4. The water outlet tank 1 is provided with a rack 5 on one side. The rack 5 is internally provided with the ash-fluorine reduction stirring tank 2 on the upper side. The ash-fluorine reduction stirring tank 2 is internally provided with a stirring mechanism. The rack 5 is internally provided with the fluorine reduction filter tank 3 on the lower side. The first conveying unit of the water outlet tank 1 is connected to the upper side of the interior of the ash-fluorine reduction stirring tank 2. The ash-fluorine reduction stirring tank 2 is connected to the interior of the fluorine reduction filter tank 3 through a discharge pipe 6. The fluorine reduction filter tank 3 is connected to the five-pool 4 through the second conveying unit. The interior of the fluorine reduction filter tank 3 is provided with a filtering mechanism. The filtering mechanism comprises a mounting main shaft 7, an end head support 8 and a filtering long groove 9. The mounting main shaft 7 is rotatably arranged on the upper side of the interior of the fluorine reduction filter tank 3. The end head support 8 is arranged on the two ends of the mounting main shaft 7. The filtering long groove 9 is arranged between the two end head supports 8. The filtering long groove 9 is provided with four groups. The four groups of filtering long grooves 9 are rotatably connected with the end head supports 8. The fluorine reduction filter tank 3 is provided with a rotating motor 10 on the outer wall of one end. The mounting main shaft 7 is driven by the rotating motor 10. The rotating motor 10 drives the mounting main shaft 7 to rotate, so that the filtering long grooves 9 at different positions are controlled to rotate to the highest position in the interior of the fluorine reduction filter tank 3 to serve as the main filtering unit to perform the filtering operation. The four groups of filtering long grooves 9 can be filtered respectively, so that the problem of filtering failure or filtering capacity reduction of a single filtering long groove 9 can be avoided, and the system can maintain stable filtering capacity.

[0021] When the desulfurization wastewater treatment system of the utility model processes the desulfurization wastewater, the desulfurization wastewater is stored in the water outlet tank 1. The desulfurization wastewater in the water outlet tank 1 is conveyed to the interior of the ash-fluorine reduction stirring tank 2 through the first conveying unit. The stirring mechanism mixes the ash and the desulfurization wastewater in the interior of the ash-fluorine reduction stirring tank 2, so that the ash can fully absorb the fluoride. Then, the mixture in the ash-fluorine reduction stirring tank 2 is discharged to the interior of the fluorine reduction filter tank 3 through the discharge pipe 6. One group of filtering long grooves 9 at the highest position in the interior of the fluorine reduction filter tank 3 is used for primary filtering. One group of filtering long grooves 9 at the lowest position in the interior of the fluorine reduction filter tank 3 is used for secondary filtering. The filtered desulfurization wastewater is conveyed to the interior of the five-pool 4 through the second conveying unit for subsequent processing.

[0022] The stirring mechanism comprises a stirring shaft 11, a stirring rod 12 and a stirring motor 13. The stirring shaft 11 is rotatably arranged in the interior of the ash-fluorine reduction stirring tank 2. The stirring motor 13 is arranged on the outer wall of one end of the ash-fluorine reduction stirring tank 2. The stirring motor 13 drives the stirring shaft 11. The stirring rod 12 is arranged on the stirring shaft 11. Two groups of stirring rods 12 are arranged in each group. The stirring motor 13 can drive the stirring shaft 11 to rotate, so that the stirring rod 12 on the stirring shaft 11 can mix the ash and the desulfurization wastewater.

[0023] The first conveying unit comprises a first conveying pump 14 and a first conveying pipeline 15, the first conveying pump 14 is arranged on the water outlet tank 1, the input port of the first conveying pump 14 is connected with the inside of the water outlet tank 1, the output port of the first conveying pump 14 is connected with the first conveying pipeline 15, and the first conveying pipeline 15 extends to the inside of the ash slag fluorine reduction stirring tank 2.

[0024] The second conveying unit comprises a second conveying pump 16 and a second conveying pipeline 17, the second conveying pump 16 is arranged on the side wall of the five-pool 4, the input port of the second conveying pump 16 is connected with the bottom of the fluorine reduction filter tank 3, the output port of the second conveying pump 16 is connected with the second conveying pipeline 17, and the second conveying pipeline 17 is connected with the inside of the five-pool 4.

[0025] The five-pool 4 comprises a regulating pool, a neutralizing pool, a flocculation pool, a sedimentation pool and a clarification pool, and the regulating pool, the neutralizing pool, the flocculation pool, the sedimentation pool and the clarification pool are sequentially arranged.

[0026] The side wall of the clarification pool is provided with a first water outlet pipe 18 and a second water outlet pipe 19, the first water outlet pipe 18 is connected with a coal yard washing water system, and the second water outlet pipe 19 is connected with a water treatment system.

[0027] The utility model discloses a fluorine reduction stirring tank 2 and fluorine reduction filter tank 3 are additionally arranged between the water outlet tank 1 and the five-pool 4, the stirring mechanism in the fluorine reduction stirring tank 2 can mix and stir the desulfurization wastewater with the ash slag in the fluorine reduction stirring tank 2, and the fluorine compound in the desulfurization wastewater is removed by using the ash slag, the fluorine reduction filter tank 3 can filter and classify the desulfurization wastewater and the ash slag, the ash slag containing the fluorine compound is filtered and retained, the desulfurization wastewater with most of the fluorine compound removed enters the five-pool for subsequent treatment, the fluorine compound removal difficulty is greatly reduced, and the consumption of the fluorine removal agent is reduced, and the utility model discloses the economic energy -saving advantage, the filter mechanism of the utility model discloses is formed by multiple filter long grooves 9, can realize using multiple filter long grooves 9 respectively to filter, and the filter efficiency and quality are improved in this way.

[0028] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A desulfurization wastewater treatment system characterized by: The utility model provides a kind of fluorine reduction and filtration device for ash, including water outlet tank (1), ash fluorine reduction stirring tank (2), fluorine reduction filter tank (3) and five ponds (4), the water outlet tank (1) one side is equipped with rack (5), the rack (5) inside upper portion is equipped with ash fluorine reduction stirring tank (2), the ash fluorine reduction stirring tank (2) one end side wall is equipped with ash feeding pipeline (20), the ash fluorine reduction stirring tank (2) is equipped with stirring mechanism inside, the rack (5) inside lower portion is equipped with fluorine reduction filter tank (3), the first conveying unit of water outlet tank (1) is connected ash fluorine reduction stirring tank (2) inside upper portion, the ash fluorine reduction stirring tank (2) is communicated fluorine reduction filter tank (3) inside by discharge pipe (6), the fluorine reduction filter tank (3) is connected five ponds (4) by second conveying unit; The filter mechanism is arranged on the upper portion of the fluorine reduction filter tank (3) and includes a mounting main shaft (7), an end head support (8) and a filter long groove (9). The mounting main shaft (7) is rotatably arranged on the upper portion of the fluorine reduction filter tank (3). The end head support (8) is arranged at the two ends of the mounting main shaft (7). The filter long groove (9) is arranged between the two end head supports (8). The filter long groove (9) is arranged in four groups. Each of the four groups of filter long grooves (9) is rotatably connected with the end head support (8). The fluorine reduction filter tank (3) is provided with a rotary motor (10) mounted on the outer wall of one end of the fluorine reduction filter tank (3). The mounting main shaft (7) is driven by the rotary motor (10).

2. The desulfurization wastewater treatment system according to claim 1, characterized by: The stirring mechanism includes a stirring shaft (11), a stirring rod (12) and a stirring motor (13). The stirring shaft (11) is rotatably arranged in the ash fluorine reduction stirring tank (2). The stirring motor (13) is mounted on the outer wall of one end of the ash fluorine reduction stirring tank (2). The stirring motor (13) drives the stirring shaft (11). The stirring rod (12) is arranged on the stirring shaft (11). The stirring rod (12) is arranged in multiple groups.

3. The desulfurization wastewater treatment system according to claim 1, characterized by: The first conveying unit includes a first conveying pump (14) and a first conveying pipeline (15). The first conveying pump (14) is mounted on the water outlet tank (1). The input port of the first conveying pump (14) is connected with the inside of the water outlet tank (1). The output port of the first conveying pump (14) is connected with the first conveying pipeline (15). The first conveying pipeline (15) extends into the ash fluorine reduction stirring tank (2).

4. The desulfurization wastewater treatment system according to claim 1, characterized by: The second conveying unit includes a second conveying pump (16) and a second conveying pipeline (17). The second conveying pump (16) is mounted on the side wall of the five ponds (4). The input port of the second conveying pump (16) is connected with the bottom of the fluorine reduction filter tank (3). The output port of the second conveying pump (16) is connected with the second conveying pipeline (17). The second conveying pipeline (17) is connected with the inside of the five ponds (4).

5. The desulfurization wastewater treatment system according to claim 1, characterized by: The five ponds (4) include an adjusting pond, a neutralization pond, a flocculation pond, a sedimentation pond and a clarification pond. The adjusting pond, the neutralization pond, the flocculation pond, the sedimentation pond and the clarification pond are sequentially arranged.

6. The desulfurization wastewater treatment system according to claim 5, characterized by: The first water outlet pipe (18) is connected with the coal yard washing water system, and the second water outlet pipe (19) is connected with the water treatment system.

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