Environment-friendly and energy-saving desulfurization wastewater treatment device

Abstract

The utility model relates to the technical field of power plant wastewater treatment, and particularly discloses an environment-friendly and energy-saving desulfurization wastewater treatment device which comprises a wastewater treatment tower, a stirring box is arranged at the upper half part in the wastewater treatment tower, and a filtering box is arranged at the lower half part in the wastewater treatment tower; the wastewater inlet is formed in the top wall of the wastewater treatment tower; the stirring mechanism is fixedly connected to the top wall of the wastewater treatment tower, and the stirring mechanism is arranged in the stirring box; the aeration disc is arranged in the middle of the bottom wall of the stirring box; the water drainage pipes are arranged on the two sides of the bottom wall of the stirring box, and the stirring box is communicated with the filtering box through the water drainage pipes; the filtering mechanism is arranged in the filtering box; and the waste gas absorption tower is communicated with the wastewater treatment tower. Wastewater is fully stirred and filtered through the wastewater treatment tower, the wastewater treatment efficiency is improved, ammonia gas generated by wastewater treatment is recycled through the waste gas absorption tower, and pollution caused by the fact that a large amount of ammonia gas is discharged into air is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of power plant wastewater treatment, and more specifically, to an environmentally friendly and energy-saving desulfurization wastewater treatment device. Background Art

[0002] Sulfur dioxide is a harmful substance that is often discharged as waste gas from power plants. If these waste gases are discharged into the atmosphere, they will cause serious environmental pollution and pose a great threat to human health. Therefore, in many countries and regions, desulfurization of these waste gases is mandatory. In order to reduce the harm of sulfur dioxide gas produced by coal-fired power generation to the natural environment, industry and agriculture, thermal power plants have built coal-fired flue gas desulfurization systems. The mainstream method of flue gas desulfurization is wet desulfurization technology, which has the advantages of mature technology, high desulfurization efficiency, good adaptability to coal types, and reliable operation.

[0003] However, the stirring device in the existing desulfurization wastewater treatment device does not stir evenly enough, which will result in the neutralizer not being fully mixed with the wastewater. In addition, the ammonia nitrogen content in the desulfurization wastewater is high due to ammonia escape, and it cannot be completely treated subsequently, causing ammonia to be discharged into the air. Utility Model Content

[0004] In order to solve the above technical defects, the utility model provides an environmentally friendly and energy-saving desulfurization wastewater treatment device, which solves the problems of uneven stirring and failure to clean up waste gas in time in the prior art desulfurization wastewater treatment device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an environmentally friendly and energy-saving desulfurization wastewater treatment device, comprising:

[0006] A wastewater treatment tower, wherein the upper half of the interior of the wastewater treatment tower is a stirring box, and the lower half of the interior of the wastewater treatment tower is a filter box;

[0007] A wastewater inlet is provided on the top wall of the wastewater treatment tower;

[0008] A stirring mechanism, fixedly connected to the top wall of the wastewater treatment tower, and the stirring mechanism is arranged inside the stirring box;

[0009] An aeration plate is arranged in the middle of the bottom wall of the mixing box;

[0010] Drain pipes are provided on both sides of the bottom wall of the mixing box, and the mixing box is connected to the filter box through the drain pipes;

[0011] A filtering mechanism is arranged inside the filtering box;

[0012] The waste gas absorption tower is connected to the waste water treatment tower.

[0013] Furthermore, the stirring mechanism comprises:

[0014] A first motor, fixedly connected to the top wall of the wastewater treatment tower;

[0015] A stirring shaft, fixedly connected to the output end of the first motor;

[0016] Stirring blades, the number of which is several and fixedly connected to both sides of the stirring shaft;

[0017] A stirring enhancement mechanism, fixedly connected to the stirring shaft;

[0018] The first cleaning mechanism is fixedly connected to the stirring enhancement mechanism.

[0019] Furthermore, the stirring enhancement mechanism comprises:

[0020] A connecting block, fixedly connected to the stirring shaft;

[0021] A second motor, fixedly connected to the connecting block;

[0022] A connecting shaft, fixedly connected to the output ends on both sides of the second motor;

[0023] The paddle-shaped blade is fixedly connected to the connecting shaft.

[0024] Furthermore, the first cleaning mechanism comprises:

[0025] A first screw rod, fixedly connected to the connecting shaft;

[0026] A first rotating block, wherein the inner side wall of the first rotating block is threadedly connected to the first screw rod;

[0027] A sliding block, slidably connected to the outer side wall of the first rotating block;

[0028] A connecting rod, one end of which is hinged to the sliding block;

[0029] A cleaning block is hinged to the other end of the connecting rod, and one side of the cleaning block is in contact with the inner wall of the wastewater treatment tower.

[0030] Furthermore, the filtering mechanism comprises:

[0031] A filter screen is fixedly connected to the inner wall of the filter box, and the filter screen is arranged below the drain pipe;

[0032] The second cleaning and brushing mechanism is arranged through the filter box, and the second light brushing mechanism is arranged between the filter screen and the drain pipe.

[0033] Furthermore, the second cleaning mechanism comprises:

[0034] A third motor is arranged through the outer wall of the filter box;

[0035] A second screw rod, fixedly connected to an output end of the third motor;

[0036] A second rotating block, wherein the inner side wall of the second rotating block is threadedly connected to the second screw rod;

[0037] The brush block is fixedly connected to the second rotating block, and the brush side of the brush block is in contact with the filter screen.

[0038] Furthermore, the exhaust gas absorption tower comprises:

[0039] case;

[0040] An air inlet pipe, one end of which is connected to the top wall of the wastewater treatment tower, and the other end of which is connected to the bottom side wall of the shell;

[0041] An air pump, arranged on the steam inlet pipe;

[0042] A spray assembly is arranged inside the shell;

[0043] A water outlet is provided on the bottom wall of the shell;

[0044] A filter layer is arranged above the spray assembly;

[0045] An air outlet is opened at the top of the shell.

[0046] Furthermore, the exhaust gas absorption tower also includes:

[0047] The spoilers are multiple in number and are arranged in an interlaced manner below the spray assembly.

[0048] Compared with the prior art, the beneficial effects of the utility model are:

[0049] The utility model treats desulfurization wastewater through a stirring enhancement mechanism in cooperation with a stirring mechanism, and cleans the sediment on the inner wall of the stirring box through a first cleaning mechanism to make the stirring more uniform, and cleans the impurities on the filter screen in time through a second cleaning mechanism to reduce the clogging of the filter screen and improve the filtering efficiency of the filter screen, thereby improving the wastewater treatment efficiency, and recovering ammonia in the wastewater through a waste gas absorption tower to reduce the pollution of ammonia to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 The schematic diagram of the structure of an environmentally friendly and energy-saving desulfurization wastewater treatment device proposed in an embodiment of the utility model is shown.

[0052] In the figure: 11, wastewater treatment tower; 12, waste gas absorption tower; 2, wastewater inlet; 31, first motor; 32, stirring shaft; 33, stirring blade; 341, connecting block; 342, second motor; 343, connecting shaft; 344, paddle blade; 351, first screw rod; 352, first rotating block; 353, slider; 354, connecting rod; 355, brush block; 4, aeration plate; 5, drain pipe; 61, filter screen; 621, third motor; 622, second screw rod; 623, second rotating block; 624, brush block; 71, shell; 72, air inlet pipe; 73, air pump; 74, spray assembly; 75, water outlet; 76, filter layer; 77, air outlet; 78, spoiler. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] The present application embodiment provides an environmentally friendly and energy-saving desulfurization wastewater treatment device, such as Figure 1 As shown, it includes a wastewater treatment tower 11, the upper half of the interior of the wastewater treatment tower 11 is a stirring box, and the lower half of the interior of the wastewater treatment tower 11 is a filter box; a wastewater inlet 2 is opened on the top wall of the wastewater treatment tower 11; a stirring mechanism is fixedly connected to the top wall of the wastewater treatment tower 11, and the stirring mechanism is arranged inside the stirring box; an aeration plate 4 is arranged in the middle of the bottom wall of the stirring box; a drain pipe 5 is opened on both sides of the bottom wall of the stirring box, and the stirring box is connected to the filter box through the drain pipe 5; a filter mechanism is arranged inside the filter box; a waste gas absorption tower 12 is connected to the wastewater treatment tower 11.

[0058] In this embodiment, the mixing box and the filter box are connected through the drain pipe 5. When the mixing box is reacting, the valve of the drain pipe 5 is closed. After the reaction is completed, the drain pipe 5 is opened to introduce the desulfurization wastewater after the reaction into the filter box for filtration and precipitation. The ammonia in the desulfurization wastewater is decomposed by the aeration plate 4, and the ammonia is introduced into the waste gas absorption tower 12 to be converted into ammonia water for reuse.

[0059] In some embodiments of the present application, the stirring mechanism includes: a first motor 31, fixedly connected to the top wall of the wastewater treatment tower 11; a stirring shaft 32, fixedly connected to the output end of the first motor 31; stirring blades 33, the number of which is several and fixedly connected to both sides of the stirring shaft 32; a stirring enhancement mechanism, fixedly connected to the stirring shaft 32; and a first cleaning mechanism, fixedly connected to the stirring enhancement mechanism.

[0060] In this embodiment, the stirring shaft 32 is driven to rotate by the first motor 31, thereby driving the stirring blades 33 on both sides of the stirring shaft 32 to rotate to stir the reaction liquid. The stirring enhancement mechanism is arranged at the bottom end of the stirring shaft 32. The reaction rate is accelerated by the stirring enhancement mechanism and the first cleaning mechanism to improve the reaction efficiency.

[0061] In some embodiments of the present application, the stirring enhancement mechanism includes: a connecting block 341, fixedly connected to the stirring shaft 32; a second motor 342, fixedly connected to the connecting block 341; a connecting shaft 343, fixedly connected to the output ends on both sides of the second motor 342; and a paddle blade 344, fixedly connected to the connecting shaft 343.

[0062] In this embodiment, the second motor 342 drives the connecting shaft 343 to rotate, thereby driving the paddle blade 344 to rotate. By setting the paddle blade 344, the reaction liquid is gathered toward the stirring blade 33, thereby increasing the flow of the reaction liquid and the number of mixing impacts, thereby accelerating the reaction rate.

[0063] In some embodiments of the present application, the first cleaning mechanism includes: a first screw rod 351, fixedly connected to the connecting shaft 343; a first rotating block 352, the inner wall of the first rotating block 352 is threadedly connected to the first screw rod 351; a slider 353, slidably connected to the outer wall of the first rotating block 352; a connecting rod 354, one end of which is hinged to the slider 353; a cleaning block 355, hinged to the other end of the connecting rod 354, and one side of the cleaning block 355 is in contact with the inner wall of the wastewater treatment tower 11.

[0064] In this embodiment, the rotation of the connecting shaft 343 can simultaneously drive the first screw 351 to rotate, thereby causing the first rotating block 352 to move laterally. A ball groove is provided at the connection between the slider 353 and the first rotating block 352, and a ball is installed in the ball groove. The ball causes the slider 353 to not rotate with the first rotating block 352, but only move laterally. The slider 353 drives the connecting rod 354 to move, and the connecting rod 354 drives the cleaning brush to move up and down, thereby cleaning the inner wall of the mixing box to prevent the reactants from sticking to the inner wall and affecting the reaction efficiency.

[0065] In some embodiments of the present application, the filtering mechanism includes: a filter screen 61, fixedly connected to the inner wall of the filter box, and the filter screen 61 is arranged below the drain pipe 5; a second cleaning mechanism, passing through the filter box, and the second light brushing mechanism is arranged between the filter screen 61 and the drain pipe 5.

[0066] In this embodiment, the filter screen 61 is fixedly connected to the inner wall of the filter box on all sides, and the length of the second cleaning mechanism is slightly smaller than the length of the filter screen 61. The cleaning mechanism can completely clean the filter screen 61. The blockage on the filter screen 61 can be cleaned in time by the second cleaning mechanism to prevent the filter screen 61 from being blocked and affecting the filtering effect of the reaction liquid.

[0067] In some embodiments of the present application, the second cleaning mechanism includes: a third motor 621, which is penetrated through the outer wall of the filter box; a second screw rod 622, which is fixedly connected to the output end of the third motor 621; a second rotating block 623, the inner wall of the second rotating block 623 is threadedly connected to the second screw rod 622; a brush block 624, which is fixedly connected to the second rotating block 623, and the brush side of the brush block 624 is in contact with the filter 61.

[0068] In this embodiment, the third motor 621 drives the second screw rod 622 to rotate, thereby driving the second rotating block 623 to move horizontally, so that the brush block 624 cleans the filter screen 61 and removes the blockage attached to the filter screen 61 in time.

[0069] In some embodiments of the present application, the exhaust gas absorption tower 12 includes: a shell 71; an air inlet pipe 72, one end of which is connected to the top wall of the wastewater treatment tower 11, and the other end is connected to the bottom side wall of the shell 71; an air pump 73, which is arranged on the steam inlet pipe; a spray assembly 74, which is arranged inside the shell 71; a water outlet 75, which is opened on the bottom wall of the shell 71; a filter layer 76, which is arranged above the spray assembly 74; and an air outlet 77, which is opened on the top of the shell 71.

[0070] In this embodiment, when the stirring mechanism is started, the aeration plate 4 is opened to decompose the ammonia in the desulfurization wastewater, and the air pump 73 is turned on to allow the ammonia in the stirring box to flow into the lower part of the shell 71 of the exhaust gas absorption tower 12 through the air inlet pipe 72. At the same time, the spray assembly 74 is turned on to spray the exhaust gas absorption tower 12, and the ammonia at the bottom is converted into ammonia water and flows into the bottom of the shell 71. The remaining ammonia passes through the filter layer 76 and is discharged through the outlet 77.

[0071] In some embodiments of the present application, the exhaust gas absorption tower 12 further includes: a spoiler 78 , and the spoiler 78 is in a plurality and arranged in an interlaced manner below the spray assembly 74 .

[0072] In this embodiment, the staggered spoilers 78 are used to block the ammonia gas at the bottom, thereby increasing the contact time between the ammonia gas and the spray assembly 74 and increasing the reaction time of the ammonia water.

[0073] When the utility model is in use, the desulfurized wastewater and the neutralizing liquid are sequentially discharged into the mixing box of the wastewater treatment tower 11 through the wastewater inlet 2, the first motor 31 is driven to drive the stirring blade 33 to stir the reaction liquid, and the second motor 342 is driven to drive the paddle-shaped blade 344 to rotate, so as to accelerate the reaction time of the reaction liquid. At the same time, the second motor 342 will also drive the cleaning block 355 to move up and down to clean the inner wall of the mixing box to prevent the reactants from adhering to the inner wall of the mixing box and affecting the reaction efficiency. After the reaction is completed, the valve of the drain pipe 5 is opened to The reaction liquid is passed into the filter box for filtration and precipitation, and the waste residue and waste water in the filter box are subsequently recovered. When the stirring mechanism is turned on, the aeration plate 4 decomposes the ammonia in the desulfurization wastewater, and the ammonia is transmitted to the bottom of the waste gas absorption tower 12 through the air pump 73. At the same time, the spray assembly 74 is turned on to spray the ammonia in the waste gas absorption tower 12, so that the ammonia reacts into ammonia water and sinks to the bottom of the absorption tower. The remaining ammonia passing through the spoiler 78 is discharged through the filter layer 76 and the air outlet 77. The water outlet 75 at the bottom can be opened to recover the ammonia water.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An environmentally friendly and energy-saving desulfurization wastewater treatment device, characterized in that: include: A wastewater treatment tower, wherein the upper half of the interior of the wastewater treatment tower is a stirring box, and the lower half of the interior of the wastewater treatment tower is a filter box; A wastewater inlet is provided on the top wall of the wastewater treatment tower; A stirring mechanism, fixedly connected to the top wall of the wastewater treatment tower, and the stirring mechanism is arranged inside the stirring box; An aeration plate is arranged in the middle of the bottom wall of the mixing box; Drain pipes are provided on both sides of the bottom wall of the mixing box, and the mixing box is connected to the filter box through the drain pipes; A filtering mechanism is arranged inside the filtering box; The waste gas absorption tower is connected to the waste water treatment tower.

2. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 1 is characterized in that: The stirring mechanism comprises: A first motor, fixedly connected to the top wall of the wastewater treatment tower; A stirring shaft, fixedly connected to the output end of the first motor; Stirring blades, the number of which is several and fixedly connected to both sides of the stirring shaft; A stirring enhancement mechanism, fixedly connected to the stirring shaft; The first cleaning mechanism is fixedly connected to the stirring enhancement mechanism.

3. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 2 is characterized in that: The stirring enhancement mechanism comprises: A connecting block, fixedly connected to the stirring shaft; A second motor, fixedly connected to the connecting block; A connecting shaft, fixedly connected to the output ends on both sides of the second motor; The paddle-shaped blade is fixedly connected to the connecting shaft.

4. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 3 is characterized in that: The first cleaning mechanism comprises: A first screw rod, fixedly connected to the connecting shaft; A first rotating block, wherein the inner side wall of the first rotating block is threadedly connected to the first screw rod; A sliding block, slidably connected to the outer side wall of the first rotating block; A connecting rod, one end of which is hinged to the sliding block; A cleaning block is hinged to the other end of the connecting rod, and one side of the cleaning block is in contact with the inner wall of the wastewater treatment tower.

5. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 1, characterized in that: The filtering mechanism comprises: A filter screen is fixedly connected to the inner wall of the filter box, and the filter screen is arranged below the drain pipe; The second cleaning mechanism is installed in the filter box and is arranged between the filter screen and the drain pipe.

6. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 5, characterized in that: The second cleaning mechanism comprises: A third motor is arranged through the outer wall of the filter box; A second screw rod, fixedly connected to an output end of the third motor; A second rotating block, wherein the inner side wall of the second rotating block is threadedly connected to the second screw rod; The brush block is fixedly connected to the second rotating block, and the brush side of the brush block is in contact with the filter screen.

7. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 1, characterized in that: The exhaust gas absorption tower comprises: case; An air inlet pipe, one end of which is connected to the top wall of the wastewater treatment tower, and the other end of which is connected to the bottom side wall of the shell; An air pump, arranged on the air inlet pipe; A spray assembly is arranged inside the shell; A water outlet is provided on the bottom wall of the shell; A filter layer is arranged above the spray assembly; An air outlet is opened at the top of the shell.

8. The environmentally friendly and energy-saving desulfurization wastewater treatment device according to claim 7, characterized in that: The exhaust gas absorption tower also includes: The spoilers are multiple in number and are arranged in an interlaced manner below the spray assembly.

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