Desulfurization wastewater treatment and recycling device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a desulfurization wastewater treatment and recycling device, which comprises an inclined plate sedimentation tank, wastewater enters the inclined plate sedimentation tank from a sedimentation tank water inlet tank, a sludge hopper is arranged at the inner bottom of the inclined plate sedimentation tank, a lime dissolving tank is arranged on one side of the sedimentation tank water inlet tank, and a sludge outlet is formed in the other side of the inclined plate sedimentation tank. A water inlet is formed in the top of the lime dissolving tank; an external water source enters the lime dissolving tank through the water inlet, and quick lime in the lime dissolving tank is flushed into the sedimentation tank water inlet tank to be mixed with wastewater; and the right side wall of the inclined plate sedimentation tank is communicated with the water inlet through a pipeline. The wastewater treatment device is high in treatment efficiency and can effectively remove sulfides and other pollutants in wastewater; due to the integrated design, the occupied area of the equipment is reduced, and the equipment is suitable for brickyards with limited space; the whole equipment is simple in structure and low in installation and maintenance cost, meanwhile, wastewater recycling is achieved, water resources are saved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field, concretely is a kind of desulfurization wastewater treatment and reuse device. BACKGROUND

[0002] There are many environmental problems in brick and tile enterprises in China. In the past few years, due to the small amount of pollutant emissions of individual brick and tile enterprises, the enterprises and environmental protection departments did not pay enough attention. Brick and tile enterprises are basically not included in the supervision range of key sources. Due to small environmental monitoring and supervision, the authenticity of environmental monitoring data is poor. The flue gas desulfurization and dust removal treatment started late, lacked treatment experience, and the pollution control technology developed slowly. In the past few years, brick and tile enterprises invested little in environmental protection, and the production process equipment and pollution control facilities were significantly lagging behind compared to other industries such as cement and ceramics. In recent years, the treatment technology developed mainly uses double-alkali desulfurization and dust removal integrated technology, which is a very mature process, but cannot effectively remove sulfides in wastewater. The entire desulfurization device occupies a large space, the equipment structure is complex, and wastewater reuse cannot be achieved. UTILITY MODEL CONTENT

[0003] The utility model aims to provide a kind of desulfurization wastewater treatment and reuse device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a desulfurization wastewater treatment and reuse device, comprising an inclined plate sedimentation tank, wastewater enters the inclined plate sedimentation tank from a sedimentation tank inlet, and the inner bottom of the inclined plate sedimentation tank is provided with a sludge hopper. A lime dissolving tank is provided on one side of the sedimentation tank inlet, and a water inlet is provided at the top of the lime dissolving tank.

[0005] An external water source enters the lime dissolving tank through the water inlet and collides with the quicklime inside to form a lime slurry. The lime slurry enters the sedimentation tank inlet and mixes with the wastewater to react.

[0006] The right side wall of the inclined plate sedimentation tank is connected to the water inlet through a pipeline.

[0007] Preferably, a plurality of injection ports are formed in the side wall of the sedimentation tank inlet adjacent to the lime dissolving tank, and the injection ports are in communication with the sedimentation tank inlet.

[0008] Preferably, the plurality of injection ports are divided into at least two layers along the vertical direction.

[0009] Preferably, a baffle is fixed to each of the two opposite sides of the inner wall of the sedimentation tank inlet, and the baffles are used to form a Z-shaped channel in the sedimentation tank inlet.

[0010] Preferably, the bottom of the sedimentation tank inlet chute is communicated with the inclined plate sedimentation tank through a bottom hole.

[0011] Preferably, an overflow weir is fixedly arranged on the inner wall surface of the inclined plate sedimentation tank, and the overflow weir is communicated with the water inlet through a pipeline.

[0012] Preferably, the bottom of the sludge hopper is fixedly communicated with a sludge discharge pipe.

[0013] Preferably, an inclined plate is arranged in the inclined plate sedimentation tank, and the height of the overflow weir is higher than the height of the inclined plate.

[0014] Preferably, the inclined plate is an upflowing type and the inclined angle of the inclined plate is 60 degrees.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application has high treatment efficiency, can effectively remove sulfides and other pollutants in wastewater, has reduced equipment floor area due to the integrated design, is suitable for brick factories with limited space, has simple structure, low installation and maintenance costs, realizes reuse of wastewater, saves water resources, and reduces production costs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional view of the present application;

[0018] Figure 2 is a top view of the present application;

[0019] Figure 3 is a sectional view of the present application Figure 1 A is an enlarged structural schematic view of the present application.

[0020] In the figure: 1, inclined plate sedimentation tank; 2, lime dissolving tank; 3, sedimentation tank inlet chute; 4, sludge hopper; 5, sludge discharge pipe; 6, inclined plate; 7, overflow weir; 8, pipeline; 9, injection port; 10, flow baffle; 11, bottom hole; 12, water inlet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-3 The present application provides a technical solution:

[0023] The application discloses a desulfurization wastewater treatment and recycling device, which comprises an inclined plate sedimentation tank 1, a sedimentation tank water inlet channel 3 is arranged at the top of the inclined plate sedimentation tank 1, wastewater enters the inclined plate sedimentation tank 1 from the sedimentation tank water inlet channel 3, a sludge hopper 4 is arranged at the inner bottom of the inclined plate sedimentation tank 1, the inclination angle of the sludge hopper 4 in the embodiment is 45°, a lime dissolving tank 2 is arranged at one side of the sedimentation tank water inlet channel 3, raw lime is arranged in the lime dissolving tank 2, and a water inlet 12 is arranged at the top of the lime dissolving tank 2; an external water source enters the lime dissolving tank 2 through the water inlet 12 and washes the raw lime in the lime dissolving tank 2 into the sedimentation tank water inlet channel 3 to be mixed with the wastewater; specifically, the external water source can dissolve the raw lime in the lime dissolving tank 2 to form lime slurry, the lime slurry enters the sedimentation tank water inlet channel 3 to collide and mix with the sulfur-containing wastewater to generate precipitates, and the precipitates are deposited in the inclined plate sedimentation tank 1 and the sludge hopper 4, so that the suspended matters and impurities in the wastewater and the precipitates are deposited in the sludge hopper 4 to form sludge, and the bottom of the sludge hopper 4 is fixedly connected with a sludge discharge pipe 5, and the sludge generated in the sludge hopper 4 can be discharged through the sludge discharge pipe 5.

[0024] Further, in order to realize efficient and uniform mixing of the wastewater and the lime slurry, a plurality of spray openings 9 are formed in the side wall of the lime dissolving tank 2 close to the sedimentation tank water inlet channel 3, the spray openings 9 are communicated with the sedimentation tank water inlet channel 3, and the plurality of spray openings 9 are divided into at least two layers in the vertical direction; as shown in the figure, the plurality of spray openings 9 are divided into three layers, the lime slurry in the lime dissolving tank 2 can collide and mix with the sulfur-containing wastewater for multiple times, the mixing efficiency is high, the uniformity is good, the lime slurry and the sulfur-containing wastewater can be fully reacted, and the desulfurization effect is excellent.

[0025] Further, as shown in the figure, the opposite two side surfaces of the inner wall of the sedimentation tank water inlet channel 3 are fixedly provided with flow baffles 10, the flow baffles 10 are used for forming a Z-shaped channel in the sedimentation tank water inlet channel 3, the lime slurry and the sulfur-containing wastewater need to flow through the Z-shaped channel after being mixed, so that the mixing of the lime slurry and the sulfur-containing wastewater is more sufficient and complete, and the desulfurization effect is better; the arrangement of the flow baffles 10 can make the water flow more uniform, avoid the water flow directly impacting the inclined plate 6 and ensure the sedimentation effect.

[0026] The bottom of the sedimentation tank water inlet channel 3 is communicated with the inclined plate sedimentation tank 1 through a bottom hole 11, the lime slurry and the sulfur-containing wastewater are mixed and then enter the inside of the inclined plate sedimentation tank 1 through the bottom hole 11, and the suspended matters, impurities and precipitates generated after the mixing of the lime slurry and the sulfur-containing wastewater are deposited in the inside of the sludge hopper 4.

[0027] The right side wall of the inclined plate sedimentation tank 1 is connected with the water inlet 12 through the pipeline 8; specifically, the inner wall surface of the inclined plate sedimentation tank 1 is fixedly provided with the overflow weir 7, the overflow weir 7 is connected with the water inlet 12 through the pipeline 8, the overflow weir 7 can be used for collecting the water on the top of the inclined plate sedimentation tank 1 after sedimentation, the water can enter the inside of the lime dissolving tank 2 through the pipeline 8 and the water inlet 12 to dissolve the quicklime, so that the recycling of the wastewater is realized, the use of fresh water resources is reduced, and the production cost of the brick factory is reduced.

[0028] The inclined plate 6 is arranged in the inclined plate sedimentation tank 1, the height of the overflow weir 7 is higher than the height of the inclined plate 6, further, the inclined plate 6 is an upflowing type opposite inclined plate, and the inclination angle of the inclined plate 6 is 60°; the arrangement of the inclined plate 6 greatly increases the sedimentation area, improves the sedimentation efficiency, and shortens the sedimentation time.

[0029] In the embodiment, the flow of the sulfur-containing wastewater is 45m 3 / h, the flow of the lime slurry is 5m 3 / h; the design flow of the inclined plate sedimentation tank 1 is 100m 3 / h.

[0030] The lime dissolving tank 2 adopts intermittent water outlet and is composed of a cuboid and an irregular prism, wherein the irregular prism part is a bucket with an angle of 45° on three sides, and the dissolving mode is simple and efficient, and can meet the wastewater treatment demand.

[0031] In the embodiment, the lime dissolving tank 2 and the sedimentation tank water inlet groove 3 are made of acid and alkali corrosion resistant materials.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A desulfurization wastewater treatment and reuse device, comprising an inclined plate sedimentation tank (1), wastewater enters the inclined plate sedimentation tank (1) from a sedimentation tank inlet (3), and a sludge hopper (4) is arranged at the inner bottom of the inclined plate sedimentation tank (1), characterized in that, The lime dissolving tank (2) is arranged on one side of the sedimentation tank water inlet groove (3), and the top of the lime dissolving tank (2) is provided with a water inlet (12); An external water source enters the lime dissolving tank (2) through the water inlet (12) and collides and mixes with the quicklime inside to form lime slurry, which enters the sedimentation tank water inlet groove (3) to mix and react with wastewater; The right side wall of the inclined plate sedimentation tank (1) is connected with the water inlet (12) through a pipeline (8).

2. A desulfurization wastewater treatment and reuse device according to claim 1, characterized in that, The lime dissolving tank (2) is arranged on one side of the sedimentation tank water inlet groove (3), and the top of the lime dissolving tank (2) is provided with a water inlet (12); 3. A desulfurization wastewater treatment and reuse device according to claim 2, characterized in that, The plurality of spray openings (9) are divided into at least two layers along the vertical direction.

4. The desulfurization wastewater treatment and reuse device according to claim 2 or 3, characterized in that, The opposite two sides of the inner wall of the sedimentation tank water inlet groove (3) are both fixedly provided with a flow baffle (10), and the flow baffle (10) is used for forming a Z-shaped channel in the sedimentation tank water inlet groove (3).

5. The desulfurization wastewater treatment and reuse device according to claim 1, characterized in that, The bottom of the sedimentation tank water inlet groove (3) is connected with the inclined plate sedimentation tank (1) through a bottom hole (11).

6. The desulfurization wastewater treatment and reuse device according to claim 1, characterized in that, The inner wall of the inclined plate sedimentation tank (1) is fixedly provided with an overflow weir (7), and the overflow weir (7) is connected with the water inlet (12) through a pipeline (8).

7. The desulfurization wastewater treatment and reuse device according to claim 1, characterized in that, The bottom of the sludge hopper (4) is fixedly connected with a sludge discharge pipe (5).

8. A desulfurization wastewater treatment and reuse device according to claim 6, characterized in that, The inclined plate sedimentation tank (1) is internally provided with an inclined plate (6), and the height of the overflow weir (7) is higher than that of the inclined plate (6).

9. The desulfurization wastewater treatment and reuse device according to claim 6, characterized in that, The inclined plate (6) is an upflowing type and the inclined angle of the inclined plate (6) is 60°.

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