Wastewater treatment device

Abstract

The utility model provides a wastewater treatment device and relates to the technical field of wastewater treatment. The device comprises a treatment unit, the treatment unit comprises a main shell, a first partition plate, a second partition plate and a third partition plate are arranged in the main shell, and the first partition plate, the second partition plate and the third partition plate sequentially divide the inner space of the main shell into a dosing area, a reaction area, a filtering area and a clarification area. A first overflowing opening is formed in the first partition plate, and water in the dosing area can overflow into the reaction area through the first overflowing opening. And a second overflowing opening is formed in the second partition plate. A third overflowing opening is formed in the third partition plate, and water in the filtering area can overflow into the clarifying area through the third overflowing opening. A water inlet and a water outlet are formed in the main shell, the water inlet is communicated with the dosing area, and the water outlet is communicated with the clarifying area. A filtering assembly is arranged above the second overflowing opening in the filtering area, and a main sewage draining opening is formed in the bottom of the filtering area. The device is easy to implement, and the treatment effect can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a wastewater treatment device. Background Technology

[0002] Desulfurization technology, as an important means of reducing sulfur dioxide emissions during coal combustion, is of great significance for improving air quality. However, the wastewater generated during desulfurization, containing high levels of salt and heavy metals, is also a significant concern. The treatment process for desulfurization wastewater mainly includes pretreatment, neutralization, heavy metal removal, flocculation and sedimentation, advanced treatment, and disinfection to achieve compliant discharge and resource utilization.

[0003] Heavy metal removal involves adding a heavy metal precipitant to wastewater, which reacts with heavy metal ions to form insoluble precipitates, which are then removed through sedimentation or filtration. Flocculation sedimentation involves adding a flocculant to wastewater to promote the aggregation of fine particles and colloidal substances into larger particles, which are then separated through sedimentation or filtration.

[0004] When removing heavy metals and performing flocculation and sedimentation, traditional sedimentation devices (sedimentation tanks consisting of several compartments through which wastewater overflows to remove precipitates and flocs) are easy to implement but have poor removal efficiency. Filtration, on the other hand, while offering better removal, is less efficient and more costly. Utility Model Content

[0005] To address the aforementioned problems, the wastewater treatment device provided in this application is not only easy to implement, low in cost, and highly efficient, but also effectively improves the treatment effect.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A wastewater treatment device includes a treatment unit, the treatment unit including a main shell, and a first partition, a second partition and a third partition are provided inside the main shell, and the first partition, the second partition and the third partition divide the internal space of the main shell into a dosing zone, a reaction zone, a filtration zone and a clarification zone in sequence.

[0008] The first partition is provided with a first overflow port, through which water in the dosing zone can overflow into the reaction zone;

[0009] The second baffle is provided with a second flow port;

[0010] The third partition is provided with a third overflow port, through which water in the filtration zone can overflow into the clarification zone;

[0011] The main shell is provided with an inlet and an outlet. The inlet is connected to the dosing area, and the outlet is connected to the clarification area.

[0012] A filter assembly is provided above the second flow port in the filter zone, and a main drain port is provided at the bottom of the filter zone.

[0013] Furthermore, the main housing is provided with a dosing component for adding chemicals to the dosing zone.

[0014] Furthermore, the filter assembly includes a cage-shaped frame, and filter media, which is made of steel wool, is disposed inside the cage-shaped frame.

[0015] Furthermore, a first filter screen is disposed inside the cage-shaped frame below the filter material.

[0016] Furthermore, a second filter screen with multiple layers arranged at an incline is provided above the first filter screen inside the cage-shaped frame, and the second filter screen divides the filter material into several layers.

[0017] Furthermore, the main housing is provided with a cleaning port and a cover plate for sealing the cleaning port above the filtration area, and the filtration assembly can be removed from the cleaning port.

[0018] Furthermore, a sludge collection area with an inverted cone structure is provided below the filtration area, and the main sludge outlet is located at the bottom of the sludge collection area. The main sludge outlet is connected to the main sludge discharge pipe through a first pipe, and the main sludge discharge pipe is connected to the sludge tank through a sludge conveying assembly.

[0019] Furthermore, the first pipe is connected to the main drain outlet via a rubber flexible joint.

[0020] Furthermore, a first auxiliary drain outlet is provided at the bottom of the dosing area, and the first auxiliary drain outlet is connected to the main drain outlet through a second pipe. A second auxiliary drain outlet is provided at the bottom of the clarification area, and the second auxiliary drain outlet is connected to the main drain outlet through a third pipe.

[0021] Furthermore, it also includes a clarification tank, and the inlet of the clarification tank is connected to the outlet of the treatment unit through a fourth pipe, and the outlet of the clarification tank is connected to the outlet of the treatment unit through a pumping assembly.

[0022] The beneficial effects of this utility model are:

[0023] The wastewater treatment device provided in this application embodiment can effectively improve the removal effect of sediments and flocculants by setting a filtration zone between the reaction zone and the clarification zone and setting a filtration component in the filtration tank, without reducing working efficiency or increasing costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a wastewater treatment device provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0026] In the diagram: 111, Main shell; 1111, Dosing zone; 1112, Reaction zone; 1113, Filtration zone; 1114, Clarification zone; 1115, Cleaning port; 1116, Sludge collection zone; 112, First baffle; 1121, First overflow port; 113, Second baffle; 1131, Second overflow port; 114, Third baffle; 1141, Third overflow port; 115, Support frame; 116, Cover plate; 12, Dosing component; 13, Filtration assembly; 131, Cage frame; 1 32. First filter screen; 133. Steel wool; 134. Second filter screen; 14. First pipe; 141. Rubber expansion joint; 142. First drain valve; 15. Main drain pipe; 161. Sludge conveying pump; 162. First shut-off valve; 163. First check valve; 164. Second shut-off valve; 17. Second pipe; 171. Second drain valve; 18. Third pipe; 181. Third drain valve; 191. Motor; 192. Agitator shaft; 1921. Agitator blades;

[0027] 2. Clarifying water tank;

[0028] 3. Fourth pipe; 31. Third shut-off valve;

[0029] 41. Water pump; 42. Fourth shut-off valve; 43. Second check valve; 44. Fifth shut-off valve;

[0030] 5. Sludge tank. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0032] like Figure 1As shown, a wastewater treatment device includes a treatment unit, which includes a main shell 111. A first partition 112, a second partition 113, and a third partition 114 are sequentially arranged along the length of the main shell 111. The first partition 112, the second partition 113, and the third partition 114 divide the internal space of the main shell 111 into a dosing zone 1111, a reaction zone 1112, a filtration zone 1113, and a clarification zone 1114 along the length.

[0033] The first partition 112 is provided with a first overflow port 1121 for connecting the dosing zone 1111 and the reaction zone 1112. The first overflow port 1121 is located at the upper part of the treatment unit, and the wastewater in the dosing zone 1111 can overflow into the reaction zone 1112 through the first overflow port 1121.

[0034] In one specific embodiment, the lower end face of the first partition 112 is fixedly connected to the bottom plate of the main housing 111, the two sides of the first partition 112 are fixedly connected to the side walls of the main housing 111, and there is a certain distance between the upper end face of the first partition 112 and the top plate of the main housing 111, forming the first flow port 1121.

[0035] The second partition 113 is provided with a second flow port 1131 for connecting the reaction zone 1112 and the filtration zone 1113, and the second flow port 1131 is located at the lower part of the processing unit.

[0036] In one specific embodiment, the upper end face of the second partition 113 is fixedly connected to the top plate of the main housing 111, the two sides of the second partition 113 are fixedly connected to the side walls of the main housing 111 respectively, and there is a certain distance between the lower end face of the second partition 113 and the bottom plate of the main housing 111, forming the second flow port 1131.

[0037] The third partition 114 is provided with a third overflow port 1141 for connecting the filtration zone 1113 and the clarification zone 1114. The third overflow port 1141 is located at the upper part of the treatment unit, and the wastewater in the filtration zone 1113 can overflow into the clarification zone 1114 through the third overflow port 1141.

[0038] In one specific embodiment, the lower end face of the third partition 114 is fixedly connected to the bottom plate of the main housing 111, the two sides of the third partition 114 are fixedly connected to the side walls of the main housing 111, and there is a certain distance between the upper end face of the third partition 114 and the top plate of the main housing 111, forming the third flow port 1141.

[0039] The main housing 111 is provided with an inlet and an outlet, wherein the inlet is connected to the dosing zone 1111, the outlet is connected to the clarification zone 1114, and the bottom of the filtration zone 1113 is provided with a main drain outlet.

[0040] A dosing component 12 for adding chemicals into the dosing zone 1111 is provided on the main housing 111 above the dosing zone 1111. In one specific embodiment, the dosing component 12 in this embodiment is a dry powder dosing machine. The dry powder dosing machine is existing technology and can be purchased externally; therefore, its specific structure will not be described in detail here.

[0041] A filter assembly 13 is provided in the filter zone 1113 above the second flow port 1131, and the upper end face of the filter assembly 13 is located above the lower edge of the third flow port 1141.

[0042] In one specific implementation, the filter assembly 13 in this embodiment extends upward to the top of the filter zone 1113.

[0043] like Figure 1 and Figure 2 As shown, the filter assembly 13 includes a cage frame 131, and filter media is disposed inside the cage frame 131.

[0044] In one specific embodiment, the cage frame 131 described in this embodiment is a box-shaped cuboid structure with a closed lower end and an open upper end, and the cage frame 131 is made of steel bars by welding or binding. Support frames 115 for supporting the filter assembly 13 are respectively provided on the second partition 113 and the third partition 114 below the filter assembly 13.

[0045] Furthermore, such as Figure 2 As shown, a first filter screen 132 is disposed inside the cage-shaped frame 131 below the filter media, and the pore size of the first filter screen 132 is 1mm-5mm. The first filter screen 132 can play a preliminary filtration role, thereby effectively blocking large particles from entering and effectively extending the service life of the filter media.

[0046] As one specific implementation, the first filter screen 132 described in this embodiment is made of porous steel wire mesh.

[0047] Furthermore, the filter material is steel wool 133.

[0048] The reason for using steel wool 133 as the filter media is that it has a certain degree of elasticity. When the water quality is good and there are few particles, the steel wool 133 will not be compressed or will be compressed very little, resulting in larger gaps between the steel wool 133 particles, allowing water to flow smoothly and quickly through these gaps. When the water quality is poor and there are many particles, the wastewater is more viscous, which puts pressure on the steel wool 133 particles, causing them to compress and reducing the gaps between them. This effectively filters the particles in the wastewater, ensuring a good filtration effect. When the water quality is good, the filter assembly 13 offers low resistance to water flow, increasing the flow rate per unit time. When the water quality is poor, the filter assembly 13 effectively filters the water, thus ensuring both wastewater treatment efficiency and effectiveness.

[0049] Furthermore, such as Figure 2 As shown, multiple layers of parallel second filter screens 134 are arranged inside the cage-shaped frame 131 above the first filter screen 132, and the second filter screens 134 divide the filter material into several layers. The aperture of the second filter screens 134 is 1mm-50mm, and the edges of the second filter screens 134 are fixedly connected to the cage-shaped frame 131 by welding or binding.

[0050] As one specific implementation, the second filter screen 134 described in this embodiment is made of porous steel wire mesh.

[0051] By setting up the second filter screen 134, the movement range of the filter media can be limited. On the one hand, this prevents the elastic steel wool 133 from being over-compressed, which could lead to direct connection between the second outlet 1131 and the third outlet 1141, forming an ineffective filtration channel and causing short-circuiting. On the other hand, even if the second outlet 1131 and the third outlet 1141 are not directly connected, causing short-circuiting, over-compression of the steel wool 133 can still lead to a significant reduction in water output. Setting up the second filter screen 134 can prevent this significant reduction in water output caused by over-compression of the steel wool 133.

[0052] Furthermore, the second filter screen 134 is arranged at an angle, and the angle of inclination of the second filter screen 134 is 30°-75°.

[0053] Furthermore, such as Figure 1As shown, the main housing 111 is provided with a cleaning port 1115 and a removable cover plate 116 for sealing the cleaning port 1115 above the filter area 1113, and the filter assembly 13 can be removed from the cleaning port 1115.

[0054] In one specific implementation, a flange plate is provided at the upper end of the cleaning port 1115 in this embodiment, and the cover plate 116 is fixedly connected to the flange plate by a bolt assembly. However, when it is necessary to replace the filter assembly 13 or to clean the filter assembly 13, the cover plate 116 can be opened and the filter assembly 13 can be pulled upward to remove the filter assembly 13 from the filter area 1113.

[0055] Furthermore, such as Figure 1 As shown, a sludge collection area 1116 with an inverted cone structure is provided below the filtration area 1113, and the main drain outlet is located at the bottom of the sludge collection area 1116. By setting the sludge collection area 1116 with an inverted cone structure, it is beneficial for sediment or flocculent matter to accumulate and settle here, thereby improving the settling effect.

[0056] Furthermore, the main sewage outlet is connected to the main sewage pipe 15 via the first pipe 14, and the main sewage pipe 15 is connected to the sludge tank 5 via the sludge conveying assembly.

[0057] In one specific implementation, the sludge conveying assembly described in this embodiment includes two sludge conveying pumps 161 connected in parallel. A first shut-off valve 162 is provided on the inlet side of the sludge conveying pump 161, and a first check valve 163 and a second shut-off valve 164 are provided on the outlet side of the sludge conveying pump 161.

[0058] Furthermore, the first pipe 14 is connected to the main drain outlet via a rubber flexible joint 141, and a first drain valve 142 for controlling the opening and closing of the first pipe 14 is provided on the first pipe 14. By providing the rubber flexible joint 141, damage to the first pipe 14 caused by equipment vibration can be reduced; on the other hand, the rubber flexible joint 141 has good flexibility, and the dirt accumulated at the bottom of the dirt collection area 1116 can be loosened by hammering the rubber flexible joint 141, thereby being discharged through the first pipe 14.

[0059] Furthermore, such as Figure 1 As shown, a first auxiliary drain outlet is provided at the bottom of the dosing area 1111. The first auxiliary drain outlet is connected to the main drain outlet 15 through a second pipe 17. A second drain valve 171 for controlling the opening and closing of the second pipe 17 is provided on the second pipe 17.

[0060] Furthermore, such as Figure 1As shown, a second auxiliary drain outlet is provided at the bottom of the clarification zone 1114. The second auxiliary drain outlet is connected to the main drain outlet 15 through a third pipe 18. A third drain valve 181 for controlling the opening and closing of the third pipe 18 is provided on the third pipe 18.

[0061] Furthermore, such as Figure 1 As shown, a wastewater treatment device further includes a clarification tank 2, and the inlet of the clarification tank 2 is connected to the outlet of the treatment unit through a fourth pipe 3. A third shut-off valve 31 for controlling the opening and closing of the fourth pipe 3 is provided on the fourth pipe 3, and the water in the clarification zone 1114 can overflow into the clarification tank 2 through the fourth pipe 3.

[0062] Furthermore, the lower part of the clarified water tank 2 is provided with a water outlet, and the water outlet of the clarified water tank 2 is connected to the water outlet of the treatment unit through a pumping assembly.

[0063] In one specific embodiment, the pumping assembly described in this embodiment includes a water pump 41, a fourth shut-off valve 42 is provided on the inlet side of the water pump 41, and a second check valve 43 and a fifth shut-off valve 44 are provided on the outlet side of the water pump 41.

[0064] By installing a pumping assembly between the clarification tank 2 and the treatment unit, the water in the clarification tank 2 is pumped to the clarification zone 1114 of the treatment unit, which allows the water in the clarification zone 1114 to flow back into the filtration zone 1113, thereby backwashing the filtration assembly 13.

[0065] Furthermore, a stirring component is provided on the main housing 111 above the dosing zone 1111. The stirring component is used to stir the wastewater in the dosing zone 1111, so that the wastewater and the agent added by the dosing component 12 are fully mixed.

[0066] The dosing component 12 includes a motor 191, which is fixedly connected to the main housing 111 via a motor 191 mount (not shown in the figure). A stirring shaft 192 is rotatably mounted on the top plate of the main housing 111, and stirring blades 1921 are mounted on the stirring shaft 192 inside the main housing 111. The upper end of the stirring shaft 192 is connected to the power output shaft of the motor 191 via a coupling (not shown in the figure).

[0067] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.

[0068] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A wastewater treatment apparatus, characterized by: The utility model provides a water purification device, which comprises a processing unit, the processing unit comprises a main shell (111), a first partition plate (112), a second partition plate (113) and a third partition plate (114) are arranged in the main shell (111), and the first partition plate (112), the second partition plate (113) and the third partition plate (114) sequentially divide the internal space of the main shell (111) into a dosing area (1111), a reaction area (1112), a filtering area (1113) and a clarification area (1114). A first overflow port (1121) is arranged on the first partition plate (112), and water in the dosing area (1111) can overflow into the reaction area (1112) through the first overflow port (1121). A second overflow port (1131) is arranged on the second partition plate (113). A third overflow port (1141) is arranged on the third partition plate (114), and water in the filtering area (1113) can overflow into the clarification area (1114) through the third overflow port (1141). A water inlet and a water outlet are arranged on the main shell (111), the water inlet is communicated with the dosing area (1111), and the water outlet is communicated with the clarification area (1114). A filtering assembly (13) is arranged above the second overflow port (1131) in the filtering area (1113), and a main blowdown port is arranged at the bottom of the filtering area (1113).

2. A wastewater treatment device according to claim 1, characterised in that: A dosing component (12) for adding reagents into the dosing area (1111) is arranged on the main shell (111).

3. A wastewater treatment device according to claim 1, wherein: The filtering assembly (13) comprises a cage (131), a filter material is arranged in the cage (131), and the filter material is a steel ball (133).

4. A wastewater treatment apparatus as claimed in claim 3, wherein: A first filter screen (132) is arranged below the filter material in the cage (131).

5. A wastewater treatment apparatus as claimed in claim 4, wherein: A plurality of second filter screens (134) are arranged above the first filter screen (132) in the cage (131) in a tilted manner, and the second filter screens (134) divide the filter material into a plurality of layers.

6. The wastewater treatment device of claim 1, wherein: A cleaning port (1115) and a cover plate (116) for sealing the cleaning port (1115) are arranged above the filtering area (1113) on the main shell (111), and the filtering assembly (13) can be taken out from the cleaning port (1115).

7. The wastewater treatment device of claim 1, wherein: A sludge collecting area (1116) in an inverted conical structure is arranged below the filtering area (1113), the main blowdown port is arranged at the bottom of the sludge collecting area (1116), the main blowdown port is connected with a blowdown main pipeline (15) through a first pipeline (14), and the blowdown main pipeline (15) is connected with a sludge tank (5) through a sludge conveying assembly.

8. A wastewater treatment apparatus as claimed in claim 7, characterised in that: The first pipeline (14) is connected with the main blowdown port through a rubber flexible joint (141).

9. A wastewater treatment device according to claim 7, wherein: The bottom of the dosing zone (1111) is provided with a first auxiliary blowdown port, which is connected with the blowdown main pipeline (15) through a second pipeline (17); the bottom of the clarification zone (1114) is provided with a second auxiliary blowdown port, which is connected with the blowdown main pipeline (15) through a third pipeline (18).

10. The wastewater treatment device of claim 7, wherein: A clarified water tank (2) is further included, and the water inlet of the clarified water tank (2) is connected with the water outlet of the treatment unit through a fourth pipeline (3); the water outlet of the clarified water tank (2) is connected with the water outlet of the treatment unit through a pumping assembly.

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