Wastewater treatment device

Abstract

The utility model discloses a wastewater treatment device and belongs to the technical field of wastewater treatment. The device comprises a plurality of reactor units which are sequentially communicated and are distributed in a stepped manner, wherein the height difference between every two adjacent reactor units is 100-300mm; the reactor unit comprises a reactor main body, a water inlet is formed in the lower part of the reactor main body, and a water outlet is formed in the upper part; a water distribution assembly and a filler assembly are sequentially arranged from the water outlet direction to the water inlet direction; the water distribution assembly comprises a water distribution main pipe and a plurality of water distribution branch pipes communicated with the water distribution main pipe; the water distribution main pipe is communicated with wastewater; a plurality of open holes are formed in the water distribution branch pipes, and the open holes are inclined downwards. The wastewater treatment device is mainly used for improving the wastewater treatment effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field more specifically, relate to a wastewater treatment device. BACKGROUND

[0002] Wastewater treatment is an important part of the environmental protection field, the main goal includes removing or reducing organic matter and other pollutants in water, achieving water quality improvement and specific discharge target to reduce the impact on the environment. At present, wastewater treatment includes physical adsorption method, chemical oxidation method, biological treatment method. Among them, biological treatment method has been widely concerned due to the advantages of low cost, low cost and environmental friendly. Therefore, there are also many wastewater treatment devices using biological method, such as biological aerated filter, UASB reactor, which can be applied to different wastewater treatment processes.

[0003] The Chinese patent with the authorization announcement number CN213446705U discloses a sequencing batch biological aerated filter, which provides a sequencing batch biological aerated filter, which includes a group of sequentially arranged structural same biological aerated filters, the biological aerated filter includes a pool body, a supporting layer arranged in the pool body close to the pool bottom, a filter material layer supported by the supporting layer, an aeration system arranged in the filter material layer, a clear water area formed between the filter material layer and the pool top, a water collecting area formed from the supporting layer to the pool bottom, a water inlet pipe arranged on the pool top, and a drainage pipe arranged on the pool bottom. And by filling zeolite, activated carbon, limestone, pyrite and other fillers in the biological aerated filter, ammonia nitrogen, organic matter, total nitrogen and total phosphorus in wastewater can be removed.

[0004] However, in the above technical solution, wastewater cannot be evenly introduced into the pool body from the water inlet pipe on the top of the biological aerated filter, and the dispersion effect is poor, the wastewater treatment effect is different at different positions, resulting in poor wastewater treatment effect. Moreover, the water inlet of each biological aerated filter is arranged on the pool top, and the water pump and other power equipment are needed to transfer wastewater between different biological aerated filters, which increases the equipment cost, operation cost and energy consumption. UTILITY MODEL CONTENT

[0005] 1. Technical problem to be solved by the utility model

[0006] The utility model aims at overcoming the poor wastewater treatment effect of the wastewater treatment device in the prior art, and provides a wastewater treatment device with better treatment effect.

[0007] 2. Technical scheme

[0008] To achieve the above purpose, the technical scheme provided by the utility model is:

[0009] The utility model relates to a wastewater treatment device,

[0010] The device includes multiple reactor units connected in sequence and arranged in a stepped manner, with a height difference of 100-300 mm between two adjacent reactor units.

[0011] The reactor unit includes a reactor body, with an inlet at the bottom and an outlet at the top.

[0012] From the outlet direction along the inlet direction, water distribution components and packing components are installed in sequence;

[0013] The reactor body has a packing assembly inlet on its side. The packing assembly is inserted into the reactor body through the packing assembly inlet and is detachably connected to the reactor body.

[0014] The packing assembly includes a packing cylinder, from the bottom to the top of the packing cylinder, there are M packing layers, which are sequentially referred to as the first, the second, ..., the (M-1)th, and the Mth, where M ≥ 2, and there is a gap between two adjacent packing layers, and the packing layers are filled with packing material.

[0015] The water distribution assembly includes a main water distribution pipe and several branch water distribution pipes connected to the main water distribution pipe.

[0016] The main water distribution pipe is connected to the wastewater via a water pump; the branch water distribution pipes are provided with several openings, which are inclined downwards.

[0017] It should be noted that the sequentially connected, stepped reactor units effectively reduce the need for pumps and other equipment between adjacent reactor units, lowering equipment costs and operating energy consumption. The packing layer within the packing assembly effectively reduces pressure drop, allowing wastewater to be treated sequentially in multiple reactor units. The water distribution assembly allows wastewater to enter the reactor body more evenly, with better dispersion than a storage tank, thus improving the wastewater treatment effect of the packing assembly. Furthermore, changing the wastewater inflow rate or the size of the reactor body does not affect the dispersion effect of the water distribution assembly, broadening the application scenarios of the treatment device. On the other hand, compared to storage tanks located outside the reactor body, the water distribution assembly, located inside the reactor body, effectively reduces the footprint of the reaction device.

[0018] It should also be noted that when operating in conjunction with multiple reactor units distributed in a stepped manner, the wastewater comes into more uniform contact with the packing material in the packing layer, ensuring good effluent quality; when replacing the packing material, the packing assembly can be completely disassembled and removed through the packing assembly inlet, making the operation simple and convenient.

[0019] Furthermore, the water distribution component is at least 50mm away from the bottom of the reactor body.

[0020] Preferably, the water distribution component is located 50–200 mm from the bottom of the reactor body.

[0021] Furthermore, all the water distribution branch pipes are vertically connected to the main water distribution pipe;

[0022] The water distribution branch pipes are arranged at equal intervals, and the openings are evenly distributed on the water distribution branch pipes.

[0023] It should be noted that connecting the main water distribution pipe and the branch water distribution pipe in this way facilitates more even addition into the reactor body and results in better dispersion.

[0024] Furthermore, the axis of the opening forms an angle of 30° to 60° with the vertical direction.

[0025] Furthermore, the reactor body also includes a settling zone, which is disposed above the packing assembly;

[0026] The height of the settlement zone is 1 / 2 to 1 / 10 of the height from the bottom of the first filler layer to the top of the Mth filler layer.

[0027] Furthermore, an overflow weir is provided above the settlement zone;

[0028] The outer wall of the overflow weir is connected to a water collection trough, and the water collection trough is connected to a water outlet pipe.

[0029] Furthermore, the filler layer includes a support member and filler placed on the support member;

[0030] The supporting component has several holes; the packing includes sulfur autotrophic denitrification packing.

[0031] Furthermore, the height of the gap between two adjacent filler layers is 5–30 mm.

[0032] Furthermore, a vent valve is provided at the bottom of the reactor body.

[0033] Furthermore, the main water distribution pipe is connected to an inlet pipe via an inlet, and the inlet pipe is connected to the wastewater.

[0034] 3. Beneficial effects

[0035] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0036] In the wastewater treatment device provided by this utility model, the sequentially connected reactor units in a stepped distribution effectively reduce the need for pumps and other devices between adjacent reactor units, thus lowering equipment costs and operating energy consumption. The packing layer within the packing assembly effectively reduces pressure drop, allowing wastewater to be treated sequentially in multiple reactor units. The water distribution assembly allows wastewater to enter the reactor body more evenly, and its dispersion effect is better than that of a storage tank, which is beneficial to improving the wastewater treatment effect of the packing assembly. Moreover, changing the wastewater inflow rate or the size of the reactor body does not affect the dispersion effect of the water distribution assembly, broadening the application scenarios of the treatment device. On the other hand, compared to storage tanks or other devices located outside the reactor body, the water distribution assembly located inside the reactor body effectively reduces the footprint of the reaction device.

[0037] When operating in conjunction with multiple reactor units arranged in a stepped manner, the wastewater contacts the packing material in the packing layer more evenly, ensuring good effluent quality. When replacing the packing material, the entire packing assembly can be disassembled and removed through the packing assembly inlet, making the operation simple and convenient. The reactor has a reasonable structural design, a simple principle, and is easy to promote and use. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a wastewater treatment device according to the present invention.

[0039] Figure 2 This is a left-side structural schematic diagram of the reactor body and water distribution assembly of this utility model.

[0040] Figure 3 This is a top view of the reactor body and water distribution assembly of this utility model.

[0041] Figure 4 This is a bottom view of the structure of a water distribution component according to the present invention.

[0042] Figure 5 This is a schematic diagram of the main cross-sectional structure of a water distribution branch pipe according to the present invention.

[0043] Figure 6 This is a left-side structural schematic diagram of a filler assembly according to the present invention.

[0044] Figure 7 This is a partial cross-sectional structural diagram of the reactor body and packing assembly according to the present invention.

[0045] Explanation of the labels in the diagram:

[0046] 100. Reactor Unit;

[0047] 110. Reactor body; 111. Flange interface; 112. Flange bolt hole; 120. Inlet pipe; 121. Inlet valve; 122. Water pump; 130. Overflow weir; 140. Water collection tank; 150. Outlet pipe; 151. Outlet valve; 160. Water distribution assembly; 161. Main water distribution pipe; 162. Branch water distribution pipe; 1621. Opening; 170. Vent valve; 180. Settling zone; 190. Packing assembly; 191. Packing cylinder; 1911. Flange blind plate; 192. Packing layer; 1921. Support component. Detailed Implementation

[0048] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0049] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0050] Example

[0051] Combination Figures 1-7 This embodiment of a wastewater treatment device includes multiple reactor units 100 connected in sequence and arranged in a stepped manner, that is, the reactor units 100 are arranged along... Figure 1 The reactor units are arranged in a stepped distribution, with a height difference of 100–300 mm between adjacent units 100. The number of reactor units can be 2, 3, 4, or other quantities. Each reactor unit 100 includes a reactor body 110, with an inlet at the bottom and an outlet at the top. A water distribution assembly 160 and a packing assembly 190 are sequentially arranged from the outlet direction along the inlet direction. As an optional implementation, the reactor body 110 can be a cylindrical body with a bottom plate at the bottom and an open top, where the opening serves as the outlet; alternatively, it can be a cylindrical body with a bottom plate at both the bottom and top, where the outlet is located on the top bottom plate. The reactor body 110 can be square, circular, or other shapes.

[0052] A packing assembly inlet is provided on the side of the reactor body 110. The packing assembly 190 is inserted into the reactor body 110 through the packing assembly inlet and is detachably connected to the reactor body 110. The packing assembly 190 includes a packing cylinder 191, from the bottom to the top of the packing cylinder 191, with M packing layers 192, sequentially labeled as the first, second, ..., M-1th, and Mth, where M ≥ 2. There is a gap between two adjacent packing layers 192, and the packing layers 192 are filled with packing material. As an optional embodiment, the packing cylinder 191 can be a cylinder with the same shape as the reactor body 110, but without bottom plates at the top and bottom. The M packing layers 192 are arranged in parallel inside the packing cylinder 191. The water distribution assembly 160 includes a main water distribution pipe 161 and several branch water distribution pipes 162 connected to the main water distribution pipe 161; the main water distribution pipe 161 is connected to wastewater through a water pump 122, and several openings 1621 are provided on the branch water distribution pipes 162, with the openings 1621 tilted downward.

[0053] It should be noted that the sequentially connected, stepped reactor units 100 effectively reduce the need for pumps 122 and other devices between adjacent reactor units 100, thus reducing equipment costs and operating energy consumption. The packing layer 192 within the packing assembly 190 effectively reduces pressure drop, allowing wastewater to be treated sequentially in multiple reactor units 100. The water distribution assembly 160 allows wastewater to enter the reactor body 110 more evenly, and the dispersion effect is better than that of a water storage tank, which is beneficial to improving the wastewater treatment effect of the packing assembly 190. Moreover, changing the wastewater inflow rate or the size of the reactor body 110 will not affect the dispersion effect of the water distribution assembly 160, thus broadening the application scenarios of the treatment device. On the other hand, compared to water storage tanks and other devices located outside the reactor body 110, the water distribution assembly 160 located inside the reactor body 110 effectively reduces the footprint of the treatment device.

[0054] On the other hand, when operating in conjunction with multiple reactor units 100 distributed in a stepped manner, the wastewater comes into more uniform contact with the packing material in the packing layer 192, ensuring good effluent quality; when replacing the packing material, the packing assembly 190 can be completely disassembled and removed through the packing assembly inlet, making the operation simple and convenient.

[0055] As an optional implementation, the device includes four reactor units 100. The reactor body 110 within each reactor unit 100 is a rectangular cylindrical body, and the packing cylinder 191 is also a rectangular cylindrical body. The outer wall of the packing cylinder 191 is substantially the same size as the inner wall of the reactor body 110, achieving a good fit to ensure sufficient treatment of the wastewater in the reactor body 110. A flange interface 111 is provided at the inlet of the packing assembly on the side of the reactor body 110, and a flange blind plate 1911 is provided on one side of the packing cylinder 191. The flange blind plate 1911 and the flange interface 111 are connected through flange bolt holes 112. Furthermore, a sealing ring can be provided at the connection between the flange blind plate 1911 and the flange interface 111 to improve sealing performance.

[0056] Furthermore, the water distribution component 160 is at least 50mm away from the bottom of the reactor body 110. Preferably, the water distribution component 160 is 50-200mm away from the bottom of the reactor body 110, which can mitigate the impact of wastewater on the reactor body 110. The packing layers 192 are arranged in parallel, and the height of the gap between two adjacent packing layers 192 is 5-30mm, which can reasonably control the packing density and ensure the treatment effect. As a preferred embodiment, the height of the gap between any two adjacent packing layers 192 is the same.

[0057] Combination Figure 4 , Figure 5 In a preferred embodiment, the water distribution assembly 160 includes a main water distribution pipe 161 and several branch water distribution pipes 162, all perpendicularly connected to the main water distribution pipe 161. The branch water distribution pipes 162 are arranged at equal intervals, and the openings 1621 are evenly distributed on the branch water distribution pipes 162, which facilitates more uniform addition of wastewater into the reactor body 110 and improves the dispersion effect. In an optional embodiment, the axis of the openings 1621 forms an angle of 30° to 60° with the vertical direction.

[0058] Furthermore, combined Figure 7The reactor body 110 also includes a settling zone 180, which is located above the packing assembly 190. The height of the settling zone 180 is 1 / 2 to 1 / 10 of the height from the bottom of the first packing layer 192 to the top of the Mth packing layer 192, to achieve effective settling of suspended solids and microorganisms and prevent loss, thus ensuring the wastewater treatment effect. An overflow weir 130 is provided above the settling zone 180; a water collection tank 140 is connected to the outer wall of the overflow weir 130, and a water outlet pipe 150 is connected to the water collection tank 140. The water collection tank 140 can be used to collect the treated wastewater after settling in the settling zone 180. The treated wastewater in the water collection tank 140 can be discharged through the water outlet pipe 150. For example, if the treated wastewater in the water collection tank 140 does not meet the standards, it can be discharged into the next reactor unit 100 for further treatment. In one specific implementation, the cross-sectional area of ​​the overflow weir 130 is the same as that of the settlement zone 180. The water collection trough 140 is fixedly connected to the outer wall of the overflow weir 130, and the fixed connection can be achieved by welding. Furthermore, the bottom of the water collection trough 140 is 50-100mm lower than the highest point of the overflow weir 130, the top of the water collection trough 140 is 10-50mm higher than the highest point of the overflow weir 130, and the width of the water collection trough 140 is 30-100mm. A water outlet valve 151 is installed on the water outlet pipe 150 connected to the water collection trough 140 to control the water flow rate.

[0059] Furthermore, the packing layer 192 includes a support member 1921 and packing material placed on the support member 1921; the support member 1921 has several holes; the packing material includes sulfur autotrophic denitrification packing material. The support member 1921 can be connected to the packing cylinder 191 on all four sides, and the sulfur autotrophic denitrification packing material can be used for nitrogen and phosphorus removal from wastewater. As an optional embodiment, the support member 1921 is a filter screen, on which sulfur autotrophic denitrification packing material is placed; the filter screen material can be polytetrafluoroethylene or metal. As another optional embodiment, the packing layer 192 includes two support members 1921, with autotrophic denitrification packing material filled between the two support members 1921, which can better fix the packing material.

[0060] Furthermore, a vent valve 170 is provided at the bottom of the reactor body 110, which can be used to discharge the wastewater remaining in the reactor body 110.

[0061] Furthermore, the main water distribution pipe 161 is connected to an inlet pipe 120 via an inlet, which is connected to the wastewater. An inlet valve 121 and a water pump 122 are connected to the inlet pipe 120 to adjust the inlet flow rate. Adjacent reactor units 100 can be connected via inlet pipes 120 and outlet pipes 150, which can be connected by a pipeline.

[0062] The wastewater treatment device in this embodiment is used in the following steps: Sulfur autotrophic denitrification packing is filled into the packing layer 192 of the packing assembly 190, and the packing assembly 190 is assembled into the reactor body 110 through the packing assembly inlet on the side of the reactor body 110 and fixed. Then, microorganisms are inoculated to form a biofilm. Next, the reactor units 100 are connected sequentially, and the reaction device is started. Wastewater is introduced into the started treatment device through the inlet pipe 120, and the wastewater enters the reactor body 110 relatively evenly through the main water distribution pipe 161 and branch water distribution pipes 162 in the water distribution assembly 160. The wastewater then undergoes effective nitrogen and phosphorus removal treatment through the packing layer 192 in the packing assembly 190. Specifically, wastewater is first pumped into the first reactor unit 100 of the reaction device by the water pump 122. After treatment by the first reactor unit 100, the wastewater enters the second reactor unit 100 for treatment through the outlet pipe 150 on the collection tank 140. It is not necessary to use the water pump 122 to transfer the wastewater; this process is repeated sequentially. Microorganisms can be inoculated using anaerobic sludge or inoculants containing sulfur-autotrophic denitrifying bacteria.

[0063] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wastewater treatment device, characterized in that: The device includes multiple reactor units (100) connected in sequence and arranged in a stepped manner, with the height difference between two adjacent reactor units (100) being 100 to 300 mm. The reactor unit (100) includes a reactor body (110), with an inlet at the bottom and an outlet at the top; a water distribution assembly (160) and a packing assembly (190) are arranged sequentially from the outlet direction along the inlet direction. The reactor body (110) is provided with a packing assembly inlet on its side. The packing assembly (190) is inserted into the reactor body (110) through the packing assembly inlet and is detachably connected to the reactor body (110). The packing assembly (190) includes a packing cylinder (191), from the bottom to the top of the packing cylinder (191), there are M packing layers (192), which are sequentially referred to as the first, the second, ... the M-1th and the Mth, where M≥2, and there is a gap between two adjacent packing layers (192), and the packing layer (192) is filled with packing. The water distribution assembly (160) includes a main water distribution pipe (161) and a plurality of branch water distribution pipes (162) connected to the main water distribution pipe (161); The main water distribution pipe (161) is connected to the wastewater via a water pump (122); the branch water distribution pipe (162) is provided with several openings (1621), which are inclined downwards.

2. The wastewater treatment device according to claim 1, characterized in that: The water distribution component (160) is at least 50 mm away from the bottom of the reactor body (110).

3. The wastewater treatment device according to claim 2, characterized in that: The water distribution branch pipes (162) are all vertically connected to the water distribution main pipe (161); The water distribution branch pipes (162) are arranged at equal intervals, and the openings (1621) are evenly distributed on the water distribution branch pipes (162).

4. The wastewater treatment apparatus according to any one of claims 1 to 3, characterized in that: The axis of the opening (1621) forms an angle of 30° to 60° with the vertical direction.

5. The wastewater treatment device according to claim 4, characterized in that: The reactor body (110) also includes a settling zone (180) which is disposed above the packing assembly (190); The height of the settling zone (180) is 1 / 2 to 1 / 10 of the height from the bottom of the first filler layer (192) to the top of the Mth filler layer (192).

6. The wastewater treatment device according to claim 5, characterized in that: An overflow weir (130) is provided above the settlement zone (180); The outer wall of the overflow weir (130) is connected to a water collection trough (140), and the water collection trough (140) is connected to a water outlet pipe (150).

7. The wastewater treatment device according to claim 6, characterized in that: The packing layer (192) includes a support member (1921) and packing material placed on the support member (1921); the support member (1921) is provided with a plurality of holes; the packing material includes sulfur autotrophic denitrification packing material.

8. The wastewater treatment device according to claim 7, characterized in that: The height of the gap between two adjacent filler layers (192) is 5 to 30 mm.

9. The wastewater treatment device according to claim 8, characterized in that: A vent valve (170) is provided at the bottom of the reactor body (110).

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