Horizontal integrated sewage treatment device suitable for northern alpine regions

Abstract

The utility model provides a horizontal integrated sewage treatment device suitable for northern alpine regions, and belongs to the technical field of sewage treatment. The sewage treatment device mainly aims at solving the problems that an existing sewage treatment device is complex in structure and unstable in effluent quality and comprises a device body which is horizontally arranged on the ground and provided with a rectangular shell, a pre-nitrification zone, an anaerobic zone, an anoxic zone, an aerobic zone and an inclined tube settling zone are sequentially arranged in the device body at intervals, and a fan is arranged on one side of the device body. A fan is arranged in the device body, an air outlet of the fan is connected with an aeration header pipe, a sludge discharge pipe is arranged in the device body, a water outlet and a water inlet are formed in the two ends of the device body respectively, combined biological filler is arranged in the pre-nitrification area, and a sludge return pipe submerged into the pre-nitrification area is arranged in the pre-nitrification area. The equipment cost and the operation energy consumption are reduced, the effluent quality is stable, and the microbial biomass and the sludge age are improved due to the built-in combined biological filler and the suspended biological filler.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and more specifically, it relates to a horizontal integrated wastewater treatment device suitable for cold northern regions. Background Technology

[0002] With the acceleration of urbanization and increasing emphasis on environmental protection in my country, wastewater treatment has become a crucial link in ensuring the sustainable development of the ecological environment. In the cold northern regions, wastewater treatment faces more severe challenges than in other areas due to their unique geographical and climatic conditions.

[0003] Traditional integrated wastewater treatment equipment currently mainly adopts wastewater treatment processes such as AO, AAO, and AAO+MBR. However, when applied to small-scale decentralized domestic wastewater treatment in villages and towns, it suffers from drawbacks such as complex equipment structure, high construction and operating costs, and difficult operation and maintenance. Therefore, designing a small-scale wastewater treatment equipment with a simple structure, fewer electromechanical devices, stable operation, and convenient operation and maintenance management, suitable for decentralized small and medium-sized wastewater treatment in northern my country, has become an urgent problem to be solved. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a horizontal integrated sewage treatment device suitable for cold northern regions, thus solving the technical problems of complex structure and unstable effluent quality in traditional sewage treatment devices.

[0005] The purpose and effectiveness of this utility model, a horizontal integrated sewage treatment device suitable for cold northern regions, are achieved through the following specific technical means:

[0006] A horizontal integrated wastewater treatment device suitable for cold northern regions includes a horizontally mounted device body with a rectangular outer shell. The device body contains a prenitrification zone, an anaerobic zone, an anoxic zone, an aerobic zone, and an inclined tube sedimentation zone, spaced sequentially at intervals. A blower is installed on one side of the device body, and the blower outlet is connected to an aeration main pipe. A sludge discharge pipe is installed inside the device body. An outlet and an inlet are respectively located at both ends of the device body.

[0007] The prenitrification zone is equipped with a combined biological packing material, and a sludge return pipe that is submerged in the prenitrification zone is installed inside it.

[0008] The anaerobic zone is equipped with combined biological packing material, and the anaerobic zone is connected to the prenitrification zone;

[0009] Both the anoxic zone and the aerobic zone are equipped with suspended biological packing material, and the anoxic zone is equipped with a first aeration branch pipe that penetrates into its interior.

[0010] The inclined tube sedimentation zone is equipped with a second aeration branch pipe that is submerged inside it, and the bottom of the inclined tube sedimentation zone is equipped with an inclined tube settling element.

[0011] As a further embodiment of this utility model, the prenitrification zone is connected to the inlet, the inclined tube sedimentation zone is connected to the outlet, an inlet pipe is provided at one end of the inlet, and an outlet pipe is provided at one end of the outlet.

[0012] As a further embodiment of this utility model, the anoxic zone is connected to the aerobic zone, a partition is provided between the anoxic zone and the aerobic zone, and the anoxic zone and the aerobic zone circulate through a first aeration branch pipe.

[0013] As a further embodiment of this utility model, the sludge return pipe is connected to the sludge discharge pipe, and one end of the sludge discharge pipe is submerged to the bottom of the inclined tube sedimentation zone.

[0014] As a further embodiment of this utility model, the first aeration branch pipe is connected to the aeration main pipe, and the second aeration branch pipe is connected to the aeration main pipe.

[0015] As a further embodiment of this utility model, the top of the device body is provided with a detachable cover plate, and the top of the cover plate is provided with a communication hole for the first aeration branch pipe, the second aeration branch pipe and the sludge return pipe to pass through.

[0016] As a further embodiment of this utility model, the multiple sets of connecting holes correspond to the prenitrification zone, the anoxic zone, and the inclined tube sedimentation zone, respectively.

[0017] As a further embodiment of this utility model, multiple sets of indicator grooves are respectively opened on both sides of the device body, corresponding to the prenitrification zone, the anaerobic zone, the anoxic zone, the aerobic zone, and the inclined tube sedimentation zone.

[0018] As a further embodiment of this utility model, the combined biological packing material is a combination packing material of polypropylene corrugated plate and elastic fiber bundle, and the suspended biological packing material is a porous polyethylene sphere packing material.

[0019] As a further embodiment of this invention, a filter plate is provided at the top of the inclined tube sedimentation zone.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This device incorporates a combination of biological fillers, suspended biological fillers, and a micro-aeration process, significantly increasing the amount of microorganisms and sludge age. It also exhibits strong resistance to shock loads. Compared to traditional wastewater treatment devices, it improves and stabilizes effluent quality. Furthermore, the device has low construction and operating costs, requiring only one blower and eliminating the need for complex electromechanical equipment such as internal and external return pumps, thus reducing equipment costs and operating energy consumption. Finally, the device has a simple structure and produces relatively little electrical equipment and sludge, making it easier for users to maintain. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a horizontal integrated sewage treatment device suitable for cold regions in northern China according to this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the main body of a horizontal integrated sewage treatment device suitable for cold northern regions according to this utility model.

[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0025] 100. Device body; 101. Indicator trough; 102. Outlet; 103. Outlet pipe; 104. Inlet; 105. Inlet pipe; 106. Cover plate; 107. Connecting hole; 201. Prenitrification zone; 202. Anaerobic zone; 203. Anoxic zone; 204. Aerobic zone; 205. Inclined tube sedimentation zone; 206. Combined biological packing material; 207. Suspended biological packing material; 209. Inclined tube settling element; 210. Filter plate; 211. Baffle plate; 301. Blower; 302. Aeration main pipe; 303. First aeration branch pipe; 304. Second aeration branch pipe; 401. Sludge return pipe; 402. Sludge discharge pipe. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] Example:

[0028] As attached Figure 1 To be continued Figure 2 As shown:

[0029] This utility model provides a horizontal integrated sewage treatment device suitable for cold regions in northern China. It includes a device body 100 that is horizontally installed on the ground and has a rectangular shell. The device body 100 is provided with a prenitrification zone 201, an anaerobic zone 202, an anoxic zone 203, an aerobic zone 204 and an inclined tube sedimentation zone 205 arranged sequentially. A blower 301 is provided on one side of the device body 100. The air outlet of the blower 301 is connected to an aeration main pipe 302. A sludge discharge pipe 402 is provided inside the device body 100. An outlet 102 and an inlet 104 are respectively provided at both ends of the device body 100.

[0030] Furthermore, the prenitrification zone 201 is connected to the inlet 104, and the inclined tube sedimentation zone 205 is connected to the outlet 102. One end of the inlet 104 is provided with an inlet pipe 105, and one end of the outlet 102 is provided with an outlet pipe 103. Users can connect external pipelines to the inlet pipe 105 to allow external sewage to enter the device body 100 through the inlet pipe 105 and the inlet 104, thereby performing normal sewage treatment operations. After the sewage has undergone sewage treatment, it is discharged through the outlet pipe 103 and the outlet 102.

[0031] The prenitrification zone 201 is equipped with a combined biological packing material 206, and the combined biological packing material 206 is equipped with a sludge return pipe 401 that is submerged in the prenitrification zone 201.

[0032] The anaerobic zone 202 is equipped with a combined biological packing material 206, and the anaerobic zone 202 is connected to the prenitrification zone 201.

[0033] Furthermore, the prenitrification zone 201 decomposes organic matter in the wastewater as an electron donor for the denitrification reaction, reducing the load on subsequent aerobic treatment. The combined biological packing material 206 used in the prenitrification zone 201 and the anaerobic zone 202 is a combination of polypropylene corrugated plate and elastic fiber bundle packing material. The polypropylene corrugated plate can provide a large specific surface area to fix the denitrifying bacteria biofilm, while the elastic fiber bundle can enhance water flow disturbance and prevent packing blockage (especially for wastewater with high suspended solids in cold northern regions). Wastewater passing through the prenitrification zone 201 and the anaerobic zone 202 flows into the anoxic zone 203 and the aerobic zone 204.

[0034] Suspended biological packing material 207 is installed in both the anoxic zone 203 and the aerobic zone 204. The anoxic zone 203 is equipped with a first aeration branch pipe 303 that penetrates into it.

[0035] Furthermore, the anoxic zone 203 is connected to the aerobic zone 204, and a partition 211 is provided between the anoxic zone 203 and the aerobic zone 204. The anoxic zone 203 and the aerobic zone 204 circulate through the first aeration branch pipe 303.

[0036] Specifically, the wastewater flowing into the anoxic zone 203 and the aerobic zone 204 can be circulated through the first aeration branch pipe 303. The remaining organic matter is degraded by aerobic microorganisms. The suspended biological packing material 207 used in the anoxic zone 203 is a porous polyethylene ball packing material. The pores inside the porous polyethylene ball are rich in nitrifying bacteria, and the outer surface is attached with heterotrophic bacteria to form a layered biofilm. The airflow driven by aeration causes the carrier to roll, which promotes the renewal of the biofilm.

[0037] A second aeration branch pipe 304 is installed inside the inclined tube sedimentation zone 205, and an inclined tube settling element 209 is installed at the bottom of the inclined tube sedimentation zone 205.

[0038] Specifically, the inclined plate sedimentation component 209 is an inclined plate sedimentation structure with an inclination angle of 60 degrees, which can realize the rapid separation of sludge and treated water. The settled sludge is returned to the front end of the aerobic zone 204 by gravity to maintain the sludge concentration of the system. In addition, the surface of the inclined plate is coated with a hydrophobic coating (such as polytetrafluoroethylene) to reduce the risk of blockage caused by ice crystal adhesion in cold northern regions.

[0039] Furthermore, a filter plate 210 is installed at the top of the inclined tube sedimentation zone 205, which can filter the water that is about to flow out of the outlet 102 again and intercept the detached biofilm.

[0040] The sludge return pipe 401 is connected to the sludge discharge pipe 402, and one end of the sludge discharge pipe 402 is submerged to the bottom of the inclined tube sedimentation zone 205.

[0041] The first aeration branch pipe 303 is connected to the aeration main pipe 302, and the second aeration branch pipe 304 is connected to the aeration main pipe 302. Electric heating tape (not shown in the attached diagram) is laid on the outer wall of the first aeration branch pipe 303, the aeration main pipe 302 and the second aeration branch pipe 304. When started, it is heated to 8-10℃ to prevent the aeration holes from freezing and clogging in the northern winter.

[0042] Understandably, through the cooperation of the first aeration branch pipe 303, the aeration main pipe 302, and the second aeration branch pipe 304, the bubbles generated by the first aeration branch pipe 303, the aeration main pipe 302, and the second aeration branch pipe 304 can form an air lift effect between the anoxic zone 203 and the aerobic zone 204, so as to pump-free return of the mixed liquid from the top of the aerobic zone 204 to the anoxic zone 203, replacing the traditional internal return pump and reducing the complexity of the equipment and energy consumption.

[0043] The device body 100 is provided with a detachable cover plate 106 on the top, and the top of the cover plate 106 is provided with a communication hole 107 for the passage of the first aeration branch pipe 303, the second aeration branch pipe 304 and the sludge return pipe 401.

[0044] Multiple sets of connecting holes 107 correspond to the prenitrification zone 201, the anoxic zone 203, and the inclined tube sedimentation zone 205, respectively. Users can install the first aeration branch pipe 303, the second aeration branch pipe 304, and the sludge return pipe 401 through the connecting holes 107.

[0045] Multiple sets of indicator troughs 101 are respectively opened on both sides of the device body 100, which are connected to the prenitrification zone 201, anaerobic zone 202, anoxic zone 203, aerobic zone 204 and inclined tube sedimentation zone 205.

[0046] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A horizontal integrated sewage treatment device suitable for cold northern regions, characterized in that: The device includes a horizontally mounted, rectangular-shell-shaped main body (100). The main body (100) contains a prenitrification zone (201), an anaerobic zone (202), an anoxic zone (203), an aerobic zone (204), and an inclined tube sedimentation zone (205) spaced sequentially within it. A blower (301) is mounted on one side of the main body (100), and the blower (301) outlet is connected to an aeration main pipe (302). A sludge discharge pipe (402) is installed inside the main body (100). An outlet (102) and an inlet (104) are respectively located at both ends of the main body (100). The prenitrification zone (201) is equipped with a combined biological packing material (206), and a sludge return pipe (401) is installed inside the prenitrification zone (201). The anaerobic zone (202) is equipped with a combined biological packing material (206), and the anaerobic zone (202) is connected to the prenitrification zone (201); Suspended biological packing material (207) is provided in both the anoxic zone (203) and the aerobic zone (204), and the anoxic zone (203) is provided with a first aeration branch pipe (303) that penetrates into it; The inclined tube sedimentation zone (205) is provided with a second aeration branch pipe (304) that is submerged inside it, and the bottom of the inclined tube sedimentation zone (205) is provided with an inclined tube settling element (209).

2. The horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The prenitrification zone (201) is connected to the inlet (104), the inclined tube sedimentation zone (205) is connected to the outlet (102), one end of the inlet (104) is provided with an inlet pipe (105), and one end of the outlet (102) is provided with an outlet pipe (103).

3. The horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The anoxic zone (203) is connected to the aerobic zone (204), and a partition (211) is provided between the anoxic zone (203) and the aerobic zone (204). The anoxic zone (203) and the aerobic zone (204) circulate through the first aeration branch pipe (303).

4. The horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The sludge return pipe (401) is connected to the sludge discharge pipe (402), and one end of the sludge discharge pipe (402) is submerged to the bottom of the inclined tube sedimentation zone (205).

5. The horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The first aeration branch pipe (303) is connected to the aeration main pipe (302), and the second aeration branch pipe (304) is connected to the aeration main pipe (302).

6. A horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The device body (100) is provided with a detachable cover plate (106) on the top, and the top of the cover plate (106) is provided with a communication hole (107) for the first aeration branch pipe (303), the second aeration branch pipe (304) and the sludge return pipe (401).

7. A horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 6, characterized in that: The multiple sets of connecting holes (107) correspond to the prenitrification zone (201), the anoxic zone (203), and the inclined tube sedimentation zone (205), respectively.

8. A horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: Multiple sets of indicator troughs (101) are respectively opened on both sides of the device body (100) for the prenitrification zone (201), the anaerobic zone (202), the anoxic zone (203), the aerobic zone (204) and the inclined tube sedimentation zone (205).

9. A horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: The combined biological packing material (206) is a combination packing material of polypropylene corrugated plate and elastic fiber bundle, and the suspended biological packing material (207) is a porous polyethylene sphere packing material.

10. A horizontal integrated sewage treatment device suitable for cold northern regions as described in claim 1, characterized in that: A filter plate (210) is provided at the top of the inclined tube sedimentation zone (205).

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