A combined device for recycling domestic sewage effluent

Abstract

This utility model provides a combined device for recycling domestic sewage effluent, belonging to the field of sewage treatment technology. The combined device for recycling domestic sewage effluent includes an effluent tank, multiple infiltration treatment units arranged in parallel, and multiple infiltration treatment units connected to the output end of the effluent tank through a first pipe. A water collection unit is connected to the effluent outlet of multiple infiltration treatment units through a second pipe. Each infiltration treatment unit includes a shell, an anaerobic infiltration layer and an anoxic infiltration layer arranged sequentially from bottom to top along the inner cavity of the shell. In this utility model, water is evenly distributed through the inlet pipe at the bottom of the effluent tank and enters multiple infiltration treatment units under hydraulic drive. The effluent flows from bottom to top through each infiltration layer, sequentially completing denitrification, nitrification, and organic matter degradation. The multiple infiltration treatment units are connected in parallel through the first pipe, and the number of modules can be flexibly increased or decreased according to the effluent treatment volume. The effluent from each infiltration treatment unit is collected into the water collection unit through a guide channel to achieve balanced flow distribution.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a combined device for recycling domestic sewage effluent, which is particularly suitable for the deep treatment and resource utilization of urban miscellaneous water. Background Technology

[0002] Currently, the treatment and reuse of domestic sewage effluent mostly employs concrete tanks combined with traditional biological processes. However, traditional solutions have the following significant drawbacks: 1) High cost and long construction period for concrete structures; 2) Sensitive to uneven foundation settlement, easily leading to tank cracking; 3) Requires large equipment for transportation and installation, resulting in poor flexibility; 4) High carbon emissions, failing to meet low-carbon and environmental protection requirements; 5) Packing material is prone to clogging, leading to high maintenance costs. Furthermore, traditional processes struggle to simultaneously achieve efficient denitrification and modular expansion, limiting their application in small- to medium-scale sewage treatment scenarios. Utility Model Content

[0003] This utility model provides a combined device for recycling domestic sewage effluent. Through modular design and innovative fiberglass material, it solves the problems of high cost, easy settling, long construction period and great impact from the rainy season, and difficult maintenance in the existing technology, and realizes efficient purification and resource utilization of effluent.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A combined device for recycling domestic sewage effluent includes:

[0006] Tailwater pool;

[0007] The infiltration treatment unit comprises multiple units arranged in parallel, each unit being connected to the outlet of the tailrace tank via a first pipe; and

[0008] A water collection unit is connected to the outlet of multiple infiltration treatment units via a second pipe.

[0009] Preferably, the percolation treatment unit includes a shell, an anaerobic percolation layer, an anoxic percolation layer, and an aerobic percolation layer arranged sequentially from bottom to top along the inner cavity of the shell.

[0010] Preferably, the top of the aerobic infiltration layer is provided with aquatic plants, including calamus and / or canna lilies.

[0011] Preferably, the anaerobic infiltration layer is filled with 40cm thick ceramsite with a particle size of 10-50mm and 40cm thick volcanic rock with a particle size of 20-40mm.

[0012] Preferably, the anoxic permeation layer is filled with a mixture of zeolite and iron-carbon microspheres in a 1:1 volume ratio.

[0013] Preferably, the aerobic percolation layer is filled with quartz sand with a particle size of 5-10 mm.

[0014] Preferably, the water collection unit is equipped with an ultraviolet disinfection device.

[0015] Preferably, the output end of the tailrace pool is also connected to the water collection unit via a third pipe.

[0016] As can be seen from the above technical solutions, this utility model has the following beneficial effects:

[0017] 1. In this utility model, the tailwater is evenly distributed through the inlet pipe at the bottom of the tailwater tank and enters multiple infiltration treatment units under hydraulic drive. The tailwater flows from bottom to top through each infiltration layer, and completes denitrification, nitrification reaction and organic matter degradation in sequence. The multiple infiltration treatment units are connected by a first parallel pipe, and the number of modules can be flexibly increased or decreased according to the tailwater treatment volume. The effluent from each infiltration treatment unit is collected into the water collection unit through the guide channel to achieve balanced flow distribution.

[0018] 2. In this utility model, both the infiltration treatment unit and the water collection unit can be made of fiberglass. The cost of fiberglass is 40% to 50% lower than that of concrete, which can reduce the amount of steel and cement used and reduce carbon emissions. At the same time, the fiberglass pool can adapt to a certain range of foundation settlement and is easy to maintain, which can avoid the risk of cracking of concrete pool due to uneven foundation settlement and solve the problem of difficult maintenance of traditional concrete pool.

[0019] 3. In this utility model, the tailwater tank, the infiltration treatment unit and the water collection unit are combined into a modular structure, which can be independently hoisted and transported, thus shortening the installation cycle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the water inlet and outlet of this utility model;

[0022] Figure 3 This is a schematic diagram of the percolation treatment unit.

[0023] Figure 4 This is a schematic diagram of the structure of the elastic support foot;

[0024] Figure 5 for Figure 4 A structural diagram from another perspective.

[0025] In the diagram: 10, tailwater tank; 20, infiltration treatment unit; 210, shell; 220, anaerobic infiltration layer; 230, anoxic infiltration layer; 240, aerobic infiltration layer; 250, aquatic plants; 30, first pipe; 40, water collection unit; 50, second pipe; 60, third pipe; 710, plate; 711, support plate; 712, elastic plate; 713, mounting block; 714, sliding column; 715, chute; 720, mounting base; 730, buffer spring. Detailed Implementation

[0026] A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions: (Refer to...) Figure 1 , Figure 2 A combined device for recycling domestic sewage effluent includes an effluent tank 10, a filtration unit 20, and a collection unit 40. Multiple filtration units are arranged in parallel. Each filtration unit is connected to the output end of the effluent tank 10 via a first pipe 30. The collection unit is connected to the outlet ends of the filtration units 20 via a second pipe 50. Both the filtration units and the collection unit are made of fiberglass. The internal components of the filtration unit are arranged sequentially from bottom to top. The system consists of anaerobic, anoxic, and aerobic percolation layers, each filled with porous media of different particle sizes to form a gradient pore structure. During use, the effluent is evenly distributed through the inlet pipe at the bottom of the effluent tank and enters multiple percolation treatment units under hydraulic drive. The effluent flows from bottom to top through each percolation layer, sequentially completing denitrification, nitrification, and organic matter degradation. Multiple percolation treatment units are connected by a first parallel pipe, and the number of modules can be flexibly increased or decreased according to the effluent treatment volume. The effluent from each percolation treatment unit is collected into the water collection unit through a guide channel to achieve balanced flow distribution.

[0028] The tailrace tank, infiltration treatment unit, and water collection unit are combined into a modular structure, which can be independently hoisted and transported, shortening the installation cycle. It can handle a wide range of treatment scales, from 50m³ to... 3 / d to 5000m 3 / d is suitable for various scenarios such as communities and industrial parks.

[0029] It should be noted that, in order to drive the tailwater in the tailwater tank 10 to each infiltration treatment unit 20, a water pump can be installed on the tailwater tank 10, and the pressure of the water pump can be used to transport the tailwater.

[0030] Reference Figure 3As a preferred technical solution in this embodiment, the percolation treatment unit 20 includes a shell 210, an anaerobic percolation layer 220, an anoxic percolation layer 230 and an aerobic percolation layer 240. The shell 210 is made of fiberglass, and the anaerobic percolation layer 220, the anoxic percolation layer 230 and the aerobic percolation layer 240 are arranged sequentially from bottom to top along the inner cavity of the shell 210.

[0031] Furthermore, the top of the aerobic infiltration layer 240 is provided with aquatic plants 250, including calamus and / or canna lilies. By setting up planting areas and planting calamus, canna lilies and other plants that are water-tolerant aquatic plants, their roots penetrate the infiltration layer, enhancing the attachment of microorganisms and the absorption of pollutants.

[0032] Furthermore, the anaerobic permeation layer 220 is 80cm thick and is filled with 40cm thick ceramic granules with a particle size of 10-50mm and 40cm thick volcanic rock with a particle size of 20-40mm. A denitrifying bacterial film is attached to the surface of the anaerobic permeation layer 220, so that denitrification can occur when the effluent flows through the anaerobic permeation layer.

[0033] Furthermore, the anoxic permeation layer 230 is 60 cm thick and is filled with zeolite and iron-carbon microspheres mixed in a 1:1 volume ratio, which can promote nitrate reduction by utilizing the zeolite and iron-carbon microspheres.

[0034] Furthermore, the aerobic permeation layer 240 is 40cm thick and is filled with quartz sand with a particle size of 5-10mm. This part maintains an aerobic environment by supplying oxygen through plant roots.

[0035] Reference Figure 1 , Figure 2 In some embodiments, the water collection unit 40 is also made of fiberglass, and an ultraviolet disinfection device is installed in the water collection unit 40. The ultraviolet disinfection device disinfects the water input into the water collection unit from the infiltration treatment unit. The disinfected effluent is then pumped to the urban miscellaneous pipe network by a variable frequency water pump for use in toilet flushing, vehicle washing, greening, road sweeping, fire fighting, construction, etc.

[0036] In addition, the water collection unit 40 is equipped with a liquid level sensor to monitor the water level in the water collection unit in real time.

[0037] Furthermore, the output end of the tailwater tank 10 is connected to the water collection unit 40 through a third pipe 60, so that the water in the tailwater tank 10 can also directly enter the water collection unit for collection and disinfection.

[0038] Reference Figure 4 , Figure 5In some embodiments, both the infiltration treatment unit 20 and the water collection unit 40 are provided with elastic support feet at their bottoms. Further, the elastic support foot includes a plate 710, with a mounting base 720 vertically fixed to the top of the plate. The top of the mounting base is fixedly connected to the infiltration treatment unit or the water collection unit. Further, the plate 710 includes a bottom support plate 711, an elastic plate 712 extending upwards at an angle from one end of the support plate, and a mounting block 713 fixedly positioned at the top of the elastic plate 712. Meanwhile, the mounting base 720 has a U-shaped structure, with its vertical section rotatably connected to the two sides of the middle of the mounting block via pins. To accommodate ground settlement and prevent the infiltration treatment unit and the water collection unit from breaking, the elastic support foot also includes at least two mounting blocks 713 and mounting bases. In this embodiment, there are two buffer springs 730 between the 720 and the mounting block 713. The two buffer springs 730 are located at the two ends of the mounting block 713. One end of the buffer spring is hinged to the mounting block and the other end is hinged to the mounting base 720. It should be noted that since the mounting block is distributed along the inclined elastic plate, the mounting block is also inclined. Accordingly, the vertical heights of the ends of the two buffer springs away from the mounting block are different. Therefore, in this embodiment, the tops of the two buffer springs are located at different heights of the mounting base. In this way, by utilizing the elastic support effect of the elastic plate 712 and the two buffer springs, combined with the light weight of the fiberglass material, it can adapt to the foundation settlement within a range of ±20cm without causing the infiltration treatment unit and the water collection unit to break.

[0039] Furthermore, each of the two buffer springs 730 has a sliding post 714 at the end away from the mounting block 713, and a groove 715 is provided on the mounting base 720. The two ends of the buffer springs 730 are respectively placed in the groove, and under the gravity of the infiltration treatment unit and the water collection unit, the sliding post 714 can be driven to slide in the groove to achieve the effect of buffering and shock absorption.

[0040] Furthermore, in order to improve the elastic support effect of the elastic plate 712 on the infiltration treatment unit and the water collection unit, the elastic plate 712 can be made of a metal that has both elasticity and hardness. Specifically, the elastic plate 712 in this embodiment can be made of spring steel.

[0041] Furthermore, for the pipe connections between the tailrace tank, the infiltration treatment unit, and the water collection unit in this embodiment, flexible rubber joints are used for the connections between them, which allows for a certain degree of angular offset and avoids stress concentration.

[0042] In addition, the combined device for recycling domestic sewage tailwater in this embodiment can also be installed in a vehicle. Specifically, the infiltration treatment unit can be designed according to the size of the truck. At the same time, in order to facilitate truck transportation, the dimensions of the multi-layer infiltration structure treatment unit, tailwater pool and water collection unit of this device can all be designed to be 13m×2.4m×2m, and the quantity can be determined according to the on-site treatment capacity.

[0043] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A combined device for recycling domestic sewage tail water, characterized in that, include: Tailwater pool (10); A percolation treatment unit (20), wherein multiple percolation treatment units are arranged in parallel, and each of the multiple percolation treatment units is connected to the output end of the tailwater tank (10) through a first pipe (30); and A water collection unit (40) is connected to the outlet of multiple infiltration treatment units (20) via a second pipe (50).

2. The combined device for domestic sewage tail water recycling according to claim 1, characterized in that, The percolation treatment unit (20) includes a shell (210), an anaerobic percolation layer (220), an anoxic percolation layer (230), and an aerobic percolation layer (240) arranged sequentially from bottom to top along the inner cavity of the shell (210).

3. The combined device for domestic sewage tail water recycling according to claim 2, characterized in that, The top of the aerobic permeation layer (240) is provided with aquatic plants (250), including calamus and / or canna lily.

4. The combined device for domestic sewage tail water recycling according to claim 2, characterized in that, The anaerobic permeation layer (220) is filled with 40cm thick ceramic particles with a particle size of 10-50mm and 40cm thick volcanic rock with a particle size of 20-40mm.

5. The combined device for domestic sewage tail water recycling according to claim 4, characterized in that, The anoxic permeation layer (230) is filled with zeolite and iron-carbon microspheres mixed in a 1:1 volume ratio.

6. The combined device for domestic sewage tail water recycling according to claim 5, characterized in that, The aerobic permeation layer (240) is filled with quartz sand with a particle size of 5-10 mm.

7. The combined device for domestic sewage tail water recycling according to claim 1, characterized in that, The water collection unit (40) is equipped with an ultraviolet disinfection device.

8. The combined device for domestic sewage tail water recycling according to claim 1, characterized in that, The output end of the tailwater tank (10) is also connected to the water collection unit (40) through a third pipe (60).

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