Rural single-family domestic sewage decentralized treatment and resource utilization system

Abstract

The utility model relates to a rural single-household domestic sewage decentralized treatment and resource utilization system which comprises a rural single-household domestic sewage discharge point, a sewage distribution well structure, a water distribution pipeline structure and a discharge permeation zone structure, and a service well structure is arranged between the sewage distribution well structure and the rural single-household domestic sewage discharge point. The water distribution pipeline structure comprises a drainage pipeline structure arranged between the service well structure and the sewage distribution well structure and a plurality of groups of permeation pipeline structures arranged in the drainage permeation zone structure, and the sewage distribution well structure comprises a distribution well body and a distribution well cover. The utility model has the beneficial effects that the system structure fully utilizes animal, microorganism and plant root systems inhabiting in soil and physical and chemical characteristics of the soil to purify sewage, and belongs to a sewage land treatment system. The process is suitable for areas where the amount of sewage is small, and after evaporation, crop absorption and infiltration processes, the amount of water flowing out of the low-speed infiltration field is generally zero, that is, the sewage is completely purified and absorbed by the system.

Description

Technical Field

[0001] The utility model relates to the technical field of rural decentralized domestic sewage treatment, in particular to a rural single-household domestic sewage decentralized treatment and resource utilization system. Background Art

[0002] Rural domestic sewage discharge is relatively scattered, the amount of sewage fluctuates greatly, and it is difficult to collect. The sewage collection and treatment facilities in rural areas still need to be improved. At present, rural domestic sewage treatment in some areas does not meet the standards or is even discharged into nearby rivers without treatment, which ultimately leads to increasingly serious rural water environment pollution.

[0003] In actual rural sewage treatment work, there is a lack of suitable large-scale promotion technology. Usually, pipe laying and integrated facilities are used to treat rural domestic sewage. The sewage treatment technology lacks practicality, especially for different rural areas, which results in the sewage treatment technology not matching the local specific conditions. On the one hand, the treatment effect is difficult to achieve the expected effect, and on the other hand, a large amount of financial funds are wasted, which seriously restricts the good development of rural domestic sewage treatment work.

[0004] With the continuous improvement of rural economic levels, rural domestic water consumption has increased significantly. However, due to the relatively dispersed distribution of the rural population, the discharge of domestic sewage is also relatively scattered. In addition, the construction of sewage treatment facilities in rural areas is insufficient, there is a lack of a complete sewage collection network, and the coverage rate of related facilities is uneven. As a result, many domestic sewage treatments do not meet standards or are even discharged into nearby rivers without treatment, ultimately leading to increasingly serious rural water pollution. In actual rural sewage treatment work, there is a lack of large-scale promotion technology that is suitable for it, and the sewage treatment technology used lacks practicality. As a result, the sewage treatment technology in different rural areas does not match the specific local conditions. It is impossible to effectively select sewage treatment technology that is consistent with local water quality characteristics, which will result in sewage treatment results failing to achieve the expected goals, and at the same time will lead to a large amount of waste of funds, which will ultimately seriously restrict the good development of rural domestic sewage treatment work.

[0005] Publication (Announcement) Number: CN215161971U This integrated rural domestic sewage treatment device belongs to the field of decentralized rural domestic sewage treatment technology. Key technical features include a regulating tank with an anaerobic biofilm tank on one side, an anoxic contact oxidation tank and an aerobic contact oxidation tank on the other side, and an overflow ultraviolet disinfector installed on the inner wall of the disinfection tank. This integrated rural domestic sewage treatment device, with a disinfection tank, utilizes a combination of biological and ecological treatment technologies. The biological treatment unit utilizes an anaerobic biofilm + contact oxidation tank, and the ecological treatment unit utilizes an ecological filter. This device features excellent load-bearing capacity, strong stability, low sludge production, excellent treatment results, low cost, and simple operation, making it particularly suitable for sewage treatment in rural areas. The treated sewage can be directly discharged or reused for farmland irrigation. Utility Model Content

[0006] The purpose of this utility model is to solve the technical problem of overcoming the defects of existing rural domestic sewage treatment and providing a rural single-household domestic sewage decentralized treatment and resource utilization system suitable for rural conditions. This technology greatly reduces the investment in rural domestic sewage treatment construction and operation and maintenance costs, and at the same time can maximize the collection and utilization of rural domestic sewage, effectively solving the problems in the background technology.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a decentralized treatment and resource utilization system for rural single-household domestic sewage, including a rural single-household domestic sewage discharge point, a sewage distribution well structure connected to the rural single-household domestic sewage discharge point, a water distribution pipe structure connected to the sewage distribution well structure, and a discharge infiltration belt structure. A household well structure is arranged between the sewage distribution well structure and the rural single-household domestic sewage discharge point. The water distribution pipe structure includes a drainage pipe structure arranged between the household well structure and the sewage distribution well structure and multiple groups of infiltration pipe structures arranged in the discharge infiltration belt structure. The sewage distribution well structure includes a distribution well body and a distribution well cover.

[0008] The discharge infiltration belt structure includes: a plain soil backfill layer, a geotextile layer, and a pebble filling layer. The infiltration pipeline structure is arranged between the pebble filling layers. The infiltration pipeline structure includes a seepage pipe body with seepage holes and multiple groups of exhaust pipeline structures connected to the seepage pipe body. A segmented support sleeve is arranged between the pebble filling layer and the seepage pipe body.

[0009] The infiltration pipeline structure comprises a water seepage pipe body and multiple exhaust pipeline structures connected in the water seepage pipe body. A segmented supporting sleeve is arranged between the upper pebble layer and the lower pebble layer.

[0010] The drainage pipeline structure includes a main sewage pipe arranged between the rural single-household domestic sewage discharge point and the sewage distribution well structure, and an infiltration guide pipe arranged between the sewage distribution well structure and the seepage pipe body. A first elbow is arranged at the outlet end of the main sewage pipe, a plug is arranged at the outer end of the infiltration guide pipe, an inlet pipe body is provided at the interface end of the infiltration guide pipe, and a second elbow is provided at its inlet end.

[0011] The exhaust pipe structure comprises an upper guide pipe connected to the water seepage pipe body and a ventilation cap body arranged on the upper part of the upper guide pipe.

[0012] The beneficial effects of this utility model are as follows: This system structure fully utilizes the physical and chemical properties of soil, including animals, microorganisms, and plant roots, to purify wastewater, representing a land-based wastewater treatment system. This process is suitable for areas with relatively low wastewater inputs. After evaporation, crop absorption, and infiltration, the amount of water flowing out of the slow infiltration field is typically zero, indicating that the wastewater is completely purified and absorbed by the system.

[0013] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 for Figure 1 Top view of .

[0016] Figure 3 for Figure 1 Cross-sectional view of .

[0017] Figure 4 This is a schematic diagram of the structure of the water seepage pipe body in the utility model.

[0018] Figure 5 This is a schematic structural diagram of another embodiment of the water seepage pipe body in the present invention.

[0019] Figure 6 This is a schematic structural diagram of another embodiment of the sewage distribution well structure in the present utility model.

[0020] Figure 7 This is a layout diagram of the utility model.

[0021] In the figure: 1. Rural single-household domestic sewage discharge point, 2. Plain soil backfill layer, 3. Geotextile layer, 4. Pebble filling layer, 5. Segmented support sleeve, 6. Seepage hole, 7. Seepage pipe body, 8. Main sewage pipe, 9. Infiltration guide pipe, 10. Upper guide pipe, 11. Vent cap body, 12. Distribution well body, 13. Distribution well cover, 14. Plug, 15. Household well structure, 16. First elbow, 17. Inlet pipe body, 18. Second elbow, 19. Branch elbow assembly, 20. Partition body, 21. Filter movable frame. DETAILED DESCRIPTION

[0022] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in this application to indicate positions or locations are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Example 1, as Figure 1-7 As shown, the rural household domestic sewage decentralized treatment and resource utilization system includes a rural household domestic sewage discharge point 1, a sewage distribution well structure connected to the rural household domestic sewage discharge point, a water distribution pipeline structure connected to the sewage distribution well structure, and a discharge infiltration zone structure. A household well structure 15 is provided between the sewage distribution well structure and the rural household domestic sewage discharge point. The water distribution pipeline structure includes a drainage pipeline structure provided between the household well structure and the sewage distribution well structure, and multiple groups of infiltration pipeline structures provided in the discharge infiltration zone structure. The sewage distribution well structure includes a distribution well body 12 and a distribution well cover 13.

[0025] The drainage infiltration belt structure includes: a plain soil backfill layer 2, a geotextile layer 3, and a pebble filling layer 4. The infiltration pipeline structure is arranged between the pebble filling layers 4. The infiltration pipeline structure includes a seepage pipe body 7 with seepage holes 6, multiple exhaust pipe structures connected to the seepage pipe body, and a segmented support sleeve 5 is arranged between the pebble filling layer 4 and the seepage pipe body 7.

[0026] The drainage pipe structure includes a main sewage pipe 8 provided between the rural single-household domestic sewage discharge point 1 and the sewage distribution well structure, and a seepage guide pipe 9 provided between the sewage distribution well structure and the seepage pipe body. The outlet end of the main sewage pipe 8 is provided with a first elbow 16.

[0027] A plug 14 is provided at the outer end of the infiltration guide tube 9. An inlet pipe body 17 is provided at the interface end of the infiltration guide tube 9, and a second elbow 18 is provided at its inlet end.

[0028] The exhaust pipe structure includes an upper guide pipe 10 connected to the seepage pipe body and a vent cap 11 provided on the upper portion of the upper guide pipe. In order to ensure smooth drainage of the entire system, a partition body 20 and a filter movable frame 21 provided on the partition body 20 are provided in the distribution well body 12.

[0029] The implementation method of the utility model:

[0030] Sewage distribution well (foundation pit, masonry, pipe laying)

[0031] Step 1: Excavation and Backfilling: First, determine the planar location of the sewage distribution well according to the blueprints, then position and lay out the lines. The net dimensions of the sewage distribution well are 800mm × 800mm × 700mm. When mechanically excavating the foundation pit, a 0.2m thick layer of soil should be retained for manual cleaning. If any foundation soil is disturbed or over-excavated, appropriate foundation treatment is required. Once the foundation pit reaches the designed elevation, an inspection should be conducted in conjunction with relevant departments.

[0032] The backfill of the foundation pit must be implemented after the construction of the flow channel and the inspection well cover is completed and the design strength is reached. The four sides of the foundation pit should be backfilled simultaneously, and the height difference should not be greater than 300mm. Heavy machinery should not be used during backfilling, and the compaction coefficient of the backfill soil should not be lower than 0.94. Foundation pits within the frozen depth range should be backfilled with non-frost heaving materials. When the inspection well is located within the roadbed or square, and the compaction coefficient required by the roadbed is greater than 0.94, the compaction coefficient required by the roadbed shall be implemented; the compaction coefficient of the backfill soil of the inspection well foundation pit located within the green space or farmland can be appropriately reduced, but should not be lower than 0.85. When backfilling the covering soil within 0.5m above the inspection well cover, heavy and vibrating compaction machinery shall not be used for rolling.

[0033] Step 2: Construct the concrete foundation: Before pouring the foundation concrete, compact the undisturbed soil with a compactor to prevent uneven settlement. The compaction coefficient should be no less than 0.85. Then, pour a 5cm C15 concrete cushion layer and a 10cm C25 concrete well foundation. Vibrate and compact the foundation to ensure thorough curing. In extremely cold regions, the frost resistance of concrete above the freezing line should be no less than F200 (D200).

[0034] Step 3: Build the well walls and troughs: Masonry wall materials: sintered bricks with a strength grade of MU15, concrete bricks with a strength grade of MU20, and M10 cement mortar. Brickwork is not recommended for well chambers and shafts in extremely cold regions. If used, insulation measures should be taken to prevent freezing.

[0035] The chute is built simultaneously with the well chamber using the same material.

[0036] The inside and outside of the well wall are plastered with M10 waterproof cement mortar, with a thickness of 20mm; M10 waterproof cement mortar is used for plastering, grouting and mortaring.

[0037] The over-excavated part of the access pipeline is filled with concrete or graded sand and gravel.

[0038] The pipes, walls and base plates should be built with mortar, filled and squeezed tightly.

[0039] Pipe diameters D and D1 ≤ 200 mm, well depth H1 < 1500 mm. The well should be located in a non-motorized vehicle lane; the highest groundwater level should be 0.5 m below the surface.

[0040] Water distribution pipe fabrication: Step 1: Prepare pipes and accessories: The outlet pipe from the distribution well is split into two sections through an equal-diameter tee, which then enters the sewage infiltration system. DN110 UPVC pipe is used, as is the perforated infiltration pipe. Required pipes and accessories include: three 90° elbows, five equal-diameter tees, 8 meters of DN110 UPVC pipe, four vent caps, two flange plugs, and some special UPVC pipe glue.

[0041] Step 2: Make perforated pipe: Make DN110 upvc perforated pipe 6m, the specific steps are as follows:

[0042] The perforated pipe is located in the lower semicircle of the UPVC pipe cross section. Holes are drilled at 60° and 120° clockwise from the horizontal. The diameter of the holes is 10mm, and the spacing between the holes is 300mm along the length of the pipe. For details, see the drawing "Residential Infiltration System Sectional Drawing."

[0043] Sewage slow infiltration system (pipe trench excavation, vent cap and flange plug installation, pipeline layout, backfill requirements, crop requirements, etc.)

[0044] Step 1: Pipe trench excavation: The net dimensions of the trench are 3000mm x 2000mm x 600mm. When mechanical excavation is used, a 0.2m thick soil layer should be retained for manual trench cleaning. If any foundation soil is disturbed or over-excavated, appropriate foundation treatment is required. After the excavation reaches the design elevation, the trench should be inspected in conjunction with relevant departments.

[0045] Step 2: Installation of pipelines and flange plugs: Before installing the pipelines, compact the original soil and lay HDPE anti-seepage membrane. Then fill the soil to a thickness of 300mm, compact it appropriately, and lay 200g / m2 geotextile as a filter layer.

[0046] The pipeline is laid with a slope of 0.005, and the perforated pipes and pipe fittings are connected with UPVC special glue, which makes the construction convenient and quick.

[0047] Install the vent riser, vent cap and flange head simultaneously.

[0048] Step 3: Backfill: Fill pebbles with a particle size of 20-25 within 300mm above and below the center line of the perforated pipe and within 250mm left and right of the center line of the perforated pipe. Backfill the other areas with soil flush with the upper layer of pebbles in the perforated pipe, then lay a layer of 200g / m2 geotextile as a filter layer, and finally backfill with soil to the design elevation.

[0049] The soil permeability coefficient is 0.036~0.36m / d, the ground slope is less than 30%, and the soil layer depth is greater than 0.6m.

[0050] Step 4: Planting of economic plants: Plants that can be selected include reeds, cannas, calamus, and other species with strong purification capabilities, good landscape effects, and low prices. Species with certain crop outputs, such as water celery and wild rice stems, can also be selected. The planting density should be 15 to 25 plants / m2.

[0051] The above embodiments are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

[0052] The parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

Claims

1. Rural single-household domestic sewage decentralized treatment and resource utilization system, characterized by: It includes a rural single-household domestic sewage discharge point, a sewage distribution well structure connected to the rural single-household domestic sewage discharge point, a water distribution pipe structure connected to the sewage distribution well structure, and a discharge infiltration belt structure. A household well structure is arranged between the sewage distribution well structure and the rural single-household domestic sewage discharge point. The water distribution pipe structure includes a drainage pipe structure arranged between the household well structure and the sewage distribution well structure, and multiple groups of infiltration pipe structures arranged in the discharge infiltration belt structure. The sewage distribution well structure includes a distribution well body and a distribution well cover.

2. The rural single-household domestic sewage decentralized treatment and resource utilization system according to claim 1, characterized in that: The discharge infiltration belt structure includes: a plain soil backfill layer, a geotextile layer, and a pebble filling layer. The infiltration pipeline structure is arranged between the pebble filling layers. The infiltration pipeline structure includes a seepage pipe body with seepage holes and multiple groups of exhaust pipeline structures connected to the seepage pipe body. A segmented support sleeve is arranged between the pebble filling layer and the seepage pipe body.

3. The rural single-household domestic sewage decentralized treatment and resource utilization system according to claim 1, characterized in that: The permeation pipeline structure comprises a water seepage pipe body and multiple exhaust pipeline structures connected in the water seepage pipe body.

4. The rural single-household domestic sewage decentralized treatment and resource utilization system according to claim 1, characterized in that; The drainage pipeline structure includes a main sewage pipe arranged between the rural single-household domestic sewage discharge point and the sewage distribution well structure, and an infiltration guide pipe arranged between the sewage distribution well structure and the seepage pipe body. A first elbow is arranged at the outlet end of the main sewage pipe, a plug is arranged at the outer end of the infiltration guide pipe, an inlet pipe body is provided at the interface end of the infiltration guide pipe, and a second elbow is provided at its inlet end.

5. The rural single-household domestic sewage decentralized treatment and resource utilization system according to claim 3, characterized in that: The exhaust pipe structure comprises an upper guide pipe connected to the water seepage pipe body and a ventilation cap body arranged on the upper part of the upper guide pipe.

Images