Resource utilization system for rural domestic sewage

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a resource utilization system for rural domestic sewage. Comprising a household cleaning well, a reinforced pretreatment pool and a soil percolation purification tank, a water inlet pipe is arranged on one side of the household cleaning well, a first water outlet pipe is arranged on the other side of the household cleaning well, the tail end of the first water outlet pipe is connected with the reinforced pretreatment pool, and a second water outlet pipe is arranged on the other side of the reinforced pretreatment pool and connected with the soil percolation purification tank; through cooperative use of the outdoor cleaning well, the reinforced pretreatment pool and the soil percolation purification tank, rural domestic sewage can be well treated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, in particular to a resource utilization system for rural domestic sewage. Background Art

[0002] With the continuous improvement of rural living standards and the rapid development of livestock and poultry farming, rural water consumption and sewage generation are on the rise. At present, most rural domestic sewage sources are scattered and the supporting treatment equipment is backward. Most of it is directly discharged into rivers and lakes without any treatment, causing rivers to become black and smelly and lakes to become eutrophic. A small part of it is simply treated in septic tanks and then seeps into the ground, seriously threatening the safety of drinking water quality in rural areas, and thus endangering the ecological environment and human health.

[0003] In a patent application with publication number CN 205773927 U, a decentralized rural domestic sewage treatment system is disclosed, which includes a grille well with a grille arranged inside; an anaerobic tank is arranged at the right end of the grille well, a flocculation tank is arranged at the right end of the anaerobic tank, a sedimentation tank is arranged at the right end of the flocculation tank, a transition tank is arranged at the right end of the sedimentation tank, a pebble layer is arranged at the right lower end of the transition tank, a sand layer is arranged on the pebble layer, a bulk straw layer is arranged at the upper end of the sand layer, a silt layer is arranged at the upper end of the bulk straw layer, and plants are planted on the silt layer; a purification tank is arranged at the right end of the pebble layer, the purification tank and the pebble layer are connected by a connecting pipe, and a drainage pipe is arranged on the purification tank. The purpose of the utility model is to provide a decentralized rural domestic sewage treatment system with a simple structure, a short construction period, and a low cost. It can effectively solve the problem of decentralized water pollution in rural areas, and at the same time can decompose pollutants and convert them into planting fertilizers, saving resources, and has good application value and promotion prospects. However, in the prior art, the sewage is not pretreated, and the treatment effect is poor.

[0004] Therefore, this application proposes a system for resource utilization of rural domestic sewage. Utility Model Content

[0005] The purpose of the utility model is to provide a system for resource utilization of rural domestic sewage, which can better treat rural domestic sewage through the coordinated use of outdoor cleaning wells, enhanced pretreatment pools and soil infiltration purification tanks.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A system for resource utilization of rural domestic sewage includes a household cleaning well, an enhanced pretreatment pool and a soil infiltration purification tank. A water inlet pipe is arranged on one side of the household cleaning well, and a first water outlet pipe is arranged on the other side. The end of the first water outlet pipe is connected to the enhanced pretreatment pool. A second water outlet pipe is arranged on the other side of the enhanced pretreatment pool, and the second water outlet pipe is connected to the soil infiltration purification tank.

[0008] Furthermore, the enhanced pretreatment tank is a three-grid structure, which includes treatment tank No. 1, treatment tank No. 2 and treatment tank No. 3. Treatment tank No. 1, treatment tank No. 2 and treatment tank No. 3 are respectively provided with a first guide pipe, a second guide pipe and a third guide pipe, and treatment tank No. 2 and treatment tank No. 3 are provided with fillers.

[0009] Furthermore, the bottoms of the second flow guiding tube and the third flow guiding tube are deeply inserted into the filler, and the distance between the second flow guiding tube and the third flow guiding tube and the bottom surface is smaller than the distance between the first flow guiding tube and the bottom surface.

[0010] Furthermore, the distance from the filler to the bottom surface in the No. 2 treatment tank and the No. 3 treatment tank is 300 mm.

[0011] Furthermore, water intakes are provided on the top plates of the No. 1 treatment pool, the No. 2 treatment pool and the No. 3 treatment pool, and prefabricated cover plates are provided at the water intakes.

[0012] Furthermore, a geotextile layer, a dog-head stone layer, a first centimeter stone layer, an environmentally friendly expanded clay layer, a second centimeter stone layer, and a geomembrane layer are arranged in sequence from bottom to top in the soil infiltration purification tank. A prefabricated cover plate is arranged on the top of the geomembrane layer, and an original soil backfill layer is arranged on the prefabricated cover plate, and crops are planted on the original soil backfill layer.

[0013] Furthermore, the total thickness of the geotextile layer, the dog-head stone layer, the first centimeter stone layer, the environmentally friendly expanded clay layer, the second centimeter stone layer, the geomembrane layer, the cover plate and the original soil backfill layer is 1000mm.

[0014] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0015] The utility model can better treat rural domestic sewage through the coordinated use of household cleaning wells, enhanced pretreatment pools and soil infiltration purification tanks, reducing its pollution to the environment, including water eutrophication, soil pollution and other problems. At the same time, the treated water can be reused, such as for farmland irrigation, landscape water, etc.

[0016] The enhanced pretreatment tank is a three-grid structure, which includes treatment tank No. 1, treatment tank No. 2 and treatment tank No. 3. Treatment tank No. 1, treatment tank No. 2 and treatment tank No. 3 are respectively provided with the first diversion pipe, the second diversion pipe and the third diversion pipe, and treatment tank No. 2 and treatment tank No. 3 are provided with fillers. Pre-treating the sewage first can effectively remove harmful substances in the sewage, protect soil and water sources, and maintain ecological balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a top view of the utility model.

[0019] In the figure, 1-household cleaning well; 2-enhanced pretreatment pool; 3-soil infiltration purification tank; 4-water inlet pipe; 5-first water outlet pipe; 6-second water outlet pipe; 7-No. 1 treatment pool; 8-No. 2 treatment pool; 9-No. 3 treatment pool; 10-first diversion pipe; 11-second diversion pipe; 12-third diversion pipe; 13-geotextile layer; 14-dog head stone layer; 15-first centimeter stone layer; 16-environmentally friendly expanded clay layer; 17-second centimeter stone layer; 18-geomembrane layer. DETAILED DESCRIPTION

[0020] like Figure 1-2 In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0021] A system for resource utilization of rural domestic sewage, comprising a household cleaning well 1, an enhanced pretreatment pool 2 and a soil infiltration purification tank 3. The household cleaning well 1 is an indoor facility, generally arranged between the kitchen water outlet and the household inspection well, close to the kitchen, and mainly used for separating oil and residue from the kitchen water of ordinary farmers; the enhanced pretreatment pool 2 is a primary sewage treatment facility that utilizes the principles of sedimentation and anaerobic microbial fermentation to remove suspended matter, organic matter and pathogenic microorganisms in fecal sewage or other domestic sewage; the soil infiltration purification tank 3 is an artificial sewage ecological engineering treatment technology, which makes full use of soil animals and soil microorganisms living in the soil below the surface. The physical and chemical properties of organisms, plant roots and soil purify the sewage. A water inlet pipe 4 is arranged on one side of the household cleaning well 1, and a first water outlet pipe 5 is arranged on the other side. The end of the first water outlet pipe 5 is connected to the enhanced pretreatment tank 2. A second water outlet pipe 6 is arranged on the other side of the enhanced pretreatment tank 2, and the second water outlet pipe 6 is connected to the soil infiltration purification tank 3. The utility model can better treat rural domestic sewage and reduce its pollution to the environment, including eutrophication of water bodies, soil pollution and other problems, through the coordinated use of household cleaning wells, enhanced pretreatment tanks and soil infiltration purification tanks. At the same time, the treated water can be reused, such as for farmland irrigation, landscape water use, etc.

[0022] More specifically, the enhanced pretreatment tank 2 is a three-grid structure, which includes a No. 1 treatment tank 7, a No. 2 treatment tank 8 and a No. 3 treatment tank 9. The No. 1 treatment tank 7, the No. 2 treatment tank 8 and the No. 3 treatment tank 9 are respectively provided with a first guide pipe 10, a second guide pipe 11 and a third guide pipe 12, and the No. 2 treatment tank 8 and the No. 3 treatment tank 9 are provided with fillers. Pre-treating the sewage first can effectively remove harmful substances in the sewage, protect soil and water sources, and maintain ecological balance.

[0023] More specifically, the bottoms of the second flow conduit 11 and the third flow conduit 12 penetrate deep into the filler, and the distance between the second flow conduit 11 and the third flow conduit 12 and the bottom surface is smaller than the distance between the first flow conduit 10 and the bottom surface, making it more convenient for sewage to flow through treatment tank No. 1 7, treatment tank No. 2 8 and treatment tank No. 3 9 in sequence.

[0024] More specifically, the distance from the filler in the No. 2 treatment tank 8 and the No. 3 treatment tank 9 to the bottom surface is 300 mm.

[0025] More specifically, water intakes are provided on the top plates of the No. 1 treatment pool 7, the No. 2 treatment pool 8 and the No. 3 treatment pool 9, and prefabricated cover plates are provided at the water intakes to facilitate water intake.

[0026] More specifically, a geotextile layer 13, a dog-head stone layer 14, a first centimeter stone layer 15, an environmentally friendly expanded clay layer 16, a second centimeter stone layer 17, and a geomembrane layer 18 are arranged in sequence from bottom to top in the soil infiltration purification tank 3. A prefabricated cover plate is arranged on the top of the geomembrane layer 18, and an original soil backfill layer is arranged on the prefabricated cover plate, and crops are planted on the original soil backfill layer.

[0027] More specifically, the total thickness of the geotextile layer 13, the dog-head stone layer 14, the first centimeter stone layer 15, the environmentally friendly expanded clay layer 16, the second centimeter stone layer 17, the geomembrane layer 18, the cover plate and the original soil backfill layer is 1000 mm.

[0028] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A system for resource utilization of rural domestic sewage, characterized by: The invention comprises a household cleaning well (1), an enhanced pretreatment pool (2) and a soil infiltration purification tank (3); a water inlet pipe (4) is arranged on one side of the household cleaning well (1), and a first water outlet pipe (5) is arranged on the other side; the end of the first water outlet pipe (5) is connected to the enhanced pretreatment pool (2); a second water outlet pipe (6) is arranged on the other side of the enhanced pretreatment pool (2); the second water outlet pipe (6) is connected to the soil infiltration purification tank (3); the enhanced pretreatment pool (2) is a three-grid structure, and the three-grid structure comprises a first treatment pool (7), a second treatment pool (8) and a third treatment pool (9); the first treatment pool (7), the second treatment pool (8) and the third treatment pool (9) are respectively provided with a first guide pipe (10), a second guide pipe (11) and a third guide pipe (12); and the second treatment pool (8) and the third treatment pool (9) are provided with fillers.

2. A system for resource utilization of rural domestic sewage according to claim 1, characterized in that: The bottoms of the second flow guide tube (11) and the third flow guide tube (12) are deeply embedded in the filler, and the distance between the second flow guide tube (11) and the third flow guide tube (12) and the bottom surface is smaller than the distance between the first flow guide tube (10) and the bottom surface.

3. The system for resource utilization of rural domestic sewage according to claim 1 is characterized in that: The distance from the filler to the bottom surface in the No. 2 treatment tank (8) and the No. 3 treatment tank (9) is 300 mm.

4. The system for resource utilization of rural domestic sewage according to claim 1 is characterized in that: Water intakes are provided on the top plates of the first treatment pool (7), the second treatment pool (8) and the third treatment pool (9), and prefabricated cover plates are provided at the water intakes.

5. The system for resource utilization of rural domestic sewage according to claim 1 is characterized in that: A geotextile layer (13), a dog-head stone layer (14), a first centimeter stone layer (15), an environmentally friendly ceramsite layer (16), a second centimeter stone layer (17), and a geomembrane layer (18) are sequentially arranged in the soil infiltration purification tank (3) from bottom to top. A prefabricated cover plate is arranged on the top of the geomembrane layer (18), and an original soil backfill layer is arranged on the prefabricated cover plate. Crops are planted on the original soil backfill layer.

6. A system for resource utilization of rural domestic sewage according to claim 5, characterized in that: The total thickness of the geotextile layer (13), the dog-head stone layer (14), the first centimeter stone layer (15), the environmentally friendly ceramsite layer (16), the second centimeter stone layer (17), the geomembrane layer (18), the cover plate and the original soil backfill layer is 1000 mm.

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