CN212504216U - Rural sewage treatment system of a plurality of scattered blowdown facilities of intensive district of personnel - Google Patents
Rural sewage treatment system of a plurality of scattered blowdown facilities of intensive district of personnel Download PDFInfo
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- CN212504216U CN212504216U CN202020839854.XU CN202020839854U CN212504216U CN 212504216 U CN212504216 U CN 212504216U CN 202020839854 U CN202020839854 U CN 202020839854U CN 212504216 U CN212504216 U CN 212504216U
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Abstract
The utility model discloses a rural sewage treatment system of a plurality of dispersion blowdown facilities of personnel intensive district, include three septic tanks (1), equalizing basin (2), anaerobic acidification pond (3), one-level good oxygen pond (4), second grade good oxygen pond (5), sedimentation tank (6) and constructed wetland (7) that connect gradually through the pipeline. The utility model has the advantages that: for sewage with high organic pollution load discharged by a plurality of scattered sewage discharge facilities in a personnel-intensive area, firstly, a three-grid septic tank is adopted to carry out harmless treatment and pretreatment on the excrement sewage, then, anaerobic acidification is adopted to remove partial organic matters, and the biodegradability of the sewage is improved; performing decarburization and dephosphorization by adopting secondary aerobic treatment; and finally, the artificial wetland is adopted to further remove organic pollutants, nitrogen and phosphorus, which is an integrated biological and ecological combination technology.
Description
Technical Field
The utility model relates to a rural environment comprehensive remediation field specifically is a rural sewage treatment system of a plurality of dispersion blowdown facilities of personnel intensive area.
Background
The rural domestic sewage is not only a potential safety hazard of a rural water source, but also aggravates the shortage of fresh water resources, so that the irrigation of cultivated land can not be effectively guaranteed, the survival development of farmers is damaged, the untreated domestic sewage is discharged arbitrarily, the rural living environment is seriously polluted, and the physical health of vast farmers is directly threatened. On one hand, untreated domestic sewage automatically flows into surface water bodies such as rivers, lakes, ponds and the like with low terrain, and various water sources are seriously polluted; on the other hand, domestic sewage is also a source of disease infection spread, and is easy to cause occurrence and prevalence of infectious diseases, endemic diseases and zoonosis in some areas. The domestic sewage treatment plays an important role in the comprehensive treatment of rural environment.
The scattered sewage discharge facilities in the personnel-dense area mainly comprise a country school, a senior citizen home, a kindergarten and the like, which have dense personnel and large domestic sewage generation amount and are generated in the areas of the scattered sewage discharge facilities.
Anaerobic sewage treatment in a personnel dense area mostly adopts a baffling type anaerobic reactor at present. Although the structure is simple, the filter material is not needed to be added, and the wastewater with high suspended solid concentration can be treated. But the application examples in China are few, and when the design is not proper, the sludge loss is easily caused.
Aerobic treatment of sewage in a personnel dense area mostly adopts a biological filter, although natural ventilation and low power consumption are adopted, filter flies are easy to breed, bad sanitary conditions and foul smell are easy to generate when the supply is insufficient, and the aerobic treatment is not mature when used for the nitration reaction of the sewage.
After retrieval: CN201620026907.X discloses a micro-anaerobic rural sewage treatment system, which comprises a micro-anaerobic treatment tank, a primary vertical flow constructed wetland, a secondary vertical flow constructed wetland, a tertiary vertical flow constructed wetland and a water storage tank which are connected in sequence. The micro anaerobic treatment tank is connected with and provided with a water inlet pipe, and the water storage tank is connected with and provided with a water outlet pipe.
CN201620556570.3 discloses a rural sewage treatment plant, including sedimentation digestion tank, anaerobism pond, equalizing basin, biological contact reaction pond, constructed wetland, final sedimentation tank and engine, sedimentation digestion tank inside is provided with the grid, sedimentation digestion tank one side is connected with the anaerobism pond and connects the biological contact reaction pond in anaerobism pond one side, biological contact reaction pond inside is provided with agitating unit, biological contact reaction pond one side is connected with the equalizing basin and sets up the air intlet at the equalizing basin top, the equalizing basin bottom is connected with the final sedimentation tank and sets up the constructed wetland in final sedimentation tank one side, and this rural sewage treatment plant adopts sedimentation digestion tank, anaerobism pond, biological contact reaction pond, equalizing basin, final sedimentation tank and constructed wetland's combination.
Above rural sewage treatment system all has substantive difference with the technical scheme of the utility model, the utility model discloses mainly be to the rural sewage treatment system of a plurality of dispersion blowdown facilities of personnel's intensive district.
Disclosure of Invention
The utility model provides a to the not enough of above-mentioned technique, the utility model provides a rural sewage treatment system of a plurality of dispersion blowdown facilities in personnel's intensive district, collect the concentrated processing of back to the sewage that each sanitary installation discharged, then retrieval and utilization or discharge.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a rural sewage treatment system with a plurality of scattered sewage discharge facilities in a personnel-intensive area comprises a septic tank, an adjusting tank, an anaerobic acidification tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank and an artificial wetland which are sequentially communicated.
In the preferable scheme, the septic tank is a three-grid septic tank, the front end of the three-grid septic tank is provided with a water inlet pipe, and the rear end of the three-grid septic tank is provided with a water outlet pipe. The three-grid septic tank mainly has the function of performing harmless treatment on the excrement and sewage to remove most suspended matters and organic matters.
According to the preferable scheme, the front end tank wall of the adjusting tank is provided with an adjusting tank water inlet pipe, a grid is arranged in the tank, and the top of the rear end tank wall of the adjusting tank is provided with an adjusting tank water outlet pipe. The adjusting tank has the functions of carrying out uniform quality and primary sedimentation treatment on the sewage. The effluent of the regulating reservoir is closed to flow automatically through the effluent of the regulating reservoir and enters an anaerobic acidification pool.
Further preferably, the gap between the grid bars of the grid is 10-20mm, and the inclination angle of the grid is 50-70 degrees.
In the preferable scheme, two compartments with the same structure, namely a first lattice compartment and a second lattice compartment, are arranged in the anaerobic acidification tank, a first lattice compartment water inlet pipe is arranged on the tank wall at the front end of the anaerobic acidification tank, a first lattice compartment filler support plate is arranged in the first lattice compartment, and first lattice compartment fillers are arranged on the first lattice compartment filler support plate; the bottom of the partition wall between the first lattice compartment and the second lattice compartment is provided with a bottom communicating hole, and the bottom of the tank wall at the rear end of the anaerobic acidification tank is provided with a tail end water outlet hole of the second lattice compartment.
In a further preferable scheme, the material of the compartment filler is any one of crushed stone, pebble, zeolite and shale, and the specification is R32-64 mm.
The water flow of the first compartment is in a down-flow type, and the water flow of the second compartment is in an up-flow type. The function of the anaerobic acidification tank is mainly to remove part of organic matters and improve the biodegradability of sewage. The effluent of the anaerobic acidification tank enters the first-stage aerobic tank through a water outlet hole at the tail end of the second grid compartment.
Preferably, one-level good oxygen bottom of the pool portion is provided with the aeration pipe, the bottom of the pool up 100 supplyes oxygen 300mm department and is provided with aeration plate subassembly, fill one-level good oxygen pond filler on the aeration plate subassembly, the terminal cliff top in one-level good oxygen pond sets up the terminal apopore in one-level good oxygen pond, one-level good oxygen pond effluent gets into the good oxygen pond of second grade through the terminal apopore in one-level good oxygen pond, the good oxygen pond inner structure of second grade is the same with the good oxygen pond inner structure of one-level, the terminal cliff top in second grade good oxygen.
The primary aerobic tank mainly has the function of removing organic matters in sewage. The secondary aerobic tank mainly has the function of nitrifying ammonia nitrogen in sewage. The effluent of the second-stage aerobic tank enters a sedimentation tank through a water outlet hole at the tail end of the second-stage aerobic tank.
Preferably, the bottom of the sedimentation tank is provided with a bottom sludge discharge pipe, and the wall of the tail end of the sedimentation tank is provided with a sedimentation tank water outlet pipe. The effluent of the sedimentation tank enters the artificial wetland through a sedimentation tank water outlet pipe and a wetland water distribution pipe connected with the sedimentation tank water outlet pipe. The main function of the sedimentation tank is to separate mud from water.
In the preferable scheme, the front end of the artificial wetland is a wetland water distribution pipe and a wetland water distribution section, the wetland water distribution pipe is connected with a water outlet pipe of a sedimentation tank, a packing layer is arranged behind the wetland water distribution section, a live soil layer is arranged on the packing layer, wetland plants are arranged on the live soil layer, and a wetland water outlet pipe is arranged at the rear end of the packing layer.
In a further preferable scheme, the filler layer is any one of R16-32mm cinder, broken bricks, grass carbon, zeolite, shale light polymer materials and gravel.
In a further preferable scheme, the wetland plant is any one of canna, ophiopogon japonicus, cattail and bamboo reeds.
A three-grid septic tank and an adjusting tank of a rural sewage treatment system with a plurality of dispersed sewage discharge facilities in a personnel-intensive area are of reinforced concrete structures; the four tank bodies such as the anaerobic acidification tank, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the like can be made of reinforced concrete structures or steel plates, glass fiber reinforced plastics and factories; the constructed wetland adopts a brick-concrete structure.
The utility model has the advantages that: for facilities with a plurality of sewage outlets in a personnel-intensive area, sewage with high organic pollution load is firstly treated in a harmless way by a three-grid septic tank, then part of organic matters are removed by anaerobic acidification, the biodegradability of the sewage is improved, nitrogen and phosphorus removal is carried out by secondary aerobic treatment, and finally, organic matters and nitrogen and phosphorus are further removed by an artificial wetland, so that the integrated biological and ecological combination technology is provided.
Drawings
FIG. 1 is a plan view of a rural sewage treatment system with a plurality of decentralized sewage disposal facilities in a personnel-intensive area;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
in the figure: 1-a three-grid septic tank, 1-1-a water inlet pipe and 1-2-a water outlet pipe; 2-regulating reservoir, 2-1-regulating reservoir water inlet pipe, 2-2-grid, 2-3-regulating reservoir water outlet pipe; 3-anaerobic acidification pool, 3 a-first grid compartment, 3 a-1-first grid compartment, 3 a-2-first grid compartment filler bearing plate, 3 a-3-first grid compartment filler, 3 a-4-bottom communicating hole, 3 b-second grid compartment, and 3b-1 second grid compartment end water outlet hole; 4-first-stage aerobic tank, 4-1-aerator pipe, 4-2-aerator plate component, 4-3-first-stage aerobic tank filler and 4-4-first-stage aerobic tank tail end drain hole; 5-secondary aerobic tank, 5-1-secondary aerobic tank end water outlet; 6-sedimentation tank, 6-1-sedimentation tank outlet pipe; 7-artificial wetland, 7-1-wetland water distribution pipes, 7-2-wetland ground water distribution sections, 7-3-packing layers, 7-4-live soil layers, 7-5-hygrophytes and 7-6-wetland water outlet pipes; 8-small aerator and 8-1-gas pipe.
Detailed Description
Example 1
In order to better understand the utility model, the following provides a detailed description of the utility model with reference to the examples.
As shown in figure 1 and figure 2, the utility model discloses a rural sewage treatment system of a plurality of scattered blowdown facilities of personnel's intensive district, include three septic tanks 1, equalizing basin 2, anaerobic acidification tank 3, one-level good oxygen pond 4, second grade good oxygen pond 5, sedimentation tank 6 and constructed wetland 7 that connect gradually through the pipeline.
The three septic tanks 1 can also be divided into a plurality of septic tanks for construction according to the actual condition of distribution of each sewage discharge facility, and the three septic tanks are selected according to the national building standard design drawing set 08SS704 concrete module type septic tanks and 14SS706 glass fiber reinforced plastic septic tank selection and burying. The three-grid septic tank 1 mainly has the function of performing harmless treatment on the excrement sewage to remove most suspended matters and organic matters. The three-grid septic tank 1 receives sewage of a plurality of dispersed sewage discharge facilities from a water inlet pipe 1-1, enters the tank, and automatically flows from a regulating tank water inlet pipe 2-1 through a water outlet pipe 1-2 to enter a regulating tank 2.
The front end tank wall of the adjusting tank 2 is provided with an adjusting tank water inlet pipe 2-1, and the adjusting tank water inlet pipe 2-1 is connected with a water outlet pipe 1-2 of the three-grid septic tank. The front 1/3 position in the pool is provided with a grid 2-2 for removing larger suspended matters, the gap between grid bars is 10mm, and the inclination angle of the grid is 60 degrees for manual slag removal. The water level of the tank wall at the rear end of the adjusting tank is designed to be provided with an adjusting tank water outlet pipe 2-3. The adjusting tank 2 mainly has the functions of carrying out uniform, homogeneous and primary sedimentation treatment on the sewage. The effluent of the regulating reservoir 2 automatically flows into an anaerobic acidification tank 3 through an effluent pipe 2-3 of the regulating reservoir.
The anaerobic acidification tank 3 is provided with 2 compartments, namely a first lattice compartment 3a and a second lattice compartment 3b, a first lattice compartment water inlet pipe 3a-1 is arranged on the tank wall at the front end of the anaerobic acidification tank 3, a first lattice compartment filler support plate 3a-2 is arranged at the position 200mm above the bottom of the first lattice compartment 3a, the filler support plate is a steel plate, the thickness of the filler support plate is 8mm, round holes with the diameter of 20mm are drilled in the steel plate, the hole spacing is 100mm, the first lattice compartment filler 3a-3 is stacked on the support plate, the filler is Fischer zeolite, and the specification size is R32-64 mm. The filler supporting plate and the filler arranged in the second grid compartment 3b are the same as the first grid compartment filler plate supporting plate 3a-2 and the first grid compartment filler 3a-3 arranged in the first grid compartment 3 a. The bottom of the partition wall between the first compartment 3a and the second compartment 3b is provided with a bottom communicating hole 3 a-4. The water flow in the first compartment 3a is down-flow, and the water flow in the second compartment 3b is up-flow. A water outlet hole 3b-1 at the tail end of the second grid compartment is arranged below the tank wall at the rear end of the anaerobic acidification tank and at the position of 100mm of the designed water level. The anaerobic acidification tank 3 mainly has the functions of removing partial organic matters and improving the biodegradability of sewage. The effluent of the anaerobic acidification tank 3 enters a first-stage aerobic tank 4 through a water outlet hole 3b-1 at the tail end of the second grid compartment.
The bottom of the primary aerobic tank 4 is provided with an aeration pipe 4-1, and the aeration pipe is connected with a gas pipe 8-1 and a small aerator 8. The aeration plate component 4-2 is arranged at the position where the bottom of the tank is upwards swung by 200mm, the aeration plate is made of steel and is 8mm thick, round holes with the diameter of 25mm are drilled on the aeration plate, and a micro aerator is installed. The distance between the micro aerators is 100mm, the aeration plate component 4-2 is filled with a first-level aerobic tank filler 4-3, the first-level aerobic tank filler is R32-64mm steel slag, and the filler rate is 75%. A water outlet hole 4-4 at the tail end of the primary aerobic tank is arranged at the position of the tank wall at the tail end of the primary aerobic tank, wherein the water level is 150 mm. The primary aerobic tank 4 mainly has the function of removing organic matters in the sewage. The effluent of the primary aerobic tank 4 enters a secondary aerobic tank 5 through a water outlet 4-4 at the tail end of the primary aerobic tank.
The aeration pipe, the aeration plate component and the filler arranged at the bottom of the second-stage aerobic tank 5 are the same as the aeration plate 4-1 and the aeration plate component 4-2 arranged in the first-stage aerobic tank 4 and the filler 4-3 arranged in the first-stage aerobic tank 4, and a water outlet 5-1 at the tail end of the second-stage aerobic tank is arranged below the tank wall at the tail end of the second-stage aerobic tank at the designed water level of 200 mm. The secondary aerobic tank 5 mainly has the function of nitrifying ammonia nitrogen in sewage. The crystal discharged from the secondary aerobic tank 5 enters a sedimentation tank 6 through a water outlet 5-1 at the tail end of the secondary aerobic tank.
The bottom of the sedimentation tank 6 is provided with a bottom sludge discharge pipe, and the tank wall at the tail end is provided with a sedimentation tank water outlet pipe 6-1. The sedimentation tank mainly has the functions of separating mud and water and preventing the constructed wetland from being blocked. The crystal from the sedimentation tank 6 enters the artificial wetland 7 through the sedimentation tank water outlet pipe 6-1 and the wetland water distribution section 7-1 connected with the sedimentation tank water outlet pipe.
The front end of the artificial wetland 7 is provided with a wetland water distribution pipe 7-1 and a wetland water distribution section 7-2. The wet water distribution pipe 7-1 is connected with the water outlet pipe 6-1 of the sedimentation tank, the wet land water distribution section 7-2 is gravel with the diameter of R32-64mm, the packing layer 7-3 is arranged behind the wet land water distribution section 7-2, the packing layer 7-3 is broken bricks with the diameter of R16-32mm, the live soil layer 7-4 is arranged above the packing layer 7-3, and the live soil layer is local loam. And (3) planting 7-5 hygrophytes on the live soil layer 7-4, wherein the hygrophytes 7-5 are any one of canna indica, ophiopogon japonicus, cattail and bamboo reeds, and the planting density of the plants is 5 plants per square meter. The effluent treated by the artificial wetland 7 is discharged through a wetland water outlet pipe 7-6, the discharged water quality reaches the standard of farmland irrigation water quality (GB 5084-92), and the water can be used for watering, flushing roads and landscape water of public facilities such as schools, old homes, kindergartens and the like, and can also be reused for farmland irrigation.
A three-grid septic tank and an adjusting tank of a rural sewage treatment system with a plurality of dispersed sewage discharge facilities in a personnel-intensive area are of reinforced concrete structures; the four tank bodies such as the anaerobic acidification tank, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the like can be of reinforced concrete structures and can also be manufactured by steel plate and glass fiber reinforced plastic factories; the constructed wetland adopts a brick-concrete structure.
The main design parameters of each part of the system are as follows:
1HRT =72h of the three-grid septic tank, and the sludge cleaning period is 180 d; regulating reservoir 2HRT =12 h; 3HRT =12h in the anaerobic acidification tank, and the volume load is 1.05 kgBOD/(cm. d); 4HRT =6h in the primary aerobic tank, and the volume load is 1.04 kgCOD/(cm. d); the secondary aerobic tank is 5HRT =6h, the volume load is 0.65kg ammonia nitrogen/(cm & d), and the total gas-water ratio is 32: 1; 6HRT =4h in the sedimentation tank; the surface load of the artificial wetland 7 is 0.1m/d, and HRT =5 d.
The above description is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its concept within the technical scope of the present invention.
Claims (10)
1. A rural sewage treatment system with a plurality of scattered sewage discharge facilities in a personnel-intensive area comprises a septic tank and is characterized by comprising the septic tank, an adjusting tank (2), an anaerobic acidification tank (3), a primary aerobic tank (4), a secondary aerobic tank (5), a sedimentation tank (6) and an artificial wetland (7) which are sequentially communicated.
2. The rural sewage treatment system according to claim 1, wherein the septic tank is a three-grid septic tank (1), a water inlet pipe (1-1) is arranged at the front end of the three-grid septic tank (1), and a water outlet pipe (1-2) is arranged at the rear end of the three-grid septic tank (1).
3. The rural sewage treatment system according to claim 1, wherein the tank wall at the front end of the regulating tank (2) is provided with a regulating tank water inlet pipe (2-1), a grid (2-2) is arranged in the tank, and the top of the tank wall at the rear end of the regulating tank is provided with a regulating tank water outlet pipe (2-3).
4. The rural sewage treatment system according to claim 3, wherein the gaps between the grid bars of the grids (2-2) are 10-20mm, and the inclination angles of the grids are 50-70 degrees.
5. The rural sewage treatment system according to claim 3, wherein two compartments with the same structure are arranged in the anaerobic acidification tank (3), namely a first compartment (3 a) and a second compartment (3 b), a first compartment water inlet pipe (3 a-1) is arranged on the tank wall at the front end of the anaerobic acidification tank (3), a first compartment filler support plate (3 a-2) is arranged in the first compartment (3 a), and first compartment fillers (3 a-3) are arranged on the first compartment filler support plate (3 a-2); the bottom of the partition wall between the first lattice compartment (3 a) and the second lattice compartment (3 b) is provided with a bottom communicating hole (3 a-4), and the bottom of the tank wall at the rear end of the anaerobic acidification tank is provided with a water outlet hole (3 b-1) at the tail end of the second lattice compartment.
6. The rural sewage treatment system according to claim 1, wherein the bottom of the primary aerobic tank (4) is provided with an aeration pipe (4-1), the bottom of the tank is provided with an aeration plate assembly (4-2) at a position of 100mm above the tank bottom, the aeration plate assembly (4-2) is filled with primary aerobic tank filler (4-3), the top of the tank wall at the tail end of the primary aerobic tank is provided with a water outlet hole (4-4) at the tail end of the primary aerobic tank, the water outlet of the primary aerobic tank (4) enters the secondary aerobic tank (5) through the water outlet hole (4-4) at the tail end of the primary aerobic tank, the internal structure of the secondary aerobic tank (5) is the same as that of the primary aerobic tank (4), and the top of the tank wall at the tail end of the secondary aerobic.
7. The rural sewage treatment system according to claim 1, wherein a bottom sludge discharge pipe is arranged at the bottom of the sedimentation tank (6), and a sedimentation tank water outlet pipe (6-1) is arranged on the tank wall at the tail end of the sedimentation tank.
8. The rural sewage treatment system according to claim 1, wherein the front end of the artificial wetland (7) is provided with a wetland water distribution pipe (7-1) and a wet ground water distribution section (7-2), the wetland water distribution pipe (7-1) is connected with a sedimentation tank water outlet pipe (6-1), a packing layer (7-3) is arranged behind the wet ground water distribution section (7-2), a live soil layer (7-4) is arranged on the packing layer (7-3), wetland plants (7-5) are arranged on the live soil layer (7-4), and a wetland water outlet pipe (7-6) is arranged at the rear end of the packing layer (7-3).
9. The rural sewage treatment system of claim 8, wherein the packing layer (7-3) is any one of R16-32mm cinder, broken bricks, grass peat, zeolite, shale light polymer material and gravel.
10. The rural sewage treatment system of claim 8 wherein the wetland plants (7-5) are any one of canna, ophiopogon, cattail and bamboo reeds.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112876003A (en) * | 2021-04-01 | 2021-06-01 | 生态环境部华南环境科学研究所 | Device for treating rural sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876003A (en) * | 2021-04-01 | 2021-06-01 | 生态环境部华南环境科学研究所 | Device for treating rural sewage |
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