CN212246655U - Domestic sewage treatment device - Google Patents
Domestic sewage treatment device Download PDFInfo
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- CN212246655U CN212246655U CN202020406273.7U CN202020406273U CN212246655U CN 212246655 U CN212246655 U CN 212246655U CN 202020406273 U CN202020406273 U CN 202020406273U CN 212246655 U CN212246655 U CN 212246655U
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- 238000007254 oxidation reaction Methods 0.000 claims abstract description 48
- 230000003647 oxidation Effects 0.000 claims abstract description 46
- 238000004062 sedimentation Methods 0.000 claims abstract description 38
- 239000000945 filler Substances 0.000 claims abstract description 30
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 238000005273 aeration Methods 0.000 claims abstract description 13
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- 238000005325 percolation Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 238000001764 infiltration Methods 0.000 claims description 17
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
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- 239000004575 stone Substances 0.000 claims description 2
- 230000002950 deficient Effects 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000004576 sand Substances 0.000 description 9
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- 238000001179 sorption measurement Methods 0.000 description 3
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- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
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- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
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- 229920002943 EPDM rubber Polymers 0.000 description 1
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- 206010021143 Hypoxia Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010057249 Phagocytosis Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
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- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a domestic sewage treatment device. The device comprises a biological treatment box and a precipitation filter box which are communicated with each other through a sludge return pipe and a communicating pipe. The biological treatment box comprises an anoxic tank, an oxidation tank I and an oxidation tank II, wherein elastic fillers are arranged in the anoxic tank, combined fillers are arranged in the two oxidation tanks, and a microporous aeration disc is arranged at the bottom of the tanks. The sedimentation filter box comprises a vertical flow sedimentation tank, a percolation tank and a clean water tank, wherein the upper part of the percolation tank is provided with an annular water distribution pipe, and the lower part is provided with three layers of composite filter materials. One end of the sludge return pipe is communicated with the upper part of the vertical flow sedimentation tank, and the other end is communicated with the lower part of the anoxic tank. One end of the communicating pipe is communicated with the confluence groove on the upper part of the oxidation pond II, and the other end is communicated with a central pipe in the vertical flow sedimentation pond. The lower part of the central tube is provided with a reflecting plate for distributing water. Two boxes of the device are separately designed and manufactured, and the device is installed on site, convenient to transport, flexible in arrangement, small in occupied area and energy-saving in operation.
Description
Technical Field
The utility model discloses be applied to the sewage treatment field, relate to a purification unit for domestic sewage, be particularly useful for the sewage treatment of new rural construction and recycle.
Background
In the new rural construction, the country dials special capital because of rural toilet transformation, but the rural area is not better than the city, does not have special sewage treatment facilities, and the domestic sewage discharge generated by flushing the toilet with water inevitably produces environmental pollution, so the sewage treatment device matched with the new rural construction becomes necessary. The treated sewage is required to be discharged or reused after reaching the standard, the sewage treatment is energy-saving and simple to operate, and no special person is needed to be on duty so as to adapt to the requirements of rural conditions.
A sewage treatment system (publication number CN 109867412A) discloses a novel rural sewage treatment process, and the application provides a biological contact oxidation rapid-infiltration sewage treatment device convenient for construction and migration according to a sewage treatment thought similar to the sewage treatment system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: provides a domestic sewage treatment device, which adopts a biological contact oxidation infiltration process to ensure that the treated sewage reaches the standard and is discharged or recycled.
The utility model adopts the technical proposal that: the domestic sewage treatment device comprises a biological treatment box and a precipitation filter box which are independently manufactured, wherein the biological treatment box and the precipitation filter box are communicated with each other through a sludge return pipe and a communicating pipe. The biological treatment box comprises an anoxic pond, an oxidation pond I and an oxidation pond II, wherein water flows through the anoxic pond, the oxidation pond I and the oxidation pond II in sequence, the anoxic pond and the oxidation pond I are communicated on the upper part of the pond, and the oxidation pond I and the oxidation pond II are communicated on the lower part of the pond. The sedimentation filter box comprises a vertical flow sedimentation tank, a percolation tank and a clean water tank, wherein water flows through the vertical flow sedimentation tank, the percolation tank and the clean water tank in sequence; the vertical flow sedimentation tank is communicated with the infiltration tank through a pipeline at the upper part of the tank, and the infiltration tank is communicated with the clean water tank through a water collecting pipe at the lower part of the tank. One end of the sludge return pipe is communicated with the upper part of the vertical flow sedimentation tank, and the other end of the sludge return pipe is communicated with the lower part of the anoxic tank; one end of the communicating pipe is communicated with the confluence groove on the upper part of the oxidation pond II, and the other end of the communicating pipe is communicated with a central pipe in the vertical flow sedimentation pond. The central pipe is vertically supported in the center of the vertical flow sedimentation tank, and a circular umbrella-shaped reflecting plate is designed below the central pipe. And an overflow groove is arranged on the periphery of the inner side wall of the upper part of the vertical flow sedimentation tank.
Furthermore, elastic fillers are supported in the anoxic tank, combined fillers are supported in the oxidation tank I and the oxidation tank II, and microporous aeration discs are uniformly distributed at the bottom of the tank below the combined fillers.
Furthermore, an annular water distribution pipe is supported above the composite filter material at the upper part of the infiltration tank and is communicated with an overflow trough of the vertical flow sedimentation tank through a pipeline. Three layers of composite filter materials are placed at the lower part of the percolation pool, the upper layer is a crushed stone filler with the grain diameter of 16-8mm, the middle and lower layers are composite fillers consisting of silica sand and marble sand, the grain diameter of the middle layer is 4-2mm, and the grain diameter of the lower layer is 0.5-2 mm. The water collecting pipe communicated with the clean water tank is arranged at the bottom of the composite filter material.
The utility model has the advantages that: the two box bodies of the device are separately designed and manufactured, are installed on site, and have the advantages of convenient transportation, simple installation, compact structure, flexible arrangement, small occupied area and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a floor plan of FIG. 1;
FIG. 3 is another floor plan of FIG. 1;
wherein: 1-anoxic tank, 2-oxidation tank I, 3-oxidation tank II, 4-vertical flow sedimentation tank, 5-percolation tank, 6-clean water tank, 7-elastic filler, 8-aeration pipe, 9-microporous aeration disc, 10-combined filler, 11-fan interface, 12-sludge return pipe, 13-sludge pipe, 14-central pipe, 15-reflection plate, 16-communicating pipe, 17-annular water distribution pipe, 18-composite filter material, 19-water collection pipe, 20-overflow weir plate, 21-water outlet, 22-water inlet, 23-manhole, 24-overflow trough and 25-confluence trough.
Detailed Description
Figure 1 is the elevation sketch map of the domestic sewage treatment device, figure 2 is the plane sketch map of the utility model, the following two sketch maps are used for the detailed introduction of the utility model.
The domestic sewage treatment device comprises an anoxic tank 1, a biological contact oxidation tank I2, an oxidation tank II 3, a vertical flow sedimentation tank 4, a percolation tank 5 and a clean water tank 6, wherein sewage flows through the anoxic tank, the biological contact oxidation tank I2 and the oxidation tank II 3 in sequence. Six ponds are the box by stainless steel or steel sheet welding after anticorrosive treatment, on every box roof, the position design that is close to the box curb plate has manhole 23 and people's ladder, is convenient for maintain and inspection. Wherein the anoxic tank 1, the oxidation tank I2 and the oxidation tank II 3 are welded into a whole to form a biological treatment box, and the vertical flow sedimentation tank 4, the percolation tank 5 and the clean water tank 6 are welded into a whole to form a sedimentation filter box. The biological treatment tank and the sedimentation filter tank are communicated with each other through a sludge return pipe 12 and a communicating pipe 16. One end of the sludge return pipe 12 is communicated with the upper part of the vertical flow sedimentation tank 4, and the other end is communicated with the lower part of the anoxic tank 1. One end of the communicating pipe 16 is communicated with the upper confluence groove 25 of the contact oxidation pond II 3, and the other end is communicated with the central pipe 14 in the middle of the vertical flow sedimentation pond 4. The anoxic tank 1 is provided with a water inlet 22 for introducing domestic sewage to be treated into the biological treatment tank, and the clean water tank 6 is provided with two water outlets 21 for discharging the treated clean water.
The domestic sewage is treated by a mechanical grid adjusting tank to remove large particles, homogenized and then sent to the bottom of the anoxic tank 1 through a water inlet 22 by a pump. An elastic filler 7 is arranged in the anoxic tank 1, and the elastic filler 7 is fixed in the anoxic tank 1 by a bracket. In the sewage ascending process of the anoxic tank 1, the elastic filler 7 can intercept fine suspended matters in the sewage and remove a part of organic matters. The nitrifying liquid returned to the bottom of the tank by the sludge return pipe 12 is subjected to denitrification in the sewage rising process, so that the removal rate of ammonia nitrogen in the sewage is improved. And the sewage after the anoxic treatment enters a two-stage biological contact oxidation tank.
The two-stage biological contact oxidation pond is divided into an oxidation pond I2 and an oxidation pond II 3, and the two oxidation ponds have basically the same structure. A combined filler 10 fixed by a bracket is arranged in the oxidation pond, and the combined filler 10 bears microorganism aerobic bacteria. Micropore aeration discs 9 are uniformly distributed at the bottom of the oxidation pond, and the micropore aeration discs 9 are connected with a fan by a fan interface 11 through aeration pipes 8. The sewage that flows in from 1 upper portion in oxygen deficiency pond flows into oxidation pond II 3 by oxidation pond I2 bottom, flows out by oxidation pond II 3 upper portion again, like this, sewage and the abundant contact reaction of the good oxygen fungus of microorganism of combined packing 10, and good oxygen fungus utilizes the organic matter in the sewage to be the foodstuff, decomposes the organic matter in the sewage into inorganic salt for the organic matter in the sewage obtains degradation and purification here. Microporous aeration discs 9 are uniformly distributed at the bottom of the tank, and the transfer rate of the dissolved oxygen in the oxidation tank is increased by an aeration mode. The sewage is treated by the oxidation tank and then flows into the vertical flow sedimentation tank 4 through the communicating pipe 16.
The combined filler 10 is a purchased part, is developed on the basis of soft filler and semi-soft filler, and has the advantages of the soft filler and the semi-soft filler. The structure is that the plastic wafer is changed into a double-ring large plastic ring by pressing and buckling, and the hydroformylation fiber or the polyester yarn is pressed on the ring of the ring, so that the fiber bundles are uniformly distributed; the inner ring is a snowflake-shaped plastic branch, so that the film can be hung, bubbles can be effectively cut, and the transfer rate and the utilization rate of oxygen are improved. The water-gas biomembrane is fully exchanged, and the organic matters in the water are efficiently treated. The combined packing 10 has the advantages of high heat dispersion, small resistance, good water distribution and gas distribution performance and the like. The micropore aeration disc 9 is a purchased part, the top of the micropore aeration disc is designed into a slightly convex arched surface, ABS engineering plastic is used as a main body, the diaphragm is made of special import rubber (EPDM) with an anti-adhesion surface, the diaphragm is mechanically assembled by rib locking, and the diaphragm is prevented from falling off. When air is fed, the micropores on the air distribution film automatically expand and expand to ensure the air to pass through. When the aeration is stopped, the variable micropores on the air distribution membrane are in a closed state, and the phenomenon that the micropores of the aerator are blocked is avoided because the variable micropores of the air distribution membrane automatically expand and contract.
The vertical flow sedimentation tank 4 is a sedimentation tank in which wastewater flows vertically, a vertical central pipe 14 is supported in the center of the vertical flow sedimentation tank 4, a round umbrella-shaped reflecting plate 15 is supported below the central pipe 14, a conical sludge settling hopper is designed at the bottom of the vertical flow sedimentation tank 4, and a sludge pipe 13 leads out of the vertical flow sedimentation tank 4 from the bottom of the sludge settling hopper and is connected with a sludge pump. An overflow groove 24 is arranged on the periphery of the inner side wall of the upper part of the vertical flow sedimentation tank 4, and an overflow weir plate 20 of the overflow groove 24 is in a zigzag shape. Effluent of the oxidation pond II 3 is collected by the confluence groove 25, flows into the central pipe 14 through the communicating pipe 16, enters the vertical flow sedimentation pond 4 from top to bottom in the central pipe 14, and is uniformly distributed in the pond through the reflecting plate 15 and then slowly rises along the periphery. If the suspended matters in the water are such as fallen biological membranes and partial organic and inorganic small particles, the suspended matters are settled and enter a conical sludge settling hopper at the bottom of the tank, and the settled sludge is pumped out by a sludge pump and a sludge pipe 13. The supernatant flows into the overflow groove 24 from the periphery of the tank along the overflow weir plate 20 and then flows into the infiltration tank 5 through the pipeline. Part of the supernatant is returned to the anoxic tank 1 by a sludge return pipe 12.
The upper part of the infiltration tank 5 is supported with an annular water distribution pipe 17, and the lower part is provided with a composite filter material 18. The supernatant flowing into the vertical sedimentation tank 4 is controllably fed into the infiltration tank 5 by the annular water distribution pipe 17, the composite filter material 18 is a natural medium with good infiltration performance and consists of an upper layer, a middle layer and a lower layer, the upper layer is a gravel filler with the particle size of 16-8mm, the middle layer is a composite filler consisting of coarse silica sand and marble sand with the particle size of 4-2mm, and the lower layer is a composite filler consisting of fine silica sand and marble sand with the particle size of 0.5-2 mm. In the middle-lower layer composite filler, the marble sand accounts for about 5% of the coarse sand or the fine sand by weight. The annular water distribution pipe 17 enables the supernatant to be filtered uniformly, and the phenomenon of centralized filtration is avoided. A plurality of rows of water collecting pipes 19 with holes are uniformly distributed at the bottom of the infiltration pond 5, and the water collecting pipes 19 collect and guide the clean water filtered by the infiltration pond 5 into the clean water pond 6. In the process of downward osmosis filtration of the supernatant under the action of gravity, the supernatant is purified due to a series of actions of biological oxidation, nitrification, denitrification, filtration, precipitation, oxidation, reduction and the like. The percolation pool 5 adopts a dry-wet alternative operation mode, and pollutants are degraded by aerobic, anaerobic and facultative microorganisms in the percolation pool. The lower water outlet of the clean water tank 6 is closed, the flowing of the supernatant is in a flooding period, and the infiltration tank 5 is in an anaerobic environment. The water inlet 22 has no water inlet, the lower water outlet of the clean water tank 6 is in a dry period when opened, and the infiltration tank 5 is in an aerobic environment. The constant aerobic environment and the anaerobic environment in the infiltration tank 5 are alternated, which is beneficial to the microorganism to play a comprehensive treatment role and remove organic matters. In the case of nitrogen removal, the falling water produces ammonification and nitrification, the flooding produces denitrification, and nitrogen can be removed by the conversion process described above. The suspended solid is filtered and removed by a filter material, heavy metal is removed by adsorption and precipitation, phosphorus is removed by adsorption and forms calcium hydroxy phosphate precipitation with special filler in a seepage tank, pathogens are removed by filtration, adsorption, drying, radiation and phagocytosis, and organic matters are respectively removed by volatilization, biological and chemical degradation.
Clean water in the clean water tank 6 enters the disinfection well from the water outlet 21, and is disinfected in the disinfection well by pipeline type chlorine dioxide and discharged after reaching the standard.
The biological treatment box and the precipitation filter box can be flexibly arranged according to actual conditions, can be placed on the ground, can also be placed under the ground, and can also be placed semi-underground. The two boxes can be arranged in a straight line in series in the plane, as shown in figure 2, or in a mutually perpendicular way, as shown in figure 3.
Compared with other sewage treatment equipment, the domestic sewage treatment device has the advantages that the two box bodies are separately designed and manufactured and are installed on site, the domestic sewage treatment device has the advantages of convenience in transportation, simplicity in installation, compact structure, flexibility in arrangement, small occupied area and the like, and can be arranged in an overground mode, a semi-underground mode or a fully-buried mode, so that land resources are greatly saved. The device for treating sewage utilizes water pressure to flow, is not suitable for electric energy and has low operation cost. The sludge production amount is small, the primary sediment is prepared by generally operating for half a year, no ozone pollution is caused in the sediment cleaning and transporting process, and the sediment can be used as high-quality planting soil and can be used for improving barren land. The effluent can reach the standard and be discharged, and can also be used for rural irrigation, street watering cleaning, flower and grass maintenance and the like, thereby realizing reutilization. The steel plate is made by adopting Q235A for epoxy corrosion prevention, and the service life is more than 25 years. Therefore, the device is a domestic sewage treatment device suitable for new rural construction in China.
Claims (5)
1. The utility model provides a domestic sewage treatment plant which characterized in that: the device comprises a biological treatment tank and a precipitation filter tank, wherein the biological treatment tank and the precipitation filter tank are communicated with a communicating pipe (16) through a sludge return pipe (12); the biological treatment box comprises an anoxic tank (1), an oxidation tank I (2) and an oxidation tank II (3) through which water flows in sequence, wherein the anoxic tank (1) is communicated with the upper part of the oxidation tank I (2), and the oxidation tank I (2) is communicated with the lower part of the oxidation tank II (3); the sedimentation filter box comprises a vertical flow sedimentation tank (4), a percolation tank (5) and a clean water tank (6), wherein water flows through the vertical flow sedimentation tank, the percolation tank and the clean water tank in sequence; the vertical flow sedimentation tank (4) is communicated with the infiltration tank (5) through an upper pipeline, and the infiltration tank (5) is communicated with the clean water tank (6) through a water collecting pipe (19) at the lower part; one end of the sludge return pipe (12) is communicated with the upper part of the vertical flow sedimentation tank (4), and the other end is communicated with the lower part of the anoxic tank (1); one end of the communicating pipe (16) is communicated with a confluence groove (25) at the upper part of the oxidation pond II (3), and the other end is communicated with a central pipe (14) in the vertical flow sedimentation pond (4); the central pipe (14) is vertically supported in the center of the vertical flow sedimentation tank (4), a umbrella-shaped reflection plate (15) is arranged below the central pipe (14), and overflow grooves (24) are arranged on the periphery of the inner side wall of the upper part of the vertical flow sedimentation tank (4).
2. The domestic sewage treatment apparatus according to claim 1, wherein: the oxygen-deficient pool (1) is internally provided with an elastic filler (7).
3. The domestic sewage treatment apparatus according to claim 1, wherein: and combined fillers (10) are supported in the oxidation pond I (2) and the oxidation pond II (3), and microporous aeration discs (9) are uniformly distributed at the bottom of the pond below the combined fillers (10).
4. The domestic sewage treatment apparatus according to claim 1, wherein: an annular water distribution pipe (17) is supported at the upper part of the infiltration tank (5), and the annular water distribution pipe (17) is communicated with an overflow trough (24) of the vertical flow sedimentation tank (4) through a pipeline; the lower part of the percolation pool (5) is provided with a composite filter material (18), and the bottom of the composite filter material (18) is provided with a water collecting pipe (19).
5. The domestic sewage treatment apparatus according to claim 4, wherein: the composite filter material (18) consists of three layers, wherein the upper layer is a crushed stone filler with the particle size of 16-8mm, the middle layer is a composite filler with the particle size of 4-2mm, and the lower layer is a composite filler with the particle size of 0.5-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406273.7U CN212246655U (en) | 2020-03-26 | 2020-03-26 | Domestic sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020406273.7U CN212246655U (en) | 2020-03-26 | 2020-03-26 | Domestic sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212246655U true CN212246655U (en) | 2020-12-29 |
Family
ID=73986103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020406273.7U Expired - Fee Related CN212246655U (en) | 2020-03-26 | 2020-03-26 | Domestic sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212246655U (en) |
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2020
- 2020-03-26 CN CN202020406273.7U patent/CN212246655U/en not_active Expired - Fee Related
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