CN220223904U - Domestic sewage treatment system - Google Patents
Domestic sewage treatment system Download PDFInfo
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- CN220223904U CN220223904U CN202321679355.9U CN202321679355U CN220223904U CN 220223904 U CN220223904 U CN 220223904U CN 202321679355 U CN202321679355 U CN 202321679355U CN 220223904 U CN220223904 U CN 220223904U
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- sewage
- septic tank
- tank
- ecological wetland
- layer
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- 239000010865 sewage Substances 0.000 title claims abstract description 126
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000005273 aeration Methods 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 8
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 238000001914 filtration Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000169203 Eichhornia Species 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Treatment Of Biological Wastes In General (AREA)
Abstract
The utility model discloses a domestic sewage treatment system, which comprises a sewage pretreatment tank, a three-stage septic tank and an ecological wetland system, wherein a basket type grille for intercepting suspended matters is arranged in the sewage pretreatment tank; the three-stage septic tank is used for removing suspended matters and organic matters in the sewage; the ecological wetland system comprises an ecological wetland pool, wherein a planting soil layer and a filter layer are sequentially arranged in the ecological wetland pool from top to bottom, and aquatic plants are planted in the planting soil layer. When the sewage treatment device is used, large-area suspended matters in sewage entering the three-stage septic tank are intercepted by the basket type grille, so that a large amount of suspended matters in the sewage directly discharged into the three-stage septic tank are avoided; in addition, the three-stage septic tank is combined with the ecological wetland system, and the sewage treated by the three-stage septic tank is purified by the ecological wetland system, namely, the sewage entering the ecological wetland tank from the three-stage septic tank is filtered by the filter layer and is absorbed and purified by the root system of the aquatic plant and then discharged, so that the water quality of the effluent is improved, and the water quality of the effluent is ensured to reach the standard stably.
Description
Technical Field
The utility model relates to the technical field of rural sewage treatment, in particular to a domestic sewage treatment system.
Background
With the continuous improvement of living standard of people in rural areas, urban facilities such as buildings, water closets and the like are widely applied in the rural areas, untreated domestic sewage is discharged to cause the water quality of ditches and ponds in the rural areas to become black and odorous, mosquitoes are bred, the living environment of the rural areas is affected, and the health of farmers is threatened; in addition, the eutrophication phenomenon of reservoirs, lakes and other places is also prominent in rural sewage caused by drinking water source pollution. The septic tank sewage is domestic sewage generated by flushing excrement in daily life, and the direct discharge of the septic tank sewage can cause adverse effect on the environment because the septic tank sewage contains a large amount of bacteria and organic matters.
At present, the domestic sewage of rural scattered resident residents is generally treated by adopting a three-stage septic tank, and suspended matters, organic matters and the like in fecal sewage or other domestic sewage are removed by utilizing the sedimentation and anaerobic microorganism fermentation principles. However, the existing three-stage septic tank has no sewage pretreatment device, so that the sewage directly discharged into the three-stage septic tank contains a large amount of suspended matters, is easy to cause blockage, has high blockage frequency and is difficult to clear; moreover, the sewage treated by the three-stage septic tank is not well treated and utilized in the prior art.
Disclosure of Invention
The utility model aims to at least solve one of the technical problems in the prior art, and provides a domestic sewage treatment system which can effectively prevent sewage directly discharged into a three-stage septic tank from containing a large amount of suspended matters, well combine the three-stage septic tank with an ecological wetland system, and purify the water treated by the three-stage septic tank by using the ecological wetland system so as to improve the quality of effluent.
The utility model adopts the following technical scheme:
a domestic sewage treatment system comprising:
the sewage pretreatment tank is provided with a sewage inlet and a sewage outlet, and a basket type grille for intercepting suspended matters in sewage entering the sewage pretreatment tank from the sewage inlet is arranged in the sewage pretreatment tank;
the three-stage septic tank is provided with a sewage inlet and a septic tank sewage outlet, the sewage inlet is communicated with the sewage outlet, and the three-stage septic tank is used for removing suspended matters and organic matters in sewage;
the ecological wetland system comprises an ecological wetland pool provided with a water inlet and a water outlet, wherein the water inlet is communicated with a sewage outlet of the septic tank, a planting soil layer and a filter layer are sequentially arranged in the ecological wetland pool from top to bottom, aquatic plants are planted in the planting soil layer, sewage entering the ecological wetland pool from the water inlet is filtered by the filter layer, and the root system of the aquatic plants absorbs and purifies the sewage and then is discharged from the water outlet.
Further, the filter layer comprises a pebble layer, a gravel layer and a coarse sand layer which are sequentially arranged from bottom to top.
Further, the pebble layer has a thickness greater than the thicknesses of the crushed stone layer and the coarse sand layer.
Further, the ecological wetland tank and/or the sewage pretreatment tank are made of glass fiber reinforced plastic materials.
Further, a broken stone cushion layer is arranged at the bottom outside the ecological wetland pool and/or the sewage pretreatment pool.
Further, an anaerobic zone, an aerobic zone and a sedimentation zone which are sequentially communicated are arranged in the three-stage septic tank, biological fillers and an aeration device are arranged in the aerobic zone, the aeration device is used for aerating the aerobic zone, and sewage flowing into the three-stage septic tank flows out after sequentially flowing through the anaerobic zone, the aerobic zone and the sedimentation zone.
Further, the aeration device is positioned below the biological filler.
Further, a solar panel is arranged outside the three-stage septic tank, and the power of the aeration device is supplied by the solar panel.
Compared with the prior art, the domestic sewage treatment system has the beneficial effects that:
when the domestic sewage treatment system is used, sewage discharged into the three-stage septic tank is pretreated through the sewage pretreatment tank, namely large-area suspended matters in the sewage entering the three-stage septic tank are intercepted through the basket type grille, and a large amount of suspended matters in the sewage directly discharged into the three-stage septic tank are avoided; in addition, the three-stage septic tank is combined with the ecological wetland system, and the sewage treated by the three-stage septic tank is purified by the ecological wetland system, namely, the sewage entering the ecological wetland tank from the three-stage septic tank is filtered by the filter layer and is absorbed and purified by the root system of the aquatic plant and then discharged, so that the water quality of the effluent is improved.
Drawings
FIG. 1 is a schematic diagram of a domestic sewage treatment system according to the present utility model;
fig. 2 is a cross-sectional view of A-A in fig. 1.
Reference numerals in the drawings:
10. a sewage pretreatment pool; 101. a sewage inlet; 102. a sewage outlet; 11. basket type grille; 20. a third-stage septic tank; 201. a sewage inlet; 202. a septic tank sewage outlet; 203. an anaerobic zone; 204. an aerobic zone; 2040. a biological filler; 2041. an aeration device; 205. a precipitation zone; 21. a partition plate; 22. a solar panel; 30. an ecological wetland system; 301. an ecological wetland pool; 3011. a water inlet; 3012. a water outlet; 302. planting a soil layer; 3021. aquatic plants; 303. a pebble layer; 304. a crushed stone layer; 305. coarse sand layer; 40. and a stone-breaking cushion layer.
Detailed Description
The present utility model will be described with priority in the following description with reference to the drawings and the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly, indirectly, through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 to 2, a preferred embodiment of the present utility model shows a domestic sewage treatment system including a sewage pretreatment tank 10, a three-stage septic tank 20, and an ecological wetland system 30. The sewage pretreatment tank 10 is provided with a sewage inlet 101 and a sewage outlet 102, a basket type grille 11 is arranged in the sewage pretreatment tank 10, and the basket type grille 11 is used for intercepting suspended matters in sewage entering the sewage pretreatment tank 10 from the sewage inlet 101; the three-stage septic tank 20 is provided with a sewage inlet 201 and a septic tank sewage outlet 202, the sewage inlet 201 is communicated with the sewage outlet 102 through a pipeline, and of course, the three-stage septic tank 20 is used for removing suspended matters and organic matters in sewage; the ecological wetland system 30 comprises an ecological wetland tank 301 provided with a water inlet 3011 and a water outlet 3012, the water inlet 3011 is communicated with a septic tank sewage outlet 202, a planting soil layer 302 and a filter layer are sequentially arranged in the ecological wetland tank 301 from top to bottom, aquatic plants 3021 are planted in the planting soil layer 302, sewage entering the ecological wetland tank 301 from the water inlet 3011 is filtered through the filter layer and absorbed and purified by a root system of the aquatic plants 3021, and then the sewage is discharged from the water outlet 3012.
As can be appreciated by those skilled in the art from the above-described schemes, when the domestic sewage treatment system is in use, sewage discharged into the three-stage septic tank 20 is pretreated by the sewage pretreatment tank 10, that is, large-area suspended matters in the sewage discharged into the three-stage septic tank 20 are intercepted by the basket type grille 11, so that a large amount of suspended matters are contained in the sewage directly discharged into the three-stage septic tank 20, and thus, the phenomenon of blockage in the process of the sewage entering into the three-stage septic tank 20 is avoided, and the problems of high blockage frequency and high cleaning difficulty are avoided; after sewage enters the three-stage septic tank 20 for treatment, the sewage treated by the three-stage septic tank 20 is purified by utilizing the ecological wetland tank 301 system, namely, the three-stage septic tank 20 is combined with the ecological wetland tank 301 system, so that the sewage treated by the three-stage septic tank 20 enters the ecological wetland tank 301, is filtered by a filter layer of the ecological wetland tank 301, is absorbed and purified by a root system of the aquatic plant 3021 planted on the planting soil layer 302 in the ecological wetland tank 301, and is discharged, thereby improving the water quality of effluent, and ensuring that the water quality of the effluent of the domestic sewage treatment system of the utility model meets the standard stably.
It is worth to say that, the sewage treatment system of the utility model not only can better utilize the water treated by the three-stage septic tank 20 to provide water for the aquatic plants 3021 planted in the ecological wetland tank 301, but also can better realize the functions of saving water and greening and protecting environment, and the water treated by the three-stage septic tank 20 is further purified by the aquatic plants 3021, so that the water treated by the three-stage septic tank 20 has better purifying effect.
In the present embodiment, the aquatic plant 3021 is a reed flower or a water hyacinth, but is not limited to the reed flower or the water hyacinth.
In this embodiment, an anaerobic zone 203, an aerobic zone 204 and a sedimentation zone 205 which are sequentially communicated are disposed in the three-stage septic tank 20, two partition plates 21 are disposed in the three-stage septic tank 20 at intervals, and the two partition plates 21 divide the inner cavity of the three-stage septic tank 20 to form the anaerobic zone 203, the aerobic zone 204 and the sedimentation zone 205. Wherein, the aerobic zone 204 is internally provided with a biological filler 2040 and an aeration device 2041, and the aeration device 2041 is used for aerating the aerobic zone 204 so as to improve the oxygen mass transfer efficiency of the aerobic zone 204. Of course, the sewage flowing into the three-stage septic tank 20 flows through the anaerobic zone 203, the aerobic zone 204 and the sedimentation zone 205 in sequence and then flows out into the ecological wetland tank 301, so that the sewage discharged into the three-stage septic tank 20 from the sewage pretreatment tank 10 firstly enters the anaerobic zone 203 to perform anaerobic reaction, then enters the aerobic zone 204 to perform aerobic reaction, and finally enters the sedimentation zone 205 to perform sedimentation treatment.
In this embodiment, the aeration device 2041 is located below the biological filler 2040, so that the aeration effect of the biological filler 2040 by the aeration device 2041 can be quickened, microorganisms are attached to the biological filler 2040, and grow on the biological filler 2040 to form a biological film (the biological film can further decompose organic matters in sewage, the sewage treatment effect is good, and the sewage treatment efficiency is high), namely, the biological filler 2040 is coated, so that the organic matters in the sewage are catabolized. Those skilled in the art will appreciate that as the wastewater passes over the surface of the biofilm 2040, the organic matter and dissolved oxygen in the wastewater diffuse into the biofilm, and the microorganisms in the membrane catabolize the organic matter and anabolize the organism, thereby degrading the organic matter in the wastewater.
In this embodiment, the aeration device 2041 is a blower aeration device 2041, which is composed of a blower, a diffusion structure and an air distribution pipe, wherein the blower delivers air to the aeration device 2041 installed at the bottom of the aeration tank through a series of pipes, and oxygen in the air is transferred to the mixed liquor through the diffusion structure. Since the blast aeration device 2041 is a well-established technology, the structure and operation principle thereof will not be described here.
In the embodiment, the solar panel 22 is arranged outside the three-stage septic tank 20, and the power of the aeration device 2041 is supplied by the solar panel 22, so that the aeration device can be flexibly arranged according to the field situation, and the construction period is shortened.
In this embodiment, the filter layer includes a pebble layer 303, a gravel layer 304 and a coarse sand layer 305 sequentially arranged from bottom to top, water treated by the tertiary septic tank 20 enters the pebble layer 303 first, then enters the gravel layer 304 after being filtered by the pebble layer 303, then enters the coarse sand layer 305 after being further filtered by the gravel layer 304, and is absorbed and purified by roots of aquatic plants 3021 planted on the planting soil layer 302 after being further filtered by the coarse sand layer 305, so that the purifying effect of water treated by the tertiary septic tank 20 is greatly improved, and water treated by the tertiary septic tank 20 is purified by the ecological wetland system 30 and discharged from the water outlet. Therefore, the water treated by the three-stage septic tank 20 enters the ecological wetland system 30 to remove organic matters, trace heavy metals and a small part of nitrogen and phosphorus possibly existing in the water treated by the three-stage septic tank 20 through adsorption, filtration, precipitation, plant absorption and the like, so that the water quality of the effluent of the domestic sewage treatment system is ensured to reach the standard stably.
It is worth noting that the water outlet 3012 is connected with the gravel layer 304, the aquatic plants 3021 and the gravel layer 304 can have double purifying and filtering effects on water treated by the existing septic tank, so that water flowing out of the water outlet 3012 has a better purifying effect, can be directly discharged into a planting field, and provides water for planting of existing crops.
In this embodiment, the pebble layer 303 has a thickness greater than that of the crushed stone layer 304 and the coarse sand layer 305, so that the filtering and purifying effects of water can be further improved. The pebble layer 303 of the embodiment has a thickness of 40cm and a particle size of 4-8 mm; the thickness of the crushed stone layer 304 is 20cm, and the grain diameter is 8-10 mm; the thickness of the coarse sand layer 305 is 20cm, and the grain size is 10-12 mm, so that the water treated by the three-stage septic tank 20 can enter the inner layer of the ecological wetland tank 301 for filtration, and the quality of the effluent is improved, and the quality of the effluent is ensured to reach the standard stably.
In this embodiment, the ecological wetland tank 301 and/or the sewage pretreatment tank 10 is made of glass fiber reinforced plastic, so that the cleaning and the later maintenance of the ecological wetland tank 301 and/or the sewage pretreatment tank 10 can be facilitated.
In this embodiment, the bottom outside the ecological wetland tank 301 and/or the sewage pretreatment tank 10 is provided with a gravel cushion layer 40, and the gravel cushion layer 40 can play a role in reinforcing and hardening soil layers, so that the ecological wetland tank 301 and/or the sewage pretreatment tank 10 are conveniently installed in a soil pit in a pre-buried manner.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (8)
1. Domestic sewage treatment system, its characterized in that includes:
the sewage pretreatment tank is provided with a sewage inlet and a sewage outlet, and a basket type grille for intercepting suspended matters in sewage entering the sewage pretreatment tank from the sewage inlet is arranged in the sewage pretreatment tank;
the three-stage septic tank is provided with a sewage inlet and a septic tank sewage outlet, the sewage inlet is communicated with the sewage outlet, and the three-stage septic tank is used for removing suspended matters and organic matters in sewage;
the ecological wetland system comprises an ecological wetland pool provided with a water inlet and a water outlet, wherein the water inlet is communicated with a sewage outlet of the septic tank, a planting soil layer and a filter layer are sequentially arranged in the ecological wetland pool from top to bottom, aquatic plants are planted in the planting soil layer, sewage entering the ecological wetland pool from the water inlet is filtered by the filter layer, and the root system of the aquatic plants absorbs and purifies the sewage and then is discharged from the water outlet.
2. The domestic sewage treatment system of claim 1, wherein the filter layer comprises a pebble layer, a crushed stone layer and a coarse sand layer arranged in sequence from bottom to top.
3. The domestic sewage treatment system of claim 2, wherein the pebble layer has a thickness greater than the thicknesses of the crushed stone layer and the coarse sand layer.
4. The domestic sewage treatment system according to claim 1, wherein the ecological wetland tank and/or the sewage pretreatment tank are/is made of glass fiber reinforced plastic.
5. The domestic sewage treatment system according to claim 1, wherein a crushed stone cushion layer is arranged at the bottom outside the ecological wetland tank and/or the sewage pretreatment tank.
6. The domestic sewage treatment system according to claim 1, wherein an anaerobic zone, an aerobic zone and a sedimentation zone which are sequentially communicated are arranged in the three-stage septic tank, biological filler and an aeration device are arranged in the aerobic zone, the aeration device is used for aerating the aerobic zone, and sewage flowing into the three-stage septic tank flows out after sequentially flowing through the anaerobic zone, the aerobic zone and the sedimentation zone.
7. The domestic sewage treatment system of claim 6, wherein the aeration device is located below the biological packing.
8. The domestic sewage treatment system according to claim 6, wherein a solar panel is arranged outside the three-stage septic tank, and the power of the aeration device is supplied by the solar panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679355.9U CN220223904U (en) | 2023-06-28 | 2023-06-28 | Domestic sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679355.9U CN220223904U (en) | 2023-06-28 | 2023-06-28 | Domestic sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220223904U true CN220223904U (en) | 2023-12-22 |
Family
ID=89177796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321679355.9U Active CN220223904U (en) | 2023-06-28 | 2023-06-28 | Domestic sewage treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220223904U (en) |
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2023
- 2023-06-28 CN CN202321679355.9U patent/CN220223904U/en active Active
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