CN210313934U - Distributed sewage treatment system of constructed wetland - Google Patents
Distributed sewage treatment system of constructed wetland Download PDFInfo
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- CN210313934U CN210313934U CN201921212283.0U CN201921212283U CN210313934U CN 210313934 U CN210313934 U CN 210313934U CN 201921212283 U CN201921212283 U CN 201921212283U CN 210313934 U CN210313934 U CN 210313934U
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Abstract
The utility model discloses a distributed sewage treatment system of constructed wetland belongs to sewage treatment technical field. It includes preliminary sedimentation tank and the anaerobism pond of intercommunication, preliminary sedimentation tank's position is higher than the anaerobism pond still includes: the anaerobic wetland pool is communicated with the aerobic wetland pool, so that water in the aerobic wetland pool can transversely flow to the anaerobic wetland pool. According to the technical scheme, due to the fact that the two wetland pools are combined for treatment, the function of nitrogen and phosphorus removal can be achieved, treatment is more sufficient, efficiency is higher, in addition, occupied space is relatively small, and the requirement of rural sewage treatment is met.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment technique and specifically relates to a distributed sewage treatment system of constructed wetland.
Background
For a long time, because the economic bearing capacity of rural water treatment is poor, the water environment protection consciousness is weak, and a large amount of rural domestic sewage is directly discharged without being treated. Along with the continuous acceleration of the urbanization process and the continuous increase of the discharge amount of the rural domestic sewage, the rural domestic sewage becomes another important pollution source for polluting water bodies. The treatment of rural domestic sewage is always one of the difficulties of environmental protection due to the influence of factors in various aspects such as geographical conditions, life style, economic development degree and the like. The artificial wetland sewage treatment technology is a sewage treatment technology developed in the end of the 70 s in the 20 th century, is more suitable for sewage treatment of towns or villages with smaller scale, adopts artificial wetlands for sewage treatment in many areas, and can play a role in purifying domestic sewage.
For example, patent publication No. CN108862903A, entitled unpowered, low-carbon and environment-friendly rural sewage treatment system discloses such a technology: the device comprises a water inlet pipe, a fine filter tank, an anaerobic tank, an anoxic tank, an aerobic tank, a first membrane tank, an anaerobic tank, an aerobic tank, a second membrane tank and a water outlet pipe which are sequentially communicated; the other end of the water outlet pipe is connected with a purified water inlet of the centrifugal filter device; the effluent water sump is the cylinder type, and the intermediate position is provided with the rotation axis in the effluent water sump, fixedly connected with auger blade on the rotation axis, and the last a plurality of holes that leak that are provided with of auger blade, rotation axis surface are provided with a plurality of holes, and the hole passes through the inside pipe connection flocculating agent device of rotation axis, and the flocculating agent device sets up inside the rotation axis. The sewage is treated by a series of sewage treatment processes, so that the comprehensive purification treatment of the sewage is realized, and the purification degree of the sewage is improved.
For another example, patent publication No. CN 104098223B, entitled rural distributed domestic sewage treatment system and method, discloses such a scheme: comprises a water inlet forebay, a water distribution pool, an ecological floating island wetland and a water outlet sedimentation tank; a grid is arranged between the water inlet forebay and the water distribution pool; the distribution tank, the ecological floating island wetland and the effluent sedimentation tank are sequentially communicated through a water inlet pipe, a first water outlet pipe, a second water outlet pipe and a third water outlet pipe, and water inlet and outlet are controlled by a valve; the ecological floating island wetland consists of a pebble layer, a gravel layer, a coarse sand layer, a fine sand layer and a water body from bottom to top in sequence. The scheme has the characteristics of improving the concentration of the mixed liquid, high hydraulic power degree, no blockage, no power consumption, simple and convenient operation and management, and good greening effect and ecological effect, and is suitable for popularization and application.
However, the above-mentioned techniques have their advantages, but have some problems, such as the first solution is complicated in structure and needs a plurality of different lagoons to implement, which results in an excessive space occupation; the second scheme adopts a wetland treatment tank, so that the treatment effect is poor.
Therefore, the above technical problem needs to be solved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a distributed sewage treatment system of constructed wetland, aim at solve current sewage treatment technique area occupied big, the not good technical problem of treatment effect.
In order to solve the technical problem, the utility model provides a basic technical scheme does:
the utility model provides a distributed sewage treatment system of constructed wetland, includes preliminary sedimentation tank and the anaerobism pond of intercommunication, the position of preliminary sedimentation tank is higher than the anaerobism pond, still includes:
the anaerobic wetland pool is communicated with the aerobic wetland pool, so that water in the aerobic wetland pool can transversely flow to the anaerobic wetland pool.
Furthermore, the aerobic wetland pool and the anaerobic wetland are equal in height and are arranged side by side, and a first permeable wall is arranged between the aerobic wetland pool and the anaerobic wetland.
Furthermore, a first chemical adding pipe is arranged in the first permeable wall and used for adding microorganisms into the aerobic wetland tank and the anaerobic wetland tank.
Further, the position of the lowest layer of the inner cavity of the aerobic wetland pool is higher than or equal to the highest layer of the inner cavity of the anaerobic wetland pool;
one side of the anaerobic wetland pool is provided with a water distribution channel with the effective height more than or equal to the height of the anaerobic wetland pool, and the water distribution channel is communicated with the anaerobic wetland pool through a second permeable wall; and the water outlet of the aerobic wetland tank is communicated with the water distribution channel.
Furthermore, a methane exposure device is arranged on a pipeline between the anaerobic wetland pool and the water distribution channel.
Furthermore, a second dosing pipe and a third dosing pipe are respectively arranged in the aerobic wetland pool and the anaerobic wetland pool.
Furthermore, an oxygen aeration device is arranged on a pipeline between the anaerobic pool and the aerobic wetland pool and is used for filling oxygen into the aerobic wetland pool.
Furthermore, the aerobic wetland pool comprises a first aquatic plant layer, a first soil layer, a vermiculite layer, a first zeolite layer, an active carbon layer and a gravel layer from top to bottom.
Further, the anaerobic wetland pool comprises a second aquatic plant layer, a second soil layer, a coarse sand valley layer, a second zeolite layer, a ceramsite layer and a pebble layer from top to bottom.
Furthermore, coarse sand corn layer includes coarse sand layer, corn shell layer, cotton boll shell layer and pine wood layer from top to bottom in proper order.
The utility model has the advantages that:
the technical scheme of the utility model a distributed sewage treatment system of constructed wetland, including the preliminary sedimentation tank and the anaerobism pond of intercommunication, the position of preliminary sedimentation tank is higher than the anaerobism pond still includes: the anaerobic wetland pool is communicated with the aerobic wetland pool, so that water in the aerobic wetland pool can transversely flow to the anaerobic wetland pool. According to the technical scheme, due to the fact that the two wetland pools are combined for treatment, the function of nitrogen and phosphorus removal can be achieved, treatment is more sufficient, efficiency is higher, in addition, occupied space is relatively small, and the requirement of rural sewage treatment is met.
Drawings
FIG. 1 shows a first embodiment of a distributed sewage treatment system for constructed wetlands;
fig. 2 is a second embodiment of a distributed sewage treatment system for constructed wetlands.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 2, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
The utility model relates to a distributed sewage treatment system of constructed wetland, including the preliminary sedimentation tank 1 and the anaerobism pond 1 of intercommunication, the position of preliminary sedimentation tank 1 is higher than anaerobism pond 2 still includes: the aerobic wetland pool 3 and the anaerobic wetland pool 4, the top of the aerobic wetland pool 3 is communicated with the anaerobic wetland pool 2, and the aerobic wetland pool 3 is communicated with the anaerobic wetland pool 4 to ensure that water in the aerobic wetland pool 3 can transversely flow to the anaerobic wetland pool 4.
In the embodiment, the combined arrangement of the aerobic wetland tank 3 and the anaerobic wetland tank 4 can improve the denitrification and dephosphorization effect, so that the treatment is more thorough, and the two wetland tanks are adopted to save space on the premise of ensuring the treatment effect. Specifically, the water in the aerobic wetland tank 3 can horizontally flow into the anaerobic wetland tank 2 in the transverse direction, that is, the water in the aerobic wetland tank 3 does not enter from the top of the anaerobic wetland tank 4 and flows to the top of the anaerobic wetland tank 4 layer by layer during specific operation, so that the water treated by the aerobic wetland tank 3 can permeate into various functional layers of the anaerobic wetland tank 4 and diffuse in the anaerobic wetland tank 4, and the denitrification effect of the anaerobic wetland tank 4 can be better realized. It should be noted that, in the present technical solution, the horizontal inflow in the transverse direction means that the sewage passing through the aerobic wetland tank 3 enters each functional layer from the side of the anaerobic wetland tank 4, rather than entering from the top of the anaerobic wetland tank 4 and spreading layer by layer to the bottom. The sewage in the aerobic wetland tank 3 can horizontally flow to the corresponding functional layer of the anaerobic wetland tank 4 from different functional layers in the aerobic wetland tank 3; or the sewage in the aerobic wetland tank 3 is vertically treated and then flows out from the bottom to a specific cavity, and the cavity is communicated with one side of the anaerobic wetland tank 4, so that the sewage in the cavity can flow into the anaerobic wetland tank from the side.
In detail, in the present embodiment, the preliminary sedimentation tank 1 is used to filter large particles, and other floating impurities in the sewage, thereby preventing the wetland tank from being clogged. In the anaerobic tank 2, phosphorus accumulating bacteria in the sewage hydrolyze phosphorus in cells into orthophosphate under anaerobic conditions and degrade colloidal and insoluble organic matters in the sewage. The sewage passes through the aerobic wetland tank 3 to remove heavy metal ions; because the aerobic wetland tank 3 has better oxygenation conditions, phosphorus-accumulating bacteria generated in the anaerobic tank 2 can be used for absorbing a large amount of phosphorus, so as to realize phosphorus removal; and under the condition of oxygenation, the ammonia nitrogen is oxidized into nitrate nitrogen. The sewage treated by the aerobic wetland tank 3 transversely flows into the anaerobic wetland tank 4, and the nitrate nitrogen is denitrified into nitrogen gas to be discharged under the anaerobic condition of the anaerobic wetland tank 4. Through the treatment, the functions of removing particles and impurities, adsorbing heavy metal ions, removing nitrogen and phosphorus and the like are respectively realized.
It should be understood that the pre-sedimentation tank 1, the anaerobic tank 1, the aerobic wetland tank 3 and the anaerobic wetland tank 4 in the technical scheme can be in a modular design or can be in a structure laid on site. When the modular design is adopted, each structure comprises a box-type shell which is a prefabricated structure, and the box-type shell of each pool can be an integrated structure or formed by sequentially overlapping a plurality of circumferentially closed ring-type structures. Various functional structure layers are arranged in the box-type shell. Therefore, each structure can be installed according to a set flow when the structure is assembled. When a field layout structure is adopted, pits corresponding to different pools need to be dug on the field, and isolation is performed on the bottom and the peripheral side of the pit, for example, the design of the bottom and the peripheral side is realized by means of reinforced concrete and the like. Of course, it is also possible to construct an outer shape with an inner cavity by using reinforced concrete or bricks above the ground, and then arrange various functional layers inside. It should be noted that in the present embodiment, whether a box structure or a field layout structure is used, the shape may be any suitable shape, such as a cube or a cylinder. Namely, the technical scheme of the utility model can be designed into a modular structure, and various prefabricated parts are adopted for assembly and use, or the structure can be built by adopting a mode of on-site construction; the installation mode can be that the installation is arranged on the ground or partially on the ground and partially underground or completely buried.
In detail, referring to fig. 1, the aerobic wetland tank 3 and the anaerobic wetland tank 4 are arranged in parallel and at the same height, and a first permeable wall 5 is arranged between the aerobic wetland tank 3 and the anaerobic wetland tank 4.
In this embodiment, the height of the functional layer is equal to the height of the functional layer from the bottom to the top in the aerobic wetland pool 3 and the height of the functional layer from the bottom to the top in the anaerobic wetland pool 4. Of course, it is not limited thereto, and it may be such that the bottom of the anaerobic wetland tank 4 is lower than the bottom of the aerobic wetland tank 3. In this embodiment, the sewage in the aerobic wetland tank 3 will enter the side of the anaerobic wetland tank 4 through the first water permeable wall 5 and enter the interior from the side of the anaerobic wetland tank 4. In detail, the first permeable wall 5 is made of permeable blocks. The first water permeable wall 5 separates the aerobic wetland tank 3 from the anaerobic wetland tank 4 and allows water to pass therethrough. When sewage is injected into the aerobic wetland tank 3, the sewage continuously flows downwards in the vertical direction, and when the sewage at the first permeable wall 5 reaches a certain saturation degree, the sewage flows to the anaerobic wetland tank 4 under the action of water pressure.
Preferably, a first chemical adding pipe 6 is arranged in the first permeable wall 5 for adding microorganisms into the aerobic wetland tank 3 and the anaerobic wetland tank 4. When the first dosing pipe 6 is added with microorganisms, the first dosing pipe can be diffused into the aerobic wetland pool 3 and the anaerobic wetland pool 4, can degrade the microorganisms to enter the modified matrix, promote the formation of a composite biological film on the surface of matrix particles, enhance the activity of the biological film, improve the purification capacity of pollutants, construct a microorganism-matrix system with a pollutant reinforced purification effect, and further enhance the removal effect of water pollutants.
Referring to fig. 2, as another embodiment, the lowest layer of the inner cavity of the aerobic wetland tank 3 is higher than or equal to the highest layer of the inner cavity of the anaerobic wetland tank 4; wherein, one side of the anaerobic wetland pool 4 is provided with a water distribution channel 7 with the effective height being more than or equal to the height of the anaerobic wetland pool 4, and the water distribution channel 7 is communicated with the anaerobic wetland pool 4 through a second permeable wall 8; the water outlet of the aerobic wetland tank 3 is communicated with the water distribution channel 7. That is, in the present embodiment, the aerobic wetland tank 3 and the anaerobic wetland tank 4 are separated from each other, wherein the aerobic wetland tank 3 is higher than the anaerobic wetland tank 4. A water distribution channel 7 is additionally arranged on the anaerobic wetland tank 4, and water flows between the water distribution channel 7 and the anaerobic wetland tank 4 through a second permeable wall 8. Namely, the water in the water distribution channel 7 flows into the anaerobic wetland tank 4 through the second permeable wall 8.
In detail, the anaerobic wetland tank 4 is communicated with the water distribution channel 7 through a pipeline, and a methane exposure device 9 is arranged between the anaerobic wetland tank 4 and the water distribution channel 7 through a pipeline. Methane can be input into the anaerobic wetland tank 4 through the methane aeration device 9 to ensure the anaerobic condition in the anaerobic wetland tank 4.
And similarly, a second medicine adding pipe and a third medicine adding pipe are respectively arranged in the aerobic wetland tank 3 and the anaerobic wetland tank 4. The two dosing tubes are not shown in the figure. The second dosing tube and the third dosing tube have the same principle as the first dosing tube 6, and are not described herein again.
Referring to fig. 1, in order to ensure the oxygenation condition in the aerobic wetland tank 3, an oxygen aeration device 12 is provided in a pipeline between the anaerobic tank 2 and the aerobic wetland tank 3 for feeding oxygen into the aerobic wetland tank 3. When in use, oxygen is input into the aerobic wetland tank 3 through the oxygen aeration device 12 to ensure that the oxygen aeration condition meets the working requirement.
In detail, the aerobic wetland tank 3 comprises, from top to bottom, a first aquatic plant layer 31, a first soil layer 32, a vermiculite layer 33, a first zeolite layer 34, an activated carbon layer 35 and a gravel layer 36. The anaerobic wetland pool 4 comprises a second aquatic plant layer 41, a second soil layer 42, a coarse sand grain layer 43, a second zeolite layer 44, a ceramsite layer 45 and a pebble layer 46 from top to bottom. The coarse sand grain layer 43 includes a coarse sand layer, a rice grain layer, a cotton boll layer and a pine layer from top to bottom in sequence. The root systems of the first aquatic plant layer 31 and the second aquatic plant layer 41 can adsorb heavy metal ions, the first soil layer and the second soil layer meet the growth requirement of the aquatic plant layers, the vermiculite layer 33 has the functions of ventilation and water retention, and the first zeolite layer 34 and the second zeolite layer 44 have extremely strong ion adsorption capacity and can realize nitrogen removal; the activated carbon layer 35 contains a large number of micropores, has a huge and non-specific surface area, can effectively remove chromaticity and odor, and can remove most organic pollutants and certain inorganic matters in secondary effluent, including certain toxic heavy metals; the gravel layer 36 has a filtering and water-permeable function. The coarse sand grain layer 43 achieves a good water retention and adsorption effect. The ceramic particle layer 45 has the functions of water resistance and air retention, and the pebble layer 46 has the functions of filtration and water permeability.
Generally speaking, the technical scheme of the utility model among, good oxygen wetland pond 3 realizes that the heavy metal is got rid of and the dephosphorization, anaerobism wetland pond 4 realizes that the heavy metal gets rid of and the denitrogenation, and both combine to realize the effective processing to domestic sewage to entire system area occupied is not big, can adapt to rural sewage treatment's use.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a distributed sewage treatment system of constructed wetland, includes preliminary sedimentation tank (1) and anaerobism pond (2) of intercommunication, the position of preliminary sedimentation tank (1) is higher than anaerobism pond (2), its characterized in that still includes:
the utility model discloses a water treatment device, including aerobic wetland pond (3) and anaerobism wetland pond (4), the top intercommunication in aerobic wetland pond (3) anaerobism wetland pond (4), aerobic wetland pond (3) with anaerobism wetland pond (4) communicate with each other and make water in aerobic wetland pond (3) can the lateral flow direction anaerobism wetland pond (4).
2. The distributed sewage treatment system of the artificial wetland according to claim 1, wherein:
the aerobic wetland pool (3) and the anaerobic wetland pool (4) are equal in height and are arranged side by side, and a first permeable wall (5) is arranged between the aerobic wetland pool (3) and the anaerobic wetland pool (4).
3. The distributed sewage treatment system of the artificial wetland according to claim 2, wherein:
a first chemical adding pipe (6) is arranged in the first permeable wall (5) and is used for adding microorganisms into the aerobic wetland tank (3) and the anaerobic wetland tank (4).
4. The distributed sewage treatment system of the artificial wetland according to claim 1, wherein:
the position of the lowest layer of the inner cavity of the aerobic wetland pool (3) is higher than or equal to the highest layer of the inner cavity of the anaerobic wetland pool (4);
wherein, one side of the anaerobic wetland pool (4) is provided with a water distribution channel (7) with the effective height being more than or equal to the height of the anaerobic wetland pool (4), and the water distribution channel (7) is communicated with the anaerobic wetland pool (4) through a second permeable wall (8); the water outlet of the aerobic wetland tank (3) is communicated with the water distribution channel (7).
5. The distributed sewage treatment system of the artificial wetland according to claim 4, wherein:
and a methane exposure device (9) is arranged between the anaerobic wetland pool (4) and the water distribution channel (7) through a pipeline.
6. The distributed sewage treatment system of the artificial wetland according to claim 4, wherein:
and a second medicine feeding pipe and a third medicine feeding pipe are respectively arranged in the aerobic wetland tank (3) and the anaerobic wetland tank (4).
7. The distributed sewage treatment system of any one of claims 1 to 6, wherein:
and an oxygen aeration device (12) is arranged on a pipeline between the anaerobic pool (2) and the aerobic wetland pool (3) and used for filling oxygen into the aerobic wetland pool (3).
8. The distributed sewage treatment system of any one of claims 1 to 6, wherein:
the aerobic wetland pool (3) comprises a first aquatic plant layer (31), a first soil layer (32), a vermiculite layer (33), a first zeolite layer (34), an activated carbon layer (35) and a gravel layer (36) from top to bottom.
9. The distributed sewage treatment system of any one of claims 1 to 6, wherein:
the anaerobic wetland pool (4) comprises a second aquatic plant layer (41), a second soil layer (42), a coarse sand grain layer (43), a second zeolite layer (44), a ceramsite layer (45) and a pebble layer (46) from top to bottom.
10. The distributed sewage treatment system of the artificial wetland according to claim 9, wherein:
the coarse sand grain layer (43) sequentially comprises a coarse sand layer, a rice grain shell layer, a cotton boll shell layer and a pine wood layer from top to bottom.
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| CN201921212283.0U CN210313934U (en) | 2019-07-30 | 2019-07-30 | Distributed sewage treatment system of constructed wetland |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880372A (en) * | 2021-11-15 | 2022-01-04 | 北京广诚环境科技有限公司 | Domestic sewage constructed wetland treatment system and construction process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880372A (en) * | 2021-11-15 | 2022-01-04 | 北京广诚环境科技有限公司 | Domestic sewage constructed wetland treatment system and construction process |
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