CN110066019B - Sustainable constructed wetland system - Google Patents
Sustainable constructed wetland system Download PDFInfo
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- CN110066019B CN110066019B CN201910414243.2A CN201910414243A CN110066019B CN 110066019 B CN110066019 B CN 110066019B CN 201910414243 A CN201910414243 A CN 201910414243A CN 110066019 B CN110066019 B CN 110066019B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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Abstract
The invention discloses a sustainable constructed wetland system, which comprises a foundation pit, wherein a packing layer, a planting layer and a shallow water layer are arranged in the foundation pit from bottom to top, a basement is arranged at the bottom of the foundation pit, a detection unit containing various detectors, a control unit in signal connection with the detection unit and an execution unit in signal connection with the control unit are arranged on the foundation pit and the basement, and the detection unit is used for detecting various water quality indexes and generating detection signals; the control unit is used for analyzing the detection signal and generating an execution signal; the execution unit comprises a water level adjusting component for collecting water in the shallow water layer, an aeration component for changing the content of various gases and a water quality adjusting component for adjusting various water quality indexes; all three being responsive to an execution signal. In the scheme, the control unit analyzes the detection signal and then controls the water level adjusting assembly, the aeration assembly and the water quality adjusting assembly to operate, so that various indexes are changed to facilitate the growth of wetland plants, the ecological balance of the wetland is maintained, and the service life of a wetland system is prolonged.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sustainable artificial wetland system.
Background
The artificial wetland research originated in the 70 th 20 th century and is derived on the basis of the research of the wetland. The artificial wetland is a technology for treating sewage and sludge by using the physical, chemical and biological triple synergistic action of soil, artificial medium, plants and microorganisms in the process of flowing along a certain direction by using sewage and sludge which are controllably dosed to the artificially constructed wetland from the artificially constructed and controlled-operation ground similar to the marshland. The action mechanism of the plant nutrient solution comprises the actions of adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, transformation, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and various animals. The artificial wetland has the characteristics of low investment, low energy consumption, large buffer capacity, simple process and the like, and is widely used for preventing and treating domestic sewage, storm runoff, rural non-point source pollution and lake pollution.
The vertical flow artificial system has high pressure due to the deep water level, so that high requirements are provided for the anti-seepage technology of the artificial wetland pool. At present, chinese patent with publication number CN103288215B discloses an anti-seepage artificial wetland system, which comprises an artificial wetland pool with anti-seepage layers arranged at the bottom and around, wherein the artificial wetland pool is sequentially provided with a planting layer planted with wetland plants and used for primary purification of sewage, a gravel layer used for secondary purification of sewage, a composite packing layer used for secondary purification of sewage, and a drain pipe, and the anti-seepage layers are made of the following substances in parts by mass: 0.06-0.07 part of water-soluble silicon dioxide; 0.08-0.1 part of methyl potassium silicate; 0.4-0.5 part of potassium silicate; 260 to 1800 portions of river sand and 70 to 220 portions of water. The anti-seepage layer prepared by the water-soluble silicon dioxide, the methyl potassium silicate, the river sand and the water greatly improves the anti-aging and high and low temperature resistance of the anti-seepage layer, thereby improving the anti-seepage capability; but has the following disadvantages: when the artificial wetland pool encounters long-time rainfall weather, a large amount of rainwater accumulated in the wetland is difficult to discharge due to the excellent seepage-proofing performance, the existing ecological environment of the wetland is easy to destroy, and the service life of a wetland system is shortened. Therefore, there is a need for a sustainable artificial wetland system, which has the functions of automatically adjusting the ecosystem, maintaining the ecological balance of the wetland, and prolonging the service life of the wetland system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sustainable artificial wetland system which has the functions of automatically adjusting an ecological system, maintaining the ecological balance of the wetland and prolonging the service life of the wetland system.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a sustainable constructed wetland system, includes the foundation ditch, by supreme packing layer, planting layer and the shallow water layer of having filled in proper order down in the foundation ditch, foundation ditch bottom intercommunication has the basement, be equipped with on foundation ditch and the basement:
the detection unit is provided with a plurality of detectors of different types and is used for detecting various water quality indexes of the shallow water layer and generating corresponding detection signals;
the control unit is in signal connection with the detection unit, responds to the detection signal, and is used for analyzing the detection signal and generating a corresponding execution signal;
the execution unit is in signal connection with the control unit and comprises a water level adjusting component for collecting water in the shallow water layer, an aeration component for changing the content of various gases in the foundation pit and a water quality adjusting component for adjusting various water quality indexes of the shallow water layer; the water level adjusting assembly, the aeration assembly and the water quality adjusting assembly all respond to execution signals output by the control unit.
By adopting the technical scheme, the detection unit generates detection signals according to various water quality indexes in the shallow water layer and outputs the detection signals to the control unit, and the control unit outputs execution signals after analysis to control the operation of the execution units such as the water level adjusting assembly, the aeration assembly, the water quality adjusting assembly and the like, so that various indexes of the water quality are changed, the water quality of the shallow water layer is suitable for the growth of wetland plants, the ecological balance of the wetland is maintained, and the service life of a wetland system is prolonged.
The invention is further set that the water level adjusting component comprises a water collecting pipe with the top exposed on the surface of the shallow water layer, the bottom of the water collecting pipe is communicated with a collecting box placed in the underground chamber, and an electromagnetic valve controlled by a control unit is arranged at the communication part of the water collecting pipe and the collecting box; a water pump is placed on the periphery of the collecting box, a water pumping pipe communicated with the collecting box and a water conveying pipe used for conveying water to a shallow water layer are communicated with the water pump, the top of the water conveying pipe is positioned in the top of the water collecting pipe, and iron wires are fixed on the top of the water collecting pipe and the top of the water conveying pipe; a plurality of water guide pipes which are obliquely arranged and the bottoms of which are communicated with the water collecting pipe are paved in the packing layer, and geotechnical cloth is coated on the tops of the water guide pipes.
By adopting the technical scheme, when the rainfall is excessive, the water level of the shallow water layer rises, and at the moment, the rainwater higher than the opening at the top of the water collecting pipe flows into the water collecting pipe and enters the collecting box for storage, so that the excessive rainwater is treated by utilizing the water collecting pipe and the collecting box, and the damage of the excessive rainwater to the ecological system of the wetland is avoided; pumping the water in the collecting box to the top of the water collecting pipe by using a water pump, spraying the water from the top of the water collecting pipe under the action of the water pump, and returning the water to the shallow water layer to adjust the water level of the shallow water layer; the arrangement of the wire netting and the geotextile prevents impurities such as sand and stone from entering each pipeline, and reduces the possibility of blockage of each pipeline, thereby achieving the effects of filtering and protecting and ensuring the normal operation of the water level adjusting assembly.
The invention is further provided that the water collecting pipe, the collecting box, the water pumping pipe and the water conveying pipe are all made of stainless steel, and polytetrafluoroethylene plates are compounded on the surfaces of the four.
By adopting the technical scheme, utilize the stainless steel to make and receive the water pipe, the collecting box, drinking-water pipe and raceway to this guarantees to receive the water pipe, the intensity of collecting box, drinking-water pipe and raceway, and the polytetrafluoroethylene board is the macromolecular compound that is formed by tetrafluoroethylene through polymerization, has good chemical stability, corrosion resistance, because the water acidity and alkalinity of retrieving is undulant big, so need have the corrosion resistance to acid, alkali, salt, oxidant, the setting of polytetrafluoroethylene board has played the guard action to water level control assembly, the life of water level control assembly and wetland system has been prolonged.
The invention is further set that a geotextile layer is laid at the bottom of the foundation pit, a purification component is arranged below the geotextile layer and comprises a plurality of seepage holes arranged at the bottom of the foundation pit, the bottoms of the seepage holes are commonly communicated with a water collecting pipe positioned in the underground chamber, a water collecting tank used for collecting purified water is placed on the collecting tank, a connecting pipe used for being connected with the water collecting pipe is communicated on the water collecting tank, and a layer of reverse osmosis membrane is fixed in the connecting pipe.
Through adopting above-mentioned technical scheme, moisture in the foundation ditch gathers in the purification back follow infiltration hole entering collector pipe through planting layer and packing layer, and when the moisture accumulation volume in the collector pipe was greater than reverse osmosis membrane's osmotic pressure, moisture can be stored in getting into the collector pipe through reverse osmosis membrane to the effect of purifying sewage has been realized.
The invention is further set that the top of the inner wall of the connecting pipe is provided with an internal thread, the outer wall of the bottom of the water collecting pipe is provided with an external thread matched with the internal thread in a threaded manner, the inner wall of the connecting pipe is also fixedly provided with a plurality of fixed blocks which are abutted against the bottom of the water collecting pipe, and a filter screen attached to the inner wall of the water collecting pipe is placed on the plurality of fixed blocks.
By adopting the technical scheme, the filter screen is supported by the fixing block, so that the water in the water collecting pipe is filtered, and the reverse osmosis membrane is prevented from being damaged by impurities; and threaded connection's form has realized dismantling the connection between collector pipe and the connecting pipe, and the operating personnel of being convenient for changes filter screen, clearance impurity.
The invention is further set that the aeration component comprises an air pump arranged on the water collecting tank, the air pump is communicated with an air storage tank and an air delivery pipe, the air delivery pipe penetrates through the geotextile layer and extends into the filler layer, the top of the air delivery pipe is communicated with a plurality of aeration pipes, the aeration pipes are communicated with each other and are arranged in a cross mode on the same horizontal plane, a plurality of aeration holes are formed in the aeration pipes, and steel wire meshes for preventing sand and stones from entering the aeration pipes are fixed on the aeration holes.
By adopting the technical scheme, air is input into the aeration pipe by the air pump and enters the packing layer through the aeration holes, so that sufficient gas components such as oxygen, nitrogen and the like are provided for the wetland, and the water quality purification by microorganisms in the wetland is facilitated; the arrangement of the steel wire meshes prevents sand and stones from entering, so that the aeration pipe is protected, the smooth operation of the aeration assembly is ensured, and the aim of adjusting the content of various gases in the foundation pit is fulfilled.
The invention is further set that the water quality adjusting assembly comprises a plurality of storage tanks and a plurality of powder conveying pumps which are arranged in the underground chamber, the powder conveying pumps correspond to the storage tanks one by one, the powder conveying pumps are in signal connection with the control unit, one end of each powder conveying pump is communicated with the storage tanks, and the other ends of all the powder conveying pumps are communicated with a conveying pipe which is used for putting chemical medicines in the storage tanks into the shallow water layer.
Through adopting above-mentioned technical scheme, utilize the powder delivery pump to drop into the shallow water layer with the chemical in the different storage tanks to this composition in adjusting shallow water in situ moisture through chemical reaction changes corresponding quality of water index, and the powder delivery pump is controlled by the control unit, has realized the function of automatically regulated quality of water.
The invention is further provided that one end of the conveying pipe, which is communicated with the shallow water layer, is provided with a sealing part, the sealing part comprises a semicircular plate fixed at the end part of the conveying pipe, the end part of the conveying pipe is hinged with a circular cover plate used for sealing the conveying pipe, the circular cover plate is provided with a semicircular groove which is attached to the semicircular plate, the inner wall of the conveying pipe is also fixed with a guide plate which guides materials to the position, which is not provided with the semicircular groove, of the circular cover plate, and a spring is fixed between the guide plate and the circular cover plate.
Through adopting above-mentioned technical scheme, utilize circular apron to seal the conveyer pipe tip, when the conveying pump transported substance material, the material was by circular apron one side of deflector guide, and circular apron rotates this moment and makes the material flow in the shallow water layer from the conveyer pipe, and the spring plays the material and carries the effect of finishing back self-sealing to in avoiding the moisture in the shallow water layer to flow back into the conveyer pipe, ensure the purity of material.
The invention is further set that the detection unit also comprises a water level detection assembly for detecting the water level of the shallow water layer, a water level groove communicated with the shallow water layer is arranged on the side wall of the foundation pit, the water level detection assembly comprises a floating plate in sliding connection with the water level groove, two pressure sensors in signal connection with the control unit are arranged on the side wall of the water level groove, a plurality of convex blocks are arranged on the peripheral side of the floating plate, and a plurality of guide grooves in sliding connection with the convex blocks are arranged on the inner wall of the water level groove.
Through adopting above-mentioned technical scheme, utilize the buoyancy of kickboard to realize the detection of kickboard to the water level to through the slip of water level groove, lug and guide way restriction kickboard, make the kickboard go up and down smoothly along with the water level, and utilize pressure sensor perception kickboard whether reach alert highest and minimum water level, thereby be convenient for to the control of water level regulating assembly, reach the purpose of control shallow water layer water level, be favorable to quality of water regulating assembly to adjust the concentration of each composition in the moisture.
The invention is further set that the detection unit also comprises a sampling assembly for sampling various detectors, the sampling assembly comprises a sampling pipe communicated with the shallow water layer, a sampling valve controlled by the control unit is installed on the sampling pipe, a detection box communicated with the sampling pipe is fixed in the underground chamber, and various detectors are detachably connected on the inner wall of the detection box.
Through adopting above-mentioned technical scheme, utilize the sampling tube with the moisture in the shallow water layer guide to the detection case in so that all kinds of detectors detect the sample to accurately detect out all kinds of water quality indexes, be favorable to adjusting quality of water.
In conclusion, the beneficial technical effects of the invention are as follows:
1. in the scheme, the control unit analyzes the detection signal and then controls the water level adjusting assembly, the aeration assembly and the water quality adjusting assembly to operate, so that various indexes are changed to facilitate the growth of wetland plants, the ecological balance of the wetland is maintained, and the service life of a wetland system is prolonged;
2. according to the scheme, the stainless steel is used for manufacturing the water collecting pipe, the collecting box, the water pumping pipe and the water conveying pipe, so that the strength of each pipeline is improved, and the polytetrafluoroethylene plate is a high-molecular compound formed by polymerizing tetrafluoroethylene, so that the high-molecular compound has excellent chemical stability and corrosion resistance, plays a role in protecting the water level adjusting assembly, and prolongs the service life of the water level adjusting assembly and the wetland system;
3. the buoyancy of this scheme utilization kickboard realizes the detection of kickboard to the water level to through the slip of water level groove, lug and guide way restriction kickboard, make the kickboard go up and down smoothly along with the water level, and utilize pressure sensor perception kickboard whether reach the highest and minimum water level of alert, thereby be convenient for to the control of water level regulating assembly, reach the purpose of control shallow water layer water level, be favorable to the concentration of each composition in the quality of water regulating assembly regulation moisture.
Drawings
FIG. 1 is a schematic diagram of the component structure of the embodiment;
FIG. 2 is a schematic view of the entire structure of the embodiment;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic structural view of an aeration module in the embodiment;
FIG. 5 is a schematic structural view of a seal member in the embodiment;
FIG. 6 is a schematic sectional view showing the structure of the purification module in the embodiment.
In the figure: 1. a foundation pit; 10. a basement; 11. an impermeable layer; 12. a geotextile layer; 13. a water level tank; 131. a guide groove; 2. a filler layer; 211. a water conduit; 22. planting a layer; 23. a shallow water layer; 3. a water level detection assembly; 31. a floating plate; 311. a bump; 32. a pressure sensor; 4. a sampling assembly; 41. a sampling tube; 411. a sampling valve; 42. a detection box; 5. a water level adjustment assembly; 51. a water collecting pipe; 511. an electromagnetic valve; 52. a collection box; 53. a water pump; 531. a water pumping pipe; 532. a water delivery pipe; 6. a purification assembly; 61. a water seepage hole; 62. a water collection pipe; 621. an accumulation section; 63. a connecting pipe; 631. a filter screen; 632. a reverse osmosis membrane; 633. a fixed block; 634. a water stop valve; 64. a water collection tank; 65. a support frame; 7. an aeration assembly; 71. an air pump; 72. a gas delivery pipe; 73. an aeration pipe; 74. an aeration hole; 8. a water quality adjusting assembly; 81. a material storage tank; 82. a powder delivery pump; 83. a delivery pipe; 84. a sealing member; 841. a semicircular plate; 842. a circular cover plate; 843. a guide plate; 844. a spring; 845. a flange; 846. a semicircular groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, the sustainable artificial wetland system comprises a foundation pit 1 and a basement 10 positioned at the lower side of the foundation pit 1, wherein a packing layer 2, a planting layer 22 and a shallow water layer 23 are sequentially filled in the foundation pit 1 from bottom to top, and the packing layer 2 contains gravels, sandy soil and various fillers and is rich in microorganisms. The microorganisms are used to decompose suspended matter, colloids and soluble solids in the water into inorganic substances and remove nitrogen by biological nitrification-denitrification. The planting layer 22 is designed for wetland plants, the wetland plants have the capacity of decomposing and converting organic matters and other substances, and the wetland plants can directly absorb available nutrient substances such as nitrogen, phosphorus and the like in water body from water through absorption and assimilation. Ammonium salts, nitrates and phosphates in water can be absorbed by plant bodies by this action. Secondly, the root system of the wetland plant can adsorb and enrich heavy metals and toxic and harmful substances. Thirdly, wetland plants provide a larger surface area for the adsorptive growth of microorganisms, and the root systems of the wetland plants are important habitation, attachment and propagation sites for the microorganisms. The shallow water layer 23 is formed by accumulating moisture on the surface of the wetland, provides sufficient moisture for the growth of wetland plants and enriches the ecosystem of the wetland.
In this embodiment, the foundation pit 1 is in the shape of an inverted round platform, and the inner wall of the foundation pit is covered with an impermeable layer 11 for preventing moisture from permeating into the soil around the foundation pit 1. And a plurality of layers of geotextile are laid at the bottom of the foundation pit 1 to form a geotextile layer 12. The basement 10 is located the downside of foundation ditch 1, and its cavity in, and basement 10 one side intercommunication has a passageway so that operating personnel gets in and out.
As shown in fig. 1 and 2, a detection unit, a control unit and an execution unit are arranged on the foundation pit 1 and the basement 10.
The detection unit is provided with a plurality of detectors of different types and is used for detecting various water quality indexes of the shallow water layer 23 and generating corresponding detection signals; the various detectors include but are not limited to PH water quality automatic analyzer, turbidity water quality automatic analyzer, dissolved oxygen water quality automatic analyzer, chemical oxygen demand water quality on-line automatic monitor, ammonia nitrogen water quality automatic analyzer and total phosphorus water quality automatic analyzer.
As shown in fig. 1 and 3, a water level tank 13 communicated with the shallow water layer 23 is formed on the side wall of the foundation pit 1, the detection unit further comprises a water level detection assembly 3, and the water level detection assembly 3 is used for detecting the water level of the shallow water layer 23 and comprises a floating plate 31 and a pressure sensor 32. The floating plate 31 is in a rectangular plate-shaped structure, is suspended on the liquid level of the water level tank 13, is fixed with the convex blocks 311 at the periphery, is provided with the guide groove 131 for the sliding of the convex blocks 311 on the side wall of the water level tank 13, and the length direction of the guide groove 131 is consistent with the height direction of the water level tank 13, so as to guide the sliding of the floating plate 31 in the water level tank 13 and avoid the floating plate 31 from turning over. Two pressure sensors 32 are respectively provided at both ends of the guide groove 131, and both the pressure sensors 32 are fixed to the side wall of the water level groove 13. When the floating plate 31 collides with the pressure sensor 32 under the buoyancy or gravity, the pressure sensor 32 senses whether the floating plate 31 reaches the maximum and minimum water levels for warning, and outputs a signal to the control unit.
As shown in fig. 1 and 2, the detecting unit further includes a sampling assembly 4 for sampling various detecting apparatuses, and the sampling assembly 4 includes a sampling tube 41 and a detecting box 42. The sampling tube 41 is a vertical tubular structure with a top portion in communication with the shallow water layer 23 and a bottom portion extending into the basement 10. The detection box 42 is fixed on the inner wall of the basement 10, and the interior of the detection box is hollow and communicated with the sampling pipe 41, so that moisture can enter the detection box conveniently. The sampling tube 41 is further provided with a sampling valve 411, and the sampling valve 411 is in signal connection with the control unit so as to control whether to collect a sample. Various detectors are detachably mounted in the detection box 42 and used for detecting various water quality indexes of the water in the shallow water layer 23, and the various detectors include but are not limited to a PH water quality automatic analyzer, a turbidity water quality automatic analyzer, a dissolved oxygen water quality automatic analyzer, a chemical oxygen demand water quality on-line automatic monitor, an ammonia nitrogen water quality automatic analyzer and a total phosphorus water quality automatic analyzer. The detection unit is used for detecting various water quality indexes so that the control unit can judge whether the ecological environment is suitable for wetland plants and other organisms to live.
The control unit is in signal connection with the detection unit, responds to the detection signal, and is used for analyzing the detection signal and generating a corresponding execution signal; in this embodiment, the control unit is an industrial control computer, and the analysis capability and the processing capability meet the requirements of the detection unit and the execution unit.
The execution unit is in signal connection with the control unit and comprises a water level adjusting component 5 for collecting water in the shallow water layer 23, an aeration component 7 for changing the content of various gases in the foundation pit 1 and a water quality adjusting component 8 for adjusting various water quality indexes of the shallow water layer 23; the water level regulating assembly 5, the aeration assembly 7 and the water quality regulating assembly 8 are all responsive to execution signals output by the control unit.
As shown in fig. 2, the water level adjusting assembly 5 includes a water collecting pipe 51 and a collecting tank 52, and the collecting tank 52 is placed in the basement 10 for storing moisture. The water collecting pipes 51 are tubular structures, the bottoms of the water collecting pipes are communicated with the collecting box 52, the tops of the water collecting pipes extend upwards to the shallow water layer 23, and a plurality of water collecting pipes 51 are distributed around the inner side wall of the foundation pit 1. Referring to fig. 3, the top of the water collecting pipe 51 is bent toward the middle of the foundation pit 1, and an iron wire net is fixed to the end of the water collecting pipe 51 to prevent the floating materials and suspended impurities on the surface of the shallow water layer 23 from entering. When the water level of the shallow water layer 23 rises to the top of the water collecting pipe 51, the water enters the water collecting pipe 51 from the top opening of the water collecting pipe 51 and then enters the collecting tank 52 for storage. The water pump 53 is arranged around the collecting box 52, and the water pump 53 is communicated with a water pumping pipe 531 and a water conveying pipe 532. One end of the water pumping pipe 531 is communicated with the collecting tank 52 for pumping water, the water delivery pipe 532 is vertically arranged, the top of the water delivery pipe is penetrated into the top of the water collecting pipe 51, and the end part of the water delivery pipe is also fixed with a wire mesh. The water pipe 532 is used for conveying water to the shallow water layer 23, so as to adjust the water level of the shallow water layer 23 and avoid the influence of too low water level of the shallow water layer 23 on the plant growth of the planting layer 22. The water collecting pipe 51, the collecting box 52, the water pumping pipe 531 and the water conveying pipe 532 are all made of stainless steel, and polytetrafluoroethylene plates are compounded on the surfaces of the four. Polytetrafluoroethylene is a plastic with the best corrosion resistance, is not corroded by known acids, alkalis, salts and oxidants, and has excellent chemical stability and corrosion resistance. Therefore, the tetrafluoroethylene plates protect the water level adjusting assembly 5, and the service lives of the water level adjusting assembly 5 and the wetland system are prolonged.
As shown in fig. 2, a plurality of water conduits 211 are further laid in the packing layer 2, the water conduits 211 are arranged obliquely, the top of the water conduits 211 is located at the junction of the packing layer 2 and the planting layer 22, and the top of the water conduits 211 is coated with geotextile to prevent broken stones from entering; the bottom of the water guiding pipe 211 is communicated with the water collecting pipe 51, and the water guiding pipe 211 is used for guiding excessive water into the water collecting pipe 51, so that the ecological environment in the packing layer 2 is prevented from being damaged by the excessive water.
As shown in fig. 2 and 4, the aeration assembly 7 includes an air pump 71, an air pipe 72, an aeration pipe 73, and aeration holes 74. The air pump 71 is placed on the water collection tank 64; the air pipe 72 is vertically arranged, the bottom of the air pipe is connected with the air pump 71, and the top of the air pipe penetrates through the geotextile layer 12 and extends into the filler layer 2 and is communicated with the aeration pipe 73; the aeration pipes 73 are horizontally arranged in the packing layer 2, in the embodiment, the number of the aeration pipes 73 is 2, and the two aeration pipes 73 are crosswise arranged and communicated with each other. The aeration holes 74 are formed in the side wall of the aeration pipe 73 and are used for communicating the inside and the outside of the aeration pipe 73, so that air can flow out of the aeration pipe 73 conveniently; a steel wire mesh for preventing sand and stone from entering the aeration pipe 73 is also fixed on the aeration hole 74.
As shown in fig. 2, the water quality adjusting assembly 8 includes a plurality of storage tanks 81 and a plurality of powder delivery pumps 82, and the storage tanks 81 and the powder delivery pumps 82 are located in the basement 10, and the two are the same in number and correspond to each other. The storage tank 81 is placed in the basement 10 and stores different chemicals which are used for reacting with the components of the shallow water layer 23, so as to change various water quality indexes. One end of the powder delivery pump 82 is communicated with the storage tank 81, the other end is communicated with a delivery pipe 83, and the top of the delivery pipe 83 is communicated with the shallow water layer 23 and is used for putting the chemicals in the storage tank 81 into the shallow water layer 23. And the powder delivery pump 82 is in signal connection with the control unit so that the control unit can select the delivered chemicals.
The top of the pipe 83 is bent to extend downward into the shallow water layer 23 so as to communicate with the shallow water layer 23, and is provided with a sealing member 84. referring to fig. 5, the sealing member 84 includes a semicircular plate 841, a circular cover plate 842, a guide plate 843, and a spring 844. The semicircular plate 841 is semicircular and its arc-shaped peripheral side is fixed to the end edge of the delivery pipe 83 so that the end of the delivery pipe 83 is opened in a semicircular shape. The circular cover 842 is circular and has a semicircular slot 846 formed therein, and the semicircular slot 846 is fitted to the inner side of the semicircular plate 841. The middle of the circular cover 842 is hinged to the end of the delivery tube 83 so that the circular cover 842 can be inverted. The guide plate 843 is fixed to the inner wall of the feed pipe 83, and has one end extending obliquely to the circular cover 842 without having a semicircular groove 846 for guiding the chemical to be fed. A spring 844 is fixed between the guide plate 843 and the circular cover 842 and is used for automatically closing the end of the conveying pipe 83 after the material is conveyed. A flange 845 is integrally formed on one half of the circumferential side surface of the circular cover 842 exposed outside the delivery pipe 83, the shape of the flange 845 is matched with the end edge of the delivery pipe 83, and the flange 845 is used for improving the sealing property.
As shown in fig. 2 and 6, the purification assembly 6 includes a seepage hole 61, a water collection pipe 62, a connection pipe 63, and a water collection tank 64. The water seepage holes 61 are arranged at the lower side of the geotextile layer 12 and communicated with the top of the basement 10, and the water seepage holes 61 are in an inverted round table shape and are used for guiding water seeping through the geotextile layer 12 to flow down; the water collecting pipe 62 is located at the top of the basement 10, the plurality of water seepage holes 61 are communicated with the water collecting pipe 62 together, and the bottom of the water collecting pipe 62 extends vertically downwards. The top of collector pipe 62 is equipped with support frame 65, and support frame 65 upper half is the annular frame structure, contradicts with geotechnological cloth layer 12 lower surface, and support frame 65 lower half is four shaft-like structures, and all fixes with collector pipe 62 inner wall to this geotechnological cloth layer 12 to infiltration hole 61 department supports. The connecting pipe 63 is sleeved at the bottom of the water collecting pipe 62, an external thread is arranged on the outer wall of the bottom of the water collecting pipe 62, an internal thread is arranged at the top of the inner wall of the connecting pipe 63, and the external thread is in threaded fit with the internal thread to realize the connection between the connecting pipe 63 and the water collecting pipe 62. Still be fixed with a plurality of fixed blocks 633 of contradicting with the water catch pipe 62 bottom on the connecting pipe 63 inner wall, placed circular shape filter screen 631 on the fixed block 633, filter screen 631 week side and the laminating of water catch pipe 62 inner wall. Still be fixed with one deck reverse osmosis membrane 632 in the connecting pipe 63, sewage and rainwater in the foundation ditch 1 gather in getting into the collector pipe 62 from infiltration hole 61 after planting the purification of layer 22 and packing layer 2, and when the moisture accumulation volume in the collector pipe 62 was greater than reverse osmosis membrane 632's osmotic pressure, moisture can be stored in getting into the header tank 64 through reverse osmosis membrane 632, purifies the completion of subassembly 6 and purifies.
When the wetland system is used, the detection unit generates detection signals according to various water quality indexes in the shallow water layer 23 and outputs the detection signals to the control unit, and the control unit outputs execution signals after analysis to control the operation of the execution units such as the water level adjusting assembly 5, the aeration assembly 7, the adjusting assembly and the like, so that various indexes of the water quality are changed, the water quality of the shallow water layer 23 is suitable for wetland plant growth, the ecological balance of the wetland is maintained, and the service life of the wetland system is prolonged.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a sustainable constructed wetland system, includes foundation ditch (1), pack by supreme packing layer (2), planting layer (22) and shallow water layer (23) in proper order down in foundation ditch (1), characterized by: foundation ditch (1) bottom intercommunication has basement (10), be equipped with on foundation ditch (1) and basement (10):
the detection unit is provided with a plurality of detectors of different types and is used for detecting various water quality indexes of the shallow water layer (23) and generating corresponding detection signals;
the control unit is in signal connection with the detection unit, responds to the detection signal, and is used for analyzing the detection signal and generating a corresponding execution signal;
the execution unit is in signal connection with the control unit and comprises a water level adjusting component (5) for collecting water in the shallow water layer (23), an aeration component (7) for changing the content of various gases in the foundation pit (1) and a water quality adjusting component (8) for adjusting various water quality indexes of the shallow water layer (23); the water level regulating component (5), the aeration component (7) and the water quality regulating component (8) all respond to execution signals output by the control unit;
the water level adjusting assembly (5) comprises a water collecting pipe (51) with the top exposed on the surface of the shallow water layer (23), the bottom of the water collecting pipe (51) is communicated with a collecting box (52) placed in the basement (10), and an electromagnetic valve (511) controlled by a control unit is installed at the communication part of the water collecting pipe (51) and the collecting box (52); a water pump (53) is placed on the periphery of the collection box (52), a water pumping pipe (531) communicated with the collection box (52) and a water conveying pipe (532) used for conveying water to the shallow water layer (23) are communicated on the water pump (53), the top of the water conveying pipe (532) is positioned in the top of the water collecting pipe (51), and iron wire nets are fixed on the top of the water collecting pipe (51) and the top of the water conveying pipe (532); a plurality of water guide pipes (211) which are obliquely arranged and the bottoms of which are communicated with the water collecting pipe (51) are paved in the packing layer (2), and geotechnical cloth is coated on the tops of the water guide pipes (211).
2. A sustainable artificial wetland system according to claim 1, wherein: the water collecting pipe (51), the collecting box (52), the water pumping pipe (531) and the water conveying pipe (532) are all made of stainless steel, and polytetrafluoroethylene plates are compounded on the surfaces of the four.
3. A sustainable artificial wetland system according to claim 1, wherein: geotechnological cloth layer (12) have been laid to foundation ditch (1) bottom, geotechnological cloth layer (12) have purification subassembly (6), purification subassembly (6) include a plurality of infiltration hole (61) of seting up in foundation ditch (1) bottom, and are a plurality of the common intercommunication in infiltration hole (61) bottom has collector pipe (62) that are located basement (10), place header tank (64) that are used for collecting the moisture after the purification on collecting box (52), the intercommunication has connecting pipe (63) that are used for being connected with collector pipe (62) on header tank (64), connecting pipe (63) internal fixation has one deck reverse osmosis membrane (632).
4. A sustainable artificial wetland system according to claim 3, wherein: connecting pipe (63) inner wall top is equipped with the internal thread, have on the outer wall of collector pipe (62) bottom with internal thread screw-thread fit's external screw thread, still be fixed with a plurality of fixed block (633) of contradicting bottom collector pipe (62) on connecting pipe (63) inner wall, it is a plurality of place filter screen (631) with the laminating of collector pipe (62) inner wall on fixed block (633).
5. A sustainable artificial wetland system according to claim 3, wherein: aeration subassembly (7) are including placing air pump (71) on header tank (64), the intercommunication has gas holder and gas-supply pipe (72) on air pump (71), gas-supply pipe (72) run through geotechnological cloth layer (12) extend into packing layer (2) in, just gas-supply pipe (72) top intercommunication has many aeration pipes (73), and many aeration pipes (73) communicate each other and cross arrangement on same horizontal plane, a plurality of aeration holes (74) have been seted up on aeration pipe (73), all be fixed with on aeration hole (74) and be used for hindering the wire net in sand and stone gets into aeration pipe (73).
6. A sustainable artificial wetland system according to claim 1, wherein: quality of water adjusting part (8) is including placing a plurality of storage tanks (81) and a plurality of powder delivery pump (82) in basement (10), powder delivery pump (82) and storage tank (81) one-to-one, powder delivery pump (82) and the control unit signal connection, just powder delivery pump (82) one end with storage tank (81) intercommunication, common intercommunication has one to be arranged in throwing into conveyer pipe (83) in shallow water layer (23) with the chemical in storage tank (81) on all powder delivery pump (82) the other end.
7. A sustainable artificial wetland system according to claim 6, wherein: conveyer pipe (83) and the communicating one end of shallow water layer (23) are equipped with sealing member (84), sealing member (84) are including fixing semicircle board (841) at conveyer pipe (83) tip, conveyer pipe (83) tip articulates there is circular apron (842) that is used for sealing conveyer pipe (83), offered on circular apron (842) semicircular groove (846) with semicircle board (841) laminating, still be fixed with deflector (843) of not offering semicircular groove (846) department with material direction circular apron (842) on conveyer pipe (83) inner wall, deflector (843) with be fixed with spring (844) between circular apron (842).
8. A sustainable artificial wetland system according to claim 1, wherein: the detecting element is still including water level detection subassembly (3) that are used for detecting shallow water layer (23) water level, set up on foundation ditch (1) lateral wall with communicating water level groove (13) of shallow water layer (23), water level detection subassembly (3) include with water level groove (13) sliding connection's kickboard (31), install two pressure sensor (32) with the control unit signal connection on water level groove (13) lateral wall, kickboard (31) week side is equipped with a plurality of lugs (311), seted up on water level groove (13) inner wall multichannel with guide way (131) that lug (311) slided and are connected.
9. A sustainable artificial wetland system according to claim 1, wherein: the detecting element still includes sampling subassembly (4) for all kinds of detector samples, sampling subassembly (4) include with shallow water layer (23) communicating sampling tube (41), install on sampling tube (41) and receive the sample valve (411) of the control unit control, basement (10) internal fixation have with sampling tube (41) communicating detection case (42), and all kinds of detectors can be dismantled and connect on detection case (42) inner wall.
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| CN201910414243.2A CN110066019B (en) | 2019-05-17 | 2019-05-17 | Sustainable constructed wetland system |
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| CN201910414243.2A CN110066019B (en) | 2019-05-17 | 2019-05-17 | Sustainable constructed wetland system |
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| CN114908784B (en) * | 2022-05-11 | 2024-05-14 | 浙江泛海交通工程有限公司 | Maintenance method of high-water-level pit after construction |
| CN114920425B (en) * | 2022-05-26 | 2023-04-07 | 中国科学院生态环境研究中心 | Constructed wetland purification method rainwater retrieval and utilization device |
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| US20080156731A1 (en) * | 2002-10-08 | 2008-07-03 | Water Standard Company, Llc | Water desalination systems and methods |
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