CN211896514U - Compound constructed wetland sewage treatment system - Google Patents
Compound constructed wetland sewage treatment system Download PDFInfo
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- CN211896514U CN211896514U CN201922128980.4U CN201922128980U CN211896514U CN 211896514 U CN211896514 U CN 211896514U CN 201922128980 U CN201922128980 U CN 201922128980U CN 211896514 U CN211896514 U CN 211896514U
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Abstract
The utility model discloses a composite artificial wetland sewage treatment system, which comprises a grid, a biochemical pool, a sedimentation tank, a water distribution pool and a greenhouse which are connected in sequence, wherein a wetland pool is arranged below the earth surface inside the greenhouse; the wetland pond includes upper wetland and lower floor's wetland, be provided with the interlayer of prevention of seepage water between upper wetland and the lower floor's wetland, the one end of upper wetland is linked together through inlet tube and distribution tank, the other end of upper wetland is connected with the drop pipe, the transition pond is installed to drop pipe below, the one end that the transition pond is close to the wetland pond is linked together through connecting pipe and lower floor's wetland, the one end that the transition pond was kept away from to lower floor's wetland has the catch basin through going out water piping connection, install the check valve on the connecting pipe between transition pond and the lower floor's wetland. Through the improvement, the flowing time of sewage is prolonged while the space is saved, the greenhouse and the upper wetland have the effects of isolating and preserving heat of the lower wetland, and the purification effect at low temperature is improved.
Description
Technical Field
The utility model relates to a cardboard production technical field especially relates to a compound constructed wetland sewage treatment system.
Background
The artificial wetland is a comprehensive ecological system, is a ground similar to a marshland constructed and operated by manpower, is a technology for treating sewage and sludge by utilizing the physical, chemical and biological triple synergistic effects of soil, artificial media, plants, microorganisms and the like, realizes the removal of harmful substances in the wastewater by the modes of filtration, adsorption, coprecipitation, ion exchange, plant absorption, microbial decomposition and the like, and simultaneously realizes the purification of water by the circulation of nutrient substances and water. The artificial wetland sewage treatment system can be divided into a surface flow artificial wetland and an undercurrent type artificial wetland, wherein the undercurrent type artificial wetland comprises a vertical undercurrent type artificial wetland and a horizontal undercurrent type artificial wetland; the surface flow artificial wetland has shallow water level, poor sanitary condition and less application because the operation effect is influenced by the change of the surrounding environment. The undercurrent type artificial wetland is a wetland system which is most widely used at present, the sleep of the undercurrent type artificial wetland is maintained below the ground surface, wherein the water flow direction of the vertical undercurrent type artificial wetland is vertical to a wetland bed, and the water flow direction of the horizontal undercurrent type artificial wetland is parallel to the wetland bed. The artificial wetland has great advantages in the aspects of nitrogen and phosphorus removal and sewage purification, but has many problems, the filler in the artificial wetland is easy to block, and the dissolved oxygen in the sewage is gradually reduced to limit the treatment effect; in addition, the sewage treatment effect of the artificial wetland at low temperature is obviously reduced, and the problems restrict the further development of the artificial wetland.
Disclosure of Invention
The utility model provides a compound constructed wetland sewage treatment system to the dissolved oxygen that appears in solving present constructed wetland sewage treatment system is low, the filler blocks up and the poor problem of treatment effect under the low temperature.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a composite artificial wetland sewage treatment system comprises a grating, a biochemical pool, a sedimentation pool, a water distribution pool and a wetland pool which are sequentially connected, and also comprises a greenhouse, wherein the wetland pool is positioned below the ground surface in the greenhouse; the wetland pond includes upper wetland and lower floor's wetland, be provided with the interlayer of prevention of seepage water between upper wetland and the lower floor's wetland, the one end of upper wetland is linked together through inlet tube and distribution tank, the other end of upper wetland is connected with the drop pipe, the transition pond is installed to drop pipe below, the one end that the transition pond is close to the wetland pond is linked together through connecting pipe and lower floor's wetland, the one end that the transition pond was kept away from to lower floor's wetland has the catch basin through going out water piping connection, install the check valve on the connecting pipe between transition pond and the lower floor's wetland.
Preferably, the upper wetland and the lower wetland both comprise a horizontal undercurrent type wetland and a vertical undercurrent type wetland which are arranged in series, the structures of the horizontal undercurrent type wetland and the vertical undercurrent type wetland are respectively the same, wherein the horizontal undercurrent type wetland of the upper wetland is communicated with the distribution tank, and the vertical undercurrent type wetland of the lower wetland is communicated with the water collecting tank.
Preferably, the horizontal undercurrent type wetland comprises a large block layer, a single particle layer and a mixed particle layer which are sequentially arranged from top to bottom, and the top of the horizontal undercurrent type wetland of the upper layer wetland is provided with a soil layer; wetland plants are planted in the soil layer, the filler of the large-block layer can be selected from zeolite, vermiculite, limestone, blast furnace slag or a mixture of the zeolite, the vermiculite, the limestone and the blast furnace slag, the particle size of the filler of the large-block layer is 40-60mm, the filler of the single-particle layer is shale with the particle size of 25-35mm, and the filler of the mixed particle layer is a mixture of zeolite and sand and has the particle size of 5-15 mm.
Preferably, the horizontal undercurrent type wetland and the vertical undercurrent type wetland are separated by a vertically arranged separation plate, the top end of the separation plate of the upper layer wetland is arranged at an interval with the soil layer, and the top end of the separation plate of the lower layer wetland is arranged at an interval with the interlayer.
Preferably, install the overhead gage that the level set up between bold layer and the single grained layer, install the lower baffle that the level set up between single grained layer and the mixed grained layer, the equal fixed connection of one end of overhead gage and lower baffle is on the lateral wall of horizontal undercurrent type wetland, the equal fixed connection of the other end of overhead gage and lower baffle is on the division board, the limbers has been seted up to the one end that the overhead gage is close to the distribution tank, the limbers has also been seted up to the one end that the lower baffle is close to the division board, the inlet tube is linked together with the mixed grained layer.
Preferably, one end of the distribution pool close to the lower-layer wetland is fixedly connected with a distribution pipe, the distribution pipe penetrates through the lower-layer wetland and extends to the upper part of the transition pool, a valve is arranged on the distribution pipe between the distribution pool and the lower-layer wetland, and a gravel layer is paved in the transition pool.
Preferably, the vertical subsurface flow wetland comprises an upper baffle plate and a lower baffle plate which are vertically arranged, the upper baffle plate and the lower baffle plate are alternately arranged in the vertical subsurface flow wetland, the bottom end of the upper baffle plate and the bottom of the vertical subsurface flow wetland are arranged at intervals, the bottom end of the upper baffle plate is fixedly connected with an inclined baffle plate which is obliquely arranged, the top end of the lower baffle plate and the top of the vertical subsurface flow wetland are arranged at intervals, the height of the lower baffle plate is sequentially reduced along the water flow direction, the top of the vertical subsurface flow wetland is also provided with a soil layer, and wetland plants are planted in the soil layer.
Preferably, the vertical subsurface flow wetland is divided into a plurality of treatment cavities by upper baffle plates and lower baffle plates which are alternately arranged, each treatment cavity is filled with a filler, and the fillers filled in each treatment cavity along the water flow direction are as follows in sequence: bauxite 50-60mm, shale 40-50mm, a mixture of fly ash and sand 30-40mm, sand 20-30mm, a mixture of zeolite and sand 10-20mm, and crushed stone 5-10 mm.
Preferably, the water inlet pipe is provided with a valve, and the end part of the drop pipe is provided with a cover.
Preferably, the wetland plants comprise cress, water hyacinth, calamus, reed, cattail and wild rice shoots.
The utility model discloses the beneficial effect who has does: the utility model, through superposing the upper layer wetland and the lower layer wetland, saves space and prolongs the flowing time of sewage, and the upper layer wetland and the lower layer wetland are respectively provided with the vertical subsurface flow type wetland and the horizontal subsurface flow type wetland, thereby fully utilizing the advantages of the upper layer wetland and the lower layer wetland, and the upper baffle plate, the lower baffle plate, the upper baffle plate and the lower baffle plate increase the flow of sewage, increase the contact time of the sewage and the filler, and further improve the sewage treatment effect; the utility model discloses set up the transition pond, sewage falls and has improved the dissolved oxygen volume in the sewage in the transition pond, overcomes the not enough defect of lower floor's wetland oxygen suppliment, is favorable to improving the nitrogen and phosphorus removal effect of lower floor's wetland. By arranging the greenhouse, the upper wetland and the lower wetland, the sewage treatment function of the upper wetland is closed when the temperature is lower, and the greenhouse and the upper wetland play a certain anti-freezing, isolating and heat-insulating role on the lower wetland, so that the purification capacity of the sewage treatment system at low temperature is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the upper baffle plate of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A compound artificial wetland sewage treatment system is shown in figure 1, and comprises a grid 1, a biochemical pond 2, a sedimentation tank 3, a water distribution tank 4 and a wetland pond which are connected in sequence, and also comprises a greenhouse 5, wherein the wetland pond is positioned below the ground surface in the greenhouse 5; the wetland pond includes upper wetland 6 and lower floor's wetland 7, be provided with the interlayer 8 of prevention of seepage water between upper wetland 6 and the lower floor's wetland 7, the one end of upper wetland 6 is linked together through inlet tube and distribution tank 4, the other end of upper wetland 6 is connected with drop pipe 9, transition pond 10 is installed to drop pipe 9 below, the one end that transition pond 10 is close to the wetland pond is linked together through connecting pipe and lower floor's wetland 7, the one end that transition pond 10 was kept away from to lower floor's wetland 7 has catch basin 11 through going out water piping connection, install check valve 12 on the connecting pipe between transition pond 10 and the lower floor's wetland 7, install the valve on the inlet tube, the lid is installed to the tip of drop pipe.
The upper wetland 6 comprises a horizontal undercurrent type wetland 13 and a vertical undercurrent type wetland 14 which are arranged in series, the horizontal undercurrent type wetland 13 of the upper wetland 6 is communicated with the distribution tank 4, the lower wetland 7 comprises a vertical undercurrent type wetland 14 and a horizontal undercurrent type wetland 13 which are arranged in series, and the vertical undercurrent type wetland 14 of the lower wetland is communicated with the water collecting tank 11. The upper wetland 6 and the lower wetland 7 have the same structure of a horizontal undercurrent type wetland 13, and the upper wetland 6 and the lower wetland 7 have the same structure of a vertical undercurrent type wetland 14.
The horizontal undercurrent type wetland 13 comprises a large block layer 15, a single particle layer 16 and a mixed particle layer 17 which are sequentially arranged from top to bottom, and the top of the horizontal undercurrent type wetland 13 of the upper layer wetland 6 is provided with a soil layer 18; the soil layer 18 is planted with wetland plants 19, the filler of the large block layer 15 can be selected from zeolite, vermiculite, limestone, blast furnace slag or a mixture thereof, the particle size of the filler of the large block layer 15 is 40-60mm, the filler of the single particle layer 16 is shale with the particle size of 25-35mm, and the filler of the mixed particle layer 17 is a mixture of zeolite and sand and has the particle size of 5-15 mm. The filler is easy to generate clogging phenomenon, and the clogging of the filler generally occurs between 5mm and 10mm of the surface filler layer, so that the particles with relatively larger particle size are selected in the surface water distribution area, and the clogging problem of the filler can be relieved; meanwhile, the surface layer is paved with the filler with larger grain diameter, which is also beneficial to the entering of oxygen, a nitrification area is easy to form, and a denitrification area is formed in the lower layer water distribution area with small grain diameter, which is beneficial to improving the denitrification efficiency of the wetland; compared with a mode of configuring the filler by single particle size or multi-particle size mixing, the mode of configuring the filler by multiple layers can improve the adsorption rate of the filler to nitrogen and phosphorus, the nitrogen removal efficiency of the zeolite and the shale is higher, the denitrification effect can be effectively improved by the horizontal subsurface flow type wetland 13, the phosphorus can be removed to a certain degree, and organic pollutants can be effectively removed.
The horizontal undercurrent type wetland 13 and the vertical undercurrent type wetland 14 are separated by a vertically arranged separation plate 22, the top end of the separation plate 22 of the upper layer wetland 6 is arranged at an interval with the soil layer 18, sewage flows into the vertical undercurrent type wetland 14 of the upper layer wetland 6 from the horizontal undercurrent type wetland 13 of the upper layer wetland 6 across the interval, the top end of the separation plate 22 of the lower layer wetland 7 is arranged at an interval with the interlayer 8, and the sewage flows into the vertical undercurrent type wetland 14 of the lower layer wetland 7 from the horizontal undercurrent type wetland 13 of the lower layer wetland 7 across the interval. One end of the distribution tank 4 close to the lower wetland 7 is fixedly connected with a distribution pipe 23, the distribution pipe 23 penetrates through the lower wetland 7 and extends to the upper part of the transition tank 10, and a valve is arranged on the distribution pipe 23 between the distribution tank 4 and the lower wetland 7.
Install last baffle 20 that the level set up between bold layer 15 and the single grained layer 16, install the lower baffle 21 that the level set up between single grained layer 16 and the mixed grained layer 17, the equal fixed connection of the one end of going up baffle 20 and lower baffle 21 is on the lateral wall of horizontal undercurrent formula wetland 13, the equal fixed connection of the other end of going up baffle 20 and lower baffle 21 is on division board 22, the limbers has been seted up to the one end that goes up baffle 20 is close to distribution tank 4, the limbers has also been seted up to the one end that lower baffle 21 is close to division board 22, the inlet tube is linked together with mixed grained layer 17. Through setting up overhead gage 20 and lower baffle 21, sewage gets into horizontal undercurrent formula wetland 13 from mixed grained layer 17 after, flows with the mode of "S" type curve, and this has just increased the flow of sewage to obviously improve purifying effect, simultaneously, avoided the phenomenon of short stream to appear, do not increase wetland area in addition when increasing the sewage flow.
As shown in fig. 1 and 2, the vertical undercurrent type wetland 14 comprises an upper baffle plate 25 and a lower baffle plate 26 which are vertically arranged, the upper baffle plate 25 and the lower baffle plate 26 are alternately arranged in the vertical undercurrent type wetland 14, the bottom end of the upper baffle plate 25 and the bottom end of the vertical undercurrent type wetland 14 are arranged at intervals, the bottom end of the upper baffle plate 25 is fixedly connected with an inclined baffle plate 27 which is obliquely arranged, and the inclined baffle plate 27 can further increase the flowing time of sewage and improve the purification effect. The top end of the lower baffle plate 26 is arranged at an interval with the top of the vertical subsurface wetland 14, the height of the lower baffle plate 26 is sequentially reduced along the water flow direction, the soil layer 18 is also arranged on the top of the vertical subsurface wetland 14, and wetland plants 19 are planted in the soil layer 18. After the sewage enters the vertical undercurrent type wetland 14, the upper baffle plates 25 and the lower baffle plates 26 which are arranged at intervals prolong the flowing time of the sewage, so that the contact time of the sewage and the filler in the vertical undercurrent type wetland 14 is prolonged, and the sewage treatment effect is further improved; the lower baffle plates 26 which are sequentially lowered form a certain liquid level difference, so that the phenomenon of water blocking is avoided.
The vertical subsurface flow wetland 14 is divided into a plurality of treatment cavities by the upper baffle plates 25 and the lower baffle plates 26 which are alternately arranged, the treatment cavities are respectively filled with fillers, and the fillers filled in the treatment cavities along the water flow direction are as follows: the filler has high phosphorus adsorption efficiency, can effectively remove phosphorus in the sewage and can remove nitrogen in the sewage, wherein the filler comprises bauxite 28 with the thickness of 50-60mm, shale 29 with the thickness of 40-50mm, a mixture of fly ash and sand 30 with the thickness of 30-40mm, sand 31 with the thickness of 20-30mm, a mixture of zeolite and sand 32 with the thickness of 10-20mm and crushed stone 33 with the thickness of 5-10 mm.
The wetland plants 19 selected by the embodiment comprise cress, water hyacinth, calamus flavus, reed, cattail and wild rice stem, the aquatic plants are important components of the artificial wetland and have great influence on the removal of nitrogen and phosphorus, the aquatic plants can directly absorb nutrient substances in sewage, the oxygen secretion function of root systems of the aquatic plants provides proper environmental conditions for decomposing and converting organic matters by microorganisms, the oxygen quantity transmitted by the plants to the wetland directly influences the operation mechanism of the plants, and the aquatic plants can transmit about 90% of oxygen to the periphery of root systems, so that the nitrification of microorganisms is enhanced, and the nitrogen in water is removed. Different plants have different influences on the purification effect of the artificial wetland, but the higher the diversity of the plants is, the more beneficial the purification of sewage is, the better the nitrogen removal rate of the selected calamus and reed in the embodiment is, and the phosphorus removal efficiency of the cattail, reed and cane shoots is also high; the cress and the water hyacinth can increase microorganisms for removing phosphorus and nitrogen in the wetland, and the microorganisms play an important role in the process of removing nitrogen and phosphorus in the wetland, so that the adsorption efficiency of nitrogen and phosphorus can be improved.
A gravel layer 34 is laid in the transition pool 10 to further improve the nitrogen and phosphorus removal capability of the system.
The artificial wetland mainly depends on plant absorption and microorganism nitrification and denitrification for removing nitrogen. In winter, the activity of the microorganisms is reduced and even the activity of the microorganisms is stopped due to withering of plants, the removal rate of the constructed wetland to nitrogen is always low, and the activity of the nitrifying and denitrifying bacteria is basically stopped below 5 ℃. In this embodiment, the wetland pool is located in the greenhouse 5, which provides temperature guarantee for the nitrification and denitrification of microorganisms, and simultaneously, the water inlet pipe valve is closed, the water drop pipe 9 is covered, the distribution pipe 23 valve is opened, and the upper wetland 6 is used as a further anti-freezing heat preservation isolation layer of the lower wetland 7, so that the heat loss of the wetland pool is reduced, and the proceeding of the nitrification and denitrification of microorganisms is guaranteed.
The removal of total phosphorus depends mainly on substrate adsorption and absorption by wetland plants 19. The adsorption capacity of the artificial wet foundation to the phosphorus is improved along with the rise of the temperature; the wetland plants 19 will release phosphorus into the water after withering in winter, thereby increasing the burden of phosphorus treatment of the wetland pool. And the utility model discloses well wetland pond is located warmhouse booth 5, and wetland plant 19 can not wither, also can not be to the release phosphorus in the water, and greenhouse and upper wetland 6 have all played the effect of preventing frostbite and keeping warm and keeping apart to lower floor's wetland 7, have guaranteed the absorptive normal clear of matrix.
The removal of COD mainly depends on the degradation of microorganisms, and under the conditions of dissolved oxygen and proper temperature, the removal rate of COD is greatly improved. The utility model discloses warmhouse booth 5 and upper wetland 6 that set up have played the effect of preventing frostbite and keeping warm isolation to lower floor's wetland 7, have guaranteed the temperature of lower floor's wetland 7, and during sewage fell into transition pond 10 behind the distribution pipe 23, increased the dissolved oxygen in the sewage, guaranteed the dissolved oxygen in the sewage to the dissolved oxygen that the wetland got rid of COD and the condition of temperature have been satisfied, the wetland got rid of COD's under the low temperature has been guaranteed.
In addition, the utility model, through superposing the upper wetland 6 and the lower wetland 7, saves space and prolongs the flowing time of sewage, and the upper wetland 6 and the lower wetland 7 are respectively provided with the vertical subsurface flow type wetland 14 and the horizontal subsurface flow type wetland 13, thereby fully utilizing the advantages of the two, and the upper baffle 20, the lower baffle 21, the upper baffle plate 25 and the lower baffle plate 26 increase the flow of sewage, increase the contact time of sewage and filler, and further improve the sewage treatment effect; the utility model discloses set up transition pond 10, the sewage falls the dissolved oxygen volume that has improved in the transition pond 10, overcomes the not enough defect of 7 oxygen suppliments of lower floor's wetland, is favorable to improving the nitrogen and phosphorus removal effect of lower floor's wetland. By arranging the greenhouse 5, the upper wetland 6 and the lower wetland 7, the sewage treatment function of the upper wetland 6 is closed when the temperature is lower, and the greenhouse 5 and the upper wetland 6 play a certain anti-freezing, isolating and heat-insulating role for the lower wetland 7, so that the purification capacity of the sewage treatment system at low temperature is ensured.
The process flow of the embodiment is as follows: the sewage is treated by a grid 1 to remove larger suspended matters and floating matters in the water, so that the serious blockage of a wetland pool is prevented, the sewage enters a biochemical pool 2 to primarily degrade COD (chemical oxygen demand) in the sewage by using microorganisms, then enters a sedimentation pool 3 to carry out sludge sedimentation on the sludge so as to prevent the blockage of the wetland pool, and supernatant in the sedimentation pool enters a water distribution pool 4; when the temperature is suitable for seasons such as spring, summer, autumn, early winter and the like, the valve of the distribution pipe 23 is closed, the valve of the water inlet pipe is opened, the water drop pipe 9 is opened, sewage in the distribution tank 4 enters the horizontal undercurrent type wetland 13 of the upper layer wetland 6 through the water inlet pipe to flow in an S shape, and the horizontal undercurrent type wetland 13 has higher nitrogen removal capacity and organic matter removal capacity; then sewage enters the vertical subsurface wetland 14 through the partition plate 22, the vertical subsurface wetland 14 has high phosphorus removal capability, then the sewage falls into the transition tank 10 through the water drop pipe 9, the oxygen content in the sewage is improved in the falling process, the phenomenon of oxygen deficiency of the lower-layer wetland is avoided, the nitrogen and phosphorus removal capability is improved, the phosphorus and nitrogen removal effect is further enhanced by the transition tank 10, the sewage in the transition tank 10 enters the horizontal subsurface wetland 13 of the lower-layer wetland 7 through a connecting pipe, the connecting pipe is provided with a one-way valve 12, and only the sewage in the transition tank 10 is allowed to enter the lower-layer wetland 7; the horizontal subsurface wetland 13 of the lower wetland 7 further enhances the denitrification and organic matter removal level, and then the sewage enters the vertical subsurface wetland 14 of the lower wetland 7 through the partition plate 22 to further enhance the dephosphorization level, and finally the purified water enters the water collecting tank 11.
When the nitrogen and phosphorus removal level is lower in the deep winter and is lower than that in the high-temperature season, the water inlet pipe and the water drop pipe 9 are closed, the distribution pipe 23 is opened, sewage falls into the transition tank 10 from the distribution tank 4, the dissolved oxygen in the sewage is increased in the falling process, the phosphorus and nitrogen removal level is further increased, the transition tank 10 performs primary nitrogen and phosphorus removal on the sewage and sends the sewage into the horizontal undercurrent type wetland 13 of the lower layer wetland 7 to strengthen the nitrogen and phosphorus removal level, the sewage enters the vertical undercurrent type wetland 14 of the lower layer wetland 7 through the partition plate 22 to strengthen the phosphorus and phosphorus removal level, and finally purified water enters the water collecting tank 11.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.
Claims (10)
1. The utility model provides a compound constructed wetland sewage treatment system which characterized in that: the system comprises a grid, a biochemical pool, a sedimentation pool, a water distribution pool and a wetland pool which are connected in sequence, and also comprises a greenhouse, wherein the wetland pool is positioned below the ground surface in the greenhouse; the wetland pond includes upper wetland and lower floor's wetland, be provided with the interlayer of prevention of seepage water between upper wetland and the lower floor's wetland, the one end of upper wetland is linked together through inlet tube and distribution tank, the other end of upper wetland is connected with the drop pipe, the transition pond is installed to drop pipe below, the one end that the transition pond is close to the wetland pond is linked together through connecting pipe and lower floor's wetland, the one end that the transition pond was kept away from to lower floor's wetland has the catch basin through going out water piping connection, install the check valve on the connecting pipe between transition pond and the lower floor's wetland.
2. The composite type artificial wetland sewage treatment system of claim 1, which is characterized in that: the upper layer wetland and the lower layer wetland both comprise a horizontal undercurrent type wetland and a vertical undercurrent type wetland which are arranged in series, the structures of the horizontal undercurrent type wetland and the vertical undercurrent type wetland are respectively the same, wherein the horizontal undercurrent type wetland of the upper layer wetland is communicated with the water distribution tank, and the vertical undercurrent type wetland of the lower layer wetland is communicated with the water collection tank.
3. The composite type artificial wetland sewage treatment system of claim 2, which is characterized in that: the horizontal undercurrent type wetland comprises a large block layer, a single particle layer and a mixed particle layer which are sequentially arranged from top to bottom, and the top of the horizontal undercurrent type wetland on the upper layer of the wetland is provided with a soil layer; wetland plants are planted in the soil layer, the filler of the large-block layer can be selected from one of zeolite, vermiculite, limestone and blast furnace slag, the particle size of the filler of the large-block layer is 40-60mm, and the filler of the single-particle layer is shale with the particle size of 25-35 mm.
4. The composite type artificial wetland sewage treatment system according to claim 3, which is characterized in that: the horizontal undercurrent type wetland and the vertical undercurrent type wetland are separated by a vertically arranged partition plate, the top end of the partition plate of the upper layer wetland is arranged at an interval with the soil layer, and the top end of the partition plate of the lower layer wetland is arranged at an interval with the interlayer.
5. The composite type artificial wetland sewage treatment system according to claim 4, which is characterized in that: install the overhead gage that the level set up between bold layer and the single grained layer, install the lower baffle that the level set up between single grained layer and the mixed grained layer, the equal fixed connection of one end of overhead gage and lower baffle is on the lateral wall of horizontal undercurrent type wetland, the equal fixed connection of the other end of overhead gage and lower baffle is on the division board, the limbers has been seted up to the one end that the overhead gage is close to the distribution tank, the limbers has also been seted up to the one end that the lower baffle is close to the division board, the inlet tube is linked together with the mixed grained layer.
6. The composite type artificial wetland sewage treatment system according to claim 5, which is characterized in that: one end of the distribution pool close to the lower-layer wetland is fixedly connected with a distribution pipe, the distribution pipe penetrates through the lower-layer wetland and extends to the upper part of the transition pool, a valve is arranged on the distribution pipe between the distribution pool and the lower-layer wetland, and a gravel layer is paved in the transition pool.
7. The composite type artificial wetland sewage treatment system of claim 2, which is characterized in that: the vertical subsurface flow type wetland comprises an upper baffle plate and a lower baffle plate which are vertically arranged, the upper baffle plate and the lower baffle plate are alternately arranged in the vertical subsurface flow type wetland, the bottom end of the upper baffle plate and the bottom of the vertical subsurface flow type wetland are arranged at intervals, the bottom end of the upper baffle plate is fixedly connected with an inclined baffle plate which is obliquely arranged, the top end of the lower baffle plate and the top of the vertical subsurface flow type wetland are arranged at intervals, the height of the lower baffle plate is sequentially reduced along the water flow direction, a soil layer is also arranged at the top of the vertical subsurface flow type wetland, and wetland plants are planted in the soil layer.
8. The composite type artificial wetland sewage treatment system of claim 7, which is characterized in that: the vertical subsurface flow type wetland is divided into a plurality of treatment cavities by the upper baffle plates and the lower baffle plates which are alternately arranged, and fillers are respectively filled in each treatment cavity.
9. The composite type artificial wetland sewage treatment system of claim 1, which is characterized in that: the water inlet pipe is provided with a valve, and the end part of the water dropping pipe is provided with a cover.
10. The composite type artificial wetland sewage treatment system according to claim 3 or 7, which is characterized in that: the wetland plants comprise cress, water hyacinth, calamus, reed, cattail and wild rice stem.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922128980.4U CN211896514U (en) | 2019-12-03 | 2019-12-03 | Compound constructed wetland sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922128980.4U CN211896514U (en) | 2019-12-03 | 2019-12-03 | Compound constructed wetland sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716020A (en) * | 2022-04-28 | 2022-07-08 | 西安建筑科技大学 | Sewage treatment system based on anaerobic-aerobic double-layer artificial wetland |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716020A (en) * | 2022-04-28 | 2022-07-08 | 西安建筑科技大学 | Sewage treatment system based on anaerobic-aerobic double-layer artificial wetland |
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