CN214990566U - Composite functional wetland combination device for treating drainage basin characteristic pollutants - Google Patents
Composite functional wetland combination device for treating drainage basin characteristic pollutants Download PDFInfo
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- CN214990566U CN214990566U CN202022063278.7U CN202022063278U CN214990566U CN 214990566 U CN214990566 U CN 214990566U CN 202022063278 U CN202022063278 U CN 202022063278U CN 214990566 U CN214990566 U CN 214990566U
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Abstract
The utility model discloses a complex function type wetland composite set for watershed characteristic pollutant is administered, including intensive pond unit, perpendicular undercurrent wetland unit, horizontal undercurrent wetland unit, surface current wetland unit, water catch bowl unit and backward flow unit, the backward flow unit is used for the emergent handling capacity of lift system and winter low temperature stable operation ability, the matrix is all filled to the inside of intensive pond unit, perpendicular undercurrent wetland unit, horizontal undercurrent wetland unit and surface current wetland unit, the backward flow unit is used for opening the backward flow when the higher or low temperature efficiency of pollution load reduces the condition, effectively promotes the efficiency of getting rid of pollutant. The utility model discloses carry out the matrix according to the characteristic pollutant and compound, the plant community is preferred, the combination is found, carries out high-efficient purification to the characteristic pollutant, realizes water safety risk control, pollutes health risk and ecological safety risk that probably brings to watershed type characteristic thing, has fine risk control meaning.
Description
Technical Field
The utility model relates to a water treatment design technical field particularly, relates to a complex function type wetland composite set for basin characteristic pollutant is administered.
Background
While the water quality of the river basin in China is obviously improved, the concentration of the characteristic pollutants of the river basin and the lake water body is higher due to the characteristics of regions and industrial structures and the appearance of novel chemicals. For example, the background values of fluoride and heavy metal in the eternal river basin are high, the concentration of antibiotics in some rivers is relatively high, the background values of the ubiquitous polar pesticide substances are high, and the like. These substances not only produce chronic toxicological effects on aquatic organisms, but also enter human bodies through food chains, cause imbalance and imbalance of intestinal flora, and reduce human immunity. The wetland technology is an important means for restoring the watershed ecology, and is widely applied due to the technical, economic and ecological properties.
The characteristic pollutant is a substance which has the characteristics of drainage territory and regionality, is related to a regional industrial structure and is different from a conventional monitoring index. Heavy metals are ubiquitous in eight watershed water bodies in China. According to the statistical data analysis of the last decade, compared with foreign countries, the average value of the exposure concentration of 10 typical heavy metals in various watershed water bodies in China is generally higher. The method aims at the problem that the risk control research on heavy metal substances in the drainage basin is less, so that the wetland technology is used as an advanced treatment unit to treat the heavy metal wastewater, and the research and practice on wetland plants, matrixes, microorganisms, action mechanisms and the like are developed at home and abroad, but the heavy metal wastewater has high general concentration, and the risk control on the heavy metal with low concentration in the drainage basin cannot be directly utilized.
Organochlorine pesticides are typical persistent pollutants in the environment and are also a pollutant ubiquitous in drainage basins, the pollution prevention and control work of the persistent organic pollutants is highly emphasized in China, and the detection of the persistent organic pollutants is brought into a national environment monitoring system by the recent ecological environment ministry. Fluoride and the like have higher background values in some watershed environments, and the watershed ecological restoration technical means of wetland is used for controlling the risk substances in the watershed environments, so that the method is an effective countermeasure.
The wetland technical system is adopted to carry out risk control on the characteristic pollution of the drainage basin, is an important development direction and is bound to become a trend. The wetland technical system is complex and strong in inclusion, and has a certain removal effect on different characteristic pollutants, but the current research and design on the wetland technology are focused on the removal research on the conventional pollutants (COD, ammonia nitrogen, TN, TP and the like), and the risk control research on the characteristic pollution is less. The utility model provides a complex function type wetland composite set for basin characteristic pollutant is administered on the basis that conventional pollutant was got rid of, provides the technical parameter of characteristic pollutant risk control. In view of the related technical problems, no effective solution has been proposed at present.
SUMMERY OF THE UTILITY MODEL
To the problem among the correlation technique, the utility model provides a complex function type wetland composite set for basin characteristic pollutant is administered to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this:
a composite functional wetland combination device for treating watershed characteristic pollutants comprises an enhanced pond unit, a vertical subsurface flow wetland unit, a horizontal subsurface flow wetland unit, a surface flow wetland unit, a water collecting tank unit and a backflow unit, and is characterized in that the backflow unit is used for improving the emergency handling capacity and the low-temperature stable operation capacity in winter, matrixes are filled in the enhanced pond unit, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit, the backflow unit is used for starting backflow under the condition of higher pollution load or reduced low-temperature efficiency, and the removal efficiency of pollutants is effectively improved, and the composite functional wetland combination is as follows:
the combination is as follows: the vertical subsurface flow wetland unit-the horizontal subsurface flow wetland unit-the surface flow wetland unit;
combining two: the method comprises the following steps of (1) strengthening a pond unit, a vertical subsurface flow wetland unit and a horizontal subsurface flow wetland unit;
combining three components: the system comprises a horizontal subsurface flow wetland unit, a reinforced pond unit and a horizontal subsurface flow wetland unit.
Furthermore, the reinforced pond unit, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit, the surface flow wetland unit and the water collecting tank unit are of modular structures, and the modular structures are made of glass fiber reinforced plastic, PE or PP materials.
Furthermore, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit, the surface flow wetland unit and the reinforced pond unit are organically and efficiently integrated, and the purification potential of different wetland types and reinforced ponds is fully exerted through multi-stage series-parallel connection and multi-combination space structure and function optimization, so that the target pollutants are efficiently removed.
Furthermore, the bottom of the strengthening pond unit is provided with artificial water purification grass, submerged plants and an aeration device, the artificial water purification grass is used for allowing microorganisms to adhere and grow and has the functions of allelopathy and algae inhibition, the artificial water purification grass and the submerged plants are arranged in a crossed mode, and when the dissolved oxygen in the water body is extremely low, the aeration device increases the dissolved oxygen in the water body through aeration, so that the purification efficiency is improved.
Further, the matrix is filled with different target contaminants.
Furthermore, in the aspect of planting the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit, emergent aquatic plants are mainly selected for planting in a matched manner on the basis of the tolerance of wetland plants to characteristic pollutants and the filler-plant-microorganism comprehensive action effect and in combination with the purification capacity and landscape of a wetland plant system, and the submerged plant community is planted at a position suitable for water depth of the reinforced pond unit.
Furthermore, the units of the combined functional wetland combination are combined in a series connection mode, the vertical subsurface flow wetland unit is of an up-flow type, and the vertical subsurface flow wetland unit fully utilizes the intercepting and filtering function and the adsorption performance of a wetland matrix, reduces the concentration of pollutants and protects wetland plants.
Furthermore, the reinforced pond unit can be used for carrying out suspended matter precipitation, oxygenation and water quality regulation on a water body with poor transparency, an anoxic water body or a water body with large water quality fluctuation.
Furthermore, the combination is also provided with a liquid level difference, the liquid level difference enables water to form self-flow, the energy consumption is reduced, drop aeration oxygenation is increased, the dissolved oxygen content in the wetland system is improved, the growth of aerobic microorganisms is promoted, and the degradation capability of organic matters and ammonia nitrogen in the wetland system is improved.
The utility model has the advantages that: the utility model discloses can carry out the matrix according to the characteristic pollutant and compound, the plant community is preferred, the combination is found, is not less than under the prerequisite of current wetland treatment efficiency maintaining conventional pollutant index, carries out high-efficient purification to the characteristic pollutant, realizes water safety risk control, has very high practical value and spreading value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a combined structure of a combined functional wetland combined device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention;
fig. 2 is a schematic structural diagram of a second combined functional wetland combination device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention;
fig. 3 is a schematic diagram of a combined three-structure of a combined functional wetland combined device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention;
fig. 4 is a schematic structural view of a vertical subsurface wetland unit of the combined functional wetland combination device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention;
fig. 5 is a schematic structural view of a horizontal subsurface wetland unit of the combined functional wetland combination device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention;
fig. 6 is a schematic structural view of a surface flow wetland unit of the combined functional wetland combination device for treating the characteristic pollutants in the drainage basin according to the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
According to the utility model discloses an embodiment provides a complex function type wetland composite set for basin characteristic pollutant is administered.
As shown in fig. 1-6, according to the utility model discloses a complex function type wetland composite set for watershed characteristic pollutant is administered, including intensive pond unit, vertical underflow wetland unit, horizontal underflow wetland unit, surface current wetland unit, water catch bowl unit and backward flow unit, its characterized in that, the backward flow unit is used for promoting the emergent handling capacity of system and winter low temperature stable operation ability, the inside of intensive pond unit, vertical underflow wetland unit, horizontal underflow wetland unit and surface current wetland unit all fills the matrix, the backward flow unit is used for opening the backward flow when the higher or low temperature efficiency of pollution load reduces the condition, effectively promotes the efficiency of getting rid of pollutant, complex function type wetland combination is as follows:
the combination is as follows: the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit are combined, oxygen-enriched micro-polluted water with relatively high concentration of characteristic pollutants is fed from the lower part of the vertical subsurface flow wetland unit, the water discharged from the upper part automatically flows into the water inlet in the middle of the horizontal subsurface flow wetland unit, then automatically flows into the water inlet in the middle of the surface flow wetland unit from the water outlet in the lower part of the horizontal subsurface flow wetland unit, the water collecting tank unit is arranged at the tail end of the surface flow wetland unit and is discharged from the water outlet in the lower part. The backflow unit pumps water from the water outlet of the water collecting tank unit and flows back to the water inlet pipeline of the vertical subsurface flow wetland unit.
Combining two: the reinforced pond unit, the vertical subsurface flow wetland unit and the horizontal subsurface flow wetland unit are combined, wherein the combined unit is used for anoxic micro-polluted water bodies with relatively high characteristic pollutant concentration, water is fed from the lower part of the reinforced pond unit, water discharged from the upper part of the reinforced pond unit automatically flows into a water inlet at the lower part of the vertical subsurface flow wetland unit, water discharged from the upper part of the vertical subsurface flow wetland unit automatically flows into a water inlet at the middle part of the horizontal subsurface flow wetland unit, the water collecting tank unit is arranged at the tail end of the horizontal subsurface flow wetland unit and is discharged from a water outlet at the lower part, and the backflow unit pumps water from a water outlet of the water collecting tank unit and flows back to a water inlet pipeline of the reinforced pond unit.
Combining three components: the horizontal subsurface flow wetland unit, the reinforced pond unit and the horizontal subsurface flow wetland unit are combined, the combined unit is suitable for micro-polluted water bodies with relatively low characteristic pollutant concentration, water is fed from the middle of the horizontal subsurface flow wetland unit, water discharged from the lower part of the horizontal subsurface flow wetland unit automatically flows into a water inlet at the lower part of the reinforced pond unit, then automatically flows into a water inlet at the middle of the secondary horizontal subsurface flow wetland unit from a water outlet at the middle of the reinforced pond unit, the water collecting tank unit is arranged at the tail end of the horizontal subsurface flow wetland unit and is discharged from a water outlet at the lower part, and the backflow unit pumps water from a water outlet of the water collecting tank unit and flows back to a water inlet pipeline of the horizontal subsurface flow wetland unit.
The utility model discloses each functional unit's packing matrix condition is as follows:
the reinforced pond units are internally provided with artificial water purification grass (1m long by 1m high) at intervals of 1m, and are matched with pioneer seeds of submerged plants. The height of the artificial water purification grass can be properly adjusted according to the actual water depth.
The vertical subsurface wetland unit is filled with 100cm of composite filler (volcanic rock, activated zeolite and biological ceramsite combined matrix with the grain diameter of 10-20mm in a ratio of 1:1: 1), and a 20cm gravel layer is laid on the upper layer for planting plants;
filling composite filler (volcanic, activated zeolite and biological ceramsite combined matrix with the grain diameter of 10-20mm in a ratio of 1:1: 1) 50cm in the horizontal subsurface wetland unit, and laying a gravel layer with the grain diameter of 20cm on the upper layer for planting plants;
the surface flow wetland unit is filled with gravels with the filling height of 50cm, and the water surface of 20cm is kept on the gravel layer.
The box bodies of the reinforced pond unit, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit, the surface flow wetland unit and the water collecting tank unit are of modular structures, and the modular structures are made of glass fiber reinforced plastic, PE or PP materials.
The modular structure of the utility model provides a size length width deep proportion is 1:1:2, designs into modular unit, and every modular unit is intake and is divided equally into upper, middle and lower three-layer, and every layer sets up three water inlet and delivery port, and every water inlet and delivery port all are furnished with a valve and a flowmeter, modular unit's inside is provided with water distributor, aeration pipe support and aeration pipe.
The vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit, the surface flow wetland unit and the reinforced pond unit are organically and efficiently integrated, and the purification potential of different wetland types and reinforced ponds is fully exerted through multi-stage series-parallel connection and multi-combination space structure and function optimization, so that the target pollutants are efficiently removed.
The bottom of the strengthening pond unit is provided with artificial water purification grass, submerged plants and an aeration device, the artificial water purification grass is used for allowing microorganisms to adhere and grow and has the functions of chemical sensing and algae inhibition, the artificial water purification grass and the submerged plants are arranged in a cross mode, and when the dissolved oxygen in the water body is extremely low, the aeration device increases the dissolved oxygen in the water body through aeration, so that the purification efficiency is improved.
The artificial water purification grass of the embodiment of the utility model has the functions of weakening the peripheral flow velocity of the water grass, adsorbing partial suspended matters, inhibiting the growth of algae by allelopathy, enhancing the transparency, and reducing pollutants such as heavy metals carried on the surface of the suspended solid matters; the submerged plant can improve the water quality purification capacity and can supplement dissolved oxygen for the water body. The submerged plants such as hydrilla verticillata and rotala crispus are matched with the potamogeton crispus for planting and purifying, and the planting and purifying effect is good, and the stain resistance is strong.
The matrix is filled with different target contaminants.
The embodiment of the utility model provides a to the characteristics that characteristic pollutant is various, the nature difference is big, difficult getting rid of, combine matrix filler performance complementary, the comprehensive consideration matrix filler all has stable removal effect and the difficult jam of filler to different target pollutants, the mixed filler of preferred volcanic rock, biological haydite, activated zeolite with the volume ratio 1:1:1 complex.
In the aspect of planting the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit, emergent aquatic plants are mainly selected for matching planting in the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit based on the tolerance of wetland plants to characteristic pollutants and the filler-plant-microorganism comprehensive action effect, and the purification capability and landscape of a wetland plant system are combined, and the submerged plant community is planted at a position with proper water depth in the strengthened pond unit.
The embodiment of the utility model provides a plant unit includes emergent aquatic plant, floating leaf plant and submerged plant. In order to maintain the biological diversity and the efficient organic matter removal capability of wetland plants and N, P removal capability, emergent aquatic plants and submerged plants are planted in a matching way, in order to be suitable for the growth of different wetland plants, the emergent aquatic plants and the submerged plants are combined according to requirements, different plant communities are designed in different types of unit structures, and the diversity of aquatic plants is enrichedAnd the ecological benefit and the environmental benefit are realized, and the landscape beautifying function is realized. For example, submerged plants such as hydrilla verticillata, sowthistle, potamogeton pectinatus and the like are preferably selected to form surface flow wetland unit aquatic plant communities, and the planting density of the submerged plants is 10-20 clusters/m2(ii) a The water body with poor water quality is preferably submerged plants such as hydrilla verticillata, eel algae and the like, the water body with good water quality is preferably submerged plants such as goldfish algae and watermifoil algae and the like, and an ecological floating bed (emergent aquatic plant) is matched to form an enhanced pond unit aquatic plant community, the planting density of the submerged plants is 15-25 clusters/m2The planting density of the ecological floating bed plants is 9-16 plants/m2(ii) a Preferably, emergent aquatic plants such as calamus, rush, cattail, allium mongolicum and the like form submerged wetland unit aquatic plant community reinforced purification COD, and the planting density is 20-30 plants/m2(ii) a Preferably, emergent aquatic plants such as reed, calamus, wild rice, canna, red-knees and the like are selected to form submerged wetland unit aquatic plant community for strengthening and purifying nitrogen, and the planting density is 15-25 plants/m2(ii) a Preferably, emergent aquatic plants such as reed, canna, calamus flavus, cattail, wild rice, calamus and the like form the submerged wetland unit aquatic plant community reinforced purification phosphorus, and the planting density is 15-25 plants/m2(ii) a One or more of the plants are selected according to the use requirements.
The units of the composite functional wetland combination are combined in series, the vertical subsurface flow wetland unit is of an up-flow type, and the vertical subsurface flow wetland unit fully utilizes the intercepting and filtering function and the adsorption performance of a wetland matrix to reduce the concentration of pollutants and protect wetland plants.
And for the water body with poor transparency, the anoxic water body or the water body with large water quality fluctuation, the reinforced pond unit is used for carrying out suspended matter precipitation, oxygenation and water quality regulation.
The embodiment of the utility model provides a packing matrix according to the quality of water characteristics of intaking (if contain pollutants such as heavy metal, fluoride, exposure risk factor) and play water quality of water requirement, filling matrix alternative packing like filler such as active carbon, activated zeolite, fly ash, slag, volcanic rock, biological haydite, the requirement is filled the matrix and needs to satisfy the gradation requirement. The volcanic rock, the activated zeolite and the biological ceramsite combined matrix with the proportion of 1:1:1 are preferably selected to form a comprehensive purification module for Cu, Hg, fluoride and organochlorine pesticide substances.
The assembly is also provided with a liquid level difference, the liquid level difference enables water to form self-flow, the energy consumption is reduced, drop aeration oxygenation is increased, the dissolved oxygen content in the wetland system is improved, the growth of aerobic microorganisms is promoted, and the degradation capability of organic matters and ammonia nitrogen in the wetland system is improved.
The oxygen deficiency or anaerobic environment formed by the lower part of the vertical subsurface flow wetland unit in the embodiment of the utility model is beneficial to nitrogen and phosphorus removal.
The utility model adopts the volcanic rock, activated zeolite and biological ceramsite composite matrix with the optimal ratio of 1:1:1, the hydraulic retention time is 1d, and the hydraulic load is 0.467m3/(m2D), under the condition that the concentration of Cu in inlet water is 0.8-10.0mg/L, Hg and the concentration is 8.03-43.0ug/L, the removal rate of Cu and Hg of the three combinations can be stabilized to be more than 90 percent, so that the combination is optimal and is obviously superior to the removal efficiency (70 percent at most) of the conventional wetland (gravel and soil); the hydraulic retention time is 2d, and the hydraulic load is 0.233m3/(m2D), under the conditions that the concentration of the inlet water F is 0.5-2.0mg/L and the concentration of the inlet water chlorpyrifos is 0.5-2.0mg/L, the removal rate of the three combinations to the F and the chlorpyrifos can be stabilized to be more than 80 percent, so that the combination is optimal, and the water body safety risk control target can be realized.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A composite functional wetland combination device for treating watershed characteristic pollutants comprises an enhanced pond unit, a vertical subsurface flow wetland unit, a horizontal subsurface flow wetland unit, a surface flow wetland unit, a water collecting tank unit and a backflow unit, and is characterized in that the backflow unit is used for improving the emergency handling capacity and the low-temperature stable operation capacity in winter, matrixes are filled in the enhanced pond unit, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit and the surface flow wetland unit, the backflow unit is used for starting backflow under the condition of higher pollution load or reduced low-temperature efficiency, and the removal efficiency of pollutants is effectively improved, and the composite functional wetland combination is as follows:
the combination is as follows: the vertical subsurface flow wetland unit-the horizontal subsurface flow wetland unit-the surface flow wetland unit;
combining two: the method comprises the following steps of (1) strengthening a pond unit, a vertical subsurface flow wetland unit and a horizontal subsurface flow wetland unit;
combining three components: the system comprises a horizontal subsurface flow wetland unit, a reinforced pond unit and a horizontal subsurface flow wetland unit.
2. The complex functional wetland combination device for treating the watershed characteristic pollutants according to claim 1, wherein the reinforced pond unit, the vertical subsurface flow wetland unit, the horizontal subsurface flow wetland unit, the surface flow wetland unit and the water collecting tank unit are of modular structures, and the modular structures are made of glass fiber reinforced plastic, PE or PP materials.
3. The combined functional wetland combined device for treating the watershed characteristic pollutants according to claim 1, characterized in that the vertical subsurface wetland unit, the horizontal subsurface wetland unit, the surface flow wetland unit and the reinforced pond unit are organically and efficiently integrated, and the purification potential of different wetland types and reinforced ponds is fully exerted through multi-stage series-parallel connection and multi-combination space structure and function optimization, so that the target pollutants are efficiently removed.
4. The wetland combination unit of claim 1, wherein the bottom of the reinforced pond unit is provided with artificial clean water grasses, submerged plants and an aeration device, the artificial clean water grasses are used for the attachment and growth of microorganisms and have the functions of allelopathy and algae inhibition, the artificial clean water grasses and the submerged plants are arranged in a crossed manner, and the aeration device increases the dissolved oxygen in the water body by aeration when the dissolved oxygen in the water body is extremely low, so that the purification efficiency is improved.
5. The complex functional wetland combination unit for remediation of watershed characteristic pollutants as claimed in claim 1, wherein the substrate is filled with different target pollutants.
6. The combined functional wetland combination device for treating the watershed characteristic pollutants according to claim 1, wherein in the planting aspect of the vertical subsurface wetland unit, the horizontal subsurface wetland unit and the surface flow wetland unit, emergent aquatic plants are mainly selected for planting in a matched manner on the basis of the tolerance of wetland plants to the characteristic pollutants and the filler-plant-microorganism combined action effect and the purification capability and landscape performance of a wetland plant system, and the submerged plant community is planted at a position suitable for water depth of the reinforced pond unit.
7. The combined functional wetland combination device for treating the characteristic pollutants in the drainage basin as claimed in claim 1, wherein the units of the combined functional wetland combination are combined in series, the vertical subsurface wetland unit is of an up-flow type, and the vertical subsurface wetland unit makes full use of the intercepting and filtering function and the adsorption performance of a wetland substrate to reduce the concentration of the pollutants and protect wetland plants.
8. The complex function type wetland combination device for treating the watershed characteristic pollutants as claimed in claim 1, wherein the reinforced pond units are used for performing suspended matter precipitation, oxygenation and water quality regulation on water bodies with poor transparency, anoxic water bodies or water bodies with large water quality fluctuation.
9. The combined functional wetland combination device for treating the watershed characteristic pollutants as claimed in claim 1, wherein the combination is further provided with a liquid level difference, and the liquid level difference enables water to flow automatically, reduces energy consumption, increases drop aeration oxygenation, improves dissolved oxygen content in a wetland system, promotes growth of aerobic microorganisms, and improves degradation capability of organic matters and ammonia nitrogen in the wetland system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022063278.7U CN214990566U (en) | 2020-09-20 | 2020-09-20 | Composite functional wetland combination device for treating drainage basin characteristic pollutants |
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| CN202022063278.7U CN214990566U (en) | 2020-09-20 | 2020-09-20 | Composite functional wetland combination device for treating drainage basin characteristic pollutants |
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