CN102531294A - All-terrain subsurface flow constructed wetland combination system and application thereof - Google Patents
All-terrain subsurface flow constructed wetland combination system and application thereof Download PDFInfo
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- CN102531294A CN102531294A CN2012100305890A CN201210030589A CN102531294A CN 102531294 A CN102531294 A CN 102531294A CN 2012100305890 A CN2012100305890 A CN 2012100305890A CN 201210030589 A CN201210030589 A CN 201210030589A CN 102531294 A CN102531294 A CN 102531294A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 239000011159 matrix material Substances 0.000 claims description 38
- 239000010865 sewage Substances 0.000 claims description 25
- 238000000746 purification Methods 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 241000684239 Canna x generalis Species 0.000 claims description 3
- 244000205574 Acorus calamus Species 0.000 claims description 2
- 235000011996 Calamus deerratus Nutrition 0.000 claims description 2
- 240000001398 Typha domingensis Species 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 14
- 239000011574 phosphorus Substances 0.000 abstract description 14
- 239000000758 substrate Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
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- 238000005202 decontamination Methods 0.000 description 5
- 230000003588 decontaminative effect Effects 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 4
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- 238000012851 eutrophication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
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- 241000721690 Lythrum salicaria Species 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention belongs to the technical field of environmental engineering, and relates to a subsurface flow constructed wetland combination system and the application of the system. The constructed wetland combination system comprises three wetland units (16, 17 and 18), wherein the three wetland units respectively comprise wetland unit frames (13, 14 and 15), water distribution pipes (1, 3 and 5), water collecting pipes (2, 4 and 6), a water inlet pipe (19), connecting pipes (20 and 21), a water outlet valve (7), a vertical water outlet pipe (8) and a siphon (9), wherein the wetland units (16, 17 and 18) are connected with one another by the water collecting pipes (2, 4 and 6) or the water distribution pipes (1, 3 and 5), the wetland units (16, 17 and 18) are internally filled with substrates (10, 11 and 12), and the three wetland units are vertically distributed in a gradually-falling shape. The system and the application of the system provided by the invention have the advantages of being high in the adaptability to terrain, better in nitrogen and phosphorus removal effect for a water body, hard to block, convenient in operation, maintenance and management, low in project capital construction cost and running cost and the like.
Description
Technical field
The invention belongs to field of environment engineering technology, relate to a kind of drowned flow artificial wet land combined system and application thereof.
Background technology
Because floor space is little, purification efficiency is high, subsurface constructed wetland is used widely in recent years.Current wetland is mainly by wetland matrix, plant and mikrobe, under various physics, chemistry and biological effect, polluted water body handled.Suspended substance in the water body, ammonia nitrogen, phosphorus etc. can adsorbed and hold back to the matrix of filling different-grain diameter, different varieties in the wetland unit; The various hygrophytes of plantation on the matrix are through harvesting over-ground part, pollutents such as the nitrogen that absorbs in the transfering plant process of growth, phosphorus, organism, heavy metal; Matrix and root system of plant surface attachment mikrobe can be degraded and transform all contaminations in the water body.
Existing current wetland is selected for use and still there are some problems in aspect such as redox state regulation and control in matrix.Wetland matrix filling mode generally adopts forward grating (the matrix particle diameter increases gradually) from the upper strata to the lower floor; Through behind the long-play; Mixing can appear in the matrix of different-grain diameter under current scour, influences the wetland penetrating quality, when matrix takes place to stop up, can't optionally change the outfit.Adopt non-woven fabrics to separate different-grain diameter matrix, though can solve matrix blended problem, non-woven fabrics possibly increase the probability that blockage problem appears in wetland, is necessary further to innovate wetland matrix and selects for use and collocation method.Mostly current wetland inside is anaerobic state, mainly relies on root system of plant to secrete oxygen, or by modes such as intermittent type water distribution, artificial oxygenations inner redox state is regulated and control.The regulation and control of wetland redox state help the further lifting of contaminant removal efficiency; With the denitrification process is example; Polluted water body helps the removal to nitrogen in the water body through aerobic-anaerobic state successively in artificial swamp, aerobic environment helps the nitrobacteria growth and breeding, promotes that ammonia nitrogen transforms to nitric nitrogen and nitrite nitrogen in the water body; Under the carbon source sufficiency, follow-up anaerobic environment then helps the denitrogenation process of denitrifying bacterium.But present most of current wetlands still can not provide relatively independent aerobic and anaerobic environment preferably, need innovate the regulation and control of wetland internal oxidation reduced state.
The top priority of river water body reparation is to block the xenobiotic pollutants input, yet after cutting dirty engineering construction, rainwash, sewage treatment plant tail water and interim water transfer etc. that the river course water recharging mainly relies on rainfall to bring lack the water recharging of stable cleaning.In addition, problems such as the cross flow of sewage draining exit sewage, rainwater row mouthful dry flow sewage discharging still possibly appear in the two sides, river course.To the water recharging problem, in view of the water yield, the tail water of sewage work's discharging can effectively replenish the water source as the city river landscape water body.Yet, from the water quality guarantee,, tail water just do not enter Landscape River as replenishing the water source if not carrying out advanced treatment, and this will make that the river water quality of eutrophication further worsens.According in the urban wastewater treatment firm pollutant emission standard (GB 18918-2002) about the regulation of one-level A emission standard, the highest permission emission concentration of total nitrogen, ammonia nitrogen and total phosphorus is respectively 15mg/L, 5mg/L and 0.5mg/L in the water outlet.Before sewage treatment plant tail water gets into the Landscape River water body, should carry out the advanced nitrogen dephosphorization to tail water through relevant water technology and handle.Full landform drowned flow artificial wet land combined system capital cost is low, and running maintenance is convenient, and is high to pollutant purification efficient, can also make up with view to combine, and can be used for tail water and handle.For the sewage draining exit of the scattered distribution in two sides, river course and rainwater row mouthful, also can use full landform drowned flow artificial wet land combined system, make full use of limited plot, two sides, river course, water treatment system is incorporated among the landscape construction of two sides.
Summary of the invention
The objective of the invention is to be directed against the defective of prior art and a kind of drowned flow artificial wet land combined system and application thereof that is applicable to the complex-terrain structure in the two sides, river course is provided.
Through the present invention; Make the artificial swamp technology can be widely used in the eutrophication river ecological and administer, the sewage treatment plant tail water that enters river water body is carried out the advanced nitrogen dephosphorization handle, to the sewage draining exit of the scattered distribution in two sides, river course and the rainwater row effusive cross flow sewage of mouth and dry season sewage carry out dispersion treatment; Make full use of limited plot, two sides, river course; Water treatment system is incorporated among the landscape construction of two sides, block external source from the source and pollute input, ensure the progressively lifting of river water body water quality.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of drowned flow artificial wet land combined system; Comprise three wetland units; Described wetland unit comprises wetland unit framework, water distributor, header, water inlet pipe, pipe connecting, outlet valve, water outlet vertical tube and U trap; Link to each other through header or water distributor between described wetland unit, be filled with matrix in the said wetland unit, described three wetland unit vertical distribution are drop shape step by step.
Between described two adjacent wetland units, the difference of altitude of the wetland unit upper surface of back and the wetland unit upper surface of front is greater than zero and be less than or equal to the height of the wetland unit of front.
Be provided with the wetland unit framework in described first wetland unit, be filled with matrix in first wetland unit, described water inlet pipe links to each other with water distributor, and water distributor is arranged on the first wetland unit top, and described header is arranged on first wetland unit bottom;
Be provided with the wetland unit framework in described second wetland unit; The described matrix of filling in second wetland unit; Described pipe connecting connects header and water distributor, and described water distributor is arranged on second wetland unit bottom, and described header is arranged on the second wetland unit top;
Be provided with the wetland unit framework in described the 3rd wetland unit; The described matrix of filling in the 3rd wetland unit; Described pipe connecting connects header and water distributor, and described water distributor is arranged on the 3rd wetland unit top, and described header is arranged on the 3rd wetland unit bottom; Described outlet valve and described water outlet vertical tube link to each other with header, and described water outlet vertical tube end is connected with U trap.
The particle size range of described matrix is followed successively by 16-32mm, 8-16mm, 4-8mm from first wetland unit to the, three wetland units.
Described matrix is selected from the substrate material that zeolite, haydite, shale or slag etc. have strong denitrogenation dephosphorizing ability, and filling the degree of depth is the 80%-90% of wetland unit frame height.
Only fill a kind of matrix in described each wetland unit.
The hygrophyte of plantation is selected Canna generalis Bailey, iris, cattail, calamus, one or more among power flower, FENGCHECAO or the Lu Di etc. again for use in the described wetland unit, planting density 10-20 strain/square metre.
Full landform drowned flow artificial wet land combined system is made up of three grades of artificial swamp unit; Every grade of wetland unit comprises unit framework, matrix, water distributor, header; Adjacent two-stage wetland unit is discharged after water body is handled through wetland units at different levels one by one thereby guarantee to be processed through pipe connection.
Described each wetland unit height is 0.5-1.5m, the area of wetland unit, shape and two-layer between the discrepancy in elevation can be convenient to be applied in complex-terrains such as riverbank side slope according to concrete landform, gradient flexible design.According to the view needs, it is main that each wetland unit framework can adopt geomembrane to lay, and skeleton construction is the wetland framework of assisting, to reduce the manual workization vestige; Each wetland unit framework also can be selected the prefab of being convenient to disassembly and assembly for use.
The redox state of each wetland unit is followed successively by the aerobic-anaerobism-oxygen of holding concurrently from first wetland unit to the, three wetland units in the described artificial swamp combined system.
The 3rd wetland unit water outlet adopts the siphon design in the described full landform drowned flow artificial wet land combined system; Under syphonic effect; Gauging line can periodically rise and fall occur automatically in the 3rd wetland unit, and full water and anhydrous state alternately appear in the 3rd wetland unit.
Described first wetland unit to the, three wetland units, it is upper and lower, following that water (flow) direction is followed successively by.
According to the practical application needs, can make up organizing the drowned flow artificial wet land combined system that constitutes by three wetland units more.
A kind of above-mentioned drowned flow artificial wet land combined system is as the application of disposing of sewage, and it comprises following steps:
(I) sewage gets into the drowned flow artificial wet land combined system from water inlet pipe, is evenly distributed in first wetland unit through water distributor; Macrobead filling substrate in first wetland unit helps amputation macrobead suspended substance, and aerobic environment helps the generation and the organic removal of nitration reaction; Water body through first class purification after header flow into to connect;
(II) water body through first class purification is evenly distributed in second wetland unit in the pipe connecting through water distributor; Medium grain filling substrate in second wetland unit helps the further removal of suspended substance, and the absorption of phosphorus removal, and anaerobic environment helps the generation of denitrification.Water body through secondary purification after header flows into pipe connecting;
(III) water body through secondary purification is evenly distributed in the 3rd wetland unit in the pipe connecting through water distributor; Small-particle filling substrate in the 3rd wetland unit helps the degree of depth of suspended substance to be removed, and the absorption of phosphorus removal, and the oxygen environment of holding concurrently helps the further removal of organism and nitrogen; Water body, is discharged through U trap after header flow into the water outlet vertical tube through three grades of purifications.
Containing in nitrogen or the phosphor contaminant one or more in the sewage of described entering wetland, is to guarantee the long-acting operation of wetland, and the wetland influent quality should meet three grades of emission standards of regulation in the urban wastewater treatment firm pollutant emission standard (GB 18918-2002).
The suitable hydraulic load of described drowned flow artificial wet land combined system is 50-500mm/d.
The present invention has following beneficial effect
The vertical subsurface flow type artificial swamp of classics is broken the whole up into parts in the present invention; Multistagely have that certain height difference, water (flow) direction are different through making up, matrix species and the different vertical subsurface flow wetland unit of particle diameter; And in the end the one-level wetland unit is provided with the siphon discharging device; Make artificial swamp combined system internal oxidation reduced state diversified, specialization of purification function, and can adapt to various complex-terrains.The present invention is simple in structure, and can adapt to multiple topographical condition; Functional substrate material select for use and unique matrix allocation plan helps promoting wetland denitrogenation dephosphorizing ability, reduce wetland and the probability stopped up occurs; Relatively independent aerobic and anaerobic environment can be provided, help the lifting of denitrogenation ability; Utilize siphoning installation can be under the condition of no energy consumption auto-control wetland interior oxidation reduced state; Use full landform drowned flow artificial wet land combined system, can make full use of limited plot, two sides, river course, water treatment and river course view are improved combination.
Description of drawings
Fig. 1 is a full landform drowned flow artificial wet land combined system structural representation in the embodiment of the invention.
Embodiment
Below in conjunction with specific embodiment, further specify the present invention.A kind of full landform drowned flow artificial wet land combined system that is used for the river water reparation, as shown in Figure 1, comprise wetland unit framework 13,14; 15, matrix 10,11, and 12, water distributor 1,3; 5, header 2,4, and 6, water inlet pipe 19, pipe connecting 20,21, outlet valve 7, water outlet vertical tube 8, U trap 9.
Be provided with in first wetland unit 16 in wetland unit framework 13, the first wetland units 16 and be filled with matrix 10,, water inlet pipe 19 links to each other with water distributor 1, and water distributor 1 is arranged on first wetland unit, 16 tops, and header 2 is arranged on first wetland unit, 16 bottoms; Be provided with wetland unit framework 14 in second wetland unit 17; The described matrix 11 of filling in second wetland unit 17; Pipe connecting 20 connects header 2 and water distributor 3, and water distributor 3 is arranged on second wetland unit, 17 bottoms, and header 4 is arranged on second wetland unit, 17 tops; Be provided with filling matrix 12 in wetland unit framework 15, the three wetland units 18 in the 3rd wetland unit 18, pipe connecting 21 connects header 4 and water distributor 5, and water distributor 5 is arranged on the 3rd wetland unit 18 tops, and header 6 is arranged on the 3rd wetland unit 18 bottoms; Outlet valve 7 and described water outlet vertical tube 8 link to each other with header 6, and water outlet vertical tube 8 ends are connected with U trap 9.
In preferred embodiment of the present invention; Full landform drowned flow artificial wet land combined system is made up of three grades of artificial swamp unit; Every grade of wetland unit comprises unit framework, matrix, water distributor, header; Adjacent two-stage wetland unit is discharged after water body is handled through wetland units at different levels one by one thereby guarantee to be processed through pipe connection.
Full landform drowned flow artificial wet land combined system is made up of three independent wetland units that adopt split-type structural; Can according to the area of concrete landform, each wetland unit of gradient flexible design, shape and two-layer between the discrepancy in elevation, can be applicable to complex-terrains such as riverbank side slope.According to the view needs, it is main that each wetland unit framework 13,14,15 can adopt geomembrane to lay, and skeleton construction is the framework of assisting, to reduce the manual workization vestige; Each wetland unit framework 13,14,15 also can be selected the prefab of being convenient to disassembly and assembly for use.The wetland unit framework is spliced by the PVC prefab in the present embodiment, and length is 50cm, and the difference of altitude between adjacent two wetland unit upper surfaces is 25cm.
The matrix 10,11,12 that each wetland unit is filled in the full landform drowned flow artificial wet land combined system is single particle size; And the particle diameter of institute's filling substrate 10,11,12 diminishes from first wetland unit to the, three wetland units gradually; Size is followed successively by 10-20mm, 8-16mm, 4-8mm; Fill the degree of depth and be 45cm, first wetland unit to the, three wetland unit stromal surface are planted Canna generalis Bailey, Spiked Loosestrife, three kinds of hygrophytes of floral leaf Lu Di successively, planting density be the 10-20 strain/square metre.Be different from the filling mode that adopts the grade grating,, can effectively avoid the mixing of size fractionated matrix in the operational process, improve removal efficient, lower the probability that obstruction appears in wetland suspended substance owing to the matrix of each grade is disperseed to be filled into three wetland units.
The matrix 10,11,12 that each wetland unit is filled in the full landform drowned flow artificial wet land combined system is selected zeolite, haydite and shale successively for use; Each wetland unit is only filled a kind of material; Zeolite is mainly used in the ammonia nitrogen of removing in the water body; Haydite is mainly used in the phosphorus of removing in the water body, and porous shale is mainly used in the further removal to water body nitrogen, phosphorus.
Full landform drowned flow artificial wet land combined system is through the setting of water distributor 1,3,5 and header 2,4,6; Control wet land system water flow inside direction; It is upper and lower, following that the water (flow) direction of first to the 3rd wetland unit is followed successively by; Make that the redox state of each wetland unit is diversified, first to the 3rd wetland unit is followed successively by the aerobic-anaerobism-oxygen of holding concurrently.
The 3rd wetland unit can pass through outlet valve 7 from the 3rd wetland unit lower end water outlet in the full landform drowned flow artificial wet land combined system, also can be through water outlet vertical tube 8 from the upper end water outlet of the 3rd wetland unit.In addition, when water outlet vertical tube 8 rear ends were connected to U trap 9, when closing outlet valve 7, under syphonic effect, gauging line can periodically rise and fall occur automatically in the 3rd wetland unit, and full water and anhydrous state alternately appear in the 3rd wetland unit.During the wetland operation, open outlet valve 7, it is main being regulated to this unit redox state with good oxygen condition from the 3rd wetland unit lower end water outlet; Close outlet valve 7, it is main this unit redox state being regulated to anaerobic state from the 8 upper end water outlets of water outlet vertical tube; When adding siphoning installation, the anaerobic and aerobic state alternately appears in the 3rd wetland unit.In the present embodiment, wetland unit 3 water valves 7 cut out, and have installed U trap 9 behind the water outlet vertical tube 8 additional, and after 3 wetland units in full landform drowned flow artificial wet land combined system were handled, water body flowed out from U trap 9 lower ends.The redox state of each wetland unit is followed successively by the aerobic-anaerobism-oxygen of holding concurrently from first wetland unit to the, three wetland units in the artificial swamp combined system.
A kind of above-mentioned drowned flow artificial wet land combined system comprises following steps as the application of disposing of sewage:
(I) sewage gets into the drowned flow artificial wet land combined system from water inlet pipe 19, is evenly distributed in first wetland unit 16 through water distributor 1; Macrobead filling substrate 10 in first wetland unit 16 helps amputation macrobead suspended substance, and aerobic environment helps the generation and the organic removal of nitration reaction; Water body through first class purification after header 2 flows into pipe connectings 20;
(II) water body through first class purification is evenly distributed in second wetland unit 17 in the pipe connecting 20 through water distributor 3; Medium grain filling substrate 11 in second wetland unit 17 helps the further removal of suspended substance, and the absorption of phosphorus removal, and anaerobic environment helps the generation of denitrification; Water body through secondary purification after header 4 flows into pipe connectings 21;
(III) water body through secondary purification is evenly distributed in the 3rd wetland unit 18 in the pipe connecting 21 through water distributor 5; Small-particle filling substrate 12 in the 3rd wetland unit 18 helps the degree of depth of suspended substance to be removed, and the absorption of phosphorus removal, and the oxygen environment of holding concurrently helps the further removal of organism and nitrogen; Water body, is discharged through U trap 9 after header 6 flow into water outlet vertical tube 8 through three grades of purifications.
Wherein, first wetland unit to the, three wetland units, it is upper and lower, following that water (flow) direction is followed successively by.
The present invention has obtained effect preferably in the practical implementation process.Following table 1 and table 2 are to be under the condition of 100mm/d at hydraulic load, in the implementation process of the present invention to the decontamination effect improving of sewage and sewage treatment plant tail water.
Table 1 is the decontamination effect improving of the embodiment of the invention to nitrogen, phosphorus in the sewage:
Table 1
Table 2 is the decontamination effect improving to nitrogen, phosphorus in the sewage treatment plant tail water:
Table 2
Can know that by The above results the present invention has certain decontamination effect improving to the former glassware for drinking water of sewage, but pretreatment unit such as best preposition aeration when being used for the former water treatment of sewage; The present invention all has decontamination effect improving preferably to nitrogen, phosphorus in the sewage treatment plant tail water, and water outlet total phosphorus and ammonia nitrogen concentration can reach or be superior to " water environment quality standard " (GB3838-2002) V class standard.
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. drowned flow artificial wet land combined system, it is characterized in that: comprise three wetland units (16,17,18), described wetland unit comprises wetland unit framework (13; 14,15), water distributor (1,3,5), header (2,4; 6), water inlet pipe (19), pipe connecting (20,21), outlet valve (7), water outlet vertical tube (8) and U trap (9), between described wetland unit (16,17,18) through header (2; 4,6) or water distributor (1,3,5) link to each other said wetland unit (16; 17,18) be filled with matrix (10,11,12) in, described three wetland unit vertical distribution are drop shape step by step.
2. drowned flow artificial wet land combined system according to claim 1; It is characterized in that: between described two adjacent wetland units, the difference of altitude of the wetland unit upper surface of back and the wetland unit upper surface of front is greater than zero and be less than or equal to the height of the wetland unit of front.
3. drowned flow artificial wet land combined system according to claim 1; It is characterized in that: be provided with wetland unit framework (13) in described first wetland unit (16); Be filled with matrix (10) in first wetland unit (16); Described water inlet pipe (19) links to each other with water distributor (1), and water distributor (1) is arranged on first wetland unit (16) top, and described header (2) is arranged on first wetland unit (16) bottom;
Or be provided with wetland unit framework (14) in described second wetland unit (17); The described matrix of the interior filling of second wetland unit (17) (11); Described pipe connecting (20) connects header (2) and water distributor (3); Described water distributor (3) is arranged on second wetland unit (17) bottom, and described header (4) is arranged on second wetland unit (17) top;
Or be provided with wetland unit framework (15) in described the 3rd wetland unit (18); The described matrix of the interior filling of the 3rd wetland unit (18) (12); Described pipe connecting (21) connects header (4) and water distributor (5); Described water distributor (5) is arranged on the 3rd wetland unit (18) top, and described header (6) is arranged on the 3rd wetland unit (18) bottom; Described outlet valve (7) and described water outlet vertical tube (8) link to each other with header (6), and described water outlet vertical tube (8) end is connected with U trap (9).
4. drowned flow artificial wet land combined system according to claim 1 is characterized in that: the particle size range of described matrix is followed successively by 16-32mm, 8-16mm, 4-8mm from first wetland unit to the, three wetland units;
Or described matrix is selected from zeolite, haydite, shale or slag, and filling the degree of depth is the 80%-90% of wetland unit frame height;
Or only fill a kind of matrix in described each wetland unit.
5. drowned flow artificial wet land combined system according to claim 1; It is characterized in that: described wetland unit (16; 17; 18) hygrophyte of plantation is selected Canna generalis Bailey, iris, cattail, calamus, one or more of power flower, FENGCHECAO or Lu Dizhong again for use in, planting density 10-20 strain/square metre.
6. drowned flow artificial wet land combined system according to claim 1 is characterized in that: described each wetland unit height is 0.5-1.5m.
7. drowned flow artificial wet land combined system according to claim 1 is characterized in that: the redox state of each wetland unit is followed successively by the aerobic-anaerobism-oxygen of holding concurrently from first wetland unit to the, three wetland units in the described artificial swamp combined system.
8. drowned flow artificial wet land combined system according to claim 1 is characterized in that: described first wetland unit to the, three wetland units, it is upper and lower, following that water (flow) direction is followed successively by.
9. an aforesaid right requires among the 1-8 arbitrary described drowned flow artificial wet land combined system as the application of disposing of sewage.
10. application according to claim 9, it is characterized in that: it comprises following steps:
(I) sewage gets into the drowned flow artificial wet land combined system from water inlet pipe (19), is evenly distributed in first wetland unit (16) through water distributor (1); Water body through first class purification after header (2) flows into pipe connecting (20);
(II) water body through first class purification is evenly distributed in second wetland unit (17) through water distributor (3) in the pipe connecting (20); Water body through secondary purification after header (4) flows into pipe connecting (21);
(III) water body through secondary purification is evenly distributed in the 3rd wetland unit (18) through water distributor (5) in the pipe connecting (21); Water body, is discharged through U trap (9) after header (6) flow into water outlet vertical tube (8) through three grades of purifications.
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| CN104773914A (en) * | 2015-04-01 | 2015-07-15 | 东南大学 | Collecting and treating device for rural disordered-emission sewage |
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| CN105967339A (en) * | 2016-06-24 | 2016-09-28 | 中国科学院亚热带农业生态研究所 | Method and device for ecological pond purification treatment of heavy metal-polluted irrigation water |
| CN105967339B (en) * | 2016-06-24 | 2019-03-08 | 中国科学院亚热带农业生态研究所 | A method and device for purifying an ecological pond of heavy metal polluted irrigation water |
| CN106396264A (en) * | 2016-10-13 | 2017-02-15 | 华中科技大学 | Artificial wetland sewage treatment system capable of preventing blockage |
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| CN109778984A (en) * | 2019-03-11 | 2019-05-21 | 哈尔滨工业大学（深圳） | An urban road rainwater runoff collection and treatment system |
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| CN112374698A (en) * | 2020-11-12 | 2021-02-19 | 南昌鑫淼源环保有限公司 | Rural sewage comprehensive purification system |
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