CN104649419B - A kind of double horizontal drowned flow gas operated combined artificial wetland - Google Patents

A kind of double horizontal drowned flow gas operated combined artificial wetland Download PDF

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Publication number
CN104649419B
CN104649419B CN201510099852.5A CN201510099852A CN104649419B CN 104649419 B CN104649419 B CN 104649419B CN 201510099852 A CN201510099852 A CN 201510099852A CN 104649419 B CN104649419 B CN 104649419B
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upper strata
water
tank
layer
constructed wetland
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CN104649419A (en
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刘志军
熊芨
王硕
王超
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Wuhan Zhongke Aquatic Ecological Environment Co ltd
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WUHAN ZHONGKE HYDROBIOLOGY ENVIRONMENT ENGINEERING Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Botany (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a kind of double horizontal drowned flow gas operated combined artificial wetland, two-stage Horizontal subsurface constructed wetland is combined on vertical space, and in lower floor's wet land filler layer, implant airway；Wetland includes water outlet collecting-tank, water inlet collecting-tank, upper strata Horizontal subsurface constructed wetland unit, lower floor's Horizontal subsurface constructed wetland unit, middle mixing pit.Two-stage Horizontal subsurface constructed wetland is combined in vertical direction, the absorption of substrate, filtering efficiency is made to be fully used, it is effectively improved the wetland removal ability to many pollutants such as SS, N, P, COD, heavy metals, applied widely, can be used for the process of multiclass waste water.Airway is arranged along water (flow) direction, current can form negative pressure to inducing QI inner air tube, extraneous air is made to be more easy to be inhaled into compared with conventional vertical airway, the problem efficiently solving lower floor's wetland anoxia, promote lower floor's wetland disposal ability to pollutant especially ammonia nitrogen.

Description

A kind of double horizontal drowned flow gas operated combined artificial wetland
Technical field
The present invention relates to Wastewater Treatment by Constructed Wetlands technical field, be specifically related to a kind of double horizontal drowned flow gas operated multiple Close artificial swamp.
Technical background
Artificial Wetland Techniques originates from the seventies in last century, is in dirts such as land treatment systems, stabilization pond, biofilters Grow up on the basis of water technology a kind of artificial constructed and control main utilize natural detergent power Sewage disposal technology.Through years development, this technology is at sanitary sewage disposal, pollution of area source control, water body The fields such as reparation have had and have been widely applied.It is mainly by wetland plant, soil, filler, the thing of microorganism Reason, triple synergism chemical, biological purify sewage, have simple in construction, easy to maintenance, operating cost Low, that landscape effect is good advantage.
Artificial swamp can be divided into surface current artificial wetland, Horizontal subsurface constructed wetland and vertical current constructed wetland, The pluses and minuses that three-type-person's work wetland is had nothing in common with each other, in general, generally there is easily blocking in artificial swamp, engineering accounts for The problem that ground area is big.Wherein, Wetland clogging problem can solve by sewage carries out primary reinforcement process, Have Shaoguan City of Guangdong Province the second sewage treatment plant artificial swamp engineering, Fugang County of Guangdong Province exhibition poplar sewage at home Many successful cases such as treatment plant's engineering.And the problem in terms of project occupation of land is the most effectively solved Certainly, owing to artificial swamp unit are sewage treating efficiency is limited, single one-level artificial wetland treatment is difficult to reach Mark discharge, generally requires multistage artificial swamp among Practical Project and combines application, the multistage wetland of horizontal direction Series winding, can strengthen project occupation of land area further；Although the series winding of vertical direction can effectively reduce floor space, But owing to lower floor's wetland is in anaerobic environment, denitrification ability is more weak.
Therefore, in place of for the deficiencies in the prior art, it is provided that a kind of denitrification effect is good, unit plane contamination Water treatment efficiency is high, and the combined artificial wetland that integrated engineering floor space is little is the most necessary.
Summary of the invention
The present invention is directed to shortcomings and deficiencies of the prior art, it is therefore an objective to provide a kind of denitrification effect good, unit are Sewage treating efficiency is high, the combined artificial wetland that integrated engineering floor space is little.
The object of the invention is realized by following technical proposals:
A kind of double horizontal drowned flow gas operated combined artificial wetland, including entering water collecting-tank, also includes that lower floor's level is dived Streaming artificial swamp unit, lower floor's Horizontal subsurface constructed wetland unit is provided with antiseepage film, antiseepage film sets Be equipped with upper strata Horizontal subsurface constructed wetland unit, the water inlet end of upper strata Horizontal subsurface constructed wetland unit with enter Water collecting-tank connects, and the water side of upper strata Horizontal subsurface constructed wetland unit connects with the top of middle mixing pit Logical, the bottom of middle mixing pit connects with the water inlet end of lower floor's Horizontal subsurface constructed wetland unit, lower floor's level The water side of underflow type artificial wet land unit connects with water outlet collecting-tank, also includes several airways, and each is led The equal one end of trachea is arranged in lower floor's Horizontal subsurface constructed wetland unit, and the other end is exposed independent from upper strata horizontal drowned flow Outside formula artificial swamp unit.
Being provided with vegetable layer on the Horizontal subsurface constructed wetland unit of upper strata as above, vegetable layer includes reed One or more in reed, Herba Typhae, again power flower, Rhizoma Iridis Tectori, Canna generalis Bailey, Medulla Junci, Rhizoma Acori Graminei.
The top of water inlet collecting-tank as above is by water inlet rectification hole and upper strata Horizontal subsurface constructed wetland The water inlet end connection of unit, the bottom of water inlet collecting-tank is communicated with system water inlet pipe.
The bottom of water outlet collecting-tank as above is provided with water outlet collecting-tank packing layer, the bottom of water outlet collecting-tank Cross water rectification hole by water side to connect with the water side of lower floor Horizontal subsurface constructed wetland unit, described in Between the bottom of mixing pit be provided with middle mixing pit packing layer, it is whole that water is crossed by water inlet end in the bottom of middle mixing pit Discharge orifice connects with the water inlet end of lower floor's Horizontal subsurface constructed wetland unit, and the sidewall of water outlet collecting-tank is positioned at water outlet Position bottom collecting-tank packing layer is provided with system blow-down pipe, and the sidewall of water outlet collecting-tank is positioned at water outlet collecting-tank The position at packing layer top is provided with system outlet pipe.
In the middle of as above the top of mixing pit packing layer be positioned at water inlet end cross above water rectification hole 0.1～ 0.2m, the top of water outlet collecting-tank packing layer is positioned at water side and crosses above water rectification hole 0.1～0.2m.
In the middle of as above, mixing pit packing layer is the gravel filling of 25～50mm；Water outlet collecting-tank packing layer It it is the gravel filling of 25～50mm.
Upper strata as above Horizontal subsurface constructed wetland unit is followed successively by first to water side from water inlet end Layer wet land filler layer, the second upper strata wet land filler layer and the 3rd upper strata wet land filler layer.
First upper strata wet land filler layer as above be particle diameter be the gravel filling layer of 30～40mm；Described Second upper strata wet land filler layer be particle diameter be the gravel filling layer of 8～12mm；The 3rd described upper strata wetland is filled out The bed of material is the gravel filling layer of particle diameter 30～40mm；First upper strata wet land filler layer, the second upper strata wet land filler The thickness of layer and the 3rd upper strata wet land filler layer is 0.8～1.2m.
Airway as above along lower floor's Horizontal subsurface constructed wetland unit water (flow) direction according to 40 °～55 ° Oblique cutting is by upper strata Horizontal subsurface constructed wetland unit, antiseepage film and lower floor's Horizontal subsurface constructed wetland unit On the combined artificial wetland constituted.
The bottom of airway as above than lower floor's Horizontal subsurface constructed wetland unit bottom high 0.2～ 0.3m, the top of airway exposes upper strata Horizontal subsurface constructed wetland unit 0.1m～0.2m, airway Arrange that density is not less than 9/m2。
It is an advantage of the current invention that:
1, two-stage Horizontal subsurface constructed wetland is combined in vertical direction, makes the absorption of substrate, mistake Filter usefulness is fully used, and is effectively improved wetland and pollutes the multiclass such as SS, N, P, COD, heavy metal The removal ability of thing, applied widely, can be used for the process of multiclass waste water.
2, arranging airway along water (flow) direction, current can form negative pressure to inducing QI inner air tube so that outside empty Gas is more easy to be inhaled into compared with conventional vertical airway, and the problem efficiently solving lower floor's wetland anoxia, under lifting The layer wetland disposal ability to pollutant especially ammonia nitrogen.
3, apparatus of the present invention compact conformation, hydraulic load is high, can effectively reduce project occupation of land area, saves work Journey construction cost.
4, two-stage wetland is horizontal drowned flow formula, and weather is less to wetland variation influential effect, system stability Good.
Accompanying drawing explanation
Fig. 1 is the double horizontal drowned flow gas operated combined artificial wetland structural representation of one provided by the present invention.
Wherein:
1 system water inlet pipe, 2 water inlet pipe valves, 3 water inlet collecting-tanks, 4 water inlet rectification hole, 5-upper stratas Horizontal subsurface constructed wetland unit, 6 first upper strata wet land filler layers, 7 second upper strata wet land filler layers, 8-the 3rd upper strata wet land filler layer, 9 vegetable layers, 10 upper strata wetland effluent pipes, 11-outlet pipe valve, 12 Middle mixing pit, 13 middle mixing pit packing layers, 14-water inlet end cross water rectification hole, 15-antiseepage film, 16- Water is crossed in lower floor's Horizontal subsurface constructed wetland unit, 17-lower floor wet land filler layer, 18-airway, 19-water side Rectification hole, 20-water outlet collecting-tank, 21-water outlet collecting-tank packing layer, 22-system blow-down pipe, 23-system are vented Tube valve, 24-system outlet pipe, 25-system outlet pipe valve.
Detailed description of the invention
A kind of double horizontal drowned flow gas operated combined artificial wetland, by two-stage Horizontal subsurface constructed wetland at vertical blank It is combined between, and in lower floor's wet land filler layer 17, implants airway 18；A kind of double horizontal drowned flow gas operated Combined artificial wetland include with outside isolation closing wetland body of wall, water outlet collecting-tank 20, water inlet collecting-tank 3, Upper strata Horizontal subsurface constructed wetland unit 5, lower floor's Horizontal subsurface constructed wetland unit 16, middle mixing pit 12.Wherein, separated by antiseepage film 15 between upper and lower two-layer Horizontal subsurface constructed wetland unit 5/16；Water outlet Collecting-tank 20, water inlet collecting-tank 3, combined artificial wetland (include upper and lower two-layer Horizontal subsurface constructed wetland list The entirety that unit 5/16 and middle antiseepage film 15 layers are constituted), middle mixing pit 12 separated by partition wall each other. Sewage is entered water inlet collecting-tank 3 by system water inlet pipe 1, then flows into upper strata Horizontal subsurface constructed wetland unit 5 Mixing pit 12 in the middle of entering after processing, then flow into lower floor's Horizontal subsurface constructed wetland unit 16 and carry out secondary Purify, by running outlet pipe discharge after finally entering water outlet collecting-tank 20.
Embodiment 1:
A kind of double horizontal drowned flow gas operated combined artificial wetland, including water outlet collecting-tank 20, water inlet collecting-tank 3, Upper strata Horizontal subsurface constructed wetland unit 5, lower floor's Horizontal subsurface constructed wetland unit 16, middle mixing pit 12.Wherein, separated by antiseepage film 15 between described upper and lower two-layer Horizontal subsurface constructed wetland unit；Institute State water outlet collecting-tank 20, water inlet collecting-tank 3, combined artificial wetland (include that upper and lower two-layer horizontal drowned flow formula is artificial The entirety that wetland unit 5/16 and middle antiseepage film 15 layers are constituted), middle mixing pit 12 each other by every Wall separates.
Described water inlet collecting-tank 3 includes system water inlet pipe 1, water inlet collecting-tank cell body.Water inlet collecting-tank 3 is located at The water inlet end of layer Horizontal subsurface constructed wetland unit 5, it arranges purpose and is to ensure that stablizing of wetland amount of inlet water, System water inlet pipe 1 uses UPVC or PE of one or more DN100 DN300 according to processing water yield difference Pipe, and on system water inlet pipe 1, set water inlet pipe valve 2 control amount of inlet water；Water inlet collecting-tank 3 is by upper water Flat underflow type artificial wet land unit 5 side sets water inlet rectification hole 4.
Described upper strata Horizontal subsurface constructed wetland unit 5 includes vegetable layer 9, packing layer and outlet pipe.Vegetable layer 9 is the one in phragmites communis, Herba Typhae, again power flower, Rhizoma Iridis Tectori, Canna generalis Bailey, Medulla Junci, Rhizoma Acori Graminei or combination in any； Packing layer is had first upper strata wet land filler layer the 6, second upper strata wet land filler successively by direction to the water outlet direction that intakes Layer the 7, the 3rd upper strata wet land filler layer 8, the first upper strata wet land filler layer 6 is filled out for the gravel that particle diameter is 30～40mm The bed of material, the second upper strata wet land filler layer 7 is filled out for gravel filling layer, the 3rd upper strata wetland that particle diameter is 8～12mm The bed of material 8 is the gravel filling layer of particle diameter 30～40mm, first upper strata wet land filler layer the 6, second upper strata wet land filler Packing layer thickness in layer 7 and the 3rd upper strata wet land filler layer 8 is 0.8～1.2m；Upper strata wetland effluent pipe 10 is positioned at Upper strata Horizontal subsurface constructed wetland unit 5 and the division wall top of middle mixing pit 12, according to processing the water yield not Manage with UPVC or PE using one or more DN100～DN300, and set on upper strata wetland effluent pipe 10 Outlet pipe valve 11 controls water flow.
Described middle mixing pit 12 includes mixing pit cell body and middle mixing pit packing layer 13.Middle mixing pit 12 It is located at the water side of upper strata Horizontal subsurface constructed wetland unit 5, connects upper and lower two-stage artificial swamp, middle mixed Middle mixing pit packing layer 13 is laid, at layer Horizontal subsurface constructed wetland unit 16 on the lower in the bottom closing pond 12 Setting water inlet end bottom one side wall and cross water rectification hole 14, middle mixing pit packing layer 13 is 25～50mm for particle diameter Gravel filling, middle mixing pit packing layer 13 is crossed water inlet end and is crossed water rectification hole 14 top 0.1～0.2m.It sets Putting purpose is to make water inlet end cross water rectification hole 16 to intake uniformly.
Described lower floor Horizontal subsurface constructed wetland unit 16 is made up of packing layer and airway 18, and packing layer is grain The gravel filling in footpath 12～25mm, thickness is 0.8～1.2m；Airway 18 is UPVC pipe or the PE pipe of DN25, Along 40 °～55 ° oblique cuttings of lower floor's Horizontal subsurface constructed wetland unit 16 water (flow) direction in packing layer, airway 18 Bottom is than bottom packing layer high 0.2～0.3m, and upper strata Horizontal subsurface constructed wetland list is exposed at airway 18 top Unit 5 packing layer 0.1m～0.2m, arrange that density is not less than 9/m2。
Described water outlet collecting-tank 20 includes system outlet pipe 24, system blow-down pipe 22, water outlet collecting-tank packing layer 21 And water outlet collecting-tank cell body.Water outlet collecting-tank 20 is located at the water outlet of lower floor's Horizontal subsurface constructed wetland unit 16 End, sets out water end (W.E.) bottom layer Horizontal subsurface constructed wetland unit 16 1 side wall on the lower and crosses water rectification hole 19, Gravel filling (particle diameter 25～50mm) is laid in the bottom of water outlet collecting-tank 20, and water outlet collecting-tank packing layer 21 did not had Water rectification hole 19 top 0.1～0.2m is crossed in water side, and it arranges purpose and is to ensure that wetland effluent water quality and the water yield Stable；System outlet pipe 24 is positioned on the exterior wall of water outlet collecting-tank packing layer 21 top, adopts according to processing water yield difference Manage with UPVC or PE of one or more DN100～DN300, and on pipeline, set Valve controlling water flow； System blow-down pipe 22 is positioned at bottom water outlet collecting-tank packing layer 21 on exterior wall, uses one according to processing water yield difference Or UPVC or the PE pipe of many DN100～DN300, and on pipeline, set valve to control emptying.
Embodiment 2
As it is shown in figure 1, a kind of double horizontal drowned flow gas operated combined artificial wetland, including system water inlet pipe 1, water inlet On tube valve 2, water inlet collecting-tank 3, water inlet rectification hole 4, upper strata Horizontal subsurface constructed wetland unit 5, first Layer wet land filler layer the 6, second upper strata wet land filler layer the 7, the 3rd upper strata wet land filler layer 8, vegetable layer 9, upper strata Wetland effluent pipe 10, outlet pipe valve 11, middle mixing pit 12, middle mixing pit packing layer 13, water inlet end mistake Water rectification hole 14, antiseepage film 15, lower floor's Horizontal subsurface constructed wetland unit 16, lower floor's wet land filler layer 17, Airway 18, water side cross water rectification hole 19, water outlet collecting-tank 20, water outlet collecting-tank packing layer 21, system are put Blank pipe 22, system blow-down pipe valve 23, system outlet pipe 24, system outlet pipe valve 25.
System water inlet pipe 1, upper strata wetland effluent pipe 10, system blow-down pipe 22, system outlet pipe 24 are one The UPVC pipe of DN300.
Water inlet pipe valve 2, outlet pipe valve 11, system blow-down pipe valve 23, system outlet pipe valve 25 are Manual soft sealing butterfly valve.
Water inlet collecting-tank 3 is reinforced concrete structure, and specification is L × B × H (wherein L is for long, and B is wide, and H is high) =5m × 0.5m × 1.3m.
Water inlet rectification hole 4 specification is B × H=0.2 × 0.3m, totally 4, each interval 1m.
Upper strata Horizontal subsurface constructed wetland unit 5 cell body is reinforced concrete structure, and specification is L × B × H=10m × 5m × 1.3m.
First upper strata wet land filler layer 6 for the gravel filling that particle diameter is 30～40mm, packing layer specification is L × B × H=5m × 1m × 1m.
Second upper strata wet land filler layer 7 for the gravel filling that particle diameter is 8～12mm, packing layer specification is L × B × H=5m × 8m × 1m.
3rd upper strata wet land filler layer 8 is the gravel filling that particle diameter is 30～40mm, and packing layer specification is L × B × H=5m × 1m × 1m.
Vegetable layer 9 planting plants is phragmites communis, and planting density is 25 strains/m2。
Middle mixing pit 12 is reinforced concrete structure, and specification is L × B × H=5m × 0.5m × 2.3m.
Middle mixing pit packing layer 13 particle diameter is 25～50mm, and thickness is 0.5m.
It is B × H=0.2 × 0.3m that water inlet end crosses water rectification hole 14 specification, totally 4, each interval 1m.
Antiseepage film 15 is HDPE antiseepage film (15).
Lower floor's Horizontal subsurface constructed wetland unit 16 cell body is reinforced concrete structure, and specification is L × B × H=10.5m × 5m × 1m.
Lower floor's wet land filler layer 17 for the gravel filling that particle diameter is 12～25mm, packing layer specification is 0.5m×5m×1m。
Airway 18 is the UPVC pipe of DN25, arranges that density is 9/m2。
It is B × H=0.2 × 0.3m that water rectification hole 19 specification is crossed in water side, totally 4, each interval 1m.
Water outlet collecting-tank 20 is reinforced concrete structure, and specification is L × B × H=5m × 0.5m × 2.3m.
Water outlet collecting-tank packing layer 21 particle diameter is 25～50mm, and thickness is 0.5m.
Other parts are consistent with embodiment 1.
Table 1 is the result of the test using the present embodiment:
Embodiment 3
Embodiment 3 is with the difference of embodiment 2:
System water inlet pipe 1, upper strata wetland effluent pipe 10, system blow-down pipe 22, system outlet pipe 24 are two Spacing is the UPVC pipe of the DN200 of 2m.
Water inlet collecting-tank 3 is reinforced concrete structure, and specification is L × B × H=5m × 0.5m × 1.4m.
Upper strata Horizontal subsurface constructed wetland unit 5 cell body is reinforced concrete structure, and specification is L × B × H=10m × 5m × 1.4m.
First upper strata wet land filler layer 6 for the gravel filling that particle diameter is 30～40mm, packing layer specification is L × B × H=5m × 1m × 1.1m.
Second upper strata wet land filler layer 7 for the gravel filling that particle diameter is 8～12mm, packing layer specification is L × B × H=5m × 8m × 1.1m.
3rd upper strata wet land filler layer 8 is the gravel filling that particle diameter is 30～40mm, and packing layer specification is L × B × H=5m × 1m × 1.1m.
Vegetable layer 9 planting plants is Rhizoma Iridis Tectori, and planting density is 25 strains/m2。
Middle mixing pit 12 is reinforced concrete structure, and specification is L × B × H=5m × 0.5m × 2.5m.
Lower floor's Horizontal subsurface constructed wetland unit 16 cell body is reinforced concrete structure, and specification is L × B × H=10.5m × 5m × 1.1m.
Lower floor's wet land filler layer 17 for the gravel filling that particle diameter is 12～25mm, packing layer specification is 0.5m×5m×1.1m。
Airway 18 is the UPVC pipe of DN25, arranges that density is 12/m2。
Water outlet collecting-tank 20 is reinforced concrete structure, and specification is L × B × H=5m × 0.5m × 2.5m.
Other parts are consistent with embodiment 1.
Following table is the result of the test using the present embodiment: table 2 is the result of the test using the present embodiment:
It is last it should be noted that, above example is only in order to illustrate technical scheme rather than to the present invention The restriction of protection domain, although the present invention being explained in detail with reference to preferred embodiment, the common skill of this area Art personnel should be appreciated that and can modify technical scheme or equivalent, without deviating from this The spirit and scope of inventive technique scheme.

Claims (9)

1. double horizontal drowned flow gas operated combined artificial wetlands, including entering water collecting-tank (3), it is characterised in that also include lower floor Horizontal subsurface constructed wetland unit (16), lower floor's Horizontal subsurface constructed wetland unit (16) is provided with antiseepage film (15), antiseepage film (15) being provided with upper strata Horizontal subsurface constructed wetland unit (5), the horizontal underflow type artificial in upper strata is wet The water inlet end on ground unit (5) connects with water inlet collecting-tank (3), the water outlet on upper strata Horizontal subsurface constructed wetland unit (5) The top with middle mixing pit (12) is held to connect, the bottom of middle mixing pit (12) and lower floor's Horizontal subsurface constructed wetland list The water inlet end connection of unit (16), the water side of lower floor's Horizontal subsurface constructed wetland unit (16) and water outlet collecting-tank (20) Connection, also includes several airways (18), and it is wet that each airway (18) all one end are arranged on the horizontal underflow type artificial of lower floor In ground unit (16), the other end is exposed independent from upper strata Horizontal subsurface constructed wetland unit (5) outward, under airway (18) edge Layer Horizontal subsurface constructed wetland unit (16) water (flow) direction according to 40 °～55 ° of oblique cuttings by the horizontal underflow type artificial in upper strata The combined artificial wetland that wetland unit (5), antiseepage film (15) and lower floor's Horizontal subsurface constructed wetland unit (16) are constituted On.
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 1, it is characterised in that described upper strata Being provided with vegetable layer (9) on Horizontal subsurface constructed wetland unit (5), vegetable layer (9) includes phragmites communis, Herba Typhae, again power One or more in flower, Rhizoma Iridis Tectori, Canna generalis Bailey, Medulla Junci, Rhizoma Acori Graminei.
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 1, it is characterised in that described water inlet The top of collecting-tank (3) is connected by the water inlet end of water inlet rectification hole (4) with upper strata Horizontal subsurface constructed wetland unit (5) Logical, the bottom of water inlet collecting-tank (3) is communicated with system water inlet pipe (1).
4. according to a kind of double horizontal drowned flow gas operated combined artificial wetlands described in any one of claims 1 to 3, it is characterised in that institute The bottom of the water outlet collecting-tank (20) stated is provided with water outlet collecting-tank packing layer (21), and the bottom of water outlet collecting-tank (20) leads to Cross water side to cross water rectification hole (19) and connect with the water side of lower floor's Horizontal subsurface constructed wetland unit (16), described in Between the bottom of mixing pit (12) be provided with middle mixing pit packing layer (13), the bottom of middle mixing pit (12) is by water inlet Water rectification hole (14) was held to connect with the water inlet end of lower floor's Horizontal subsurface constructed wetland unit (16), water outlet collecting-tank (20) sidewall is positioned at the position of water outlet collecting-tank packing layer (21) bottom and is provided with system blow-down pipe (22), and water outlet is catchmented The sidewall in pond (20) is positioned at the position at water outlet collecting-tank packing layer (21) top and is provided with system outlet pipe (24).
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 4, it is characterised in that described centre The top of mixing pit packing layer (13) is positioned at water inlet end and crosses water rectification hole (14) top 0.1～0.2m, water outlet collecting-tank filler The top of layer (21) is positioned at water side and crosses water rectification hole (19) top 0.1～0.2m.
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 5, it is characterised in that described centre Mixing pit packing layer (13) is the gravel filling of 25～50mm；Water outlet collecting-tank packing layer (21) is the gravel of 25～50mm Hardcore.
7. according to a kind of double horizontal drowned flow gas operated combined artificial wetlands described in any one of claims 1 to 3, it is characterised in that institute Upper strata Horizontal subsurface constructed wetland unit (5) stated is followed successively by the first upper strata wet land filler layer from water inlet end to water side (6), the second upper strata wet land filler layer (7) and the 3rd upper strata wet land filler layer (8).
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 7, it is characterised in that described the One upper strata wet land filler layer (6) be particle diameter be the gravel filling layer of 30～40mm；The second described upper strata wet land filler layer (7) be particle diameter be the gravel filling layer of 8～12mm；The 3rd described upper strata wet land filler layer (8) is particle diameter 30～40mm Gravel filling layer；First upper strata wet land filler layer (6), the second upper strata wet land filler layer (7) and the 3rd upper strata wet land filler The thickness of layer (8) is 0.8～1.2m.
The double horizontal drowned flow gas operated combined artificial wetland of one the most according to claim 7, it is characterised in that described inducing QI The bottom of pipe (18) is than the bottom high 0.2～0.3m of lower floor's Horizontal subsurface constructed wetland unit (16), airway (18) Top expose upper strata Horizontal subsurface constructed wetland unit (5) 0.1m～0.2m, the layout density of airway (18) is the least In 9/m2。
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CN102211818A (en) * 2010-04-02 2011-10-12 温州医学院 Improved design method of horizontal subsurface flow wetland for coping with substrate clogging
JP4877546B2 (en) * 2006-09-14 2012-02-15 独立行政法人農業・食品産業技術総合研究機構 Underflow constructed wetland system
US8252182B1 (en) * 2008-09-11 2012-08-28 University Of Central Florida Research Foundation, Inc. Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems
CN204550331U (en) * 2015-03-06 2015-08-12 武汉中科水生环境工程股份有限公司 A kind of two horizontal drowned flow gas operated combined artificial wetland

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4877546B2 (en) * 2006-09-14 2012-02-15 独立行政法人農業・食品産業技術総合研究機構 Underflow constructed wetland system
US8252182B1 (en) * 2008-09-11 2012-08-28 University Of Central Florida Research Foundation, Inc. Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems
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