CN205710320U - Vertical sewage purification and plant cultivation system - Google Patents
Vertical sewage purification and plant cultivation system Download PDFInfo
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- CN205710320U CN205710320U CN201620404605.1U CN201620404605U CN205710320U CN 205710320 U CN205710320 U CN 205710320U CN 201620404605 U CN201620404605 U CN 201620404605U CN 205710320 U CN205710320 U CN 205710320U
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- filter wall
- biological filter
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- spray pipe
- planting
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Abstract
A kind of vertical sewage purification and plant cultivation system, including landscape pond (fish jar), biological filter wall, plant walls, spray pipe net etc..Biological filter wall is made up of frame structure, rustless steel steel mesh, biofilter material, frame structure is positioned at landscape pond (fish jar) top, it is that employing concrete is poured into a mould, stainless-steel pipe is welded framework junction part, the each alien invasion of frame structure has welded rustless steel steel mesh, and frame structure inner space that rustless steel steel mesh fences up is full is filled with biofilter material；Plant walls is adhering closely on the rustless steel steel mesh of each alien invasion of biological filter wall, and plant walls is made up of planting carpet and planting bag, and planting carpet sews on the alien invasion of rustless steel steel mesh, and the most parallel sewing of planting bag, on planting carpet, has cultivation matrix in planting bag；Latticed spray pipe net is positioned at above biological filter wall, and spray pipe net has been uniformly distributed shower nozzle；Landscape pond (fish jar) is connected with sparge pipe with water inlet pipe by water pump.
Description
Technical field
This utility model relates to sewage purification and field of plant growing technology, particularly biofiltration is tied mutually with plant walls
The sewage purification closed and plant cultivation system.
Background technology
The sewage that human lives produces, Landscape River, landscape pond etc. supplement deficiency cause because of poor fluidity, the water sources of water
Eutrophication water quality deteriorates, and views and admires fish tank water because of what Fish row rushed down pollution in family, and these water are required for because being contaminated
Carry out purified treatment.The most the most frequently used sewage purification technology scheme, usually utilizes the biofiltration for the treatment of sewage by using biological membrane
Technology, this technical scheme has high treating effect, the feature that purification of water quality degree is high.But single applicable technology of biological membrane, ignores
The plant absorption cleaning function to sewage, and plant landscape effect that environment and family are beautified and clean to air
Change effect.And current vertical plant cultivation technique, its irrigate mostly use cleaning tap water, ignore sanitary sewage and
Fish jar water not only can provide the moisture needed for plant growing, moreover it is possible to provides the nutrition required for plant growing.
Summary of the invention
The technical problems to be solved in the utility model is to provide and a kind of biofiltration is combined with plant absorption growth phase
Sewage purification and plant cultivation system.
In order to realize foregoing invention purpose, vertical sewage purification described in the utility model and plant cultivation system include view
Pond (fish jar), biological filter wall, plant walls, spray pipe net etc..Landscape pond described in the utility model (fish jar), is exactly common in indoor
View and admire fish jar, be to collect the bigger pond of the area of sanitary sewage or landscape water or Landscape River, bottom sink in outdoor
One layer of biofilter material can be spread, pond can cultivate the sight such as some phragmites communiss, Herba Eichhorniae, Rhizoma Acori Graminei, Flos Nelumbinis, Flos nymphaeae (Nymphaea teragona Georgi) is aquatic plants
Thing, can also put some fancy fishes in a suitable place to breed in pond.Biological filter wall described in the utility model includes frame structure, rustless steel steel mesh
And biofilter material；Described frame structure is to use concrete cast, stainless-steel pipe welding or other material to be made
Framework junction part, the profile of frame structure can be designed to cube, cylinder, vertebral body or other any shape as required, and it is big
Small size can also arbitrarily determine as required；Described rustless steel steel mesh is fixed on each alien invasion of frame structure, stainless
Frame structure surrounding is surrounded into net envelope by steel steel mesh；Described biofilter material includes quartz sand, anthracite, haydite, Maifanitum, coral
Porous, the hard materials such as coral stone, pelelith, activated carbon, fill full by the biofilter material of the growth of these suitable micro-organisms and breeding
The inner space of frame structure；Biological filter wall is formed similar wall by frame structure, rustless steel steel mesh with biofilter material three exactly
The structure of body.Plant walls described in the utility model is attached on each alien invasion of biological filter wall, plant walls include planting carpet and
Planting bag；The sewing of described planting carpet is on the rustless steel steel mesh of each alien invasion in addition to bottom frame structure and top；Institute
State the most parallel sewing of planting bag on planting carpet.Spray pipe net described in the utility model, is positioned at above frame structure, for net
Trellis, spray pipe net has been uniformly distributed shower nozzle, and spray pipe net also includes being positioned at the water pump in landscape pond (fish jar) and water inlet
Pipe.
Further, landscape pond described in the utility model (fish jar), one layer of quartz sand, pelelith can be spread bottom pond
Deng multiporous biological filtrate, by anaerobe biofiltration effect, sewage is purified, by the phragmites communis cultivated in landscape pond,
Herba Eichhorniae, Rhizoma Acori Graminei, Flos Nelumbinis etc. are viewed and admired water plant and are attracted sewage Middle nutrition composition, can also put Cyprinus carpio, brocade in pond in a suitable place to breed
Cyprinus carpio, Carassius auratus etc., increase its sight.
Further, the frame structure in biological filter wall described in the utility model, it is positioned at the upper of landscape pond (fish jar) water
Side, each of which alien invasion all rivets or has welded rustless steel steel mesh, the size dimension of rustless steel steel mesh and place frame structure
The size dimension in face is consistent；The profile of frame structure and size can be designed to as required cube, cylinder, vertebral body or other
What shape, its size dimension can also the most arbitrarily make.
Further, the biofilter material in biological filter wall described in the utility model, is the quartz sand through processed, nothing
The hard material of the internal porous such as bituminous coal, haydite, Maifanitum, corallite, pelelith, activated carbon, fills from level to level by biofilter material
When filling out frame structure inner space, one or more biofilter materials optional are used in mixed way or slicing and filling, and filling is biological
The frame structure inner space that should be surrounded by rustless steel steel mesh during filtrate is stuffed entirely with full, with biological filter in biological filter wall
Form more biomembrane between material and in biofilter material granule, play the filtration of biofilter material to greatest extent.
Further, plant walls described in the utility model is made up of planting carpet and planting bag, and planting carpet and planting bag are all adopted
By non-woven fabrics anticorrosive, that water-permeable and air permeable is good or other geotextiles with same performance or woollen blanket material；Planting carpet is firm
It is sewed together with the rustless steel steel mesh on biological filter wall surface closely；Planting bag is pouch-shaped, and the most parallel sewing is being planted
Plant on blanket, in planting bag, have water-retaining property and the cultivation matrix of the good applicable plant growing of permeability, such as coconut husk soil, Margarita
Rock, wood flour etc., more to receive and to fix moisture and organic matter in sewage, conserve and provide plant and be attached to plant roots
The moisture required for growth of microorganism in portion and cultivation matrix and nutrition.
Further, spray pipe net described in the utility model, it is positioned at above biological filter wall, for fenestral fabric, sparge pipe
Net is mounted below multiple shower nozzle, by reasonable installation sparge pipe upper nozzle quantity and position, makes the sewage in entrance sparge pipe
Effectively lower spray, allow sewage even in the biofilter material in biological filter wall, and even into being attached to biological filter wall
Each alien invasion on plant walls in planting carpet and planting bag in, make sewage constantly uniform flow biological filter wall and plant
Wall.
Further, this utility model uses when indoor fish jar, and biological filter wall is arranged on the top of the fish jar water surface, fish jar
Interior water is extracted in spray pipe net by water pump, is injected in biological filter wall described in the utility model and plant walls from top
Portion, after filtration, purification, falls among fish jar, such iterative cycles, it is achieved on fish jar purification of water quality and plant walls again
Plant growing dual function.
Further, this utility model uses when sanitary sewage and landscape water purified treatment, and described biological filter wall is installed
Above the landscape pond water surface, the sewage in landscape pond is extracted in spray pipe net by water pump, and the shower nozzle from pipe network sprays into biology
In filter wall and plant walls, by biofiltration and plant absorption, the sewage after filtration, again fall among landscape pond, so enter
The most continual filtration of row and decontamination cycle, make sanitary sewage be purified, also make the plant in plant walls obtain sufficiently
Nutrition and moisture.
Further, spray pipe net described in the utility model, because of the different modeling of frame structure, at above-mentioned spray pipe net not
Easily realize biological filter wall and when uniformly watering of plant walls, accurate drip irrigation equipment can be installed and substitute above-mentioned spray pipe net,
Drip irrigation equipment is connected with water pump and water inlet pipe, realizes biological filter wall and plant walls attached thereto by the way of drip irrigation
Carry out the most uniform pouring.
Further, vertical plant planting technology is used because of this utility model and sewage that technology of biological membrane combines
Purified treatment mode, and using biofilter material to form biomembrane is only one of technology of biological membrane, the production method of biofilm structure
Having multiformity, therefore the production method of biological filter wall also has diversified mode, including install MBR membrane bioreactor or
Other biological membrane assembly of person substitutes the biofilter material in biological filter wall described in the utility model and forms biological filter wall, this biological filter wall
Vertical sewage purification described in the utility model and plant cultivation system is collectively constituted with plant walls.
Vertical biofiltration described in the utility model and plant walls sewage purification technology, have the advantage that this is vertical dirty
Water warfare and plant walls technology, launch to vertical air, be therefore not take up the area of plane；Sewage relies on self gravitation to pass through
When biological filter wall and plant walls, the oxygen dissolution in air is in sewage, and biofilter material normality is in the sufficient ring of oxygen
Under border, it is very beneficial to the formation of biofilm structure and sewage is carried out aerobic purified treatment.Vertical sewage described in the utility model
Purifying different according to need with plant cultivation system, changeable, face shaping can be arbitrarily devised, indoor, outdoor and times
Where side is the most applicable, this utility model simple in construction, it is easy to install and safeguard, it is simple to promote and be suitable for.It addition, in plant walls
Can all kinds of plants suitably viewed and admired of stereo planting and vegetables in season, create the natural landscape of three-dimensional green ecological for people,
Joyful mood, moreover it is possible to produce certain economic worth.
Accompanying drawing explanation
Figure one, is the vertical sewage purification of this utility model and plant cultivation system elevation.
Figure two, is the vertical sewage purification of this utility model and plant cultivation system sectional structure chart.
Shown in figure: landscape pond (or fish jar) 1, biofilter material 1.1, hydroponic plant 1.2；Biological filter wall 2, frame structure
2.1, rustless steel steel mesh 2.2；Biofilter material 2.3；Plant walls 3, planting carpet 3.1, planting bag 3.2, cultivation matrix 3.3；Sparge pipe
Net 4, water pump 4.1, water inlet pipe 4.2, shower nozzle 4.3.
Detailed description of the invention:
Below in conjunction with the accompanying drawings, this utility model is described in further detail.
As shown in Figure 1 and Figure 2: be the vertical sewage purification of this utility model and the elevation of plant cultivation system and profile,
Landscape pond (fish jar) 1 is the fish jar of family feeding pet fish in indoor；Out of doors for collecting sanitary sewage or the view of landscape water
River course or landscape pond, can spread one layer of multiporous biological filtrate such as quartz sand, pelelith 1.1 in basin bottom, pass through biofilter material
Anaerobe group in 1.1, carries out Anaerobe filtration, purification to sewage, can cultivate in landscape pond, Flos nymphaeae (Nymphaea teragona Georgi), phragmites communis, water calabash
Sewage Middle nutrition composition is carried out attracting to purify by the hydroponic plants 1.2 such as reed, Rhizoma Acori Graminei, Flos Nelumbinis.Biological filter wall 2 by frame structure 2.1,
Rustless steel steel mesh 2.2, biofilter material 2.3 are formed；Its middle frame structure 2.1, is by concrete, rustless steel or other material
Material cast, the inside that is welded are hollow solid framework, frame structure 2.1 size, just, can be the most any
Making, its profile can be the arbitrary shapes such as cuboid, cylinder, vertebral body, and frame structure 2.1 is arranged on landscape pond (fish jar) 1
The top of water, after the water after filtration flows down along frame structure 2.1, falls into or is flowed in landscape pond (fish jar) 1；Rustless steel
Steel mesh 2.2, is riveted by welding or alternate manner, fixedly secures in frame structure 2.1, and rustless steel steel mesh 2.2 is by framework
Each facade of structure 2.1 is surrounded completely, and the inner space being consequently formed is for filling biofilter material 2.3；Biofilter material
2.3, can be selected for porous, the hard materials such as quartz sand, anthracite, haydite, Maifanitum, corallite, pelelith, activated carbon；Filling
During biofilter material 2.3, one or more biofilter materials 2.3 optional are used in mixed way or slicing and filling, should be by framework during filling
The inner space that structure 2.1 and rustless steel steel wire 2.2 are surrounded is stuffed entirely with full, contains more moisture in making biological filter wall 2,
There is provided environment preferably for the growth of microorganism in biofilter material 2.3 and breeding, form more biomembrane, send out to greatest extent
Wave the filtration of biofilter material 2.3.Plant walls 3 is fixed on each external wall elevation of biological filter wall 2 closely, plant walls 3 by
Planting carpet 3.1 and planting bag 3.2 form；Planting carpet 3.1, use non-woven fabrics anticorrosive, that water-permeable and air permeable is good or other have
The geotextiles of same performance or blanket material, the outer surface each with rustless steel steel mesh 2.2 of planting carpet 3.1 secure rigid sews one
Rising, planting carpet 3.1 size is in the same size with the rustless steel steel mesh 2.2 on biological filter wall 2, and planting carpet 3.1 is by biological filter wall 2 tightly
Wrap up；Planting bag 3.2, be also use anticorrosive, non-woven fabrics that water-permeable and air permeable is good or other there is same performance
Geotextiles or blanket material are made, planting bag 3.2 sewing the most line by line on planting carpet 3.1, planting bag 3.2
Profile is bag-shaped, has the cultivation matrix 3.3 of the applicable plant growing of water-retaining property and good air permeability, such as coconut husk in planting bag 3.2
Soil, perlite, wood flour etc., more to receive and to fix moisture and organic matter in sewage, conserve and provide plant and attachment
The moisture required for growth of microorganism in plant root and cultivation matrix and nutrition.Spray pipe net 4 is positioned at biological filter wall 2
Above, for fenestral fabric, including water pump 4.1, water inlet pipe 4.2, shower nozzle 4.3, water pump 4.1 is positioned at landscape pond (fish jar) 1, logical
Crossing water inlet pipe 4.2 to communicate with the water emitting portion of the spray pipe net 4 above biological filter wall 2, sewage is extracted into by it by water inlet pipe 4.2
In spray pipe net 4；Spray pipe net 4 is positioned at the top of biological filter wall 2, and spray pipe net 4 is mounted below multiple shower nozzle 4.3, passes through
The quantity of reasonable installation spray pipe net upper nozzle 4.3 and position, allow the quantity of shower nozzle 4.3 and position and biological filter wall 2 and plant
Wall 3 is corresponding, so that the effectively lower spray of the sewage entered in spray pipe net 4, allows sewage even into the life in biological filter wall 2
In thing filtrate 2.3, and even into planting carpet 3.1 He in the plant walls 3 on each alien invasion being attached to biological filter wall 2
In planting bag 3.2, sewage is made constantly to uniform flow biological filter wall 2 and plant walls 3.
Because of the different modeling of biological filter wall 2, it is difficult to realize special-shaped biological filter wall 2 and plant walls 3 at above-mentioned spray pipe net
When uniformly spraying, accurate drip irrigation equipment can be installed and substitute above-mentioned spray pipe net 4, drip irrigation equipment and water pump 4.1 and water inlet
Pipe 4.2 is connected, and realizes carrying out biological filter wall 2 and plant walls 3 attached thereto the most uniformly by the way of drip irrigation
Pouring.
In Fig. 1, Fig. 2, the sewage in landscape pond (fish jar) 1, rise to the water spray above biological filter wall by water pump 4.1
In pipe network 4, the equally distributed shower nozzle 4.3 above sparge pipe 4, foul water fraction is fairly distributed the layer in biological filter wall 2
In layer biofilter material 2.3, part is assigned on each external wall elevation of biological filter wall 2 planting carpet 3.1 He in the plant walls 3 of attachment
In planting bag 3.2, sewage relies on self gravitation effect, flows through biological filter wall 2 and plant walls 3 from top to bottom.Flow into plant walls 3
Sewage, flows in planting bag 3.2 along planting carpet 3.1, sewage infiltration planting carpet 3.1 and planting bag 3.2, planting in planting bag 3.2
Thing root system and cultivation matrix 3.3 can effectively absorb the polluters such as the ammonia nitrogen phosphorus in sewage.It is allocated and is flowed into biological filter
Sewage in wall 2, during by biological filter wall 2, a lot of oxygen dissolutions in sewage because biofilter material 2.3 be through
There are the pelelith of a lot of trickle hole, quartz, haydite etc. in surface and the inside of crossing processed, so can be at biological filter wall 2
In, the surface of biofilter material 2.3 and the substantial amounts of microorganism of internal attachment, microorganism flocks together in a large number and defines a lot of biology
Film, is sufficiently mixed between sewage, air, biomembrane three naturally, and aerobic bioreactor reaction occurs, and in sewage, carbon, nitrogen, phosphorus etc. are organic
Thing can be removed, and makes sewage be purified.The sewage processed drops in biological filter wall 2 landscape pond (fish jar) 1 below.
The water of landscape pond (fish jar) 1 is filtered in spray pipe net 4 again by water pump 4.1 circularly enhancing.So by the most repeatedly
After the biofiltration of circulation and plant absorbing process, sewage can become the process water complying fully with higher emissions standard.
Above content is only to this utility model description, biological filter wall 2 described in the utility model and plant walls 3
Being to be combined with each other in a vertical manner, be connected with each other, symbiotic co-existence, permeate rich in plant and microorganism is organic ecological
System.So, affiliated those skilled in the art describe the various amendments made or supplement or use invention
Similar mode substitutes, and without departing from inventing or surmounting scope defined in the claims, all should belong to this practicality
Novel protection domain.
Claims (7)
1. vertical sewage purification and a plant cultivation system, including outdoor landscape pond or indoor fish jar, biological filter wall, plant
Wall, spray pipe net；The bottom place mat of described outdoor landscape pond or indoor fish jar biofilter material, has planted aquatic in pond or in cylinder
Plant；Described biological filter wall is positioned at above outdoor landscape pond or the indoor fish jar water surface, by frame structure, rustless steel steel mesh and biology
Filtrate forms, and frame structure is the framework junction part using concrete cast or stainless-steel pipe to be welded, and frame structure is each
Alien invasion all welds or has riveted rustless steel steel mesh；Biological filter is filled up in rustless steel steel mesh and the frame structure inner space that fences up
Material or installation MBR membrane bioreactor assembly；Described plant walls is adhering closely to the rustless steel steel mesh of each alien invasion of biological filter wall
On, plant walls is made up of planting carpet and planting bag, and planting carpet sews on rustless steel steel mesh, and the most parallel sewing of planting bag exists
On planting carpet；Latticed spray pipe net is positioned at the top of biological filter wall, and spray pipe net has been uniformly distributed shower nozzle；Outdoor landscape
Pond or indoor fish jar are connected with spray pipe net with water inlet pipe by water pump.
2. vertical sewage purification as claimed in claim 1 and plant cultivation system, is characterized in that the frame in described biological filter wall
Shelf structure, is the framework junction part using concrete cast, stainless-steel pipe welding or other material to be made, and framework is tied
The profile of structure is to be designed to any shape as required, and its size dimension the most arbitrarily makes, outside frame structure is each
Facade all welds or has riveted the rustless steel steel mesh consistent with alien invasion size.
3. vertical sewage purification as claimed in claim 1 and plant cultivation system, is characterized in that described biological filter wall, be not
In the frame structure inner space that rust steel steel mesh is surrounded, after filling biofilter material, form the structuring of similar body of wall layer by layer；
Biofilter material selects quartz sand, anthracite, haydite, Maifanitum, corallite, pelelith, one or more porous of activated carbon, hard
Material, is layered biofilter material or mixes, bottom-up that space filling in biological filter wall is full.
4. vertical sewage purification as claimed in claim 1 and plant cultivation system, is characterized in that described biological filter wall, be not
The rust frame structure internally installed MBR membrane bioreactor that is surrounded of steel steel mesh or other biological membrane assembly, form biology
Filter wall, and vertical sewage purification and plant cultivation system is collectively constituted with plant walls.
5. vertical sewage purification as claimed in claim 1 and plant cultivation system, is characterized in that described plant walls, the most attached
On the rustless steel steel mesh of each alien invasion of frame structure, and by fully wrapped around for rustless steel steel mesh live；Described plant walls is by planting
Blanket and planting bag composition, planting carpet and planting bag all use non-woven fabrics anticorrosive, that water-permeable and air permeable is good or other have identical
Geotextiles or the woollen blanket material of performance are made, being sewed together with rustless steel steel mesh of planting carpet secure rigid, planting bag
Sew line by line on planting carpet, in planting bag, have the cultivation matrix of the applicable plant growing of water-retaining property and good air permeability.
6. vertical sewage purification as claimed in claim 1 and plant cultivation system, is characterized in that described spray pipe net, be positioned at life
Above thing filter wall, including water pump, water inlet pipe, spray pipe net, shower nozzle；Water pump is positioned at outdoor landscape pond or indoor fish jar, logical
Cross water inlet pipe to communicate with the water emitting portion of spray pipe net, below spray pipe net, be evenly distributed with multiple shower nozzle, spray pipe net sprays
The installation quantity of head is corresponding with biological filter wall and plant walls with position, and the sewage making spray pipe net spray can be uniform toward dirty
Cross biological filter wall and plant walls.
7. the vertical sewage purification as described in claim 1 or 6 and plant cultivation system, is characterized in that, because of making of biological filter wall
Type is different, and the spray pipe net described in claim 1 or 6 is difficult to realize entering special-shaped biological filter wall and plant walls attached thereto
When row uniformly waters, should install accurate drip irrigation equipment and substitute above-mentioned spray pipe net, drip irrigation equipment is connected with water pump and water inlet pipe
Connect, by the way of drip irrigation, realize the uniform pouring to biological filter wall and plant walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620404605.1U CN205710320U (en) | 2016-05-08 | 2016-05-08 | Vertical sewage purification and plant cultivation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620404605.1U CN205710320U (en) | 2016-05-08 | 2016-05-08 | Vertical sewage purification and plant cultivation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205710320U true CN205710320U (en) | 2016-11-23 |
Family
ID=57303899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620404605.1U Active CN205710320U (en) | 2016-05-08 | 2016-05-08 | Vertical sewage purification and plant cultivation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205710320U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107344757A (en) * | 2016-05-08 | 2017-11-14 | 秦立 | Vertical sewage purification and plant cultivation system |
| CN107364973A (en) * | 2017-09-05 | 2017-11-21 | 秦立 | A kind of sewage disposal system and its application and sewage water treatment method |
| CN107879475A (en) * | 2017-09-30 | 2018-04-06 | 浙江大学 | The three-dimensional artificial marsh sewage treatment system of Vertical Flow and sewage water treatment method |
-
2016
- 2016-05-08 CN CN201620404605.1U patent/CN205710320U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107344757A (en) * | 2016-05-08 | 2017-11-14 | 秦立 | Vertical sewage purification and plant cultivation system |
| CN107364973A (en) * | 2017-09-05 | 2017-11-21 | 秦立 | A kind of sewage disposal system and its application and sewage water treatment method |
| CN107364973B (en) * | 2017-09-05 | 2020-12-29 | 秦立 | Sewage treatment system, application thereof and sewage treatment method |
| CN107879475A (en) * | 2017-09-30 | 2018-04-06 | 浙江大学 | The three-dimensional artificial marsh sewage treatment system of Vertical Flow and sewage water treatment method |
| CN107879475B (en) * | 2017-09-30 | 2021-01-08 | 浙江大学 | Vertical flow three-dimensional constructed wetland sewage treatment system and sewage treatment method |
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