CN109437407A - A method of based on root system of plant system hardening artificial swamp Removal - Google Patents
A method of based on root system of plant system hardening artificial swamp Removal Download PDFInfo
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- CN109437407A CN109437407A CN201811635609.0A CN201811635609A CN109437407A CN 109437407 A CN109437407 A CN 109437407A CN 201811635609 A CN201811635609 A CN 201811635609A CN 109437407 A CN109437407 A CN 109437407A
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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
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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
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Abstract
The present invention relates to a kind of methods based on root system of plant system hardening artificial swamp Removal, it first passes through the hair root induction liquid containing root-inducing powder and carries out the amplification of root system of plant system and its rejuvenation of impaired root system, generate well developed root system, quantity is enriched, the good root system system of root system, the root system system expanded is carried out to the induction of root system Surface Fe film afterwards, and will cultivate that treated in artificial swamp bulbous rush is used for sewage treatment, it being capable of reinforced phosphor-removing efficiency.The present invention has been able to ascend that root system of plant system microorganism is rich and diversity, promote the progress of phosphorous removal biochemical reaction, and root system Surface Fe film can be used as the repository of plant nutrient, improve the resistance and adaptive capacity to environment of plant, not only simple process, easy to operate, low in cost, it is convenient for large-scale promotion application, there are good economy, environment and ecological benefits, while good landscape effect can be received.
Description
Technical field
The present invention relates to the Ecological Disposal fields of polluted-water, are based on root system of plant system hardening people more particularly to one kind
The method of work wetland Removal, especially a kind of formation for inducing bulbous rush root system Surface Fe film and strengthened artificial are wet
The method of ground Removal.
Background technique
Artificial swamp is mainly combined by water plant and host material is built-up, passes through physics, chemistry and microorganism
Three's synergistic effect purifies water.Currently, it is relatively more using the pollutant kind that artificial wet land system can remove, not only may be used
To remove the Conventional pollution in general city domestic sewage, while some organic pollutants difficult to degrade can also be removed,
Including venomous injurants such as phenol wastewater, polycyclic aromatic hydrocarbon, petroleum alkanes.Constructed wetland waste water treatment technology is because of its operational management side
Just, the advantages that ecological, environmental protective, low in cost, beautification of landscape, while having both good environmental benefit and economic benefit, at present by
It is widely used in multiple necks such as industrial wastewater, sanitary sewage, breeding wastewater, petroleum production wastewater and water eutrophication improvement
Domain.
Since the dephosphorization of wetland relies primarily on matrix absorption, Removal is low, is not able to satisfy the need of effluent quality target
It asks.Currently, mainly improving people from pretreatment facility (reducing nitrogen and phosphorus load in water inlet), matrix, foliage filter screening and configuration etc.
The effect of work wetland dephosphorization, such as: add efficient sedimentation tank, filling blast furnace slag and cinder etc..But this method is easy to lead to technique
Tediously long, operational management is inconvenient, and construction cost is caused to improve, construct the problems such as complicated.
Wetland plant is the important component of artificial wet land system, the important feature of wetland plant first is that root system has
Oxygen in atmosphere can efficiently be transported root table by oxidability, and rhizosphere is made to form the region with high oxidation characteristic.
Fe (II) near root system is oxidized to Fe (III) and is deposited on root system surface by the oxygen function of secreting of root system, and formation is evident that
Fe oxide plaque.Because it with biggish surface area and has positive and negative charge group, can be made by adsorbing and being co-precipitated etc.
With, significantly improve wetland plant abatement pollutant ability, especially to the absorption and conversion capability of phosphorus.
Therefore, the formation of amplification root system of plant system and induction root system of plant Surface Fe film, strengthened artificial wet land can be passed through
Phosphor-removing effect reduces the construction cost of artificial swamp with this, extends the wetland service life.
Summary of the invention
The purpose of the present invention is overcoming in existing Artificial Wetland Techniques, plant absorption changing effect is poor, root system system microorganism
The problems such as matrix that type and quantity are less, rely primarily on matrix dephosphorization is faced saturation, provide a kind of plant anti-pollution characteristic it is strong,
Root system of plant system microorganism is rich good, low in cost, ecological, environmental protective based on plant with diversity raising, water remediation effect
The method of object root system system hardening artificial swamp dephosphorization, also provide a kind of step be simple and convenient to operate, the plant of lower production costs
The integrated processes of object root system system amplification and root system Surface Fe film induced synthesis.
To achieve the above object, the present invention provides the sides of a kind of amplification of root system of plant system and the induction of root system Surface Fe film
Method includes the following steps:
The growth that bulbous rush is damaged root system and induction hair root is repaired using the hair root induction liquid containing root-inducing powder, it is complete
It is expanded at root system of plant system, wherein root-inducing powder concentration is 100~150mg/L in the hair root induction liquid；
The root system system of object root system system amplification will be completed, is cultivated in the iron film induction liquid under low-phosphorous environment, induce root
It is that system surfaces form iron film, wherein the concentration of the iron film induction liquid is 120~150mg/L, phosphorus in the low-phosphorous environment
Concentration is 0.03~0.05mmol/L.
The present invention also provides a kind of method based on root system of plant system hardening artificial swamp Removal, including it is as follows
Step:
A, at room temperature, by bulbous rush seedling in the Manual moist equipped with the hair root induction liquid containing root-inducing powder
Rejuvenation and hair root amplification cultivation are carried out in groundbed, the extension and growth of root system are induced by adjusting wetland bed water level, to plant
After growing a large amount of adventitious root, hair root and new plant, the amplification of root system of plant system is completed, wherein in the hair root induction liquid
Root-inducing powder concentration is 100~150mg/L；
B, iron film is added in constructed wetland bed after completing the amplification of root system of plant system and induces liquid, control wetland bed bottom
Middle DO content, induction root system system surfaces form iron film, wherein and iron film induction liquid is in low-phosphorous environment in artificial swamp,
Fe (II) concentration is 120~150mg/L in iron film induction liquid, in the low-phosphorous environment phosphorus concentration be 0.03~
0.05mmol/L；
C, successively cultivating that treated through step A, step B, bulbous rush is used at sewage in artificial swamp
Reason, reinforced phosphor-removing efficiency.
Preferably, in step, bulbous rush root system system amplification cultivation step includes:
By bulbous rush seedling according to 10~20 plants/m2Planting density plantation in root-inducing powder concentration be 100~
In the constructed wetland bed of the hair root induction liquid of 150mg/L, water level control is flooded completely in root system of plant system does not have position, that is, plants
Object root system is flooded not completely, carries out plant culture；
2~3d is cultivated after plant grows fine, it is high to regulate and control water level in constructed wetland bed according to plant root growth situation
Degree, it is that 1.5~2.0cm continues to cultivate, directly after bulbous rush Adaptable growth that water level, which is maintained root system submergence height,
Stop root system of plant system when plant grew well between 90% or so and culture period to bulbous rush root system hair root coverage rate
System amplification cultivation.
Preferably, in stepb, induction bulbous rush root system system surfaces formed iron film the following steps are included:
In the growth room of controllable light temperature, constructed wetland bed Central Plains nutrient solution is vented, is cleaned 2~3 times with tap water, weight
New that tap water is added, water level maintains normal high water level (N.H.W.L.) position, and pH control is 3.5~6.5 in water；
When DO content is lower than 0.2mg/L, be added concentration of iron be 120~150mg/L, phosphorus concentration be 0.03~
The iron film of 0.05mmol/L induces liquid, keeps bulbous rush root system system to be immersed in iron film induction liquid, induction time 5
~7d, until rufous, which occurs, in root system system completes the induction of root system Surface Fe film.
Preferably, the constructed wetland bed is welded by PVC board, the constructed wetland bed both ends be filled with partial size be 3~
For the rubble of 5cm respectively as water distribution and gathering ground, middle section is filled with zeolite and haydite as matrix；And engineering artificial swamp structure
When building, iron film first is formed using the wetland bed progress root system of plant system amplification of modularized artificial and induction root system system surfaces,
The building of engineering artificial swamp is completed further according to constructed wetland bed is combined by modularization assemble.
Preferably, it is 1.5m × 1.5m × 0.5m that the specification of the constructed wetland bed, which is length × width × height, the rubble grain
Diameter is 3~5cm, and the filling thickness of the matrix is 45cm.
Preferably, the component of the hair root induction liquid includes the KNO of 600~650mg/L3, 500~550mg/L
MgSO4·7H2O, the Ca (NO of 800~1000mg/L3)2·4H2O, the NH of 0.20~0.35mg/L4H2PO4, 2.50~3.50mg/
The MnSO of L4·H2O, the CuSO of 0.05~0.15mg/L4·5H2O, the ZnSO of 0.15~0.25mg/L4·7H2And 0.05 O,
(the NH of~0.15mg/L4)6Mo7O24·4H2O。
Preferably, the iron film induction liquid is Fe (II)-EDTA solution.
Preferably, iron film is formed in root system of plant system amplification cultivation and induction bulbous rush root system system surfaces
When, environment temperature is 18~27 DEG C, and daily in 12h, the 12h in dark under illumination, intensity of illumination is 200~360 μm of ol/
(m2S), relative humidity is 65%~75%.
Preferably, in controlling wetland bed bottom when DO content, the DO content passes through setting constructed wetland bed surface
Adjustable to have blind patch to be regulated and controled, the DO concentration passes through the dissolved oxygen monitoring probe being arranged in constructed wetland bed and carries out
Real-time monitoring.
Preferably, the constructed wetland bed is the body structure of surrounding and bottom surface aperture, the square of uncovered or cuboid,
Module specifications are that length × width is 0.5~1.0m × 0.5~1.0m, and height, matrix fill are set according to target artificial swamp engineering
Meter requires to be configured.
Based on the above-mentioned technical proposal, the invention has the advantages that
The present invention carries out the amplification of bulbous rush root system using the hair root induction liquid containing root-inducing powder, can not only promote
Diauxic growth and induction into root system of plant hair root, while can also be to reparation and the hair root system in Induction Process, being damaged root system
The rejuvenation effect of system enhances root activity, ensures the health and stability of the root system system that amplification cultivation is formed, and can guarantee
The good growth on plant top is conducive to plant and well adapts to environment in wetland operational process, shortens the laundering period.Lead to simultaneously
Liquid level in artificial regulation constructed wetland bed is crossed, the longitudinal of induction bulbous rush root system extends, and promotes root system hair root
Growth and root system surface formed iron film.
The present invention not only simple process, it is easy to operate, low in cost can carry out large-scale promotion application, but also can lead to
The formation for crossing induction bulbous rush root system Surface Fe film improves the phosphor-removing effect of artificial wet land system, while huge root system
System provides more attachment sites for the growth of microorganism, improves that root system of plant system microorganism is rich and diversity,
Promote the progress of phosphorous removal biochemical reaction, and root system Surface Fe film can be used as the repository of plant nutrient, improves the anti-of plant
Inverse property and adaptive capacity to environment.This method is applicable in economy plant and landscape plant simultaneously, has good economy, ring
Border and ecological benefits, while good landscape effect can be received.
In engineer application, the present invention is induced using the wetland bed progress root system amplification of modularized artificial and iron film, then root
The building of engineering artificial swamp is completed by modular combination according to requirement of engineering, avoid during plant transplantation the damage of root system and
The damage for leading to iron film quantity and thickness is influenced by other environmental factors, guarantees the physics and chemical property of root system Surface Fe film
Original and integrality.
Specific embodiment
Below by embodiment, technical scheme of the present invention will be described in further detail.
The present invention is strengthened by the amplification and induction of root system of plant system and forms root system Surface Fe film, is realized and is improved Manual moist
Ground phosphor-removing effect.The amplification of the root system of plant system is to induce liquid to repair bulbous rush by the hair root containing root-inducing powder
Impaired root system and the growth for inducing hair root generate well developed root system, quantity is enriched, the good root system system of root system；The root system table
The induction of face iron film is the root system system completed based on amplification, under the conditions of low-phosphorous, is cultivated in iron film induction liquid, induction generates
The plant that iron film thickness is suitable for and grows fine.
Specifically, the present invention provides the methods of a kind of amplification of root system of plant system and the induction of root system Surface Fe film, including
Following steps:
The growth that bulbous rush is damaged root system and induction hair root is repaired using the hair root induction liquid containing root-inducing powder, it is complete
It is expanded at root system of plant system, wherein root-inducing powder concentration is 100~150mg/L in the hair root induction liquid；It will complete object root system
The root system system of system amplification is cultivated in the iron film induction liquid under low-phosphorous environment, and induction root system system surfaces form iron film,
In, the concentration of the iron film induction liquid is 120~150mg/L, and phosphorus concentration is 0.03~0.05mmol/ in the low-phosphorous environment
L。
Further, the present invention also provides a kind of method based on root system of plant system hardening artificial swamp Removal,
Include the following steps:
A, at room temperature, by bulbous rush seedling in the Manual moist equipped with the hair root induction liquid containing root-inducing powder
Rejuvenation and hair root amplification cultivation are carried out in groundbed, the extension and growth of root system are induced by adjusting wetland bed water level, to plant
After growing a large amount of adventitious root, hair root and new plant, the amplification of root system of plant system is completed.Wherein, in the hair root induction liquid
Root-inducing powder concentration is 100~150mg/L.
B, after completing the amplification of root system of plant system, by hair root induction liquid emptying, after being cleaned with clear water, according to root system surface
The optimum condition of iron film induction is added iron film in constructed wetland bed and induces liquid, guarantees that plant root is completely soaked wherein.Control
DO content in wetland bed bottom, induction root system system surfaces form iron film, ensure the condition of iron film induction, until root system of plant table
There is rufous in face, and plant top is non-yellowing, not wither be best.Wherein, iron film induction liquid is in low in artificial swamp
In phosphorus environment, Fe (II) concentration is 120~150mg/L in the iron film induction liquid, and phosphorus concentration is in the low-phosphorous environment
0.03~0.05mmol/L.
C, successively cultivating that treated through step A, step B, bulbous rush is used at sewage in artificial swamp
Reason, reinforced phosphor-removing efficiency.
Preferably, in step, bulbous rush root system system amplification cultivation step includes:
1), by bulbous rush seedling according to 10~20 plants/m2Planting density plantation in root-inducing powder concentration be 100~
In the constructed wetland bed of the hair root induction liquid of 150mg/L, carries out rejuvenation and amplification cultivation, water level control are complete in root system of plant system
It is flooded entirely and does not have position, i.e., root system of plant system is flooded completely, carries out plant culture.Environment temperature is 18~27 DEG C, daily
In 12h, the 12h in dark under illumination, intensity of illumination is 200~360 μm of ol/ (m2S), relative humidity be 65%~
75%.
Preferably, the constructed wetland bed is welded by PVC board, the constructed wetland bed both ends be filled with partial size be 3~
For the rubble of 5cm respectively as water distribution and gathering ground, middle section is filled with zeolite and haydite as matrix.In engineering artificial swamp structure
When building, iron film first is formed using the wetland bed progress root system of plant system amplification of modularized artificial and induction root system system surfaces,
The building of engineering artificial swamp is completed further according to engineering constructed wetland bed is combined by modularization assemble.
The constructed wetland bed is the body structure of surrounding and bottom surface aperture, the square of uncovered or cuboid, module rule
Lattice are that length × width is 0.5~1.0m × 0.5~1.0m, and highly consistent with target artificial swamp, internal matrix filler is according to mesh
Mark Design of Constructed Wetland requires to be configured.It is highly preferred that the specification of the constructed wetland bed is 1.5m × 1.5m × 0.5m.Institute
Stating ballast grain sizes is 3~5cm, and the filling thickness of the matrix is 45cm.
The component of the hair root induction liquid includes the KNO of 600~650mg/L3, 500~550mg/L MgSO4·7H2O、
Ca (the NO of 800~1000mg/L3)2·4H2O, the NH of 0.20~0.35mg/L4H2PO4, 2.50~3.50mg/L MnSO4·
H2O, the CuSO of 0.05~0.15mg/L4·5H2O, the ZnSO of 0.15~0.25mg/L4·7H2And 0.05~0.15mg/L O,
(NH4)6Mo7O24·4H2O。
2), 2~3d of culture is after plant grows fine, and by adjusting flowing water Valve, regulates and controls people according to root growth situation
The wetland bed middle height of water level of work, it is 1.5~2.0cm that water level, which is maintained root system submergence height, and induction plant hair root longitudinally extends,
Root system of plant hair root is promoted to grow；
3), after bulbous rush Adaptable growth, continue to cultivate, until bulbous rush root system hair root coverage rate exists
Stop root system of plant system amplification cultivation between 90% or so and culture period when plant grew well.
Further, in stepb, induction bulbous rush root system system surfaces formed iron film the following steps are included:
1), in the growth room of controllable light temperature, constructed wetland bed Central Plains nutrient solution is vented, cleans 2~3 with tap water
It is secondary, tap water is rejoined, water level maintains normal high water level (N.H.W.L.) position, and according to the optimal condition that iron film induces, pH is controlled in water
For system in 3.5~6.5 (cannot be below 3.5), environment temperature is 18~27 DEG C, is in 12h under illumination, the 12h in dark daily,
Intensity of illumination is 200~360 μm of ol/ (m2S), relative humidity is 65%~75%.
2), when DO content is lower than 0.2mg/L, be added concentration of iron be 120~150mg/L, phosphorus concentration be 0.03~
The iron film of 0.05mmol/L induces liquid, keeps bulbous rush root system system to be immersed in iron film induction liquid, induction time 5
~7d is induced until rufous completion root system Surface Fe film occurs in root system system, and plant is non-yellowing, does not wither on the whole process water surface
It is best.
Preferably, the iron film induction liquid is Fe (II)-EDTA solution.The present invention use Fe (II)-EDTA solution as
Iron film induce liquid, (II) nutrient solution containing Fe is consistent with the existence form of iron in the soil liquid, in waterflooding environment Fe (III) content compared with
Few, Fe (II) is strong in the iron membrane stability that root table is formed, and durable, thickness is big.And according to FeSO4Or FeCl2Solution Fe
(II) stability is poor, is easily oxidized in the nutrient solution that pH is 6.5.The present invention is used as source of iron using Fe (II)-EDTA, holds
Legibility in aerobic and oxidizing substance for the Fe (II) dissociated at once from being easily oxidized, cause in the plant for discharging oxidizing substance
Object root system surface forms iron film.
The present invention is that the induction of root system Surface Fe film is carried out under conditions of phosphate starvation, can reduce plant in P deficiency condition
The elongation of object primary root promotes the development of secondary root, while hair root can increase with surface area, is conducive to crop and absorbs nutrient.
And it lacks phosphorus environment and improves root activity, increase accordingly the ability of root system release oxidizing substance, there is no phosphorus in nutrient solution
Element exists, and has lacked " bridge " for forming stable comple, in this environment, ferrous iron be easier to be oxidized to ferric iron and
It is deposited in root table, promotes the formation of root system of plant Surface Fe film.
Preferably, in controlling wetland bed bottom when DO content, the DO content passes through setting constructed wetland bed surface
Adjustable to have blind patch to be regulated and controled, the DO concentration passes through the dissolved oxygen monitoring probe being arranged in constructed wetland bed and carries out
Real-time monitoring.
The amplification of root system system and the formation of induction common rush root system Surface Fe film are used for strengthened artificial wet land system in the present invention
The technical principle of system Removal is as follows:
Root system Surface Fe film is the colloidal film with positive and negative charge, there is preferable enrichment to make the zwitterion in water body
With can mitigate the harm of heavy metal on plants, protect the good growth of plant, while can to enhance root system living for root system Surface Fe film
Power and the effect for activating root table bacterium, promote degradation of the bacterium to organic carbon, mineralising, accelerate the conversion and cycle of carbon in root system, protect
The supply for demonstrate,proving photosynthesis carbon maintains the growth of plant and enhances the resistance of plant.
Root system Surface Fe film can enhance the direct or indirect suction-operated to polluter in water body, while the amplification of root system
More attachment points are provided for microorganism, the biological richness and diversity on root system surface is improved, is obviously improved microorganism
Nitration denitrification efficiency, reinforcing effect.
The present invention carries out the amplification of bulbous rush root system using the hair root induction liquid containing root-inducing powder, can not only promote
Diauxic growth and induction into root system of plant hair root, while can also be to reparation and the hair root system in Induction Process, being damaged root system
The rejuvenation effect of system enhances root activity, ensures the health and stability of the root system system that amplification cultivation is formed, and can guarantee
The good growth on plant top is conducive to plant and well adapts to environment in wetland operational process, shortens the laundering period.Lead to simultaneously
Liquid level in artificial regulation constructed wetland bed is crossed, the longitudinal of induction bulbous rush root system extends, and promotes root system hair root
Growth and root system surface formed iron film.
The present invention not only simple process, it is easy to operate, low in cost can carry out large-scale promotion application, but also can lead to
The formation for crossing induction bulbous rush root system Surface Fe film improves the phosphor-removing effect of artificial wet land system, while huge root system
System provides more attachment sites for the growth of microorganism, improves that root system of plant system microorganism is rich and diversity,
Promote the progress of phosphorous removal biochemical reaction, and root system Surface Fe film can be used as the repository of plant nutrient, improves the anti-of plant
Inverse property and adaptive capacity to environment.This method is applicable in economy plant and landscape plant simultaneously, has good economy, ring
Border and ecological benefits, while good landscape effect can be received.
The present invention can avoid the damage of root system during plant transplantation by the wetland bed carry out engineer application of modularized artificial
Hurt and influenced by other environmental factors the damage for leading to iron film quantity and thickness, guarantees physics and the change of root system Surface Fe film
Learn the original and integrality of property.
Embodiment 1
In the present embodiment, first pass through containing root-inducing powder hair root induction liquid carry out root system of plant system amplification and its by
The rejuvenation of root system is damaged, generates well developed root system, quantity is enriched, the good root system system of root system；Afterwards by the root system system expanded into
The induction of row root system Surface Fe film.
It is as follows that the step of amplification of root system of plant system forms iron film with induction root system system surfaces is carried out in the present embodiment:
(1) root system system expands: carrying out in 1.5m × 1.5m × 0.5m PVC constructed wetland bed, in constructed wetland bed
(planting density is 16 plants/m for 20 plants of plantation2) bulbous rush, the rubble point of 3~5cm of partial size is inserted at the 15cm of bed body both ends
Not Zuo Wei water distribution and gathering ground, it is highly 45cm that zeolite and haydite are inserted as matrix in middle section；Take the hair containing root-inducing powder
Amplification cultivation is carried out in root induction liquid injection constructed wetland bed, the hair root that root-inducing powder concentration is 100mg/L is added and induces liquid, water level
In root system and the rigid contact position of the water surface, i.e. root system of plant system is flooded completely for control, and 2~3d of culture waits for that plant grows fine
Afterwards, by adjusting flowing water Valve, height of water level in constructed wetland bed is regulated and controled according to root growth situation, water level is maintained into root system
Flooding height is 1.5~2.0cm, and induction plant hair root longitudinally extends, and promotes root system of plant hair root to grow, to bulbous rush
After Adaptable growth, continue to cultivate good to bulbous rush root system hair root coverage rate plant growth between 90% or so and culture period
Stop root system of plant system amplification cultivation when good.
(2) root system Surface Fe film induces: constructed wetland bed Central Plains nutrient solution being vented, is cleaned 2~3 times, is added with tap water
Enter tap water, water level maintains normal higher level, and according to the optimal condition that iron film induces, placing it in environment temperature is 18
~27 DEG C, daily in 12h, the 12h in dark under illumination, intensity of illumination is 200~360 μm of ol/ (m2S), relatively wet
Degree is 65%~75%.When pH is that 3.5~5.0, DO content is lower than 0.2mg/L, addition concentration of iron is 120mg/L, phosphorus concentration is
The iron film of 0.03mmol/L induces liquid-Fe (II)-EDTA solution, guarantees that root system of plant is completely soaked wherein, carries out root system table
The induction of face iron film, induction time 7d, until rufous occurs in root table, and plant is non-yellowing on the water surface, not withering is preferred.
It is purified water effect using the abductive approach strengthened artificial wet land of the present embodiment, specific steps are as follows:
Original culture solution is allowed to dry, extracts sewage into constructed wetland bed, sewage quality is as shown in table 1 below, belongs to bad V
Class.
Table 1: sewage quality is used in experiment
Sewage is put into constructed wetland bed, until sewage is flooded to the discharge outlet of constructed wetland bed.After sewage is put into, transport altogether
Row 60d, hydraulic detention time 3d.After the content of COD drops to no longer variation, more renew a collection of sewage, until every batch of is dirty
After the COD decline rule of water is stablized, experiment stops.Early period the 0th, 2,4,6,10, water sampling for 24 hours, measure COD, the ammonia in sewage
Nitrogen, TN, TP content, each water sample are surveyed 3 times in parallel, after every other day, water sampling measures water quality indicator therein.Simultaneously by this reality
Applying in example has root system Surface Fe film and whether there is or not root system Surface Fe film, control group systems to compare and analyze, as a result such as the following table 2 institute
Show.
Table 2: Contrast on effect of the different root system systems to pollution waters restoration
The result shows that the method for the present embodiment to COD, ammonia nitrogen, TN, TP removal efficiency be respectively 89.26%,
70.28%, 61.29%, 75.56%, wherein having the system of root system Surface Fe film, for improving the dephosphorization of artificial wet land system
Efficiency has unique advantage, has a good application prospect and promotional value in strengthened artificial wet land system Removal.
Embodiment 2
In the present embodiment, first pass through containing root-inducing powder hair root induction liquid carry out root system of plant system amplification and its by
The rejuvenation of root system is damaged, generates well developed root system, quantity is enriched, the good root system system of root system；Afterwards by the root system system expanded into
The induction of row root system Surface Fe film.
It is as follows that the step of amplification of root system of plant system forms iron film with induction root system system surfaces is carried out in the present embodiment:
(1) root system system expands: carrying out in 1.5m × 1.5m × 0.5m PVC constructed wetland bed, in constructed wetland bed
(planting density is 16 plants/m for 20 plants of plantation2) bulbous rush, the rubble point of 3~5cm of partial size is inserted at the 15cm of bed body both ends
Not Zuo Wei water distribution and gathering ground, it is highly 45cm that zeolite and haydite are inserted as matrix in middle section；Take the hair containing root-inducing powder
Amplification cultivation is carried out in root induction liquid injection constructed wetland bed, the hair root that root-inducing powder concentration is 100mg/L is added and induces liquid, water level
In root system and the rigid contact position of the water surface, i.e. root system of plant system is flooded completely for control, and 2~3d of culture waits for that plant grows fine
Afterwards, by adjusting flowing water Valve, height of water level in constructed wetland bed is regulated and controled according to root growth situation, water level is maintained into root system
Flooding height is 1.5~2.0cm, and induction plant hair root longitudinally extends, and promotes root system of plant hair root to grow, to bulbous rush
After Adaptable growth, continue to cultivate, until bulbous rush root system hair root coverage rate plant between 90% or so and culture period is raw
Stop root system of plant system amplification cultivation when long good.
(2) root system Surface Fe film induces: constructed wetland bed Central Plains nutrient solution being vented, is cleaned 2~3 times, is added with tap water
Enter tap water, water level maintains normal higher level, and according to the optimal condition that iron film induces, placing it in environment temperature is 18
~27 DEG C, daily in 12h, the 12h in dark under illumination, intensity of illumination is 200~360 μm of ol/ (m2S), relatively wet
Degree is 65%~75%.When pH is that 3.5~5.0, DO content is lower than 0.2mg/L, addition concentration of iron is 120mg/L, phosphorus concentration is
The iron film of 0.05mmol/L induces liquid-Fe (II)-EDTA solution, guarantees that root system of plant is completely soaked wherein, carries out root system table
The induction of face iron film, induction time 7d, until rufous occurs in root table, and plant is non-yellowing on the water surface, not withering is preferred.
It is purified water effect using the abductive approach strengthened artificial wet land of the present embodiment, specific steps are as follows:
Original culture solution is allowed to dry, extracts sewage into constructed wetland bed, sewage quality is as shown in table 1, belongs to bad V
Class.Sewage is put into constructed wetland bed, until sewage is flooded to the discharge outlet of constructed wetland bed.After sewage is put into, run altogether
60d, hydraulic detention time 3d.After the content of COD drops to no longer variation, more renew a collection of sewage, until every batch of sewage
COD decline rule stablize after, experiment stop.Early period the 0th, 2,4,6,10, water sampling for 24 hours, measure COD in sewage, ammonia nitrogen,
TN, TP content, each water sample are surveyed 3 times in parallel, after every other day, water sampling measures water quality indicator therein.This is implemented simultaneously
There is root system Surface Fe film in example and whether there is or not root system Surface Fe film, control group systems to compare and analyze, as a result as shown in table 3 below.
Table 3: Contrast on effect of the different root system systems to pollution waters restoration
The result shows that the method for the present embodiment to COD, ammonia nitrogen, TN, TP removal efficiency be respectively 92.34%,
75.28%, 65.21%, 78.09%, wherein there is the system of root system Surface Fe film, effluent quality can reach " surface water environment
Quality standard " (GB3838-2002) Group III standard, significantly improve the dephosphorization efficiency of artificial wet land system.
Embodiment 3
In the present embodiment, first pass through containing root-inducing powder hair root induction liquid carry out root system of plant system amplification and its by
The rejuvenation of root system is damaged, generates well developed root system, quantity is enriched, the good root system system of root system；Afterwards by the root system system expanded into
The induction of row root system Surface Fe film.
It is as follows that the step of amplification of root system of plant system forms iron film with induction root system system surfaces is carried out in the present embodiment:
(1) root system system expands: carrying out in 1.5m × 1.5m × 0.5m PVC constructed wetland bed, in constructed wetland bed
(planting density is 16 plants/m for 20 plants of plantation2) bulbous rush, the rubble point of 3~5cm of partial size is inserted at the 15cm of bed body both ends
Not Zuo Wei water distribution and gathering ground, it is highly 45cm that zeolite and haydite are inserted as matrix in middle section；Take the hair containing root-inducing powder
Amplification cultivation is carried out in root induction liquid injection constructed wetland bed, the hair root that root-inducing powder concentration is 100mg/L is added and induces liquid, water level
In root system and the rigid contact position of the water surface, i.e. root system of plant is flooded completely for control, is cultivated 2~3d after plant grows fine, is led to
Flowing water Valve is overregulated, height of water level in constructed wetland bed is regulated and controled according to root growth situation, water level is maintained into root system and is flooded
Height is 1.5~2.0cm, and induction plant hair root longitudinally extends, and promotes root system of plant hair root to grow, adapts to bulbous rush
After growth, continue to cultivate, until bulbous rush root system hair root coverage rate plant growth between 90% or so and culture period is good
Stop root system of plant system amplification cultivation when good.
(2) root system Surface Fe film induces: constructed wetland bed Central Plains nutrient solution being vented, is cleaned 2~3 times, is added with tap water
Enter tap water, water level maintains normal higher level, and according to the optimal condition that iron film induces, placing it in environment temperature is 18
~27 DEG C, daily in 12h, the 12h in dark under illumination, intensity of illumination is 200~360 μm of ol/ (m2S), relatively wet
Degree is 65%~75%.When pH is that 3.5~5.0, DO content is lower than 0.2mg/L, addition concentration of iron is 150mg/L, phosphorus concentration is
The iron film of 0.05mmol/L induces liquid-Fe (II)-EDTA solution, guarantees that root system of plant is completely soaked wherein, carries out root system table
The induction of face iron film, induction time 7d, until rufous occurs in root table, and plant is non-yellowing on the water surface, not withering is preferred.
It is purified water effect using the abductive approach strengthened artificial wet land of the present embodiment, specific steps are as follows:
Original culture solution is allowed to dry, extracts sewage into constructed wetland bed, sewage quality is as shown in table 1, belongs to bad V
Class.Sewage is put into constructed wetland bed, until sewage is flooded to the discharge outlet of constructed wetland bed.After sewage is put into, run altogether
60d, hydraulic detention time 3d.After the content of COD drops to no longer variation, more renew a collection of sewage, until every batch of sewage
COD decline rule stablize after, experiment stop.Early period the 0th, 2,4,6,10, water sampling for 24 hours, measure COD in sewage, ammonia nitrogen,
TN, TP content, each water sample are surveyed 3 times in parallel, after every other day, water sampling measures water quality indicator therein.This is implemented simultaneously
There is root system Surface Fe film in example and whether there is or not root system Surface Fe film, control group systems to compare and analyze, as a result as shown in table 4 below.
Table 4: Contrast on effect of the different root system systems to pollution waters restoration
The result shows that the method for the present embodiment to COD, ammonia nitrogen, TN, TP removal efficiency be respectively 93.19%,
75.36%, 65.09%, 77.26%, wherein there is the system of root system Surface Fe film, effluent quality can reach " surface water environment
Quality standard " (GB3838-2002) Group III standard, the dephosphorization efficiency for improving artificial wet land system has unique
Advantage has a good application prospect and promotional value in strengthened artificial wet land system Removal.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of method of the amplification of root system of plant system and the induction of root system Surface Fe film, characterized by the following steps:
The growth that bulbous rush is damaged root system and induction hair root is repaired using the hair root induction liquid containing root-inducing powder, completes to plant
Object root system system amplification, wherein root-inducing powder concentration is 100~150mg/L in the hair root induction liquid；
The root system system of object root system system amplification will be completed, is cultivated in the iron film induction liquid under low-phosphorous environment, induce root system system
System surface forms iron film, wherein the concentration of the iron film induction liquid is 120~150mg/L, phosphorus concentration in the low-phosphorous environment
For 0.03~0.05mmol/L.
2. a kind of method based on root system of plant system hardening artificial swamp Removal, characterized by the following steps:
A, at room temperature, by bulbous rush seedling in the constructed wetland bed equipped with the hair root induction liquid containing root-inducing powder
Middle progress rejuvenation and hair root amplification cultivation induce the extension and growth of root system by adjusting wetland bed water level, grow to plant
After a large amount of adventitious root, hair root and new plant, the amplification of root system of plant system is completed, wherein take root in the hair root induction liquid
Powder concentration is 100~150mg/L；
B, iron film is added in constructed wetland bed after completing the amplification of root system of plant system and induces liquid, control DO in wetland bed bottom
Content, induction root system system surfaces form iron film, wherein iron film induction liquid is in low-phosphorous environment in artificial swamp, described
It is 120~150mg/L that iron film, which induces Fe (II) concentration in liquid, and phosphorus concentration is 0.03~0.05mmol/ in the low-phosphorous environment
L；
C, successively cultivating that treated through step A, step B, bulbous rush is used for sewage treatment in artificial swamp, by force
Change Removal.
3. the method for strengthened artificial wet land Removal according to claim 2, it is characterised in that: in step, napiform root
Shape rush root system system amplification cultivation step includes:
By bulbous rush seedling according to 10~20 plants/m2Planting density plantation in root-inducing powder concentration be 100~150mg/L
Hair root induction liquid constructed wetland bed in, water level control is flooded completely in root system of plant system does not have position, carry out plant training
It supports；
2~3d is cultivated after plant grows fine, height of water level in constructed wetland bed is regulated and controled according to plant root growth situation, it will
It is that 1.5~2.0cm continues to cultivate after bulbous rush Adaptable growth that water level, which maintains root system submergence height, until napiform root
Shape rush root system hair root coverage rate stops the amplification of root system of plant system between 90% or so and culture period when plant grew well
Culture.
4. the method for strengthened artificial wet land Removal according to claim 3, it is characterised in that: in stepb, induction
Bulbous rush root system system surfaces formed iron film the following steps are included:
In the growth room of controllable light temperature, constructed wetland bed Central Plains nutrient solution is vented, cleans 2~3 times with tap water, again plus
Enter tap water, water level maintains normal high water level (N.H.W.L.) position, and pH control is 3.5~6.5 in water；
When DO content is lower than 0.2mg/L, addition concentration of iron is 120~150mg/L, phosphorus concentration is 0.03~0.05mmol/L's
Iron film induces liquid, keeps bulbous rush root system system to be immersed in iron film induction liquid, induction time is 5~7d, until root system
There is rufous and completes the induction of root system Surface Fe film in system.
5. the method for strengthened artificial wet land Removal according to claim 2 or 3, it is characterised in that: the Manual moist
Groundbed is welded by PVC board, and the constructed wetland bed both ends are filled with rubble respectively as water distribution and gathering ground, and middle section is filled out
There are zeolite and haydite as matrix；And when the building of engineering artificial swamp, the wetland bed carry out plant roots of modularized artificial are first used
System amplification and induction root system system surfaces form iron film, are combined into engineering constructed wetland bed further according to by modularization assemble
Complete the building of engineering artificial swamp.
6. according to the method for strengthened artificial wet land Removal described in claim 2,3 or 4, it is characterised in that: the hair root
The component of induction liquid includes the KNO of 600~650mg/L3, 500~550mg/L MgSO4·7H2O, the Ca of 800~1000mg/L
(NO3)2·4H2O, the NH of 0.20~0.35mg/L4H2PO4, 2.50~3.50mg/L MnSO4·H2O, 0.05~0.15mg/L
CuSO4·5H2O, the ZnSO of 0.15~0.25mg/L4·7H2And (the NH of 0.05~0.15mg/L O,4)6Mo7O24·
4H2O。
7. according to the method for strengthened artificial wet land Removal described in claim 2,3,4 or 7, it is characterised in that: the iron
It is Fe (II)-EDTA solution that film, which induces liquid,.
8. the method for strengthened artificial wet land Removal according to claim 7, it is characterised in that: in root system of plant system
When amplification cultivation and induction bulbous rush root system system surfaces form iron film, environment temperature is 18~27 DEG C, is in daily
12h, the 12h in dark under illumination, intensity of illumination are 200~360 μm of ol/ (m2S), relative humidity is 65%~75%.
9. according to the method for strengthened artificial wet land Removal described in claim 2,3,4 or 7, it is characterised in that: controlling
In wetland bed bottom when DO content, the DO content has blind patch to be adjusted by the way that the adjustable of constructed wetland bed surface is arranged
Control, the DO concentration pass through the dissolved oxygen monitoring probe being arranged in constructed wetland bed and carry out real-time monitoring.
10. the method for strengthened artificial wet land Removal according to claim 2, it is characterised in that: the artificial swamp
Bed is the body structure of surrounding and bottom surface aperture, the square of uncovered or cuboid, and Module specifications are that length × width is 0.5~1.0m
× 0.5~1.0m, height, matrix fill are configured according to target artificial swamp engineering design requirements.
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