CN110451651A - A kind of drowned flow artificial wet land and its application - Google Patents
A kind of drowned flow artificial wet land and its application Download PDFInfo
- Publication number
- CN110451651A CN110451651A CN201910834342.6A CN201910834342A CN110451651A CN 110451651 A CN110451651 A CN 110451651A CN 201910834342 A CN201910834342 A CN 201910834342A CN 110451651 A CN110451651 A CN 110451651A
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- Prior art keywords
- water
- artificial wet
- flow artificial
- drowned flow
- wet land
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Classifications
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The present invention relates to water body treating technical fields, and in particular to a kind of drowned flow artificial wet land and its application.The present invention provides a kind of drowned flow artificial wet lands, including water distributing area, purifying area and the gathering ground set gradually, denitrogenation matrix are provided in the water distributing area, the denitrogenation matrix includes plant residue and iron plane flower.The present invention can effectively reduce the accumulation of nitrite nitrogen in denitrification process, to reduce the discharge of nitrous oxide using the mixture of plant residue and iron plane flower as denitrogenation matrix；In addition, plant residue is as biomass carbon source, wherein organic carbon is mainly derived from the carbon dioxide in atmosphere, and the increase of atmospheric carbon dioxide levels will not be additionally caused in degradation process, can reduce the discharge of denitrification process percent of greenhouse gases；In addition drowned flow artificial wet land structure provided by the invention is simple, is suitable for large-scale promotion application.
Description
Technical field
The present invention relates to water body treating technical fields, and in particular to a kind of drowned flow artificial wet land and its application.
Background technique
In recent years, artificial swamp is widely used in the purification and recovery, the control of pollution of area source, initial rainfall of water quality
Processing and municipal sewage plant's tail water advanced treating.But artificial swamp is applied to low-carbon high-nitrogen class contaminant water
Processing, if addition heterotrophism carbon source, can not only improve processing cost due to carbon source deficiency there are biggish difficulty, also may be used
It can cause secondary pollution.Meanwhile in artificial swamp normal kind be implanted with water plant, such as reed, yellow flag, cattail, canna, if
Negligence of management makes these plants wither and fall inside wetland decomposition, will cause the deterioration of effluent quality, if in withering period to plant
It is gathered in, gathering in the plant residue to get off is also that a kind of solid waste needs otherwise processed.In addition, some researches show that people
Work wetland is important greenhouse gases especially methane (CH4) and nitrous oxide (N2O emission source), greenhouse gas emissions
About 2~10 times of natural wetland.Therefore, how to improve the nitric efficiency of low-carbon high-nitrogen class contaminant water, solve carbon source it is insufficient,
The plant residue of rationally disposition harvesting and control wetland greenhouse gas emission are still faced with huge technology barrier.
Summary of the invention
The purpose of the present invention is to provide a kind of drowned flow artificial wet land and its applications, using drowned flow artificial provided by the invention
Wetland can be improved low ratio of carbon to ammonium water body denitrification effect, and reduce the discharge of greenhouse gases, and structure is simple, be suitable for large-scale promotion
Using.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of drowned flow artificial wet lands, described including water distributing area, purifying area and the gathering ground set gradually
Denitrogenation matrix is provided in water distributing area, the denitrogenation matrix includes plant residue and iron plane flower.
Preferably, the average-size of the plant residue is (4~25) mm × (4~25) mm, the width of the iron plane flower
For 10~40mm, length is 100~150mm.
Preferably, the mass ratio of the plant residue and iron plane flower is (0.8~1.5): (1.0~2.5).
It preferably, further include water inlet pipe and outlet pipe, the water inlet pipe is connected with the water inlet of the water distributing area, described
Outlet pipe is connected with the water outlet of the gathering ground.
It preferably, further include the first perforation tracery wall and the second perforation tracery wall, the first perforation tracery wall is set to described match
Between pool and purifying area, the second perforation tracery wall is set between the purifying area and gathering ground.
Preferably, gravel is distributed in the purifying area.
Preferably, the partial size of the gravel is 4~6cm.
Preferably, the purifying area further includes water plant, and the water plant planting is in the top of the gravel.
Preferably, the withered cauline leaf of the water plant and the water plant cauline leaf of harvesting are used as plant residual after processing
Body is placed in water distributing area.
The present invention also provides the answering in processing low ratio of carbon to ammonium water body of the drowned flow artificial wet land described in above-mentioned technical proposal
With.
The present invention provides a kind of drowned flow artificial wet lands, described including water distributing area, purifying area and the gathering ground set gradually
Denitrogenation matrix is provided in water distributing area, the denitrogenation matrix includes plant residue and iron plane flower.In the present invention, the master of iron plane flower
Wanting ingredient is fe, can promote the generation of biological denitrification process as electron donor in water environment；In addition, plant is residual
Organic carbon can be released in body decay process, wherein about 30% is humic acid ingredient, humic acid potentially acts as fe electronics and wears
The effect of shuttle body effectively improves the intensified anti-nitrated ability of fe transmitting electronics.The present invention spends plant residue and iron plane
Mixture can effectively reduce the accumulation of nitrite nitrogen in denitrification process as denitrogenation matrix, to reduce nitrous oxide
Discharge；In addition, plant residue is as biomass carbon source, wherein organic carbon is mainly derived from the carbon dioxide in atmosphere, is dropping
The increase that atmospheric carbon dioxide levels will not be additionally caused in solution preocess, can reduce the row of denitrification process percent of greenhouse gases
It puts；In addition drowned flow artificial wet land structure provided by the invention is simple, is suitable for large-scale promotion application.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of drowned flow artificial wet land of the present invention；
Fig. 2 is the top view of drowned flow artificial wet land of the present invention；
Wherein, 1- water inlet pipe, the water distributing area 2-, 3- purifying area, the gathering ground 4-, 5- outlet pipe, 6- gravel, 7- water plant,
8- mesh bag, 9- plant residue, 10- reinforcing bar, 11- nylon rope, the perforation tracery wall of 12- first；The perforation tracery wall of 13- second.
Specific embodiment
The present invention provides a kind of drowned flow artificial wet lands, described including water distributing area, purifying area and the gathering ground set gradually
Denitrogenation matrix is provided in water distributing area, the denitrogenation matrix includes plant residue and iron plane flower.
Drowned flow artificial wet land provided by the invention includes water distributing area.In the present invention, the planar dimension of the water distributing area is excellent
It is selected as (8~12) m × (0.8~1.2) m, more preferably 9m × 1m.In the present invention, denitrogenation base is provided in the water distributing area
Matter, the denitrogenation matrix include plant residue and iron plane flower.In the present invention, the plant residue preferably include calamus residuum,
Cattail residuum, reed residuum or canna residuum；The average-size of the plant residue is preferably (4~25) mm × (4~25)
Mm, more preferably (6~15) mm × (6~15) mm, most preferably 6mm × 6mm.In the present invention, the iron plane, which is spent, preferably comes
The leftover pieces generated in steel process；The width of the iron plane flower is preferably 10~40mm, and more preferably 15mm is long
Degree is preferably 100~150mm, more preferably 100mm.
In the present invention, the mass ratio of the plant residue and iron plane flower is preferably (0.8~1.5): (1.0~2.5), more
Preferably 1:(1.5~2).
The denitrogenation matrix is preferably placed in mesh bag by the present invention, is hung in the water body of water distributing area.In the present invention, described
The material of mesh bag is preferably nylon；The mesh aperture of the mesh bag is preferably 3~5mm, more preferably 4mm；The mesh bag is preferred
It is placed at 10~15cm of underwater.In the present invention, the number of the mesh bag is preferably 3~6, and more preferably 4；Adjacent institute
Stating the horizontal spacing between mesh bag is preferably 150~400mm, more preferably 200mm；Longitudinal pitch is preferably 400~1000mm,
More preferably 500mm.
In the present invention, the quality of the denitrogenation matrix and the proportionate relationship of inflow are preferably (1~1.3) kg:1m3/
D, the replacement cycle of the denitrogenation matrix are preferably 4~5 days.
As an embodiment of the present invention, the drowned flow artificial wet land further includes water inlet pipe, the water inlet pipe with it is described
The water inlet of water distributing area is connected, for conveying raw water to be processed into water distributing area.
Drowned flow artificial wet land provided by the invention preferably includes the purifying area being connected to the water outlet of the water distributing area.At this
In invention, the planar dimension of the purifying area is preferably (6~9) m × (0.8~1.2) m, more preferably 8m × 1m.In the present invention
In, preferred distribution has gravel in the purifying area, and the partial size of the gravel is preferably 4~6cm.In the present invention, the gravel
Attachment carrier can be provided for nitrification, denitrifying bacterium；The present invention can be effectively prevent using the gravel of above-mentioned particle size range simultaneously
The blockage problem of current wetland.
In the present invention, it is also preferable to include water plants, the water plant preferably to plant in the gravel for the purifying area
The top of stone.In the present invention, the water plant preferably includes calamus, cattail, reed or canna.When the water plant
Preferably calamus when, the planting density of the calamus is preferably (9~25) strain/m2, more preferably 16 plants/m2.In the present invention,
Water plant on the one hand can absorb water in nitrogen be used for own growth, another aspect water plant secrete oxygen effect can be in root shape
At numerous Aerobic-anaerobic microcells, promote the growth of nitrification, denitrifying bacterium；The root exudates of water plant can be used as carbon simultaneously
Source is to strengthen the denitrification effect of drowned flow artificial wet land；In addition, the withered branches and leaves of water plant and the water plant cauline leaf of harvesting,
It can be placed in water distributing area as plant residue and improve nitric efficiency with iron plane flower mating reaction.The present invention is preferably by water plant
Withered branches and leaves and harvesting be placed in water distributing area as plant residue after water plant cauline leaf is cleaned and drying and processing.
As an embodiment of the present invention, the drowned flow artificial wet land further includes the first perforation tracery wall, and described first wears
Hole tracery wall is set between the water distributing area and purifying area, enters purifying area by water distributing area with capable of making uniform fluid flow.In this hair
In bright, the aperture of the first perforation tracery wall is preferably (15~25) mm, more preferably 20mm.
Drowned flow artificial wet land provided by the invention preferably includes the gathering ground being connected to the water outlet of the purifying area, is used for
Collect treated water outlet.
As an embodiment of the present invention, the drowned flow artificial wet land further includes the second perforation tracery wall, and described second wears
Hole tracery wall is set between the purifying area and gathering ground, is capable of the water body of uniform collection purifying area processing.In the present invention, institute
The aperture for stating the second perforation tracery wall is preferably (15~25) mm, more preferably 20mm.
As an embodiment of the present invention, the drowned flow artificial wet land further includes outlet pipe, the outlet pipe with it is described
The water outlet of gathering ground is connected, and by treated, water is delivered in storage water body.
The present invention also provides the answering in processing low ratio of carbon to ammonium water body of the drowned flow artificial wet land described in above-mentioned technical proposal
With.The drowned flow artificial wet land is preferably used in the system for handling of sewage treatment plant by the present invention, is particularly preferred as: at sewage
The secondary clarifier effluent of reason factory is delivered in the drowned flow artificial wet land；Nitrate nitrogen content is preferably 9 in the secondary clarifier effluent
~11mg/L, total nitrogen content are preferably 13~15mg/L；The processing water of the drowned flow artificial wet land is preferably (2~3) m3/ d,
More preferably 2.4m3/d.Using drowned flow artificial wet land provided by the invention while improving low ratio of carbon to ammonium water body denitrification effect,
The discharge of greenhouse gases nitrous oxide can also be reduced.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.It is aobvious
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1
Experiment place is Minhang District, Shanghai sewage treatment plant, constructs drowned flow artificial wet land as depicted in figs. 1 and 2,
Secondary clarifier effluent is squeezed into drowned flow artificial wet land by water pump, processing water is 2.4m3/ d, it is nitre that major pollutants, which cut down index,
Hydrochlorate and total nitrogen, the design hydraulic detention time of drowned flow artificial wet land are 2 days；Measurement water inlet in nitrate nitrogen content be 9~
11mg/L, 13~15mg/L of total nitrogen content；
The planar dimension of the drowned flow artificial wet land is 9m × 1m, depth of water 0.6m；Wherein the planar dimension of water distributing area is
0.5m × 1m, depth of water 0.6m, uniformly hang in water distributing area 4 be loaded with by the calamus residuum of drying and processing spent with iron plane it is mixed
Fit nylon net bag, the iron plane flower of calamus residuum and 0.4kg containing 0.2kg, all takes out for every 4 days in each nylon net bag
And more renew the new calamus residuum of a batch and iron plane flower mixture, wherein calamus residuum size is about 6mm × 6mm, iron plane
Colored length is 100mm, width 15mm；The planar dimension of purifying area is 8m × 1m, depth of water 0.6m, the partial size of gravel matrix
For 4~6cm, gravel layer height is 0.6m, and 128 plants of yellow flags are planted on top；The planar dimension of gathering ground is 0.5m × 1m, the depth of water
For 0.6m.
Comparative example 1
It is substantially the same manner as Example 1, it the difference is that only, include calamus residuum and iron plane flower without suspension in water distributing area
The nylon net bag of mixture, as a control group.Specific practice is by secondary clarifier effluent while to squeeze into the latent of embodiment 1 by water pump
The drowned flow artificial wet land of artificial wetland and comparative example 1.
By the drowned flow artificial wet land operation result of embodiment 1 and comparative example 1 it is found that adding calamus residuum and iron plane flower mixing
The drowned flow artificial wet land water outlet total nitrogen of body is 2.85~4.62mg/L, in same period comparative example 1 water outlet total nitrogen be 10.25~
11.46mg/L effectively improves current wetland denitrification effect it follows that calamus residuum is added and mixes physical efficiency with iron plane flower.
Measure the greenhouse gases release iron between 9 points to 13 points this periods, N in embodiment 12The release iron of O is
0.16~0.39mg/ (m2H), N in comparative example 12The release iron of O is 0.36~0.84mg/ (m2H), two groups of drowned flow artificials
Without CH in wetland4Release；The drowned flow artificial wet land CO of embodiment 12Flux is -3870.03mg/ (m2H), with comparison
- 4158.16mg/ (m in example 12H) CO2Flux is substantially suitable, shows as to CO2Absorbing state.Pass through comparative experiments
Find out, calamus residuum and iron plane flower mixture is added while improving current wetland denitrification effect, can reduce greenhouse gases
N2The discharge of O.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of drowned flow artificial wet land, which is characterized in that described to match including water distributing area, purifying area and the gathering ground set gradually
Denitrogenation matrix is provided in pool, the denitrogenation matrix includes plant residue and iron plane flower.
2. drowned flow artificial wet land according to claim 1, which is characterized in that the average-size of the plant residue be (4~
25) mm × (4~25) mm, the width of the iron plane flower are 10~40mm, and length is 100~150mm.
3. drowned flow artificial wet land according to claim 1 or 2, which is characterized in that the matter of the plant residue and iron plane flower
Amount is than being (0.8~1.5): (1.0~2.5).
4. drowned flow artificial wet land according to claim 1, which is characterized in that further include water inlet pipe and outlet pipe, it is described into
Water pipe is connected with the water inlet of the water distributing area, and the outlet pipe is connected with the water outlet of the gathering ground.
5. drowned flow artificial wet land according to claim 1, which is characterized in that further include the first perforation tracery wall and the second perforation
Tracery wall, the first perforation tracery wall are set between the water distributing area and purifying area, and the second perforation tracery wall is set to described
Between purifying area and gathering ground.
6. drowned flow artificial wet land according to claim 1, which is characterized in that gravel is distributed in the purifying area.
7. drowned flow artificial wet land according to claim 6, which is characterized in that the partial size of the gravel is 4~6cm.
8. drowned flow artificial wet land according to claim 6 or 7, which is characterized in that the purifying area further includes water plant,
The water plant planting is in the top of the gravel.
9. drowned flow artificial wet land according to claim 8, which is characterized in that the withered cauline leaf and receipts of the water plant
The water plant cauline leaf cut is used as plant residue to be placed in water distributing area after processing.
10. application of the drowned flow artificial wet land according to any one of claims 1 to 9 in processing low ratio of carbon to ammonium water body.
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Cited By (5)
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| CN111943359A (en) * | 2020-07-24 | 2020-11-17 | 山东大学 | Artificial wetland coupled with iron ore enhanced denitrification, operation method and application |
| CN113461167A (en) * | 2021-07-20 | 2021-10-01 | 上海交通大学 | Construction method of surface flow wetland system |
| CN115259559A (en) * | 2022-07-29 | 2022-11-01 | 中国科学院南京地理与湖泊研究所 | Comprehensive treatment system for domestic sewage and farmland drainage in rural gathering area |
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Application publication date: 20191115 |