CN107500413A - A kind of method for improving low-pollution water denitrogenation dephosphorizing rate - Google Patents
A kind of method for improving low-pollution water denitrogenation dephosphorizing rate Download PDFInfo
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- CN107500413A CN107500413A CN201710889178.XA CN201710889178A CN107500413A CN 107500413 A CN107500413 A CN 107500413A CN 201710889178 A CN201710889178 A CN 201710889178A CN 107500413 A CN107500413 A CN 107500413A
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a kind of method for improving low-pollution water denitrogenation dephosphorizing rate, comprise the following steps：Laid successively from bottom to top in pond：Rubble or boulder bed, small gravel layer, fine sand layer, nutrient soil layer and vermiculite layers are formed artificially；Wetland plant is planted in nutrient soil layer artificially, low-pollution water is poured, in the range of 15 30 DEG C, plant growth 7 14 days, pour low-pollution water containing bacterium and form combined artificial wetland, continue in the range of 15 30 DEG C, plant growth 7 days, makes low-pollution water denitrogenation dephosphorizing.The method of the present invention can improve low-pollution water denitrogenation dephosphorizing rate.Containing the element such as nitrogen phosphorus in low-pollution water, the just nutrient as plant in wetland, and by the absorption to nitrogen phosphorus so as to reaching few discharge of pollution, even zero-emission.
Description
Technical field
The present invention relates to water pollution control and restoration of the ecosystem field, and low-pollution water denitrogenation dephosphorizing is improved more particularly to one kind
The method of rate.
Background technology
At present, nitrogenous, phosphorus sewage a large amount of discharges are the main reason for causing water body in lake eutrophication.At sewage
The raising of reason rate and the horizontal raising of processing sewage, can be with pollution of the sewage of the low-pollution water of qualified discharge to Water Environment In Lakes
Problem is more and more prominent.Although the content of nitrogen and phosphorous can reach standard according to national water quality discharge standard in these low-pollution waters,
They are but higher by several times, even tens times to control quality standard for surface water, and these low-pollution water waters are big, if directly discharging
Certain threat is constituted to natural water body in lake, so needing to continue with.
Low-pollution water has been processed into the problem for administering sewage at present, and therefore, low-pollution water is more paid close attention to.
Artificial Wetland Techniques are a kind of new ecological technique means, and it is common by filler, water plant and microorganism
The system of composition (for aquatic plants growth on filler, microorganism adsorption is on water plant).The mistake of artificial swamp denitrogenation dephosphorizing
Journey is completed jointly by water plant and microorganism, and the ammonia nitrogen in plant absorption water in wetland is with nitrate nitrogen as nutriment
Source, under photosynthesis, it is transformed into the organic nitrogen of the forms such as itself cellular material, synthetic proteins.Artificial swamp removes
Nitrogen is mainly completed by microorganism, and microorganism is nitrified, denitrification process, first under aerobic conditions, by ammonia nitrogen and nitrous state
Nitrogen is changed into nitrate nitrogen, and nitrate nitrogen then is changed into nitrogen under anaerobic, reaches the purpose of nitrogen in water removal.
Plants of Constructed Wetlands and microbial interaction, plant can convey oxygen, form aerobic region in root area, are
Aerobic microbiological group provides suitable growing environment in soil, then suitable and oxygen and anaerobe group beyond root area
Existence, the anaerobic degradation of denitrification and organic matter is carried out, so that different microorganisms is had a role to play, played complementary
Effect.Further, since penetration of the root system of plant to soil media, forms many small air chambers or gap in soil,
The tightness of soil is reduced, enhances the gas porosity of soil, the waterpower of soil is transmitted and is strengthened and maintained.It is so that mixed
The waste water closed in plant unit is easier to enter soil horizon, for the microbial degradation in plant rhizosphere and soil, reaches and more preferably goes
Except effect.
Artificial swamp is a kind of ecological sewage disposal system of synthesis, have stable effluent quality, anti impulsion load it is big,
The easy to maintain, advantage such as capital construction operating cost is low, compared with other eutrophication water recovery techniques, artificial swamp has cost
Small, system in combination diversity height, there is specific aim, be easy to the advantages of operation management.So it can be used for handling low-pollution water.But
It is that, when handling the low-pollution water of low ratio of carbon to ammonium nitrogen and phosphorus pollution, still there is organic carbon source deficiency to cause Microbial denitrogenation to be imitated
The problems such as fruit is poor, filler is low to the adsorption capacity of phosphorus.
The problem of to overcome organic carbon source deficiency to cause Microbial denitrogenation effect difference, the side of additional carbon can be all taken mostly
Formula.However, some problems are equally existed using additional carbon, as carbon source controllability reduces, effluent quality tends to have residual carbon source, color
Spend higher etc..These measures also complicate wet land system, cost increase.
The problem of to overcome filler low to the adsorption capacity of phosphorus, novel wetland filler (zeolite, slag, pottery can be taken mostly
Grain, waterworks sludge etc.) inhaled instead of the mode of traditional wet land filler (soil, sand, gravel etc.), wherein water supply plant waste sludge phosphorus
Attached ability utilizes by force.But thering is research to point out, exclusive use water supply plant waste sludge is made filler and given birth in the presence of wetland plant is unfavorable for
The problem of long.
So being badly in need of one kind at present organic carbon source deficiency can be overcome to cause Microbial denitrogenation effect poor, suction of the filler to phosphorus
Attached capacity is low not to be hindered plant growth but and will not complicate wet land system, the increased method of cost.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of side for improving low-pollution water denitrogenation dephosphorizing rate
Method.
Technical scheme is summarized as follows：
A kind of method for improving low-pollution water denitrogenation dephosphorizing rate, comprises the following steps：Laid successively from bottom to top in pond：
Rubble or boulder bed, small gravel layer, fine sand layer, nutrient soil layer and vermiculite layers are formed artificially；In nutrient soil artificially
Wetland plant is planted in layer, pours low-pollution water, in the range of 15-30 DEG C, plant growth 7-14 days, pours low stain containing bacterium
Water forms combined artificial wetland, continues in the range of 15-30 DEG C, plant growth 7 days, makes low-pollution water denitrogenation dephosphorizing.
The thickness of the rubble or boulder bed is 25-35cm；The thickness of small gravel layer is 15-25cm；The thickness of fine sand layer
For 15-25cm；The thickness of nutrient soil layer is 20-30cm；The thickness of vermiculite layers is 4-6cm.
The particle diameter of the rubble or cobble is 20-50mm.
The particle diameter of the small gravel is 2-10mm.
The particle diameter of the fine sand is 0.25-0.5mm.
The particle diameter of the vermiculite is 1-2mm.
The low-pollution water containing bacterium be by volume ratio be 1:25-35 bacterium solution and low-pollution water composition, the bacterium solution it is dense
Spend for 1X108Individual/ml.
The bacterium is 2 by volume ratio：1 Shewanella putrefaciens and pseudomonas testosteroni composition.
Advantages of the present invention：
The method of the present invention can improve low-pollution water denitrogenation dephosphorizing rate.Containing elements such as nitrogen phosphorus in low-pollution water, just make
For the nutrient of plant in wetland, and by the absorption to nitrogen phosphorus so as to reaching few discharge of pollution, even zero-emission.
Embodiment
Nutrient soil is by waiting garden mould (being purchased from Tian Yuan gardening company), leaf mould and the vermiculite of mass ratio to mix.
Low-pollution water (simulation) (g/L)：Glucose 0.17g, soluble starch 0.16g, sodium acetate 0.233g, ammonium chloride
0.1025g, peptone 0.158g, beef extract 0.04g, ammonium sulfate 0.0284g, potassium dihydrogen phosphate 0.07g, sodium carbonate 0.06g.
Corn (day tower 5), the present invention will be described by taking corn (day tower 5) as an example by the present invention, but and to the present invention
Impose any restrictions, it is other to may be used to the present invention by growing plants in low-pollution water.
Shewanella putrefaciens (Shewanellaputrefacens), deposit number are CGMCC 1.3667.In 2012 9
The moon is purchased from China Committee for Culture Collection of Microorganisms's common micro-organisms center (abbreviation CGMCC, address:Chaoyang District, Beijing City
The institute 3 of North Star West Road 1, Institute of Microorganism, Academia Sinica, postcode 100101).
Pseudomonas testosteroni (Comamonastestosteroni), deposit number was CGMCC 1.3167, in 2012
It is purchased from China Committee for Culture Collection of Microorganisms's common micro-organisms center within 9th.
Under the present invention is further illustrated in conjunction with specific embodiments.
Embodiment 1
A kind of method for improving low-pollution water denitrogenation dephosphorizing rate, comprises the following steps：Laid successively from bottom to top in pond：
The Nutrition Soil that fine sand layer that small gravel layer that metalling that thickness is 30cm, thickness are 20cm, thickness are 20cm, thickness are 25cm
Earth layer and the vermiculite layers that thickness is 5cm are formed artificially；Wetland plant corn is planted in nutrient soil layer artificially, is poured
Low-pollution water, in the range of 15-30 DEG C, plant growth 7 days, pour low-pollution water containing bacterium and form combined artificial wetland, continue
In the range of 15-30 DEG C, plant growth 7 days, make low-pollution water denitrogenation dephosphorizing.
The particle diameter of rubble is 20-50mm.
The particle diameter of small gravel is 2-10mm.
The particle diameter of fine sand is 0.25-0.5mm.
The particle diameter of vermiculite is 1-2mm.
Low-pollution water containing bacterium be by volume ratio be 1:30 bacterium solution and low-pollution water composition, the concentration of the bacterium solution is 1X
108Individual/ml.
Bacterium is 1X 10 by concentration8Individual/ml Shewanella putrefaciens and concentration are 1X 108Individual/ml pseudomonas testosteronis press body
Product is than being 2：1 composition.
Blank group
In addition to pouring and forming combined artificial wetland without bacterium low-pollution water, the other the same as in Example 1.
10 water samples of the final plant growth artificial swamp of 7 days of blank group are taken, after testing：TN containing nitrogen concentration in water sample
(C) it is 32.177mg/L-32.591mg/L, clearance 39.47%-39.98%, TP containing phosphorus concentration (C) is in water sample
10.618-12.027mg/L, clearance is between 31.90%-38.71%.
Compareed with blank group, finally, 10 water samples of Example 1, after testing：The degradation efficiency of nitrogen phosphorus is obvious in sewage
Improve.TN containing nitrogen concentration (C) is between 24.561mg/L-25.389mg/L in water sample, and TP containing phosphorus concentration (C) is in 9.625mg/L-
9.312mg/L。
The treatment effeciency of nitrogen reaches 60.67%-63.36%, and the treatment effeciency of phosphorus reaches 45.73%-48.16%.
Embodiment 2
A kind of method for improving low-pollution water denitrogenation dephosphorizing rate, comprises the following steps：Laid successively from bottom to top in pond：
The Nutrition Soil that fine sand layer that small gravel layer that metalling that thickness is 25cm, thickness are 25cm, thickness are 15cm, thickness are 30cm
Earth layer and the vermiculite layers that thickness is 4cm are formed artificially；Wetland plant corn is planted in nutrient soil layer artificially, is poured
Low-pollution water, in the range of 15-30 DEG C, plant growth 10 days, pour low-pollution water containing bacterium and form combined artificial wetland, continue
In the range of 15-30 DEG C, plant growth 7 days, make low-pollution water denitrogenation dephosphorizing.
The particle diameter of rubble is 20-50mm.
The particle diameter of small gravel is 2-10mm.
The particle diameter of fine sand is 0.25-0.5mm.
The particle diameter of vermiculite is 1-2mm.
Low-pollution water containing bacterium be by volume ratio be 1:25 bacterium solution and low-pollution water composition, the concentration of the bacterium solution is 1X
108Individual/ml.
Bacterium is 1X 10 by concentration8Individual/ml Shewanella putrefaciens and concentration are 1X 108Individual/ml pseudomonas testosteronis press body
Product is than being 2：1 composition.
10 water samples of Example 2, after testing：The degradation efficiency of nitrogen phosphorus significantly improves in sewage.It is nitrogenous dense in water sample
TN (C) is spent between 23.071mg/L-24.396mg/L, and TP containing phosphorus concentration (C) is between 8.303mg/L-9.310mg/L, people
The treatment effeciency of nitrogen reaches 68.34%-72.25% in work wetland, and the treatment effeciency of phosphorus reaches 50.23%-53.45%.
Embodiment 3
A kind of method for improving low-pollution water denitrogenation dephosphorizing rate, comprises the following steps：Laid successively from bottom to top in pond：
The Nutrition Soil that fine sand layer that small gravel layer that boulder bed that thickness is 35cm, thickness are 15cm, thickness are 25cm, thickness are 20cm
Earth layer and the vermiculite layers that thickness is 6cm are formed artificially；Wetland plant corn is planted in nutrient soil layer artificially, is poured
Low-pollution water, in the range of 15-30 DEG C, plant growth 14 days, pour low-pollution water containing bacterium and form combined artificial wetland, continue
In the range of 15-30 DEG C, plant growth 7 days, make low-pollution water denitrogenation dephosphorizing.
The particle diameter of cobble is 20-50mm.
The particle diameter of small gravel is 2-10mm.
The particle diameter of fine sand is 0.25-0.5mm.
The particle diameter of vermiculite is 1-2mm.
Bacterium is 1X 10 by concentration8Individual/ml Shewanella putrefaciens and concentration are 1X 108Individual/ml pseudomonas testosteronis press body
Product is than being 2：1 composition.
10 water samples of Example 3, after testing：The degradation efficiency of nitrogen phosphorus significantly improves in sewage.It is nitrogenous dense in water sample
TN (C) is spent between 23.071mg/L-24.396mg/L, and TP containing phosphorus concentration (C) is between 8.303mg/L-9.310mg/L, people
The treatment effeciency of nitrogen reaches 68.43%-69.46% in work wetland, and the treatment effeciency of phosphorus reaches 51.57%-53.56%.
Claims (8)
- A kind of 1. method for improving low-pollution water denitrogenation dephosphorizing rate, it is characterized in that comprising the following steps：In pond from bottom to top according to Secondary laying：Rubble or boulder bed, small gravel layer, fine sand layer, nutrient soil layer and vermiculite layers are formed artificially；In battalion artificially Support and wetland plant is planted in soil horizon, pour low-pollution water, in the range of 15-30 DEG C, plant growth 7-14 days, pouring contains bacterium Low-pollution water forms combined artificial wetland, continues in the range of 15-30 DEG C, plant growth 7 days, removes low-pollution water denitrogenation Phosphorus.
- 2. according to the method for claim 1, it is characterized in that the thickness of the rubble or boulder bed is 25-35cm；Small gravel The thickness of layer is 15-25cm；The thickness of fine sand layer is 15-25cm；The thickness of nutrient soil layer is 20-30cm；The thickness of vermiculite layers Spend for 4-6cm.
- 3. method according to claim 1 or 2, it is characterized in that the particle diameter of the rubble or cobble is 20-50mm.
- 4. method according to claim 1 or 2, it is characterized in that the particle diameter of the small gravel is 2-10mm.
- 5. method according to claim 1 or 2, it is characterized in that the particle diameter of the fine sand is 0.25-0.5mm.
- 6. method according to claim 1 or 2, it is characterized in that the particle diameter of the vermiculite is 1-2mm.
- 7. according to the method for claim 1, it is characterized in that the low-pollution water containing bacterium be by volume ratio be 1:25-35 bacterium Liquid and low-pollution water composition, the concentration of the bacterium solution is 1X 108Individual/ml.
- 8. the method according to claim 1 or 7, it is characterized in that the bacterium is 2 by volume ratio：1 Shewanella putrefaciens and Pseudomonas testosteroni forms.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879401A (en) * | 2019-03-09 | 2019-06-14 | 兰州交通大学 | A kind of folded plate artificial wetland system for strengthening nitrogen phosphorus ligands |
| CN109943503A (en) * | 2019-03-08 | 2019-06-28 | 同济大学 | The method of S.oneidensis MR-1 raising anaerobic denitrifying efficiency |
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| CN101613155A (en) * | 2009-08-04 | 2009-12-30 | 四川农业大学 | The application of rhizome or all-grass of Steward Elatostema in handling livestock breeding wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109943503A (en) * | 2019-03-08 | 2019-06-28 | 同济大学 | The method of S.oneidensis MR-1 raising anaerobic denitrifying efficiency |
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